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One Amp, Two Channels, Two Subs....what to do?
Posted: Mon Oct 20, 2014 11:26 am
by ripNdeb
My question is: run the amp harder and parallel the subs on one channel OR take the (single) output of the DCX and put it into one channel and run that channel into the other channel on the amp and run 8 ohms, using both sides of the amp?
I don't necessarily need the other channel for something else but, the question is, lighten the load (amp) or raise the wattage (1 channel parallel)?
The amp is an IPR 3000. The signal chain is mixer, DEQ2496, DCX2496.
Re: One Amp, Two Channels, Two Subs....what to do?
Posted: Mon Oct 20, 2014 11:30 am
by Bruce Weldy
ripNdeb wrote:the question is, lighten the load (amp) or raise the wattage (1 channel parallel)?
The amp is an IPR 3000. The signal chain is mixer, DEQ2496, DCX2496.
Using one channel doesn't raise the wattage per speaker. Putting one on each channel gets you 525 watts each, doubling 'em up on one channel gets 950 for both, or 475 each. Split 'em onto two channels.
Re: One Amp, Two Channels, Two Subs....what to do?
Posted: Mon Oct 20, 2014 8:40 pm
by bitSmasher
Here's a quick learning exercise...
http://www.rapidtables.com/calc/electri ... ulator.htm
Rated Power (2 x 2 ohms) - 1,490 watts per channel
= 55 volts
Rated Power (2 x 4 ohms) - 840 watts per channel
= 58 volts
Rated Power (2 x 8 ohms) - 440 watts per channel
= 58 volts
The difference is the current is increased, by having lower impedance. That gives the bigger numbers.
In your case, one speaker per channel will result in the same voltage accross both of them (hence same displacement) as parallel on one channel, but power handling and heat disappation is spread accross both channels - much better for the amp!
Re: One Amp, Two Channels, Two Subs....what to do?
Posted: Tue Oct 21, 2014 9:47 am
by ripNdeb
Very good; thanks guys
Dana