I take it you are referring to the 5" mid in the 44s.
You could have a look at my recommendation here. It often works'
http://theartofsound.net/forum/showt...222#post742222
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I take it you are referring to the 5" mid in the 44s.
You could have a look at my recommendation here. It often works'
http://theartofsound.net/forum/showt...222#post742222
Look no further: http://theartofsound.net/forum/showt...F2000-MF500-D5Quote:
Originally Posted by madders
PM me if you're interested.
Yes the 5" mid - I've attached a couple of pics. I want to try your suggestion with the hair dryer but I can't figure out how to get to the voice coil. I took the three screws out the back, but I can't see how to take it apart without cutting the front.Quote:
Originally Posted by walpurgis
Attachment 16620 Attachment 16621
Also it appears to be rubbing on every side, so maybe it's just totally knackered?
Great thanks! I spent ages looking on eBay earlier! The ones you have for sale look exactly like what I have. If I can't fix it with the hair dryer, I'll PM you. Thanks!Quote:
Originally Posted by DarrenHW
has this driver always done this or has it happened after you did the recap?
My god. What have you done? Put the screws back and do them up tight and just pray the magnet has not decentralised.Quote:
Originally Posted by madders
You don't need access to the coil. You just put an elastic band around the coil former which is the tube attached to the back of the cone. Access is through the chassis openings behind the cone.
The rear spider is the corrugated bit behind the cone.
Wow it worked! Despite removing the screws (luckily they went back in ok). And I completely misunderstood your instructions. First I pulled it up and heated it, and it wouldn't go back down. Then when I finally realised what you meant with the elastic band, I was pulling it way too tight. Eventually I realised it only needed pulling very slightly. It's still rubbing a little bit, but there is a huge improvement, and no distortion anymore. I'll have another go tomorrow and see if I can get it perfect. I'm amazed I haven't broken it completely!Quote:
Originally Posted by walpurgis
I think it must have been the same before the recap. Something didn't sound right, and this must have been the problem. It's very noticeable on piano music, which I didn't listen to before. But I put some on after the recap because I thought it would be good to test the crossover.Quote:
Originally Posted by jamie123
That's a relief. Find exactly where the coil is rubbing by pressing gently on the coil former all round and moving the cone backwards and forwards a bit until you get the worst contact noise. The elastic band needs to pull exactly in the opposite direction that you are pressing, but not too strongly. Don't overdo the heat either. Just take everything steadily and do it again if not happy. This dodge will normally work, unless the coil is damaged. Either by overheating from too much power causing the coil coating lacquer to bubble and expand or ovality due to ageing or poor manufacture (and yes, I've seen both).
Sounds like your getting there Michael :). Are you aware that periodically rotating the bass driver is recommended to compensate for the surrounds sagging under weight possibly causing rubbing of the voice coil?
Hi Darren - yes I've read that a few times, but I didn't look which way round they were before I took them out! I have put them back with the wires at the top, I think it's most likely they were at the bottom before.Quote:
Originally Posted by DarrenHW