Pro Audio Asylum

RE: Servo Drive Basstech 7 Repair thread!

64.229.8.104

ghaleon

In Reply to: RE: Servo Drive Basstech 7 Repair thread! posted by Bubba on June 05, 2008 at 15:17:42

Thanks for the info! I've included some pictures of the information plate attached to the motor.

This subwoofer has much more than a grumbling sound, it sounds like a kind of electronic distortion almost. There's a faint static sound, in addition to a pretty invasive distortion along with the bass.

http://i111.photobucket.com/albums/n148/ghal3on/Basstech%207/May8th08044.jpg

http://i111.photobucket.com/albums/n148/ghal3on/Basstech%207/May8th08043.jpg

Follow Ups:

RE: Servo Drive Basstech 7 Repair thread! - servojohn 12:37:28 06/06/08 (0)
This is the "original" Pac Sci motor. One other issue finding a surplus unit is making sure it has the 1" vent tube-many do not.

You can remove brushes and inspect them, two adjacent ones is the standard procedure(they are duplicates 180 degrees apart). Also, you may be able to inspect the commutator through the vent tube while it sits there still attached to the module and shaft assembly. It should look smooth, no pitting or chunks missing, with nice thin black lines between segments. You still need to remove the shaft assemble from the motor to really get a feel for the condition of the bearings, and ease of spinning(should be "like butter".

Best regards,

John

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