hiroman_77 Posted August 1, 2012 Report Share Posted August 1, 2012 Hey Guys, 1st post. Anyway, I was tuning my wife's system with the DD-1. I was able to tune the sub amp and deck without issue. When testing my McIntosh MCC446 6 channel amp, I came across something that I haven't seen before. I have it set in 4 channel mode meaning channels 1&2 and 3&4 are bridged. Those tuned fine. Channel 5 also tuned fine. When trying to adjust the gain on Channel 6, I received no signal on the positive terminal. For the heck of it, I touched the positive probe on the negative terminal and got a signal and was able to tune it also. To double check that the amp was working correctly, I switch from 4 channel mode to six channel mode. After switching the rca's around, I found the same results on channels 2 and 4. The positive terminal is essential dead (no signal), but the negative has a signal. When in bridged mode I plug the speaker wires on channel 1 positive terminal and channel 2 negative terminal. I assume that channel 1 positive terminal is out of phase compared to channel 2 negative terminal. Can anyone confirm this with experience with similar McIntosh amplifiers? I bought this amp about 15 years ago, so maybe their technology has changed drastically since then. Thanks for the feedback. Quote Link to comment Share on other sites More sharing options...
TonyD'Amore Posted August 28, 2012 Report Share Posted August 28, 2012 Many amplifiers that are bridgeable have the signal on the Left + terminal and Right - terminal. Quote Link to comment Share on other sites More sharing options...
Noel989 Posted August 28, 2012 Report Share Posted August 28, 2012 If you read the manual they talk about that Quote Build Log - http://www.stevemead...-cruiser-el-pt/ Link to comment Share on other sites More sharing options...
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