WIring help por favor - Page 2 - Realm of Excursion



Accessories & Electrical Alternators, Batteries, Tools & Sound Deadening

Reply
Old 07-20-2012   #26 (permalink)
Angry old man
 
sri3850341's Avatar
 
Join Date: Oct 2007
Location: Las Vegas,1971-present,someday i'll retire in Idaho
Age: 50
Posts: 5,324
Rep Power: 451
sri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

lol, it blocked it, ****tail straw
__________________
2012 Scion xB
Pioneer DEH-80PRS (active)
ZUKI Audio, Eleets, front stage amp
Rockford Fosgate PPS4-6 mids
Image Dynamics XS-28 tweets
Hifonics GLX1000.1
2 Sundown E10's with a Pete designed enclosure...




To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sri3850341 is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 07-20-2012   #27 (permalink)
Angry old man
 
sri3850341's Avatar
 
Join Date: Oct 2007
Location: Las Vegas,1971-present,someday i'll retire in Idaho
Age: 50
Posts: 5,324
Rep Power: 451
sri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossiblesri3850341 has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

Quote:
Originally Posted by sri3850341 View Post
lol, it blocked it, c o c k t a i l straw
c o c k t a i l
__________________
2012 Scion xB
Pioneer DEH-80PRS (active)
ZUKI Audio, Eleets, front stage amp
Rockford Fosgate PPS4-6 mids
Image Dynamics XS-28 tweets
Hifonics GLX1000.1
2 Sundown E10's with a Pete designed enclosure...




To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sri3850341 is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #28 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

I don't get it.
So adding this H/O alt isn't going to make one ounce of difference in my voltage at the amp because I'm using 4 gauge from the battery?
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
 
Old 07-20-2012   #29 (permalink)
170 dB
 
profundus-sanus's Avatar
 
Join Date: Jan 2007
Location: wilmington, nc
Age: 35
Posts: 7,447
Rep Power: 567
profundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

Quote:
Originally Posted by SolemnSinner View Post
No, it drops into the 12's at 1200 rms @ 1ohm with the stocker alt.

Still though, wouldn't the 250 amp alt keep me around 13.5 even when jamming it?
the alt regulator will adjust voltage based on what it sees on its output terminals, not what the amp is seeing. it'll compensate for that 125a draw and still put out 14.4 at its terminals... but it wont compensate for Wire losses.

running 125 amps through 4 gauge thats 17ft loong will net you around 1.3v drop by the end of the wire assuming its ofc 4 gauge, or 1.8v drop on cca.

so if your alt is putting 14.4 out you'll see 13.1v at the end of the wire under full load conditions with ofc or 12.6v under full load with cca.

now on low volume you'll see pretty much exactly what you'll have under the hood.
__________________


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

profundus-sanus is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #30 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Quote:
Originally Posted by profundus-sanus View Post
the alt regulator will adjust voltage based on what it sees on its output terminals, not what the amp is seeing. it'll compensate for that 125a draw and still put out 14.4 at its terminals... but it wont compensate for Wire losses.

running 125 amps through 4 gauge thats 17ft loong will net you around 1.3v drop by the end of the wire assuming its ofc 4 gauge, or 1.8v drop on cca.

so if your alt is putting 14.4 out you'll see 13.1v at the end of the wire under full load conditions with ofc or 12.6v under full load with cca.

now on low volume you'll see pretty much exactly what you'll have under the hood.
Ok. I understand fully now. Time to get some 1/0 and a reducer.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #31 (permalink)
170 dB
 
profundus-sanus's Avatar
 
Join Date: Jan 2007
Location: wilmington, nc
Age: 35
Posts: 7,447
Rep Power: 567
profundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

Quote:
Originally Posted by sri3850341 View Post
like drinking mcdonalds shake through ****tail straw
yup.

its like you add a bigger alt all you did is add more shake... and your goal is getting a brain freeze.

but if you got a little ass straw you can't drink it fast enough to get a brain freeze(straw=wire)

but say you add a huge straw(4/0) but have a little cup(110a alt) then you can drink as fast as your little(or big respectively) heart desires.. but you only have enough shake to get a sorta brain freeze cause you got a big ole head(1kw)

okay that got a little out of hand.. lol
__________________


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

profundus-sanus is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #32 (permalink)
170 dB
 
Fallen's Avatar
 
Join Date: Apr 2006
Location: Ontario, Canada
Age: 34
Posts: 8,692
Rep Power: 625
Fallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

The Wire isn't just a wire. It's a resistor.

