fuZzBaLL143

i have a rockford 700s amp which specs are
175x2 @4 ohm
350x2 @2ohm
700X1 @4ohm bridged

my jl 12w6v2 can only be used in 8ohm and 2 ohm.

does neone know how to make this work??

Nicky Pass

You could wire it paralell to get a 8 ohm load, this way you will get around 400 watts for the sub, which should be plenty....you should have bought a dual 8 ohm coiled sub

kimxhiep1017

in series is 8 ohm and parellel is 2 ohm load, if you wired into 8 ohms load you get only 200W, and parellel 2 ohm load you get full 400W from your sub. i have same sub like your and i wired into 2 ohm load to the amp.

MiK3Y

the 12W6v2's are Dual 4ohms. you need to series the voice coils on each sub first. with that you'll have two 8ohm speakers. then wire the two subs in parallel to get 4ohms. bridge your amp and you will be running it at 4ohms mono.

kimxhiep1017

i agree with you, but he only has one sub bridged to the amp!

Nicky Pass

Just get 2 of them........

mcdanjw

Actually, you can treat each voice coil as a separate speaker.

So... just run your amp in 4 ohm stereo and run the left lead to one voice coil and the right lead to the other.

In your senario, that will put 175w to each coil for a total of 350 on the speaker total.

MiK3Y

you're right..i didnt notice that.

well then that means its time for a new amp or a different sub or add another W6v2. running the amp at 4ohms stereo is a waste of power...it will work, but its only running at half its potential. you need a mono amp if you want to keep the single W6v2. such as the Rockford Fosgate 500bd.

shawhite_RENAMED

hum..... why do you need a mon amp...... if you wire the speakers parralel across each other that will make the speaker 2ohms and the amp bridged (mono) will give you full power.... it is just like hooking 2 4ohms speakers up in parralel.... and mcdanjw you do not want to treat each voice coil as a seperate speaker 1) because you will not get full power out of the amp 2) because it will cause distortion.... (check out what jl audio says about it... http://www.jlaudio.com/tutorials/dvc/diffsignals.html).... also fuZzBaLL143 if you would like to know the correct way to wire a dual voice coil speaker check out jl audio web site under tutorials....

MiK3Y

he would need a mono amp because the amp is rated at 4ohms mono...not 2ohms mono. when you bridge an amp you need to cut the ohms in half to get the real load on the amp. true he could parallel the voice coils down to two ohms but the amp cant handle 2ohms mono. therefore he needs a mono amp. or like i said, a different sub or add another W6v2.

mcdanjw

That's funny... because about a year ago when I was perusing the JL Audio site, they had a tutorial on how to wire it using separate channels of one amp.

I suspect they had a lot of 'warranty work' to do from people wiring it wrong so decided to change the website.

You will see that Crutchfield says it is okay to wire it the way I described.

Crutchfield Wiring a Dual Voice Coil Speaker

True the amp won't put out as much power as it would if it was bridged, but it will also run cooler and more reliably.

Unless you are trying to win an SPL competition, 350w of bass is quite a bit.

mcdanjw

I actually just looked a little closer at your post, and you posted the page on the JL site that talks about running totally different signals to the voice coils....

Here's the page from the JL site that talks about wiring it with a single amplifier with the same signal on both channels. It wouldn't be a bad idea to use a Y-adapter on one channel coming from the deck before it enters the amp just to be sure you get the same signal... even though bass should be mono anyway.

JL Audio wiring dual voice coil options

fuZzBaLL143

ok i gave up i am just gonna get the Sony XM-1600GSD 1200 Watt 1-Channel Class D Amplifier =) but is this amp good?? cuz i heard sony amps suck, but the specs seem ok
300x1@4
600x1@2
does this seem alright?

shawhite_RENAMED

well mcdanjw i guess you could wire it like that but you would need a lot bigger amp..... and MiK3Y i dont understand why you can't wire the vc in parralel and bridge the amp and get it to work like that... wouldnt it be just like running 2 4ohms single vc speakers in parralel to a bridged amp.... the reason i am asking is cuz i am considering getting the 12w6v2 and was thinking i could run it this way but maybe now i might need to rethink my setup...

mcdanjw

The thing to remember is that with a dual 4 ohm voice coil speaker, your only choices of impedance (assuming you want to run your amp in mono) is 2 or 8 ohms, depending on wiring the coins in parallel or series, respectively.

Most amps, once they are bridged are only stable at 4 ohms. Any lower impedance, 2 omhs in this case, would likely damage the amp.

If you can find an amp that is stable at 2 ohms bridged, then this setup would work. It looks like that amp he just mentioned, the Sony XM-1600GSD is stable at this rating, so it should be alright.

To answer your question, it is EXACTLY like running 2 4 ohm single voice coil speakers in parallel.... this creates a 2 ohm load of which that Rockford amp is not stable in bridged mode. Herein lies the problem.

You could always buy a dual 8 ohm voice coil speaker, run the coils in parallel to get the desired 4 ohm load, and then bridge an amp like the Rockford to it.

It just all depends on how much power you think you need... as I mentioned before 350w total is a lot. Keep in mind that amp power must increase at an EXPONENTIAL level to increase SPL. It takes 10 times the power to get 2 times the loudness. A 600w amp is not going to be twice as loud as a 350w... it will be something like 1 1/4 louder.

fuZzBaLL143

that was a great explanation =) thanks!! i think i'll go return the rockford and get the sony then. thanks everyone!

CLS-D

I think that's the reason my amp is shutting down. It is wired in parallel, so when the impedience drops down to 2 ohms, it overloads the amp, b/c the amp can only handle a 4ohm load when it's bridged....
Think I just solved my problem...:thinking:
Fuck, this also means I need a new amp....

mcdanjw

That would do it!

CLS-D

Thanx guys, you really helped out...
I am getting JL 500/1, it should do the work....

kimxhiep1017

CLS-D
i don't know about PG Tantrum series but my PG ZXTitanium can handle either 4 ohm or 2 ohm bridged. the amp run warm and cooler after 2-3 hours playing music period. the sub kicks harder if you down to 2 ohm.

CLS-D

Thanx for the offer Kim, but I want to stick with JL.
It's got more power, cheaper, and more efficient for my specs....

kimxhiep1017

you right! the JL amp is more cheaper than PG. i can get it $350 bucks for 500/1 brand new in store, but for the PG ZXTi 400.2, man i can't get less than $400, the dealer store ask for $500 so i say should go for JL audio. JL amp pretty good amp.