Dual or Single Voice Coil? (1 Viewer)

[Jin E]

All other thing being equal... is there any advantages to the following setups?
Dual 8ohm voice coils.. each driven seperatly with a 85WPC stereo Amp for a total of 170 Watts.
Single 8ohm voice coil with 125Watts.
You can probably guess I'm looking for a new driver to make a sub... and these are my two choices for amplification.
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-Jin
My Theater

 

[DanWiggins]

Jin,
All else being equal, the DVC approach which allows higher power delivery is better. Gives you typically more headroom (within reason; if the driver or driver/cabinet combo can't handle more than 125W to start with, then the extra power delivery of the DVC approach doesn't help at all).
Dan Wiggins
Adire Audio
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[Allan Jayne]

Another use for a dual voice coil subwoofer is that any amp can have both left and right channels connected to the sub (one amp channel output to each voice coil) without risk of shorting. Whereas only amps specially designed for the purpose can have both left and right channels connected to a single voice coil speaker, sometimes a special set of "subwoofer" terminals on the amp is used.
Video hints: http://members.aol.com/ajaynejr/video.htm