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Ground Hum with Rega RP6, Exact and TT PSU.

Greetings.

Just purchased a Rega RP6, Exact, TTPSU and I am getting a HELL of a hum. I am using an Aragon 47K Phone pre amp. I unplugged the wall wart and the cable which goes from the table and it is still there. I seems to get worse when I turn it on and the tonearm gets close to the center of the arm spindle and it picks up a lot of motor noise. Just sold a 28 year old Linn Axis with a Signet Cartridge and never had this issue with just the normal hiss associated as you turn up the volume. It's not noticeable a lower volumes but it is there during quiet passages and it is extremely annoying. The table sounds way better but the noise is very intrusive and honestly I am disappointed after dropping almost $2000. Thanks in advance
pivetta

Showing 1 response by perazzi28

perazzi28's avatar
perazzi28
222 posts
 
Try this if you haven't already:
Use 1 AC wall outlet receptacle for your entire system with the possible exception of your device with the wall wart ac plug. Just use a competent AC Strip.
Next float the ground of your power amp and phono stage (use a cheater plug). The goal is to have your preamp as the only piece with a grounded AC plug. 
Initially you can use a turntable ground wire. Turn everything on and give it a try. If the HUM is still present then unground the turntable and try again. Should work unless as mentioned previously your phono cartridge and TT are angry with each other.
Good luck! 
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