Woofer Flutter

How do you have the MC option set? Have you played with the settings?
Macs phono stage? I have a few... They have a few options and ways to change things through the years including load plugs. Inline RCAs, Herron, Decware, and a few others make them..

Older ones.. Great filters.. Even a MX110z had great filters.. MM and MC.

Options below make it pretty easy..

https://store.acousticsounds.com/d/60043/DB_Systems-DB_Systems_DBP-6_Phono_Capacitor_Loading_Kit-Any

You would think after keeping the phono stage in most of their units. Mac would leave the rumble filters in place.
I have to look I don't have to use them. Currently.. Things change though.. I though the C2500 had filters, that's pretty new..

Regards

I'm just wondering if I can damage a 20 year old woofer if the flutter persists.

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It sure will if it's pounding the bump stops (I'm sure they have them). It can overheat voice coils.. If they don't have internal bump stops.. Mercy
It might try to jump out of the bore if the return springs were TOO sloppy..

20 years is a while..

Regards