4awg has a resistance of 0.2485milliohms/ft.
17 feet gives
0.0042245R

V=IR.
Amp drawing 120A (typically amps draw about .1A per watt)
V=.0042*120=0.5V
So you will lose .5V across the wire.
Since you have a beefy alt, we'll ignore it's internal resistance. However it too has resistance, like the wire, and voltage will be dropped there too.


So if it's sitting at 14V at the alt, then with 120A you'll read 13.5V at the amp.
That's the very best case scenario too. Each connection introduces more resistance.


There's also resistance introduced by the ground, but that becomes some funky analysis, since how do you measure the chassis resistance.
Realistically it's going to cost you a volt too at 120A.


Which brings us right in line with what prof said. So now considering the alt will probably sag down to 14V, 1V lost on the chassis, and .5 on the wire and another .5 on connectors, full throttle there's probably only 12V at the amp with this wire.
Maybe if the internal resistance of the alt is really low, or it's heavily regulated etc, it'll stay at 14.4V, you still end up with 12.4 V across the amp terminals.


One way to force 14.4 across the amp terminals would be to set the alt voltage higher, but that's kinda silly (IE have it's feedback for the regulator taken at the amplifier not at the battery up front)



__________________
Car: 2009 Audi A4 Avant Quattro
Sub amp: Hifonics ZXX-3200.1D
Subwoofers: 4 SA8V.2 @ 2 Ohms
Enclosure: 2 cu ft ported, tuned to 33Hz
Fallen is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #33 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Got another question.

Why would AQ produce an amplifier with 4 gauge power and grounds, if it's impossible to get 14.4 @ the amp unless you mount the amp under the hood next to the battery?

Their ratings for the amp are all @ 14.4.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #34 (permalink)
170 dB
 
Fallen's Avatar
 
Join Date: Apr 2006
Location: Ontario, Canada
Age: 34
Posts: 8,692
Rep Power: 625
Fallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

If you use 1/0 power and ground wires each @ 17 feet:

Resistance of 1/0 is 0.09827milliOhms/ft.

So that's 17*0.09827/1000 ohms or 0.00167R

V=IR
Assuming 120A(They're amps could be more efficient. Maybe they only need 100A @14.4V to do rated.)
V=120*0.00167=0.2V For both wires.
So .4V is lost total. If the alt is not dropping any voltage, and your connections are really great. Maybe you'll get 14V across the amp.
I hope this helps.

:P Or yeah just install it in the engine bay. Or don't use wires. Or use a lab bench top power supply and rate your amps with resistive loads.


WOW I DERPED HARD READING YOUR POST.

They did that, for the marketing dpt. Nobody rates amps at 12V these days, since you get much less power. Too bad, as you're discovering, it isn't feasible to get 14.4V to the amp without running a higher voltage alt, or magical 0 resistance wires.



__________________
Car: 2009 Audi A4 Avant Quattro
Sub amp: Hifonics ZXX-3200.1D
Subwoofers: 4 SA8V.2 @ 2 Ohms
Enclosure: 2 cu ft ported, tuned to 33Hz
Fallen is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #35 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

I was getting 14.6 with the AQ2200 in the CRX and a 165 amp alternator.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #36 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

And then with the Hifonics Colossus and 4 SA-10's wired @ 2ohms, it never dropped below 14 volts, full tilt. Again in the CRX.

F_CK Fords.

