I have for sale a Rythmik F-15 in Black Oak for Pick-up in Sonoma, CA.
This is the Rythmik Audio F15 Servo Subwoofer in Black Oak with a silver driver cone.
Rating is a 7/10 for some scuff marks on the bottom of the amp and the top.
The Sub was never pushed hard, as I lived in a small apartment and only used it sparingly with movies.
I do not have the original boxing, this is for local pick-up only.
The amp is the A370PEQ3
http://www.rythmikaudio.com/F15.html