Hooked up the speakers to my music man and same low volume.
Sounds like you got your answer. Your voice coils are most likely partially melted, they overheated and melted the insulation on the wire shorting some of the winding together. Sounds like you got an analog meter, does it have a needle on it. An 8 ohm speaker will only read around 6 ohms or so. That can be hard to read on this kind of meter if your not familiar with using one and if its not zeroed correctly. Its probably bouncing around because your not making a good connection on the speaker terminals, could be a little corrosion on them.
Also, when reading resistance of speaker voice coils, it is important to remember that speakers can also act like microphones. Move the cones and small voltages are generated. This can confuse a meter. Always set a speaker down so it isn;t moving before making a reading. And turn off any relatively loud sounds in the vicinity.
Education is what you're left with after you have forgotten what you have learned.
That sounds logical since I've read that Skynard replaced the scorpions with JBL's since they couldn't handle the loud volumes these amps produce. I guess I'll replace them with black widows and hopefully this think will be done.
Well, an ohmmeter can really only tell you if the voice coil is open (broken wire) or not. A radical difference between the ohmage - with one much lower than the other - would suggest that the lower one may be shorted.
You did have the amp off and speakers unplugged at the time, right?
Your experience driving them with the MM amp says they are probably toast - you tried them one at at a time?
From Enzo's picture, it looks like you can replace the basket/cone/coil assembly and keep your existing magnets if you want to go that way.
Comment