Honda's are better.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #37 (permalink)
170 dB
 
Fallen's Avatar
 
Join Date: Apr 2006
Location: Ontario, Canada
Age: 34
Posts: 8,692
Rep Power: 625
Fallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

Quote:
Originally Posted by SolemnSinner View Post
I was getting 14.6 with the AQ2200 in the CRX and a 165 amp alternator.
Did you actually measure the current draw and the power out from the amp?
Ohms law doesn't lie

When I'm not drawing much current (say daily driving) my voltages sit nice and high. IT's when you're drawing hundreds of amps when things really take a nose dive.

The difference in current draw between 3dB is half, But to the ear it's not a big difference. It may seem quite loud when drawing only say 30-40A. (especially since there's less of a drop, and the voltage at the amp would be higher, increasing it's output a bit)



__________________
Car: 2009 Audi A4 Avant Quattro
Sub amp: Hifonics ZXX-3200.1D
Subwoofers: 4 SA8V.2 @ 2 Ohms
Enclosure: 2 cu ft ported, tuned to 33Hz
Fallen is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #38 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Oh yeah, forgot, I had 2 giant batteries in the CRX. lol

I think I should get some sleep. haha
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #39 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Quote:
Originally Posted by Fallen View Post
Did you actually measure the current draw and the power out from the amp?
Ohms law doesn't lie

When I'm not drawing much current (say daily driving) my voltages sit nice and high. IT's when you're drawing hundreds of amps when things really take a nose dive.

The difference in current draw between 3dB is half, But to the ear it's not a big difference. It may seem quite loud when drawing only say 30-40A. (especially since there's less of a drop, and the voltage at the amp would be higher, increasing it's output a bit)
Had a stinger voltmeter wired right at the power and ground of the amp and mounted on the dash. Yes sir!
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #40 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Shall we file this thread alongside the "idiotic review" thread I made a long time ago?
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #41 (permalink)
170 dB
 
Fallen's Avatar
 
Join Date: Apr 2006
Location: Ontario, Canada
Age: 34
Posts: 8,692
Rep Power: 625
Fallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

Voltmeter doesn't measure current draw or power

Ok anyways point is, you'll drop some voltage across the wire. (regardless of Honda or Ford). My numbers could be off, since car audio wire isn't really standardized. Sometimes it's oversized, undersized who knows. Also the assumption about the drop at the alt could be exagerated in your case. Who knows.

I do know one thing. If there's any current flowing through a wire, there will be a voltage dropped across it. It isn't ohms theory, or ohms suggestion, it's a law.

That said I also omitted the role of batteries. They make analysis even more fun. They're even less ideal voltage sources than alternators.



__________________
Car: 2009 Audi A4 Avant Quattro
Sub amp: Hifonics ZXX-3200.1D
Subwoofers: 4 SA8V.2 @ 2 Ohms
Enclosure: 2 cu ft ported, tuned to 33Hz
Fallen is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #42 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Quote:
Originally Posted by Fallen View Post
Voltmeter doesn't measure current draw or power

Ok anyways point is, you'll drop some voltage across the wire. (regardless of Honda or Ford). My numbers could be off, since car audio wire isn't really standardized. Sometimes it's oversized, undersized who knows. Also the assumption about the drop at the alt could be exagerated in your case. Who knows.

I do know one thing. If there's any current flowing through a wire, there will be a voltage dropped across it. It isn't ohms theory, or ohms suggestion, it's a law.

That said I also omitted the role of batteries. They make analysis even more fun. They're even less ideal voltage sources than alternators.
So you're saying that when the voltmeter is connected to the amp at the power and ground, it's lying about voltage drops?
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #43 (permalink)
170 dB
 
Fallen's Avatar
 
Join Date: Apr 2006
Location: Ontario, Canada
Age: 34
Posts: 8,692
Rep Power: 625
Fallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

Probably. I would check with a dmm to be sure. The accuracy on some of those voltmeters is questionable at best.

The thing is, if we're talking music, and not pure tones, then the current draw will not be constant. That'll give things a chance to charge. Who knows what the refresh rate is on those voltmeters.

But yeah, instead of getting too technical, just upgrade the damn wire. Leave the 4awg for ground . (and use the chassis in parallel with it)
That would minimize effort.



