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Mark Levinson nr 26 vintage
Mark Levinson nr 26 vintage
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Old 18th August 2010, 03:18 PM   #1
Pierre1984 is offline Pierre1984
diyAudio Member
Join Date: Aug 2010
Default Mark Levinson nr 26 vintage

Hi, there,
I own since quite some time a beautifully sounding ML 26 preamp with MC/MM phono inputs and a 20.5 amp.
For a while I did not use the phono input, having switched to CDís as main source. As I recently re-discovered a pile of vinylís in my attic, I wanted to play them with my new ProJect turntable and my good old Koetsu cartridge.

The right channel performs beautifully, yet to my dismay the left channel provides much less gain and makes a wobbling sound at about 5 to 10 Hz (the frequency seems more or less affected by the sound levelÖ.). In idle condition, when no signal is applied e.g. the phono needle rests on the arm support there is no sound nor noise at all and everything is quiet (as it should be).

Could anyone kindly advise me how to solve this problem ?
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