by joeyc » Sat Dec 30, 2006 11:50 pm
first of all I would fade to the front a little, so you don't hear the rear distorting. Second, use the amps crossover on high pass @ 80 hz approximately, to start with anyways. If you don't have a sub you could cross them over a bit lower I suppose to get a little more bass, but that would hurt the sq of the mid severly. The crossover for the cdt's are only going to have a low-pass for the mid, still allowing all bass frequencies to play causing distortion and hindering sq. I would use a 1 khz 0db test tone to set your gains up front, the 0db being most important. With a dmm you can measure the voltage your amp creates at the output, and this is A/C NOT D/C. you must calculate your target voltage with the formula, sqrt(rms x resistance)=voltage. ie 100 watt rms per channel @ 4 ohms would be sqrt(100x4)=20 volts. So with your dmm you would set the gain until you see 20 volts at the output while playing the 0db test tone. Most people say to set the volume at about 3/4 when doing this, I don't agree with that but it may depend entirely on the head unit in question
Anyways, its late, felt like helping someone out to pass the time. Good luck
first of all I would fade to the front a little, so you don't hear the rear distorting. Second, use the amps crossover on high pass @ 80 hz approximately, to start with anyways. If you don't have a sub you could cross them over a bit lower I suppose to get a little more bass, but that would hurt the sq of the mid severly. The crossover for the cdt's are only going to have a low-pass for the mid, still allowing all bass frequencies to play causing distortion and hindering sq. I would use a 1 khz 0db test tone to set your gains up front, the 0db being most important. With a dmm you can measure the voltage your amp creates at the output, and this is A/C NOT D/C. you must calculate your target voltage with the formula, sqrt(rms x resistance)=voltage. ie 100 watt rms per channel @ 4 ohms would be sqrt(100x4)=20 volts. So with your dmm you would set the gain until you see 20 volts at the output while playing the 0db test tone. Most people say to set the volume at about 3/4 when doing this, I don't agree with that but it may depend entirely on the head unit in question :p Anyways, its late, felt like helping someone out to pass the time. Good luck