Amp impedance

[mporettim]

I'm not sure if I should run my amp at 1.6 ohms or .4 ohms. Each coil has a resistance of 1.6 ohms. Right now I have my amp at 1.6 ohms and at tuning I was measuring ~1.7 ohms. Is it worth the extra strain on the amp for the extra power.

This is a daily system btw

Subs: Fi BL 15" Fully Loaded (supposedly, they were also supposed to be dual 1 but it seems more like they're dual 2)
Box: 8ft^3 after all displacements @ 33hz
Amp: AQ 2200D
Electrical: 200A alt, 165Ah of battery

[johnecon2001]

You're measuring DCR instead of impedance. Since ohm load is variable with frequency, heat and voltage, the average of that coil is what they give you. If you ordered a DVC 1 woofer, then you have a DVC1 woofer. Not a DVC2.

Since that amp is stable to 1 ohm. You don't have much of a choice but to wire it to 2 ohms like this:


Anything lower, and you risk voiding the warranty on the amplifier.

[mporettim]

I have two subs btw, forgot to mention that.

The reason I said are supposedly dual 1 is because the guy I bought them from used said they were dual 1, I'm thinking he may have been wrong.

Alright, I'll keep it at wired where I had it, 1.6 ohms DCR with the lowest impedance (I measured) at 1.7 ohms. I didn't think about the warranty, I'd rather keep that available to me.


That said, could I try it at the lower impedance for an hour safely? Just curious would the extra power could bring me.

[johnecon2001]

Originally Posted by mporettim

I have two subs btw, forgot to mention that.

The reason I said are supposedly dual 1 is because the guy I bought them from used said they were dual 1, I'm thinking he may have been wrong.

Alright, I'll keep it at wired where I had it, 1.6 ohms DCR with the lowest impedance (I measured) at 1.7 ohms. I didn't think about the warranty, I'd rather keep that available to me.


That said, could I try it at the lower impedance for an hour safely? Just curious would the extra power could bring me.

If all the coils are reading 1.7 ohms, they're probably Dual 2 ohm subs (I retract my previous one ohm sub idea). Either way, you still don't have an ideal ohm load for that amp.

Whether it be 1 hour or 15 minutes, if your voltage drops low enough you can very easily cook that amp and possibly the subs. Not worth it, imo.

[mporettim]

Alright then, I'll just play it safe and leave it as it is, Thanks for your input johnecon