Question...

[chris96camaro 10+ year member]

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...

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[iceteebone 5,000+ posts]

imo i would run 1 ported.

 

[2kchevy06civic 5,000+ posts]

if you want the output, go with one ported. You wouldn't need the entire 1000 watts if you had a nice box though either, I'm sure the 500/1 would be just fine if it was ported.

 

[John3000 10+ year member]

Ive heard 2 12w7 in a ported box getting 500 watts each and I must say that they still hit **** hard considering that they were being underpowered. BTW they were being pushed by an Xtant amp, so the 1000/1 would be fine if you want to push two 12w7's. Jl's dont need a heap of juice to perform well.

 

[iceteebone 5,000+ posts]

Ive heard 2 12w7 in a ported box getting 500 watts each and I must say that they still hit **** hard considering that they were being underpowered. BTW they were being pushed by an Xtant amp, so the 1000/1 would be fine if you want to push two 12w7's. Jl's dont need a heap of juice to perform well.

keyword ported. if he runs 2 subs they would have to be sealed.

 

[John3000 10+ year member]

Sorry didnt read that last sentence. I would get the one ported b/c I have heard that the W7 sounds like poo in a sealed box....thats just what I have been told, havent heard a sealed W7.

 

[Matt-AO 10+ year member]

I had a 10w7 in a sealed box and i barfed on it after hearing it.... then sold it for my DD's

 

[John3000 10+ year member]

I had a 10w7 in a sealed box and i barfed on it after hearing it.... then sold it for my DD's

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[psych0ticnemes1 5,000+ posts]

one ported... two sealed wouldn't be all that loud i don't think... my competition has two 12w7's off a jl1000 and it's rediculous.. i'm not sure if he's ported or not though :/

 

[psych0ticnemes1 5,000+ posts]

BTW, jl's site has a box designs for the 13.5 w7, just modify it for the 12, or i can help you make plans...

 

[chris96camaro 10+ year member]

How big would a box for two ported 12w7's have to be?

JL's site suggests this size for one: 22.75 in. x 15.5 in. x 15.5 in.

SO if i was to build a box for two ported w7's would i just have to double it? If i did that should i put a divider in the middle of the box and put a port on both sides? Or should they share the airspace?