2. analog
  3. 173702-89448

Turntable Hum

Any help appreciated!

Low pitched hum coming from TT input ...even when TT is not running . Hum is noticeable at about 1/4 volume & really bad at 50%

Manley Monoblock Snappers

VPI Scout w Hana MC cart right next to amp on table (moved TT away from amp to floor made 0 difference)

Allnic 1202 Phonostage grounded to VPI TT (on floor below JBL speakers & main speakers right to the left Tekton Encores)

Manley Jumbo Shrimp Preamp

Klark Teknik 32 band EQ

All cables (interconnects) recently replaced - Mogami

 

I tried ground lifting the TT motor - no change

unplugged tv & nearby laptop - no change

unplugged all lights nearby - no change

 

I suppose my next troubleshooting venture is to run a ground from phonostage to everywhere & start touching things? Phonostage seems to be the culprit....

😕

 

Thanks everyone!

tommypenngotti

Showing 1 response by atmasphere

atmasphere's avatar
atmasphere
12,138 posts
 

I'll try your suggestions, the only time the hum goes away is when the phonostage is out of the loop 🤷‍♂️

If nothing is connected to the input of the phono preamp, does it still hum? If yes, based on the statement above the problem is the phono section, which might have to be serviced.

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