I have had a slight hum/buzz in my right channel speaker for some time now when playing my turntable, and I am really wanting to get it sorted. I just bought and set up a fisher 500c to replace a cheap harmon kardon stereo reciever, and the hum has been present in both receivers when using my TT.
With the fisher, when I use the integrated phono preamp, the hum mostly goes away, but there is a much quieter hum in both speakers. I had been using a parasound z-phono preamp with my harmon kardon and was planning to do the same with the fisher. But if I run through the parasound into the aux input of the amp, the bad right channel hum persists. The hum is not present if I hook another source into the aux input (CD player, 1/8" input to ipod). So I think there is a ground loop issue with the parasound or with my TT.
I think the RCA cables I have been using are too long, so I am going to grab some shorter ones. My Turntable is a Pro-ject Debut III with an Ortofon 2M Red cart. Is there a shielding issue with this TT and cart combo? I also have the pro-ject speed box. I have tried different wall outlets as well, but still thinking it could be a problem with power since I didn't have the hum in my old house.
Just wondering if anyone had any suggestions. I am fairly certain it isn't the fisher amp since the hum mostly is gone once I remove the parasound preamp from the system and when using other devices in the aux input. I may just have to use the preamp in the fisher, and it has been recapped, so that is good.
With the fisher, when I use the integrated phono preamp, the hum mostly goes away, but there is a much quieter hum in both speakers. I had been using a parasound z-phono preamp with my harmon kardon and was planning to do the same with the fisher. But if I run through the parasound into the aux input of the amp, the bad right channel hum persists. The hum is not present if I hook another source into the aux input (CD player, 1/8" input to ipod). So I think there is a ground loop issue with the parasound or with my TT.
I think the RCA cables I have been using are too long, so I am going to grab some shorter ones. My Turntable is a Pro-ject Debut III with an Ortofon 2M Red cart. Is there a shielding issue with this TT and cart combo? I also have the pro-ject speed box. I have tried different wall outlets as well, but still thinking it could be a problem with power since I didn't have the hum in my old house.
Just wondering if anyone had any suggestions. I am fairly certain it isn't the fisher amp since the hum mostly is gone once I remove the parasound preamp from the system and when using other devices in the aux input. I may just have to use the preamp in the fisher, and it has been recapped, so that is good.
