Posted June 27, 200718 yr i got to thinking today and was wondering how this would work out....Lets say you have a driver that is rated at 1000 rms watts, so you give it 1000 rms at 4 ohms and no problems. Now you get an amp that does 1000rms at 1 ohm is it the same to the driver???? I was just wondering if the BL of the sub would come into play or if 1000 is 1000 no matter what. Just wondering how it all would be effected.Thanks,Brock
June 27, 200718 yr Author i thought so but i just wanted to know for sure and it might be a dumb question but atleast i know now.
June 27, 200718 yr If you have a sub that has an impedance of 4 ohms, and an amp that outputs 1000WRMS at 1 ohm, you won't be getting 1000W @ 4 ohms unless the amplifier output is regulated....
June 27, 200718 yr 2 different amps i was talking about in theorythe impedence only affects the amps, a driver only sees 1000watts. If the amp is not 1 ohm stable, then that will obviously screw it up. Correct me if I'm wrong, but doesn't running an amplifier in 1ohm make it hotter cause it's not as efficient? I know there's less distortion if you run 4 ohms as opposed to 1ohm, but in the subwoofers low frequency, you might not even here it-John
June 27, 200718 yr It will make it hotter because more W created = more heat created as part of the process.
June 27, 200718 yr I don't think there's less distortion with higher impedences...I think the damping factor (how well the amp controls the sub) is what is affected, to help SQ.The "Bl" you refer to is actually Bl/Re...which obviously takes impedence into account.
June 27, 200718 yr I don't think there's less distortion with higher impedences...I think the damping factor (how well the amp controls the sub) is what is affected, to help SQ.The "Bl" you refer to is actually Bl/Re...which obviously takes impedence into account.BL^2 / Re. that number stays the same no matter how you wire the coils.
June 27, 200718 yr Amps will produce more distortion into a lower impedance load and will also run hotter (think JL Slash series or PG Xenon series which do the same power regardless of impedance) becuse there is more current running through the power supply and output devices. The difference in distortion is going to be inaudible with a good amp, but the difference in efficency can be pretty big.
June 29, 200718 yr I don't think there's less distortion with higher impedences...I think the damping factor (how well the amp controls the sub) is what is affected, to help SQ.The "Bl" you refer to is actually Bl/Re...which obviously takes impedence into account.BL^2 / Re. that number stays the same no matter how you wire the coils.^X3 "Bl" is the force factor of the subwoofer. You are not going to change that with changes in impedance. there..that's my $0.02
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