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Re: Advanced Audio help.
It's because of efficiency differences between the two sets. You can use a resistor in series with the louder set if you want, just remember to use a resistor strong enough where it won't blow. These are 4ohm speakers right? The amount you attenuate them (in dB) will be:
Att=20*log(4/(4+Rr))
where Rr is the resistance you use
So if you want to attenuate them 3dB you would use 1.6 ohm resistors, if you want to attenuate them 6dB you would use 4ohm resistors, etc.
This is per speaker, so you would find the resistance you want, and put one of them in series with each side to attenuate them equally.
They'll each need to be able to dissipate:
Pr=(P*Rr*R)/(R+4)^2
That's in watts, where Rr is the resistance you use, R is 2ohm, and P is the power your amp puts out per channel at 2ohm.
To get the right resistor values and power requirements, you can wire multiple resistors together in series or parallel. So 2 4ohm 10w resistors in parallel would make a single 2ohm 20w resistor for example.
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Last edited by sr20de4evr; 09-28-2005 at 09:00 PM.
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