Is there anyone who runs two 12w7's off one JL 1000/1? I know the amps are underrated somewhat and was wondering how one amp would push the two subs? DO you think one 12w7 at full power on the 1000/1 would sound better than two at half power each. The reason i am asking is because i know JL recommends the use of either a 500/1 or a 1000/1 to power a 12w7 so i was wondering if it can be done.

I need to know how to build my box so any input is appreciated...I have the room to run either one ported or two sealed...

 

FWIW... I went from a single 10" with 600 watts to dual 10's with 300 watts each. The dual subwoofer setup sounds MUCH better.

 

Well... first off, this is going to be a long reply, so get comfy..

The "max" power of the subwoofer that the MFG specs is just a guideline. There are actually 2 different "max" power levels for a sub. One the mfg has control over which is the thermal rating; basically where you melt the varnish off the voice-coil. The other "max" power is determined by the box.

If you run 2 sealed enclosures the sub will need more power to reach it's Xmax (Where it is at peak travel; travel any further and you will damage the sub) than a vented enclosure.

So... to answer your question, pick which enclosure style you want, then figure the amps out. If you're going to run the smaller sealed enclosures then I'd sugest the 1000.1's; one on each sub. If you are going with a ported enclosure, then the subs can not handle as much power and a single 1000.1 should handle it depending on the ohm of the subs and capability of the amp.

But on another side not relating to your other thread...

This is a serious piece of equipment; the W7, and can/will destroy improperly built enclosures. Hell, my enclosure for my Brahmas (Comparable sub, actually better IMO) is 2 layers of 3/4" MDF to get the strength up and deflection down for the sub. These are some of the most powerful subs on the market today, and they NEED a properly built enclosure to perform properly.

 

Yes, it's dependant on the enclosure you end up with. What 97Formula-WS6 failed to mention, is that if you increase the volume of a sealed box, you can still reach full excursion with less power. The 12w7's are quite underrated, and can happily take 1kw+ RMS daily in the right enclosure. Recommended RMS power for them is 750, now that's not a 'peak' or thermal number, that's a suggested safe power level.

From personal experience, I would run two 1000/1's. They are a fairly expensive amp for the amount of power you get, though they do put out a lot of juice. While I love the JL amps for how clean and flexible they are, there are alternatives that don't cost nearly as much money that would work quite well. If money is no object, get two 1000/1's and if money is really no object, get them in chrome They look deadly in that finish.

 

yes, that is a true point as well, that I forgot to mention...

 

So would you guys suggest it or not?

 

read the replies... the suggestions are in there...