To the "underpowered but still doing work" part...I thought this was common knowledge?
I gave a 15" boss onyx nx159DC 250w rms (125w rms per coil on a 2 channel p500-2) and it SLAMMED in a 4.0 ported box. I mean it was crazy loud (for what I was used to) and even shook my rear view mirror off.
I can only assume that the decibel output between under powering and exact powering is very minimal.
BTW sorry to go off topic but I don't feel this needs a thread...
Bc2000d - jvf FI BL 15" - s800/4
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