Anyone have this turntable issue?

Does the pop still occur if the mute function of the SP3 is engaged prior to and at the time the stylus hits the record?

Also, by any chance do any of the components in the system, such as a powered subwoofer, have a signal-sensitive auto-standby feature?

Finally, and this is just a hunch, if you are still using the Plinius Odeon amplifier you mentioned in a post a few months ago you might try changing the setting of its ground-lift switch to the opposite of what it is currently set to. It would be prudent, though, to turn the amp off and wait about 30 to 60 seconds before changing that setting.

Regards,
-- Al

Disconnect the turntable ground and see if it happens. Next try a different cartridge. Very Weird. It has to be sending a signal through the ground assume your volume is all they way down when it is all the way down. Is there any signal at all with the volume all the way down. If there is just a little it is the cartridge.  

@almarg

Did you look through the owner manual of the SME V arm? Check out "515 Audio Lead" found on page 12.
https://sme.co.uk/audio/wp-content/uploads/sites/1/2016/12/SME-series-v-instructions.pdf

I assume the OP connected the single ground from the arm 5 pin din connector cable to the ground lug on each phono amp.
I assume there is no other grounding connections from the arm. Only the connection from the arm to the two phono preamp’s ground lug.

Sutherland DUO Phono amp
http://www.audiophilia.com/reviews/2018/1/25/sutherland-engineering-duo-phono-stage

The units came with a few hours on them with loading/gain set at 47/40, the default, which worked well for my Phasemation PP-2000 MC Phono Cartridge. Loading/Gain adjustment is easy and accessed by unscrewing the top plates. Don’t forget to set loading and gain values the same on each chassis.

Is it possible the OP has the gain set too high on the phono preamps?


If we are to assume the problem is not caused from static electricity then it must be signal voltage generated from the stylus hitting, contacting, the groove of the record.
Is the loud POP heard through both the left and right speakers? That might be good to know.

Is it possible the POP voltage gain is large enough it is over driving the Line input circuitry of the Bryston SP3 preamp?

http://www.bryston.com/products/digital_audio/SP3.html
I assume the volume control on the Bryston preamp is not a motorized pot. Some how the high gain voltage POP is getting past the volume control circuitry and getting to the power amp’s inputs.

Jim

jea48: How do explain the OP said the volume control is turned all the way down? How is the POP signal voltage getting through the all the way turned down volume control?

Funny you don't ask the static charge people the same question. Oh well. 

Jim (Jea48), thanks for providing the links.  Not sure if you noticed that the OP is using a step-up transformer between the turntable and the dual chassis Sutherland phono stage, with the phono stage presumably being used in moving magnet mode.  Here is the manual for the step-up:

https://www.ortofon.com/media/148266/ortofon-st-7-userguide01_web01.pdf

It shows that a single ground wire should connect the turntable to the ground terminal on the SUT, and another ground wire should be connected from that terminal to the phono stage.  Which in this case would mean that a single wire should be used to connect that terminal of the SUT to the ground terminals of both phono stage chassis.

Before commenting further I'll await the OP's response to the questions that have been raised since his last post, as well as confirmation of how the ground connections are implemented between the turntable, SUT, and phono stage.

Best regards,

-- Al