Quote:



Can anyone see problems with this proposition?



Yes.

You said, "This is an 8 inch unit 4 ohm unit with a claimed capacity of 180W RMS and 360W peak. It utilises dual 4 ohm voice coils ..."

And then you said you intend to run the subwoofer power amp bridged into 4 ohms.

But you have two 4 ohm voicecoils.

In parallel, they would be 2 ohms.

Besides that, whatever you use for a crossover in front of that amp will likely be in stereo.

I suggest you use the two 4 ohm voice coils hooked to the amp in stereo and don't be so concerned about the apparent higher wattage gain involved with running a strapped mono amp.

Quote:

Is this insufficient power for the speaker?



The best way to know that would be to try an experimental hookup and see. The efficiency of the subwoofer itself is going to be more important than counting watts here.

Quote:

How does this wiring plan look to you?



Like it would blow up the amplifier very quickly if you bridged it and then hooked up both voice coils, see the above again.

*Do you have an active crossover?

*You don't have to punch a hole for bass waves if you keep the amplitude and thus the air motion down below the point where the spotwelds are being broken as in one of those "boom cars".

*You can add some low end to that older amplifier by utilizing large capacitor (1-Farad or so is now available for just this purpose) on its power supply right where the power goes into the amp. This will provide a current "tank" and will effectively lower the bass response plus elminate power depletion on the bass waves. You can find these type of capacitors where auto sound is sold. You likely only need one good cap here.



--Mac

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