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Amp - subs and speakers

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Old Jul 14, 2012 | 07:21 AM
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Amp - subs and speakers

Could I run my rears and subs up to this amp? Profile California 1200sx Amplifier 300w x 2 265-424
Old Jul 14, 2012 | 09:39 AM
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Could run either rears or sub depending on the specs specs of the subs?
Old Jul 14, 2012 | 03:51 PM
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Originally Posted by Sonic
Could run either rears or sub depending on the specs specs of the subs?
I want to run both but these are the subs I have. Audiobahn AW1051T (AW-1051T) 10" Dual 4 ohm Natural Sound Sub
Old Jul 14, 2012 | 04:13 PM
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Well you can run the rears on one channel and on the other channel you can run 2 subs at a total of 4 ohm load, which would give 150 watts rms to each sub, that is, the subs will only receive half rated power. Or you can run one sub at full power on that one channel.

Alternatively, if you want to run both subs alone on that amp, wire them to a 1 ohm load and have more than enough power.

Assuming the amp does rated power.
Old Jul 14, 2012 | 05:15 PM
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I'll start with the bad news. This combination of amp/sub/rear speakers is not ideal.
I'll try to explain as best as my limited knowledge will allow. Hope someone corrects my mistakes...
If you put both rear speakers on one channel, they'd have to be wired in parallel. This will give you an 8 ohm load. Probably not ideal. I'm uncertain as to whether or not the amplifier would function properly when one channel sees an 8 ohm load, while the other sees a 1, 2, or 4 ohm load.
Then, like Sonic said, you're stuck wiring the voice coils in series on each subwoofer, then the subwoofers in parallel to drop the load back down to 4ohm. Assuming you want to use both. Like Sonic said, this will yield a 300W output on the other channel. Therefore, each sub will only get 150W. If that changes your mind into using only one sub, you encounter another snag. One dual 4 ohm sub, can be wired for a 2ohm load, or 8 ohm load. If you put that 2 ohm load on one channel, you'll have 600W going to a sub rated for 300W (the 600W max is irrelevant). So you're kinda stuck with a less than ideal setup.
If you like the amp, then I suggest getting the subs in a dual 2 ohm voice coil configuration. That would allow you to place a 2 ohm load on the 2nd channel, and the subs share the 600W output.

I'm hoping someone chimes in about having the unbalanced load on the channels. Curious to know what the answer might be...

Help that helped a little.
Old Jul 14, 2012 | 11:40 PM
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Don't run your rears on that amp. Just the subs.

Wire each sub in parallel to each channel, or bridge the amp and wire the subs to a final 4 ohm load (each sub in series being 8 ohms, and then parallel the subs together for 4 ohm total).

They will receive 450w RMS each, which is above their rating (granted that the amp puts out rated power). Don't crank the gain or bass boost or the subs may reach thermal limits fast and blow.

Get a smaller amp for your rears.
Old Jul 22, 2012 | 12:16 PM
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I have not amplified a pair of rear speakers in at least 10 years. Fronts, yes, but not rears.

However, should you choose to amplify your rears along with your subs, you will need a 3 or 4channel amp, not a 2 channel, or two amplifiers.
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