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AMP Impedance Load

Old 03-23-2008, 10:35 AM
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AMP Impedance Load

Hello :

I've a 1000 RMS rockford amp, and have 2 rockford p3 12" subs each is dual voice coil and each coil is 4 Ohm.


At the moment the subs are wired in parallel , the Ohm load is 1 Ohm to the amp.

Now ive read up in the manual says i can go to 0.5 Ohm load with this amp .


Will it make any diference from 1 Ohm stable to 0.5 Ohm ?



Thanks.
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Old 03-23-2008, 07:46 PM
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for the most part the lesser load the amp 'sees' the more power it can put out, so if you could get your to subs to load the amp at 0.5 ohms (which you can't) then they would receive more power. if you got different subs that loaded the amp at 0.5 ohms the amp would dish out most power.
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Old 03-23-2008, 07:53 PM
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Originally Posted by SHOwagon
for the most part the lesser load the amp 'sees' the more power it can put out, so if you could get your to subs to load the amp at 0.5 ohms (which you can't) then they would receive more power. if you got different subs that loaded the amp at 0.5 ohms the amp would dish out most power.
I don't think I could have put it any better myself.

Lower impedance load on an amplifier means a greater power output. I've never seen a rockford amp that is stable that low. Impressive.
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Old 03-24-2008, 06:16 AM
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I bet the amplifier says .5 ohm stereo or the same as 1 ohm mono, that is if it is a 2 channel amplifier.

The reason an amplifier makes more power at a lower resistance is exactly that, lower resistance trying to stop the power from flowing.
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Old 03-24-2008, 06:31 AM
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Originally Posted by PerfectTones-Chris
I bet the amplifier says .5 ohm stereo or the same as 1 ohm mono, that is if it is a 2 channel amplifier.

The reason an amplifier makes more power at a lower resistance is exactly that, lower resistance trying to stop the power from flowing.
You smell like poo...
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Old 03-24-2008, 05:39 PM
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Originally Posted by oracle7
Hello :

I've a 1000 RMS rockford amp, and have 2 rockford p3 12" subs each is dual voice coil and each coil is 4 Ohm.


At the moment the subs are wired in parallel , the Ohm load is 1 Ohm to the amp.

Now ive read up in the manual says i can go to 0.5 Ohm load with this amp .


Will it make any diference from 1 Ohm stable to 0.5 Ohm ?



Thanks.


I'd be curious to see which Rockford amp says it is .5 ohm stable? Perhaps it is .5 ohm stereo.
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