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!

128x128tommypenngotti
davidrolon's avatar
davidrolon
39 posts
 

Had a similar problem. Turns out it was the wifi router. Moved it and hum disappeared. Sometimes it's the simplest things hiding in plain sight.

defendert's avatar
defendert
21 posts
 

I also had that problem with using Cyrus gear. The power inlet fitting on them only had a live and neutral and no earth. So when i changed  my amp to parasound that had an earth on the power supply fitting, the hum went away. So check the power inlets. 

big_greg
6,623 posts
 

Had a similar problem. Turns out it was the wifi router. Moved it and hum disappeared. Sometimes it's the simplest things hiding in plain sight.

I have a turntable in my computer room and had a weird kind of pulsing noise even with nothing playing.  It was the nearby wi-fi router.

browndt
97 posts
 

Had the same problem with a VPI Prime Signature and a Van den Hul

cartridge. I switched to Silnote highly shielded cables. Problem solved.

Believe me I tried everything list here without success.  VPI tone arms 

are known for hum problems. Top quality shielded and directional cables are a must.

tommypenngotti's avatar
tommypenngotti OP
219 posts
 

@browndt thanks for the tip , I tried some high end Mogami's on the TT to Phono stage , didn't do anything ...🤷🏻‍♂️

More to discover