Graham Fry
New Member
Hi,
I have a strange problem with my otherwise excellent ProJect Tube Box DS phono preamp. Every 63 seconds I get a popping/woodpecker kind of noise come through.
I have eliminated the amp, speakers, turntable and cartridge.
The noise is there right from start up and doesn't change despite how long the preamp is on/active. The noise is there whether music is playing or not.
Does anyone have any ideas what this could be? I have also tried all the various combinations of jumpers on the back including subsonic filter and it is always present.
Help!
Thanks, Graham
I have a strange problem with my otherwise excellent ProJect Tube Box DS phono preamp. Every 63 seconds I get a popping/woodpecker kind of noise come through.
I have eliminated the amp, speakers, turntable and cartridge.
The noise is there right from start up and doesn't change despite how long the preamp is on/active. The noise is there whether music is playing or not.
Does anyone have any ideas what this could be? I have also tried all the various combinations of jumpers on the back including subsonic filter and it is always present.
Help!
Thanks, Graham