I have been using Altec Lansing 604Cs for 45 years.
When they get honky, it means something is not set up right, or something is failing.
As my entire system has been refurbished (except for the tonearm) from top to bottom within the last two years, the sound is now silky smooth and startlingly lifelike. No 2-3K bump whatsoever.
See the about page:
https://theaudioatticvinylsundays.com

