Power loss with wiring question

[speakerdude123 10+ year member]

Okay so here is my theoretical question: Say you have a mono block amp rated at 650 rms at 2 ohms, and you connect that amp to two 4ohm subs at 2 ohms. How much power is going into each sub? (Is it cut in half?) And lets say one sub is a 12" and the other is a 15" but they are in separate boxes.

Is this even possible?

Thanks for reading

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[keep_hope_alive Premium Member]

power is divided based on Ohm's law. if the subs have absolutely equal impedance (not just nominal impedance but the impedance curve) then power is split equally.

with two different sized subs - the impedance curves will differ - meaning sometimes one sub will get more power than the other - depending on frequency.

how much power is calculated by Ohm's law - given the voltage out of the amp.

 

[speakerdude123 10+ year member]

Amp puts out 650 rms at 2 ohms, speakers are both dual 4 ohm

 

[keep_hope_alive Premium Member]

so you can only wire two dual 4 ohm for a 4 ohm mono load or 1 ohm mono load

 

[speakerdude123 10+ year member]

What if the amp has an input for 2 (-) and 2 (+) terminals. Can I put on sub into one terminal and the other sub into the other terminal?

 

[SpeedEuphoria 10+ year member]

no its a mono amp the 2 + and 2- are connected internally, so you can only wire 2 4ohm dvc subs to 1ohm or 4ohm

also its not a good idea to use 2 different sized subs. Sure it may work and sound ok, just not the way to go with things being as cheap as they are

 

[helotaxi 5,000+ posts]

It won't sound OK either.