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Kenwood KR 6050 causing my turntable rumble issues?

A

Aaron S

Member
Hi all. I normally run a Kenwood KR 6050 with an Elac 10H turntable. Previously I was running a Pioneer PL115D with the Kenny. I've always battled with feedback and rumble issues, and tried a number of various isolation methods, all to no avail. I had chalked this problem up to my rental house and its cheap, wham bam 1970s or 80s 2x4 framing, and our living room being up on the second floor. This issue has lead to my KG4 woofers "pumping" like crazy, especially when volume is up. They do/did this with both turntables. The Elac is slightly reduces this some, but now instead of the hollow, wooshing sound the Pioneer used to make when the stylus hit the record, I get that nice, loud idler wheel rumble.

Today, I picked up a Marantz twenty two for a cheap, got it home and cleaned up, and set it up on top of my Kennwood receiver to hook it up to my system for a test drive. Oddly, this has solved my rumble issue. I'm baffled...could it be possible that my receiver requires isolation? Have I essentially isolated the Marantz by putting it on top of my Kenny? Nothing else in my setup placement wise has changed. Could there be something wrong with the phono stage of the Kenny that is causing this rumble?

I'm pumped not to have to listen to my Elac howling like a banshee when I listen to records, but long term I prefer the Kenwood to the Marantz. I'll try switching the placement of the receivers tomorrow to see if that solves it. Just thought someone might chime in here if they could think of anything that may be wrong with the Kenwood that would cause this to happen.
 
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Close proximity of speakers to the turntable and the structure it is sitting on are the most important issues to consider with your problem. I am going to guess that your receivers and turntable are all on the same piece of furniture. What may have happened is the added Marantz added enough weight to the table that is keeping it from vibrating as much. This would stabilize your turntable's vibration just enough to stop the feedback.
 
KingBubba said:
Close proximity of speakers to the turntable and the structure it is sitting on are the most important issues to consider with your problem. I am going to guess that your receivers and turntable are all on the same piece of furniture. What may have happened is the added Marantz added enough weight to the table that is keeping it to vibrate less. This would stabilize your turntable's vibration just enough to stop the feedback.
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Hmm...interesting thought with the added weight reducing vibration. Maybe I should leave the Marantz on top, and reconnect the Kenwood and see if that has done it. Not long term of course, but just to give it a test listen.

The receiver and turntable are on the same piece of furniture.
 
The subsonic filter would also do this as Aaron S has mentioned. Is it possible that that was selected on the Marantz and you were not aware of it?
 
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KingBubba said:
The subsonic filter would also do this as Aaron S has mentioned. Is it possible that that was selected on the Marantz and you were not aware of it?
Click to expand...
I do have the Low Filter button turned on on the Marantz. I was thinking that was it’s equivalent to the subsonic filter. Not sure tho…do you know if it is?
 
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