c-hing, if you think there's problem in 相位, that means you can hear the difference when you:
1. reverse the +/- of speaker cables, or
2. you switch the phase button at the back.
I think if you feel the sound is better when you do any of the above, then there's no need to follow the rule. Just choose what you think can produce the best sound. We should enjoy listening music rather than following the rules.
However, if you think there's defect in hardware, then you have right to call for warranty service.
As I know, there are several circuits from power socket to speaker:
1. Wall socket (AC) -> Amp
2. Amp (AC to DC)
3. Amp (DC amplify, either single-end or push pull)
4. Amp (convert to AC again) -> Speaker
The place that can have 相位 problem is in step 1 and step 4. From the manual, luxman 507u can detect the 相位 problem in step 1. When there's problem, the light near the AC power-in socket will be lit. But for step 4. We could just check by inspection.
[複製鏈接]
發表於 2010-5-19 16:05
