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Message started by msa on 04/10/06 at 15:45:11

Title: Retrofitting the new driver
Post by msa on 04/10/06 at 15:45:11

Can someone describe in detail how to remove the old Fostex driver and how to replace it with the new DFR-8 speaker? Thanks in advance.

Title: Re: Retrofitting the new driver
Post by Rap on 04/10/06 at 16:16:15

Un screw and run a box-cutter blade gently around, between driver frame and baffle to cut the ´goo´ that´s under the driver :)

Title: Re: Retrofitting the new driver
Post by Zygi on 04/10/06 at 16:59:26

MSA,

 Like Rap said, except use a credit card on the wood and 1" wide chisel. Chisel flat side up wiggle it under the frame and gently push down on the handle which should pry the driver up. Once the UK-UM putty releases you can lift the driver out.  I find it easier to un-solder at the binding posts and pull wire and all through the hole.

 Pretty easy...
   BobZ

Title: Re: Retrofitting the new driver
Post by msa on 04/10/06 at 17:55:23

Thanks, guys. But more fundamentally, how does one get to the driver's edges after unscrewing the four screws? Is it done just thru the hole in which the driver sits?

Title: Re: Retrofitting the new driver
Post by gnat leader on 04/10/06 at 19:41:48

Not sure what you mean.  The edges of the Fostex driver?  Removing the fostex driver was already described above.
What edge of the driver are you trying to access that you cannot once the driver is completely removed?

Title: Re: Retrofitting the new driver
Post by msa on 04/26/06 at 16:14:04

Does one have to apply more "goop" or other sticky stuff when replacing the driver?
Thanks.

Title: Re: Retrofitting the new driver
Post by Zygi on 04/26/06 at 16:29:07

MSA,

  YES!!!

 BobZ

Title: Re: Retrofitting the new driver
Post by msa on 04/26/06 at 18:34:23

What is the "goop" and where does one get it?

Title: Re: Retrofitting the new driver
Post by gnat leader on 04/26/06 at 19:14:04

You can get it from www.partsexpress.com among other places.

http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=269-300&CFID=58975&CFTOKEN=53200437

The non-hardening type of window "rope caulk" will work OK too. From Home Depot or other hardware store.

Title: Re: Retrofitting the new driver
Post by Zygi on 04/27/06 at 01:36:17

Also, both auto parts and auto body supply houses carry the rope caulk. They call it strip caulk. 3M and Norton make it. You get 60 yards for $10-$12 and is sold in 1 foot lengths.  Norton is better than the 3M by a long shot!!!  Both are better than the rope caulk sold at the Home Depot type stores... Like  Brad said, its OK...

    BobZ

Title: Re: Retrofitting the new driver
Post by johnnycopy on 04/27/06 at 04:11:16

Bob,

Please explain differences between home depot rope caulk and others you've mentioned. I just purchased the home depot one, but will wait your advice.

Thanks John

Title: Re: Retrofitting the new driver
Post by Zygi on 04/27/06 at 04:35:58

John,

  The Home Depot rope caulk is more of a clay based caulk were the 3M/Norton is petroleum based product. I has a greater mecanical bond to the surface its applied to than the clay based product.  If you've ever gotten any of the strip caulk on your carpets you'll know what I mean...ask my wife!!  

 Being petroleum based it also has more of an elastic property to it, which I've found does damp the frames better then the clay based product. I used the clay based stuff for years till Steve showed me the stip caulk. I haven't used the rope caulk since.

BobZ


Title: Re: Retrofitting the new driver
Post by Zygi on 04/27/06 at 04:47:12

Also, when you apply the caulk to the driver, make sure you apply it around the sealing surface (were the gasket would go) as well as out around the hollow areas at the very outer edge of the frame. I also put a cirlce of it around the depressions at the four screw holes. When you use the strip caulk tighten the driver down and back off all four screw till you can get a .0010 feeler gauge under the very outside edge of the screw flange.

BobZ

Title: Re: Retrofitting the new driver
Post by johnnycopy on 04/27/06 at 06:28:40

Thanks Bob


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