How to wire subwoofer

[slightlyhuman]

got an L7 solo-baric for cheap off ebay. it's a DVC 4-ohm.

i have an old amp laying around( Sony XM-2100GTX) it's a 2-channel 600w amp.

i'll buy a better amp sooner or later but this will do for now(i hope).

how should go about wiring it?



going to get a real amp for the L7S10 but I decided to use the sony amp for my 4x 6.5s in the doors(kickers).

how should i go about wiring them?

 

[Riverhound777]

Well you would wire it like this: Diagram

But that would work out to 8ohm on your amp. Your amp puts out 250watts at 4ohm. You need a 2ohm DVC sub to get that.

But anyway putting 250 watts to that sub is grossly underpowering it. I would reccommend a new amp.

 

[AgaBoogaBoo]

This is for a car? If so, do you have any wiring at all? If not, find a DIY for this - depending on the car, you may or may not have to drill through the firewall. I'd recommend just having some place install it for you, that's the easiest way.

 

[Doodoo]

You have a few options...you can wire it in series which will give you 8 ohms. It won't give the sub enough power, but your amp will handle it fine. You can also wire it in parallel to give it two ohms. This will most likely fry your amp.

 

[slightlyhuman]

i can run all the wires(amp, rempte, ground, etc).

doodoo, why would it fry the amp? couldn't i wire it in parallel giving it 2 ohms and put each voice coil on a different channel?

again, i'm getting a better amp soon.


for the new amp, what shoud i look for? something that will put out 400w+ in a 2-ohm load?

it's going in a 4 dr yukon

 

[LikeLinus]

Originally posted by: Doodoo
You have a few options...you can wire it in series which will give you 8 ohms. It won't give the sub enough power, but your amp will handle it fine. You can also wire it in parallel to give it two ohms. This will most likely fry your amp.

This actually depends on the amp. If the amp is stable at 2 omh @ 1 channel bridge mono, he'll be just fine.


Is this the amp?

http://www.crutchfield.com/ISEO-rgbtcspd/cgi-bin/ProdView.asp?i=158XM2100

That amp is NOT 600w. It's 100 per channel and 250 bridge mono at 4 ohm.

 

[Riverhound777]

Originally posted by: LikeLinus

Originally posted by: Doodoo
You have a few options...you can wire it in series which will give you 8 ohms. It won't give the sub enough power, but your amp will handle it fine. You can also wire it in parallel to give it two ohms. This will most likely fry your amp.

This actually depends on the amp. If the amp is stable at 2 omh @ 1 channel bridge mono, he'll be just fine.


Is this the amp?

http://www.crutchfield.com/ISEO-rgbtcspd/cgi-bin/ProdView.asp?i=158XM2100

That amp is NOT 600w. It's 100 per channel and 250 bridge mono at 4 ohm.

It is not 2ohm stable, thus it will fry if you try it.

It doesn't even say what it will put out at 8ohm, but probably not much. The minimum that sub can handle is 50watts, and that is not even going to move it. You really want to give it at least 500 watts, more like 750watts.

Oh and is this a 10inch or 12inch sub? If you don't care about that amp, you can try it at 2ohm and it might last a week, or it might toast after a few mins. Sony do not make very good amps.

 

[Doodoo]

Originally posted by: DP
i can run all the wires(amp, rempte, ground, etc).

doodoo, why would it fry the amp? couldn't i wire it in parallel giving it 2 ohms and put each voice coil on a different channel?

again, i'm getting a better amp soon.


for the new amp, what shoud i look for? something that will put out 400w+ in a 2-ohm load?

it's going in a 4 dr yukon

It would fry the amp because it would see a load of 1 ohm when bridged mono. When you wire them in series or parallel you end up with only one negative and positive....so its similar to one voice coil...but the ohms have changed. Solobarics are power hungry...so the more power you can throw at it the better. Look for an amp that is 2ohm bridged mono stable. Only most of the higher end amps are capable of this.

I've been running a Cadence a5hc for a few years and I have two 4ohm SVC IDQ's wired in parallel going to it. Each 12" is getting about 300 watts.

 

[slightlyhuman]

Originally posted by: LikeLinus

Originally posted by: Doodoo
You have a few options...you can wire it in series which will give you 8 ohms. It won't give the sub enough power, but your amp will handle it fine. You can also wire it in parallel to give it two ohms. This will most likely fry your amp.

This actually depends on the amp. If the amp is stable at 2 omh @ 1 channel bridge mono, he'll be just fine.


Is this the amp?

http://www.crutchfield.com/ISEO-rgbtcspd/cgi-bin/ProdView.asp?i=158XM2100

That amp is NOT 600w. It's 100 per channel and 250 bridge mono at 4 ohm.

yes

 

[LikeLinus]

Originally posted by: Doodoo

It would fry the amp because it would see a load of 1 ohm when bridged mono. When you wire them in series or parallel you end up with only one negative and positive....so its similar to one voice coil...but the ohms have changed. Solobarics are power hungry...so the more power you can throw at it the better. Look for an amp that is 2ohm bridged mono stable. Only most of the higher end amps are capable of this.

I've been running a Cadence a5hc for a few years and I have two 4ohm SVC IDQ's wired in parallel going to it. Each 12" is getting about 300 watts.

What are you talking about? A 4-ohm DVC sub that is wired in parallel is 2-ohm to the amp, NOT 1-ohm. The amp doesn't lower the ohm of the sub when it's bridge, it's just bridging the channel to push all available power to one channel - instead of two.

 

[Doodoo]

I probably worded it wrong. It is 2 ohms to the amp. To simplify things in my head i see it as 1 ohm when bridged...since its similar to 1 ohm stereo. Its also not as simple as just pushing all its available power to one channel. If that was the case, it wouldn't matter how many ohms it saw. All it would do is push power.

 

[spidey07]

Get a new amp.

It doesn't have to be high quality, just powerful. Look for doubling of the power when impedance is halved. Wire the voicecoils in parallel and enjoy.

 

[slightlyhuman]

going to get a real amp for the L7S10 but I decided to use the sony amp for my 4x 6.5s in the doors(kickers).

how should i go about wiring them?

 

[Doodoo]

Not sure if this would work...but you could wire each pair in parallel and then wire the two pairs in series to get 4 ohm. Then run that bridged to your amp.

 

[slightlyhuman]

hmmmm... wonder if i dont do it that exact way if it would fry anything?

i just wanted to use this free amp for at least something

 

[slightlyhuman]

:beer:

 

[jtvang125]

Originally posted by: Doodoo
Not sure if this would work...but you could wire each pair in parallel and then wire the two pairs in series to get 4 ohm. Then run that bridged to your amp.

Why would you do this? You'll be getting a mono sound and totally kill the stereo seperation. What he should do is wire the amp in stereo and wire the F-Left and R-Left in parallel and F-Right, R-Right in parallel to each channel. He'll lose the front to rear fader but atleast he'll maintain the left and right stereo seperation. The amp will see 2 ohms on each channel and up the wattage a bit as well.

 

[Hyperlite]

whats the rms on the kickers in the doors?

 

[slightlyhuman]

Originally posted by: Hyperlite
whats the rms on the kickers in the doors?

50w rms/100w peak