Here's a test, with the turntable off, not rotating, place the cartridge on a record. Slowly advance the volume to the level that you commonly listen at. If howling begins, back off. You have found out that you have a problem with acoustic feedback and if it is structure borne, you will have to change the structure on which the table sits. If it is air borne, you will have to site the turntable somewhere else.
This is usually only a problem with vented woofers, which are unloaded below their primary resonance. Acoustic suspension woofers remain loaded and will not show this kind of response problem.
This is usually only a problem with vented woofers, which are unloaded below their primary resonance. Acoustic suspension woofers remain loaded and will not show this kind of response problem.