(2) JL12W7's - how many watts required?

[TeoTorriatte 10+ year member]

Anyway, As far as SQ, I believe subwoofers do NOT actually have their best SQ at minimum rms recommendations, rather they find them at more like 3/4 or so of their maximum rms recommendation. Not sure about that though. All I know is I had an MTX9500 15 and at 500 rms it sounded like poop, and thats the min. More power (not quite a thousand) and their was an SQ gain as well as db.

You may have thought you heard an SQ improvement by adding more power, but what likely happened was your brain equated 'louder' with sounding 'better' -- which is very common.
In reality, the LESS power you run to any speaker (tweeter, midrange, midbass, woofer, subwoofer, etc), the more accurate (read: better SQ) they will be -- provided the speaker/amplifier combo is capable of producing realistic listening levels. As you add power, excursion increases and voice coil temps increase. This causes increased distortion, t/s parameter shift, power compression, BL compression, KMS compression, etc. In the case of the W7's, running a pair at 500W apiece will provide for improved SQ and increased output (vs. running a single W7 at 1000W).

 

[mcsoul 10+ year member]

I'd go sealed with an AQ2200d, With 1.5 ohm daily probably around 1800w.

A lot cheaper than a 1000/1 too.