wiring a 2 ch amp to 4 ohm dvc

Hello-

I see that this topic has been covered before, but I just want to make sure I grasp the idea before ruining something.

I have a 2-Channel Amp:
4 Ohm: 100Wx2
2 Ohm: 200WX2
4 Ohm Bridged: 400Wx1

and a Sub:
450W RMS
4 Ohm DVC

Since I cannot use the mono output of the amp (only able to achieve a 2 or 8 Ohm load due to the DVC config, right?), would it be possible to run both channels to the Sub in parallel without a problem? That is, connecting both amp channel's positive leads to voice coil #1 positive and both negative leads to voice coil #2 negative. Does this effectively throw 400W at the speaker? If this is not advisable, am I stuck with 8-Ohm with my current setup?

Thanks for the help!
-Tim

No, that will damage your amp.  Either use 8-ohms bridged or connect each VC to its own output channel (which is the same net effect, operating at the stereo 4-ohm rating.)

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Thanks man.

I appreciate the feedback. So, by damaging my amp, do you mean that my suggested wiring would have effectively made the amp see a 2-Ohm load, similar to wiring the mono output in parallel? Or am I off the mark.

By wiring it as you suggested, does that mean that I bridge the channels, which would mean 400W at 4-Ohms, but then wire it in series to reach 8-Ohms and 200W to the speaker?

-Tim

graupel wrote:

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I appreciate the feedback. So, by damaging my amp, do you mean that my suggested wiring would have effectively made the amp see a 2-Ohm load, similar to wiring the mono output in parallel? Or am I off the mark.

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No, wiring it as you suggested would short out the amplifier channels and blow the fuses (at best) or fry the amp (at worst.)

graupel wrote:

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By wiring it as you suggested, does that mean that I bridge the channels, which would mean 400W at 4-Ohms, but then wire it in series to reach 8-Ohms and 200W to the speaker?

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Correct.

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