Originally Posted by SINTORMAN

aren't the L/R inputs internally summed for double the voltage? Or is that not how it works?

Originally Posted by SINTORMAN

I am more concerned with the fact of his amps getting a clean signal not enough signal.

His deck only having 1 preout isn't really a good sign without knowing the brand.

Decks clip too and with a line driver that greatly reduces the chance of that while giving the amp plenty of input signal.

IMO if it is a cheap deck I would use a line driver.

OP.. what deck is it?

Originally Posted by Fallen

A lot of mono amps have 2 RCA inputs, but you don't need to use both.

I've never seen the point of running a pair of RCAs back to a mono amp...

1 RCA for me all the way. IMO line drivers are overkill. As far as a clean signal goes, keep in that each thing you put in the signal path adds noise. If the H/U can adequately drive the amp, then I don't see the need for a line driver.

Yes the higher voltage will help reject the noise the RCA will pick up between the line driver and amp. But any noise before the line driver is going to be amplified as well. Depending on how things are setup, it might end up with more noise this way. Not to mention it makes it much easier to clip the amplifier.

Y cables or just using one input on the amp are the way to go IMHO.

Originally Posted by profundus-sanus

its just an unecissary point for failure. if he was running multiple amps then maybe.

the input impedance is so high however you have to split quite a few times to see a drop in voltage.

i split 10v 6 times and each amp was seeing 9.2v or something like that. i would have been just fine without a line driver, only reason i left it in was to keep the h/u from being damaged just in case lowering the impedance that much might have drawn too much current.

however i don't ever recomend putting more than 4v into an amp. 5+ can potentially fry some amps.

Originally Posted by SINTORMAN

never hurts

Originally Posted by profundus-sanus

rca y splitter. you wont need a line driver.

Originally Posted by Lac.wit.bass

Use an RCA spliter.

Originally Posted by morbid1488

my new deck only has one female rca for the sub out... how do i hook my amp up? deck is a soundstream vr450. amp is a mono amp but has left and right rca inputs . any help would be appreciated. thank you