2. amps-preamps
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Poping noise starting up Mcintosh MA 6900

When I turn on the amp using the standby button, I get a popping noise that is audible through the speakers. Not loud, but can be heard. The amp is just 1 week old. I had the MA 6500 in the same set-up and liked it so much I upgraded to the 6900. The 6500 made no noise, none. Is this inherent to the design (autoformers) or is there a problem? If anyone has the same experience or has suggestions, please respond, thanks.
ibog1
aball
2,016 posts
 
Transformer coupled outputs cannot pass DC. This is fundamental to a transformer of this type. As for the retailer exchanging the amp - be happy you bought a McIntosh. Krell would not do this for me a few years back. I had to send it off and wait for several months. Needless to say, I don't have Krell any more. Arthur
gpdavis1
50 posts
 
Am not sure why you would be unhappy with McIntosh. In less than 48 hours of posting your received a new replacement amp. Pretty good, if you ask me. You were lucky you didn't have to wait for one to be shipped in.
shawn119e
1 posts
 
HELP! I have the popping noise too on my McIntosh MA6900. When I flip the power switch on, a slight pop goes to speakers. When I turn on the standby, a very loud pop goes to the speakers and I'm afraid it is going to ruin my tweeters or something else. How did you solve your problem?? I need help if you can please
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