I have moved my speakers and sub (crossed at 49Hz) to the adjacent wall - this has helped. My sub is now approx 15' from TT and furthest speaker cable is 20' from amp. I made some temp cables using 14/4 in-wall cable to try the relocation prior to outlay of a pair of 20' speaker cables. without the REL engaged I can now pump the volume up with no feedback (one of my Sf Cremona Auditor Ms is 5' from TT); once I engage the REL I need to adjust the gain to keep from getting some feedback at louder volumes. So, this does enforce the thought the problem was acoustic and not mechanical. No shared beams between TT rack and REL now. Next, I may try putting the REL on a 3" maple base. Jim Pendleton with Osage Audio has been very helpful and spent many hours helping me tame this wild dog. I will also replace the OEM inserts on my TT feet with the Symposium inserts. Thank you everyone for your suggestions.
Feedback through turntable
My system consists of a McIntosh C2300 preamp, MC452 amp, MCD500 SACD player, VPI Aries 3D with Ortofon Cadenza MC cartridge, Manley ChinookSE phono stage, PS Audio P5, Sonus faber Cremona Auditor M speakers and REL B1 Sub bass system. My issue is with turntable use only; SACD has no issues. On my pre when volume is +55 (peak at 45watts) I start to get feedback through the turntable - a sort of low freq sound, back off volume and it goes away. My Auditor M speaker is about 3 ft away and in front of turntable. I do have a rumble filter (KAB) installed between preamp and phonostage to help with sub woofer pumping. Due to room layout I cannot rearrange the setup/move turntable. My turntable is on a 2.5" block of wood and that sits on 4 isolation blocks via spiked feet. Any thoughts how I can eliminate this problem? Harry Weisfeld with VPI states he has 4 15" woofers (JBL Everest) near his Prime Signature setup with no issues at all. Why am I having this problem and how can I eliminate it? Thank you in advance for all feedback.
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- 105 posts total
- 105 posts total