This is the email I received from OAudio:
"The failure symptoms that you describe are usually experienced by folks who mis-wire a dual-voice coil driver; or, very very rarely, have a single-voice coil driver that the vendor claims is "4 ohms" when it actually is significantly lower.
I took a look at the owner's manual for the driver you are using -
http://manuals.harman.com/INF/CAR/Owner's Manual/Perfect VQ OM FINAL (Revised 12-2-02).pdf - provided that your driver is in good condition, everything should be ok regarding the load that is being presented to the driver. Your driver is SVC and Re is 3.42ohms which shouldn't be a problem for the amplifier.
As a sanity check, could you measure the DC resistance of the voice coil? I want to rule out the driver as a possible cause for failure before sending a warranty replacement; also, want to make sure that a replacement amp will solve the problem.
Thanks!
Eric Oiesen
O Audio"
Can you help me decipher this..
I know this is not a dual voice, 1. it is labeled as 12vq and 2. This only 2 wire hookups on speaker, doesn't dual voice coil have 4?
How do I measure the dc resistance of the voice coil?
Should I go to radio shack and see if I can find the exact size of fuse and just try to replace it again or would you consider this amp faulty for the fuse blowing overnight when it was not in use in the first place?
Thanks..