Anything that moves your stylus/cantilever will translate to speaker movement. That's always been a factor with turntable/cartridge systems. If you can find a record clamp or weight that will take out some of the warp, it will help. Hopefully you're not using any kind of bass boost or "loudness" control in your listening. If the speakers don't exceed their linear range, or bottom out: there shouldn't be any damage to the system. With regard to your tonearm/cartridge resonance: 8hz is above record warp freq., and below audibility(close to the lower end of ideal). For more insight: (http://www.gcaudio.com/resources/howtos/tonearmcartridge.html) If your house is of frame construction: mounting a turntable platform to the wall is not a great idea.
Speakers "pumping" with record warps - normal?
I just set up my Technics SL-3200 with an AT440MLa cartridge, Sumiko headshell, and Herbies mat. The table is properly isolated on a Target shelf that is mounted to wall studs. Using the Hi-Fi News test record, I determined that the resonant fequencies of the tone arm are approximate 8Hz (vertical) and 7Hz (lateral).
I've noticed that on warped records, the speaker cones do a lot of low-frequency pumping (visible movement in and out). I'm afraid that I could damage the drivers if I turn up the volume. Is this a normal consequence of warped records, or do I have a resonance problem with my TT?
Thanks,
Mika
I've noticed that on warped records, the speaker cones do a lot of low-frequency pumping (visible movement in and out). I'm afraid that I could damage the drivers if I turn up the volume. Is this a normal consequence of warped records, or do I have a resonance problem with my TT?
Thanks,
Mika