__________________
Car: 2009 Audi A4 Avant Quattro
Sub amp: Hifonics ZXX-3200.1D
Subwoofers: 4 SA8V.2 @ 2 Ohms
Enclosure: 2 cu ft ported, tuned to 33Hz
Fallen is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #44 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Ok fellas. Thanks for the informative posts. I really appreciate it. I gotta hit the sack(no, not weed). I'm tired.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #45 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Quote:
Originally Posted by Fallen View Post
Probably. I would check with a dmm to be sure. The accuracy on some of those voltmeters is questionable at best.

The thing is, if we're talking music, and not pure tones, then the current draw will not be constant. That'll give things a chance to charge. Who knows what the refresh rate is on those voltmeters.

But yeah, instead of getting too technical, just upgrade the damn wire. Leave the 4awg for ground . (and use the chassis in parallel with it)
That would minimize effort.
You have to calibrate the stinger voltmeters by using a DMM first.

Thanks for your help. I do appreciate it.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #46 (permalink)
170 dB
 
profundus-sanus's Avatar
 
Join Date: Jan 2007
Location: wilmington, nc
Age: 35
Posts: 7,447
Rep Power: 567
profundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossibleprofundus-sanus has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

Voltage Drop Calculator

this is what i use.

its 1/2 loop resistance input but calculates full loop.. as you'll have voltage drop on ground and positive.. Thats why my numbers where much higher than fallens... As mine were assuming the chassis had similar resistance to the 4 gauge.
__________________


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

profundus-sanus is offline   Reply With Quote Quick reply to this message
Old 07-20-2012   #47 (permalink)
170 dB
 
Fallen's Avatar
 
Join Date: Apr 2006
Location: Ontario, Canada
Age: 34
Posts: 8,692
Rep Power: 625
Fallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

Quote:
Originally Posted by profundus-sanus View Post
Voltage Drop Calculator

this is what i use.

its 1/2 loop resistance input but calculates full loop.. as you'll have voltage drop on ground and positive.. Thats why my numbers where much higher than fallens... As mine were assuming the chassis had similar resistance to the 4 gauge.
If I'm not mistaken, why it's different than mine, is it takes temperature into consideration. Hence the "normal/adverse/extreme" etc. 120A will heat 4awg, increasing its resistance, causing an even higher voltage drop. So I think that's where the discrepancy would come in.

I should figure out how to calculate that. But you would need to know if the wire is open to the atmosphere, or under carpet, in conduit etc. Ugh to much math.

(since I was assuming a drop in the ground too)



__________________
Car: 2009 Audi A4 Avant Quattro
Sub amp: Hifonics ZXX-3200.1D
Subwoofers: 4 SA8V.2 @ 2 Ohms
Enclosure: 2 cu ft ported, tuned to 33Hz
Fallen is offline   Reply With Quote Quick reply to this message
Old 07-21-2012   #48 (permalink)
140 dB
 
SolemnSinner's Avatar
 
Join Date: May 2010
Location: Las Vegas
Age: 50
Posts: 815
Rep Power: 195
SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!SolemnSinner has the second highest rating possible - An extreme assest to the forum!
Default Re: WIring help por favor

Would 2 awg wire be too small? Could I use it instead of 1/0
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
SolemnSinner is offline   Reply With Quote Quick reply to this message
Old 07-23-2012   #49 (permalink)
170 dB
 
Fallen's Avatar
 
Join Date: Apr 2006
Location: Ontario, Canada
Age: 34
Posts: 8,692
Rep Power: 625
Fallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossibleFallen has the highest rating we can give - To make it this far is  nearly impossible
Default Re: WIring help por favor

It comes down to tradeoffs. For 1200Wrms, It should be OK. But you'll obviously have more drop than if you used 1/0.

Now here's an interesting conundrum, what's better 1/0 front to rear with no battery in the back or 2awg front to rear and a battery in the back 12" from the amp.

The battery will essentially average the current draw. Once you deplete it's charge it'll actually hurt your voltage (since now it's a load, and so is the amp).

But for music, where you're not drawing a continuous 120A, having a moderate sized SLA and 2awg might work better than just 1/0.

Obviously battery+1/0 trumps that.

