View Full Version : SVC or DVC subs with 4 channel amp
mlrman
05-07-2006, 01:08 PM
I have a Rockford Fosgate P8004 4 channel amp, 100 x 4 @ 4 ohm, 200 x 4 @ 2 ohm, or 400 x 2 bridged @ 4 ohm.
Using 2 10" subs, what is the best match......
SVC 4 ohm, bridged
or
DVC 2 ohm, and run one channel to each voice coil.
southpawboston
05-07-2006, 01:17 PM
you can go with the SVC 4 ohm subs and hook each up to one channel of the amp in bridged mode. each SVC sub will be getting 400W @ 4 ohms.
you can not hook up each coil of a DVC up to a channel. the coils should be wired together and hooked up to one channel. so you can also go with the DVC 2 ohm subs, and hook the coils in series to arrive @ 4 ohms. then hook each DVC sub to one channel in bridged mode.
so basically, you can go with either 2 SVC 4 ohm subs or 2 DVC 2 ohm subs.
mlrman
05-07-2006, 01:26 PM
you can not hook up each coil of a DVC up to a channel. the coils should be wired together and hooked up to one channel. so you can also go with the DVC 2 ohm subs, and hook the coils in series to arrive @ 4 ohms. then hook each DVC sub to one channel in bridged mode
hey, thanks. I didn't realize that! I have never had DVC speakers, but their flexibility is making me lean that way.
kizzo
05-07-2006, 10:07 PM
DVC 4ohm speakers are awesome in flexibility, especially if you have an amp that gets down to 1 ohm, cant beat it.
you can go with the SVC 4 ohm subs and hook each up to one channel of the amp in bridged mode. each SVC sub will be getting 400W @ 4 ohms.
you can not hook up each coil of a DVC up to a channel. the coils should be wired together and hooked up to one channel. so you can also go with the DVC 2 ohm subs, and hook the coils in series to arrive @ 4 ohms. then hook each DVC sub to one channel in bridged mode.
so basically, you can go with either 2 SVC 4 ohm subs or 2 DVC 2 ohm subs.
If you go with a SVC 4 ohm sub, you will need to bridge the four channels of the amp into two (front left and right bridged together, rear L&R bridged together). Then you can wire each sub to each set of bridged channels.
You CAN wire each coil of a DVC sub to each channel. The amp will see each voicecoil as a seperate speaker. This is not ideal though, but it can be done. Or you can wire the VCs in series and use it like a SVC 4ohm sub. But then you might as well just buy a SVC sub.
So basically, if you already have the amp and are buying subs, your best bet is SVC 4ohm subs, but DVC 2ohm can work also.
As to what works best, that depends on your needs. For instance, a DVC 4ohm sub would not work best for this application as the ohms would either be to high(8 ohms)for the amp to make full power or to low (2 ohms) to use with a 4 channel amp bridged.
mlrman
05-10-2006, 10:09 PM
You CAN wire each coil of a DVC sub to each channel. The amp will see each voicecoil as a seperate speaker. This is not ideal though, but it can be done.
I am getting conflicting info on this subject from a lot of different sources! I don't see why it CAN'T be done, however I don't see it as the ideal setup. Especially since wiring DVC 2ohm subs in series and bridging the 4 channel amp achieves the same wattage. (one DVC sub in series at 4 ohms per for each bridged channel)
anyway, thanks for the reply!
As to what works best, that depends on your needs. For instance, a DVC 4ohm sub would not work best for this application as the ohms would either be to high(8 ohms)for the amp to make full power or to low (2 ohms) to use with a 4 channel amp bridged.
true, true. that's why I bought two RF stage 3 DVC 2 ohm subs. I will wire each sub in series as mentioned, and that will give each bridged channel a true 400 watts RMS at 4 ohms per channel.
I decided on the DVC for the flexibility, and also the extra power handling capabilities.
thanks again for everyone's input.
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