I am thinking of buying a sub rated at around 700w RMS at 2 ohms. Can I connect the 2 channels of my sub into the DVC on the sub? I think this is considered, "independent" on the DVC. If i do this with my amp, will it add up the RMS to 680w?
Running seperate channels to each voice coil on a DVC sub is not recommended.
If you want to use a sub that has DVC, go with 8 ohm DVC and wire the coils in parallel or 2 ohm DVC and wire the coils in series. Both will result in 4 ohms.
Touring, i don't think i can use a 4 ohm DVC. If i wire it in series, it would add up to 8 ohms and if i wire it in parrallel, it would only be 2 ohms. So that means that i wouldn't be able to use my amp.
88LE, why isn't this method recommended? I also want to put the wiring in series. This means that i would need to use a 2 ohm sub and this will add up the power to 680w. But i'm not sure if it'll work.
My guess is that the outputs from the two channels could be different and affect the sound and sub.
If you do it using 88LE's method, you would only be able to get 340W RMS so this amp would not be ideal if you want more power than that for one sub. You could use the remaining 2 channels to amp front speakers if they're not already amped. Either that or get a second sub or a 2 ch or mono amp.
In my description above, you would bridge that amp to 2 channels which means it cannot handle 2 ohm load, but 4 ohms is fine. You would then hook up one channel to each voice coil on the sub which is why I suggested 4 ohm DVC.
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2007 Camry 2.4L 5M
Last edited by touringcamry; 01-26-2008 at 03:49 AM.
What happens when you run different signals into each voice coil of a dual voice coil speaker?
Essentially, if there is any difference between the signals driving each coil at any given point in time at a given frequency, the voice coils will either fight each other or help each other, depending on the phase relationship of the two signals at that frequency. This is not the same thing as bridging an amplifier and can create undesirable non-linearities and distortion because different input signals at each voice coil create shifts in the speakers electrical parameters.
For this reason, it is advisable to mono-bridge the amplifier whenever possible and connect the voice coils of the dual voice coil speaker together in parallel or series. If a dual voice coil subwoofer must be wired to two independent channels, the inputs to both channels should ideally be the same (summed mono) and every effort should be made to match the gains of both channels as closely as possible.
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2007 Camry 2.4L 5M
Last edited by touringcamry; 01-26-2008 at 03:58 AM.
I also want to put the wiring in series. This means that i would need to use a 2 ohm sub and this will add up the power to 680w. But i'm not sure if it'll work.
2 ohm DVC wired in series = 4 ohms. The sub will see 340W.
680W total is only possible if your adding 340W + 340W (2 x 340 @ 4 ohms). Even so, each of the 2 channels is at 340W.
No way your going to get 680W into 1 channel, the amp is just not capable of it. If you had a 2 channel amp or a monoblock, it would be a different story.
Thanks you guys for trying to help me . Here's are some more details.
Touring, those diagrams are actually my resource for trying to wire this thing . I'm trying to "independently" wire it.
If I only input 1 rca input instead of 2 from the headunit into the amp, wouldn't this give me only 1 signal. So that means that i wouldn't have to worry about left and right signals (stereo). So all of the channels will be the same.
Another thing is that I don't want 2 subs. I already have 2 older jl subs connected to it that handles it alright. Its just that i want to have only 1 sub for space purposes.
88LE, I'm not tryin to have 680w rms coming out of the channels. I just want 680w rms coming into a sub.
I want the power coming out of the 2 already bridged channels to add into 1 sub.
If I only input 1 rca input instead of 2 from the headunit into the amp, wouldn't this give me only 1 signal. So that means that i wouldn't have to worry about left and right signals (stereo). So all of the channels will be the same.
You have a 4 channel amp, so theres front L+R and rear L+R. When you bridge the amp into 2 channels, front L+R combine and same with rear L+R.
You can run 1 set of RCAs from the headunit, but you'd have to use 2 female to male Y adapters.
So either run 2 sets of RCAs from the headunit or run 1 set and use Y adapters.
I still don't recommend wiring the coils independently on a DVC sub, but its your amp and sub so do whatever you want.
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. Here's are some more details. 
. I'm trying to "independently" wire it. 
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