What Can I Do To Fix This???

DigitalSpuder · #1 02-16-2005, 08:09 PM

here is what I am working with

JL 500/1 mono (rates 1.5 to 4 ohms)
2 JL 12" w6V2 subs

I ran the mono amp to the 12's and they are in parallel at 1 ohm. I thought this would be an ok idea since the tutorial on JL's site has a picture of this set up at 1 ohm on their website.

The difference in sound compared to the series set up I was running is impressive...even one sub running in parallel at 4 ohms without being secured to my box was better.

I have the subs in a store bought ported box which I am ok with, but here is the problem.

I know this setup should really pound but when turned too loud, it bottoms out and MY GOD!!! it's annoying. It sounds horrible!!!!!

Does anyone have any idea what might be causing this? Any ideas would be great.

ngsm13 · #2 02-16-2005, 08:20 PM

Quote:

Originally Posted by DigitalSpuder

here is what I am working with

JL 500/1 mono (rates 1.5 to 4 ohms)
2 JL 12" w6V2 subs

I ran the mono amp to the 12's and they are in parallel at 1 ohm. I thought this would be an ok idea since the tutorial on JL's site has a picture of this set up at 1 ohm on their website.

The difference in sound compared to the series set up I was running is impressive...even one sub running in parallel at 4 ohms without being secured to my box was better.

I have the subs in a store bought ported box which I am ok with, but here is the problem.

I know this setup should really pound but when turned too loud, it bottoms out and MY GOD!!! it's annoying. It sounds horrible!!!!!

Does anyone have any idea what might be causing this? Any ideas would be great.

Well, I thought the VC config on the w6v2's was weird. So you have 2 12's now? And they are in a pre-fab store box? Sealed?

In all honesty, you can give them plenty more power! That's one thing. But to make the most out of your current install, go with a custom ported enclosure, about 4 cubes NET @29hz for more output, and the ability to hit the lows better. If need, I design custom ported boxes and lay them out for you including a cut-sheet. So if you're interested, PM me. peace

NG

Diceman83 · #3 02-16-2005, 09:53 PM

as nice as NG's suggestion is, it sounds like the amp doesn't like the 1 Ohm configuration, if it's really that. I'm a little confused as to what the subs are. If they're Dual 2 Ohm Voice coils, running 4 of those in parallel would give 0.5 Ohms. Running one in series would be 4 Ohms. If you're running at 0.5 ohms, it's no wonder that you're bottoming out. A better configuration would be having each sub wired in series, and then the both of them wired in parallel. That will give you a total of 2 Ohms, which is better for your amp. It's kinda hard to get to 1.5 ohms; I think the only way is with 3 Ohm coils. Even if you do one sub in parallel and the other in series, it gives you 0.8 ohms, which is still really low.

bumpinstang77 · #4 02-16-2005, 09:54 PM

w6v2's come in dual 4 ohm only..... wire your subs in a series parallel combination for a 4 ohms load.

bumpinstang77 · #5 02-16-2005, 09:55 PM

Also that amp is rated for 1.5-4 ohms putting out 500 watts. Do not run below 1.5 and you won't get as much power above 4 ohms.

Diceman83 · #6 02-16-2005, 10:11 PM

hey, if you do one in series and one in parallel, you get 1.6 ohms! Would that work alright bumpin? Having one sub's VC's in a serial config and the other parallel?

ngsm13 · #7 02-16-2005, 10:14 PM

Quote:

Originally Posted by Diceman83

hey, if you do one in series and one in parallel, you get 1.6 ohms! Would that work alright bumpin? Having one sub's VC's in a serial config and the other parallel?

He only has 2 subs man... lol. Two dual 4ohm subs= 1ohm or 4ohm load

NG

Diceman83 · #8 02-16-2005, 10:21 PM

really.... you've got 4 4Ohm coils to configure as whatever... if you do 2 of them in series (to 8 Ohms) and the other 2 in parallel, it gives 1.6 ohms.

The formula goes
________1________
1/(4+4) + 1/4 + 1/4

which equals 1.6 Ohms.

Hey, it can't hurt to try it, he's already been abusing it at 1 Ohm for a while now.

Diceman83 · #9 02-16-2005, 10:33 PM

wait... I guess I'm thinking too much electrical stuff... the power going to one speaker would be much larger than the other, which is why that configuration probably won't work very well for the speakers. The amp would be happy with it though, I would think.

bumpinstang77 · #10 02-16-2005, 11:04 PM

LOL there's three ways to wire 2 Dual voice coil subs using all coils.....all +'s to amp + all -'s to amp - thats a paralell/parallel connection resultin in 1 ohm. Then you can run parallel/series combination.....which is what's needed here.... where you do one of two things connect each subs coils in parallel then wire the two subs in series.....which is more efficient since efficiency slightly rises in a sub w/ parallel connection of the VC's as oppised to series..... the other way is to wire the subs coils in series then the subs in parallel. this results in a 4 ohms load. The last wa to wire is all series which is a 16 ohm load.

Diceman83 · #11 02-16-2005, 11:19 PM

I'd like to see him try it my crazy way anyway... one speaker will get more power than the other one, but I think that's ok for these... the overall system will run at a lower impedence, which is good, right?

threedd97 · #12 02-17-2005, 12:43 AM

There's a reason people don't do these off the wall configurations, dice. It reminds me of that retarded post on CD where a guy tried to mount his amp under the hood of his truck.

ngsm13 · #13 02-17-2005, 01:15 AM

Quote:

Originally Posted by Diceman83

wait... I guess I'm thinking too much electrical stuff... the power going to one speaker would be much larger than the other, which is why that configuration probably won't work very well for the speakers. The amp would be happy with it though, I would think.

Keep in mind each sub has TWO voice coils...you can't think of it as 4 individual coils...that's when shit gets fucked up. The only reall reason for DUAL voice coils anyways is wiring flexibility! peace

NG

PS: Listen to what I said up top!

Diceman83 · #14 02-17-2005, 08:32 AM

ok ok... I'll listen to the voices of experience. Would it really damage the system to have it wired strangly? The power equation puts the parallel sub taking 4 times more power as the serial sub, which like I said isn't terribly good for the subs. Then you'd have to factor in things like shared air volume in the box, and other factors... yeah, definately not good for the subs. Probably a good way to blow them if you wanted to, though!

DigitalSpuder · #15 02-17-2005, 11:21 AM

Thanks everyone for the ideas, I want to keep both subs running on the same power, just to keep a clean hook-up going.
Someone mentioned that the fact the amp is not liking the 1 ohm load could be causing the subs to make that terrible sound...is that true? Or could the box be causing this?
Well, I'll be back, going to go and run these suckers in series/parallel for a 4 ohm load.

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