Woofer motion problem.

This happened to me on a few albums I transfered over to cdR. As someone else stated, you do need a plateamp with a rumble filter. As far as damage goes, I would think this excessive repetitive movement can't be a good thing. Call one of the subwoofer manufactures and ask them.

Macd...It is unlikely to harm the speaker, but it does have a bad effect on the sound. Get a rumble filter.

For what it's worth, it is as much a part of the speaker design as it is the warp wow from your records. A vented speaker is undamped below its resonant frequency, hence the uncontrolled motion. I agree with El, it is unlikely to harm the speaker, but being low freqency in nature, it still eats up a lot of amp power and the whole situation seem quite undesireable.

The rumble filter is one solution, but you don't list your phono stage on your system page. Some phono stages have built in high pass filters or switchable high pass filters.

Viridian-- The turntable that I demoed on my system was not mine, I have not yet started to build my analog rig. At the time I had a Classe integrade that had a built in phono stage. I thought it might have been the amp, but when I play flac files that are recordings of Lps, I noticed that it did the same thing.

what are some phono stages with high pass filters?

Totem 1's are ported at 42 Hz. It looks like an underdamped high Q design. Whilst lota of semblance of deep bass is nice to have this means they are uncontrolled at 20 Hz and below (no acoustic damping at all). Large excursions can damage the woofers so do be careful. FWIW Most small ported monitors with big sound for a small box will tend to exhibit this lack of control.