Team-BHP - View Single Post - Rockford Fosgate P312D4 magnet in basket moving.

DerAlte · 28th April 2008, 18:52

Aiyaiyo! That doesn't augur well at all!

The main problem of repairing in such situations is getting the voice coil to be centered correctly with the magnet. The annular space in which the voice coil moves up and down is only a few mm wide, and if the VC is not in the center, the coil will rub against the magnet, lose its insulation and ultimately short out.

Now, assuming that the assembly method was fairly simple, and the design was robust and fool-proof enough for manufacturing, you have 2 possibilities:

1. As you have suggested, stick the magnet down. Not with silicone - but with cyano-acrylate glue, like FeviQuik or such. From the look of it in the pics, this looks like a difficult proposition, since the frame kind of shrouds the magnet. The problem is if the glue seeps anywhere else, you will have a totally unusable subwoofer!

2. Take it to the local RF main dealer / distributor, and see if they can help getting it repaired. It would help if you write directly to RF about the problem - maybe they can suggest the best course of action

28th April 2008, 18:52	#4 (permalink)
DerAlte Team-BHP Moderator Join Date: Mar 2007 Location: Bangalore Posts: 1,713	Aiyaiyo! That doesn't augur well at all! The main problem of repairing in such situations is getting the voice coil to be centered correctly with the magnet. The annular space in which the voice coil moves up and down is only a few mm wide, and if the VC is not in the center, the coil will rub against the magnet, lose its insulation and ultimately short out. Now, assuming that the assembly method was fairly simple, and the design was robust and fool-proof enough for manufacturing, you have 2 possibilities: 1. As you have suggested, stick the magnet down. Not with silicone - but with cyano-acrylate glue, like FeviQuik or such. From the look of it in the pics, this looks like a difficult proposition, since the frame kind of shrouds the magnet. The problem is if the glue seeps anywhere else, you will have a totally unusable subwoofer! 2. Take it to the local RF main dealer / distributor, and see if they can help getting it repaired. It would help if you write directly to RF about the problem - maybe they can suggest the best course of action __________________ Never believe it cannot be done - it's only that you haven't found out how!!!