Turntable issue with some vinyl??

Toolfan66
Toolfan66 Posts: 17,243
edited August 2011 in 2 Channel Audio
I have been trying to trouble shoot this all afternoon. The problem is when I play The Cars or Rod Stewart both on new Mofi Vinyl, as I turn up the volume the speakers want to vibrate violently. it does not do this on any other vinyl I have played.

Cables are good, the table is level, I put some isolation pads under the table and it still does it. I'm not getting it??

Why just these two pieces of vinyl??

Help!!!
Post edited by Toolfan66 on
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  • brgman
    brgman Posts: 2,859
    edited August 2011
    I had a similar problem with some LP's and after moving the TT farther away from the speakers,and actually away from everything the problem went away. I added better isolation as well.
    I'm not a vinyl expert so i don't know why it did this on some but not others.
    Main Rig-Realistic AM/FM Record player 8 track boasting 4 WPC

    Backup Rig-2 CH-Rogue Audio Zeus w/Factory Special Dark Mods,Joule-Electra 300ME Platinum Preamp,OPPO-105 w/Modwright Tube Mod, Auralic Aries G2.1,Polk 2.3TL,3.1TL's,Dreadnought,RTA-15TL's,1C's All Fully Modded,2xRTA-12c's ,Benchmark DAC3 HGC,Synology NAS,VPI Scout w/Dynavector DV-20XH and Rogue Audio Ares Phono Preamp,Sony PCM-R500 DAT,HHB-850 Pro CDR,Tascam CC-222SLMKII Cassette/CDR,MIT S3.3 Shotgun Cables,Shunyata Hyra-8,Shunyata and Triode Labs Power Cords

    I’M OFFENDED!!!!
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  • Toolfan66
    Toolfan66 Posts: 17,243
    edited August 2011
    I am wondering if I just mount it to the wall it would go away. If not I could just move the table and phono pre farther away but then I would need some longer interconects for the phono pre..
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  • RuSsMaN
    RuSsMaN Posts: 17,987
    edited August 2011
    The drivers vibrating, pulsing? You probably need a subsonic filter.
    Check your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service.
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  • Toolfan66
    Toolfan66 Posts: 17,243
    edited August 2011
    RuSsMaN wrote: »
    The drivers vibrating, pulsing? You probably need a subsonic filter.

    Thats what it does!! Subsonic fillter??
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  • Toolfan66
    Toolfan66 Posts: 17,243
    edited August 2011
    I was just looking on that site after I googled it. I also found they call them rumble fillters..

    Learn something everyday..
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  • Fongolio
    Fongolio Posts: 3,516
    edited August 2011
    Subsonic filters have been on some amps and receivers since the 50's. All turntables (well almost all) produce subsonic rumble that can be seen on speakers sometimes when even no music is playing just the record groove lead in or lead out or between songs. Some speakers vibrate violently if subsonic rumble is high enough, and yet create little or no volume. Could be on the vinyl the TT or both. The subsonic filter is called several names depending on the manufacturer. On my Eico ST-70 it's simply called lo filter but it cuts all frequencies below 100 Hz which to me is still very audible. My Pro-ject Tube Box II has a low filter that cuts below 12 Hz and the same on my ADC Soundshaper III EQ. I also have a pair of very hard to find Nakamichi in line filters that just plug in the rca's from the table to the amp or pre. The biggest problem with subsonic rumble is that it eats up valuable amplifier power and returns nothing or very little audible musical value. Unless your table and vinyl is completely without rumble a subsonic filter will tighten up the bass and save power for more dynamic passages. Not to mention less strain on speaker cones or panels.
    SDA-1C (full mods)
    Carver TFM-55
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    Rega Planar 3 TT/Shelter 501 MkII
    The Clamp
    Revox A77 Mk IV Dolby reel to reel
    Thorens TD160/Mission 774 arm/Stanton 881S Shibata
    Nakamichi CR7 Cassette Deck
    Rotel RCD-855 with modified tube output stage
    Cambridge Audio DACmagic Plus
    ADC Soundshaper 3 EQ
    Ben's IC's
    Nitty Gritty 1.5FI RCM
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  • george daniel
    george daniel Posts: 12,096
    edited August 2011
    I had the same issue with mine--the drivers would kinda "oscilate" at certain volumes,,and not on all lp's-- I think I fixed it by isolating the tt and moving the phono pre away,IIRC--let us know how it turns out.
    JC approves....he told me so. (F-1 nut)
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  • SCompRacer
    SCompRacer Posts: 8,500
    edited August 2011
    george daniel wrote: »
    I think I fixed it by isolating the tt and moving the phono pre away,,,

    +1 to that. A turntable is a mechanical pickup system. The sensitivity of a turntable to vibration depends upon the room acoustics, the turntables location in the room, and how it is supported. Isolation is great for floor/rack vibrations but the table is still susceptible to airborne vibes.

    My South wall setup has my speakers symmetrical to room corners. With the table/gear between the speakers, SPL levels above 80-85dB would result in awful feedback from the turntable. And that was with a large amount of acoustic treatments (stacked GIK Tri-Traps in corners and three GIK 244 traps behind the gear/speakers). My tube gear required tube dampers. Moving the turntable/gear to the West wall (speakers remain on South wall) solved that problem. No TT feedback and no tube dampers required.

    My West wall setup has the right speaker open to the main level. With the turntable/tube gear positioned between the speakers on the West wall, it is not affected at any volume level.
    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
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  • George Grand
    George Grand Posts: 12,258
    edited August 2011
    I have an unemployed Nakamichi outboard subsonic/rumble filter. Model SF-100 I believe.

    Hi Rich.
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  • SCompRacer
    SCompRacer Posts: 8,500
    edited August 2011
    Hello George!
    Salk SoundScape 8's * Audio Research Reference 3 * Bottlehead Eros Phono * Park's Audio Budgie SUT * Krell KSA-250 * Harmonic Technology Pro 9+ * Signature Series Sonore Music Server w/Deux PS * Roon * Gustard R26 DAC / Singxer SU-6 DDC * Heavy Plinth Lenco L75 Idler Drive * AA MG-1 Linear Air Bearing Arm * AT33PTG/II & Denon 103R * Richard Gray 600S * NHT B-12d subs * GIK Acoustic Treatments * Sennheiser HD650 *
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  • brgman
    brgman Posts: 2,859
    edited August 2011
    Larry did you ever make a move on a filter? I am in the same boat here.i moved mine and it helped quite a bit but would still buy a filter if i know it will fix the problem.
    Main Rig-Realistic AM/FM Record player 8 track boasting 4 WPC

    Backup Rig-2 CH-Rogue Audio Zeus w/Factory Special Dark Mods,Joule-Electra 300ME Platinum Preamp,OPPO-105 w/Modwright Tube Mod, Auralic Aries G2.1,Polk 2.3TL,3.1TL's,Dreadnought,RTA-15TL's,1C's All Fully Modded,2xRTA-12c's ,Benchmark DAC3 HGC,Synology NAS,VPI Scout w/Dynavector DV-20XH and Rogue Audio Ares Phono Preamp,Sony PCM-R500 DAT,HHB-850 Pro CDR,Tascam CC-222SLMKII Cassette/CDR,MIT S3.3 Shotgun Cables,Shunyata Hyra-8,Shunyata and Triode Labs Power Cords

    I’M OFFENDED!!!!
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