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

[jmass03 10+ year member]

Which amp? Will the JL 1000.1 work to power both, or is that underpowering the subs? Sealed box alright, or do these require a ported box? It's going in a compartment inside a boat.

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[chaunb3400 10+ year member]

2000rms would be optimal

 

[bones22 5,000+ posts]

http://mobile.jlaudio.com/products_subs_pages.php?page_id=35

 

[808skindiver 10+ year member]

i would say around 47 watts

 

[LOW ET 10+ year member]

jl says 300-1000 per sub with a 750 rms rating to each.

1000/1 will power both subs

 

[jmass03 10+ year member]

Soo...a 1000.1 JL won't be enough?

 

[LOW ET 10+ year member]

Soo...a 1000.1 JL won't be enough?

it will work fine.

http://mobile.jlaudio.com/products_subs.php?series_id=9

look at bottom of page in the link

 

[bonesninja 5,000+ posts]

it'll work....you'll probably want more. I'd go sealed

 

[denim 5,000+ posts]

It is plenty.

 

[jmass03 10+ year member]

I am going with a sealed box.

 

[TeoTorriatte 10+ year member]

Wow, 6 different threads in this section and 2 in amplifiers... all asking pretty much the same thing. Nice work.

So yeah, a 1000/1 will work fine for a pair of 12 or 13W7's. You will gain ~3 dB at full volume by running a full 1kw to each, but in if SQ is your goal, you will be plenty loud as it is.

 

[jmass03 10+ year member]

Wow, 6 different threads in this section and 2 in amplifiers... all asking pretty much the same thing. Nice work.
So yeah, a 1000/1 will work fine for a pair of 12 or 13W7's. You will gain ~3 dB at full volume by running a full 1kw to each, but in if SQ is your goal, you will be plenty loud as it is.

How do you figure this?

 

[FreeBasser 10+ year member]

running double the power theoretically gives you a 3 db boost, just like doubling the surface area of subs in the set up does (ie 4 12's instead of 2). Of course, it can be less than that or more than that because of other real-world factors. Doesn't sound like much, but you can hear the difference.

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.

Of course, running two JL 1000/1 would require an electrical overhaul to truly get the most power out of them both, so thats even more $$$.

hope that helps.

 

[FreeBasser 10+ year member]

ya, so this is actually a duplicate post, i just can't figure out how to delete a post yet, so I just edited it goodbye...

 

[babaganoush123 10+ year member]

id go ported it'll be louder to. 4 cubes at 32hz....and more efficient.