Battery makes installation easier, but it's going to add weight. That said weight on the back of a mustang isn't a bad thing



__________________
Car: 2009 Audi A4 Avant Quattro
Sub amp: Hifonics ZXX-3200.1D
Subwoofers: 4 SA8V.2 @ 2 Ohms
Enclosure: 2 cu ft ported, tuned to 33Hz
Fallen is offline   Reply With Quote Quick reply to this message

Reply

  Realm of Excursion » Car Audio Discussion » Accessories & Electrical

Bookmarks

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Realm of Excursion forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
I need wiring help!!!! exmortiss Subwoofers 5 10-13-2009 03:54 PM
Jeep Quote Por Favor Thumpr Accessories & Electrical 2 06-10-2008 07:54 AM
Wiring??? audiobahnfreak General Car Audio & SPL Discussion 2 04-10-2008 10:52 AM
Help with wiring Talyen08 Amplifiers 2 09-30-2006 06:19 PM
Wiring chawk Accessories & Electrical 51 07-03-2006 09:53 AM

» Amps
A/d/s/
Advent
Alphasonik
Alpine
American Bass
ARC Audio
Atomic
Audio Art
Audio Gods
Audiobahn
Audiocontrol
Audiopipe
Audison
Aura
Autotek
Avionixx
Bazooka
Beyma
Blaupunkt
Boss
Boston Acoustics
Bravox
Cadence
Cascade (CAE)
CDT Audio
Cerwin Vega
Clarion
Clif Designs
Concept
Coustic
Critical Mass
Crossfire
Crunch
DB Drive
DC Audio
DC Power
DEI
Denon
Diabolo
Diamond
Digital Designs
Directed
DLS
Dual
DYnamat
Dynaudio
Earthquake
Eclipse
Elemental Designs
ESX
Eton
Farenheit
Fi Car Audio
Focal
Fusion
Genesis
Ground Zero
Hafler
Helix
Hertz
Hifonics
Hushmat
Image Dynamics
Infinity
Interfire
JBL
Jensen
JL Audio
JVC
Kenwood
Kicker
Knu Konceptz
Kole Audio
Kove Audio
Lanzar
Lightning Audio
Linear Power
MA Audio
Magnat
Marantz
Massive Audio
MB Quart
McIntosh
Memphis
Metra
MMATS
Mobile Authority
Morel
MTX
Nakamichi
Niche Audio
O2 Audio
Ohio Generator
Optima
Orion
Oxygen Audio
OZ Audio
PG Audio
Phase Linear
Phoenix Gold
Pioneer
Polk
Power Acoustik
Powerbass
Powermaster
Precision Power
Profile
Pyle
Pyramid
RadioShack
Rainbow
Rampage
RE AUdio
Rockford Fosgate
Scanspeak
Scosche
Seas
Sony
soundstream
Sparkomatic
SPL Dynamics
Stinger
Sundown Audio
Swiss Audio
Targa
TC Sounds
TREO Engineering
TRU
Tsunami
Ultimate
US Acoustics
US Amps
Velodyne
Vifa
Viper
Visonik
Xtant
Zapco
Zed Audio
Powered by vBadvanced CMPS v3.2.3

Links
Buy car audio
buy & sell car audio stereo equipment. Purchase used amps, subs speakers for sale and buy classified listings for 12 volt amplifier and subwoofer sales forum
Car Audio Forum
Buy car audio, Sell mobile audio, Wholesale 12 volt, automotive community forum, sub sub woofer, speakers, amplifier, amps, car audio forum
DIYMA
diymobileaudio.com is the DIY car audio install forum for automotive quality and spl stereo bass. 12 volt audio installation wholesalers buy amps, subs, double din car audio head unit electronics and ipod blue tooth car alarms at discounted prices
Sound Deadener
Sound deadening, vibration damper, cld tile, damping mat. Anti vibration pads for automotive insualtion damping, CDL mat, sound damping, noise killer, vibration damper sound deadener


All times are GMT -7. The time now is 02:53 PM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.6.0 ©2011, Crawlability, Inc.
ABMM Powered by Syrian Medical Society
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.