JL Audio and Amp ?

[gotboom88]

hey everybody im new to SMD and kinda new to car audio and everything but I wanted to make sure I have my setup correct. I just bought 2 12 inch JL Audio WX12 subwoofers which is a 4 ohms single voice coil with 250 RMS with a 800 watt Sony Xplod amp. I have the speakers wired in Parallel. Here are the specs for my Amp.

Sony Xplod XM-ZR1252 800 watt 2 Channel Amp:

2 x 125W RMS (20hz to 20khz) @ 4ohm

2 x 170W RMS @ 2ohm

1 x 340W RMS ( 5hz to 50khz) @ 4 ohm (bridged)

so my question is..for each of my subwoofers which can handle 250watts RMS is it safe for me to run them in Parallel? I dont want to bridge them bc wouldnt it be to much RMS for both speakers or would they Equal out since its 2 speakers?

Im kinda new to car audio so sorry if its a dumb question.

[white4d96]

I had the same amp. If you paralleled them it would basically be bridged, which it wouldn't like, as you would be at a 2-ohm load.

I would run one sub off each channel. I ran my R's like that for a while and subs and amp were quite happy together. Not loud, but sounded good for a budget setup.

[gotboom88]

I had the same amp. If you paralleled them it would basically be bridged, which it wouldn't like, as you would be at a 2-ohm load.

I would run one sub off each channel. I ran my R's like that for a while and subs and amp were quite happy together. Not loud, but sounded good for a budget setup.

But it says 1 X 340W wouldnt the 1 stand for only one speaker in bridged? bc I wired each speaker in parallel which is negative to negative and positive to positive? What do you mean run it from each channel? sorry im new to car audio. I need help bc I dont want to run my speakers this way if its going to damage it in anyway so feedback would be greatly appreciated.

Edited September 12, 2010 by gotboom88

[white4d96]

The amp should have a left and right speaker output. Wire one speaker to each output. You will only get 140 to each sub, but the amp will be able to take it.

If you have the speakers paralleled to 'BTL' on the amp, you are bridging it at two ohms, which it will not like. I did that once and it instantly went into protect if memory serves.

And what the 1 refers to is how many channels are putting out that power. I.E. at 4 ohms you have 2 channels each producing 140 watts, whereas at 4 ohms bridged you have one channel producing 340.

Edited September 12, 2010 by white4d96

[gotboom88]

The amp should have a left and right speaker output. Wire one speaker to each output. You will only get 140 to each sub, but the amp will be able to take it.

If you have the speakers paralleled to 'BTL' on the amp, you are bridging it at two ohms, which it will not like. I did that once and it instantly went into protect if memory serves.

And what the 1 refers to is how many channels are putting out that power. I.E. at 4 ohms you have 2 channels each producing 140 watts, whereas at 4 ohms bridged you have one channel producing 340.

Heres how I have it setup. I drew it out on Paint lol. Is this correct??

Edited September 12, 2010 by gotboom88

[white4d96]

Yeah, you're good then. Except I don't think your gain should be up that high. I never had mine higher than 1, and even that pushed a hard clip.

[Guest jbinn]

Yes thats fine... run each sub on each channel for best results and 0.5v may be clipping but dont see how it'd hurt those woofers anyways.

[gotboom88]

Yes thats fine... run each sub on each channel for best results and 0.5v may be clipping but dont see how it'd hurt those woofers anyways.

It really doesnt clip a whole lot. When I move it down to 1v I dont get as much bass as I want it to. Can I just Adjust it to 1V and go up on the bass boost a little bit? Whats your recommendation?

[Guest jbinn]

Never touch the bass boost, I don't even know why they feature it, just stick with 0.5 unless you hear distortion or smell burning...

[gotboom88]

Never touch the bass boost, I don't even know why they feature it, just stick with 0.5 unless you hear distortion or smell burning...

One more question...What about the Bass feature on my Head unit? Not sure if its the same as Bass Boost?