Stupid question: what would happen if/is this possible?

[pwnt by pat 10+ year member]

You take one channel of audio source, and split it out to two amps. Each amp is then bridged and run to a sub. The sub, however, is SVC 4 ohms. The + from each amp goes to the + on the sub, and the - from each amp goes to the - on the sub.

Is it possible to run like this safely and if so, would each amp see a 4 ohm load?

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[TypeR0149 10+ year member]

so amps are not strapable huh

 

[SAG3 5,000+ posts]

dont even try it

 

[pwnt by pat 10+ year member]

amps are not strappable

Sag, why not? Care to back it up?

 

[Fast1one 10+ year member]

You would need tools to make sure the gains, crossover points, etc are set PERFECT, i think its doable...

 

[pwnt by pat 10+ year member]

crossovers would be bypassed and controlled via the source

Gain would be set thanks to a dmm.

 

[Fast1one 10+ year member]

I guess you can try it, but just be careful...Just as long as each amp is 2 ohm stable bridged....as each amp will effectively see only 2 ohms when connected to a four ohm load strapped....the amps are identical right?

 

[pwnt by pat 10+ year member]

identical amps, stable 2 ohms bridged

Why will they see 2 ohm load each, it's not strapping...?

 

[KaeZoo 10+ year member]

Don't think of it as two amps each supplying voltage to a speaker terminal. Think of it as each amp supplying voltage to a speaker terminal AND ANOTHER AMP. Might as well take the speaker out of the system and let the two amps just slug it out with each other; that's one less piece of equipment to let the magic smoke out of.

 

[pwnt by pat 10+ year member]

What about dropping some diodes in place or fabbing an isolation circuit?

 

[KaeZoo 10+ year member]

An amp output is AC current. If you put a diode on it, you get DC and heat, which isn't good for a subwoofer or a diode.

The only possible setup that comes close to what you're thinking of is a DVC sub, with an amp connected to each voice coil. Even that is usually more trouble than it's worth.

 

[aphinney 10+ year member]

Hmmm

 

[pwnt by pat 10+ year member]

hmm. Okay. I knew that was the case, but had a brain fart and couldn't figure out why it wouldn't work.