Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Jacques Carrier
 
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Default Koss Pro-4 AA earphones ( ear cushion removal)

Hi fellow techs,

I want to replace the ear cushions on these fine earphones.
Please tell me how to remove them correctly because I do not want
to damage them.They seem to be glued in place.Maybe there is a metal ring??

Many thanks,

Jacques Carrier
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jakdedert
 
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Jacques Carrier wrote:
Hi fellow techs,

I want to replace the ear cushions on these fine earphones.
Please tell me how to remove them correctly because I do not want
to damage them.They seem to be glued in place.Maybe there is a metal
ring??

They've probably glued themselves into place over the years. IIRC, they are
simply stretched over the earpiece, and the edge shrinks itself into a
groove around the circumfrence. I know I pulled mine off many times.

Where did you find new ear cushions for them? I thought they were only
available by sending in the entire unit to Koss for refurb. I'll have to
Google out Koss one of these days. I've got a set of AAA's which need new
pads. The ones on these are definitely glued into place...air-filled as
opposed to the fluid-filled ones on the AA's (more comfortable/lighter--but
considerably more fragile).

jak

Many thanks,

Jacques Carrier



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jakdedert
 
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jakdedert wrote:
Jacques Carrier wrote:
Hi fellow techs,

I want to replace the ear cushions on these fine earphones.
Please tell me how to remove them correctly because I do not want
to damage them.They seem to be glued in place.Maybe there is a metal
ring??

They've probably glued themselves into place over the years. IIRC,
they are simply stretched over the earpiece, and the edge shrinks
itself into a groove around the circumfrence. I know I pulled mine
off many times.

Where did you find new ear cushions for them? I thought they were
only available by sending in the entire unit to Koss for refurb.
I'll have to Google out Koss one of these days. I've got a set of
AAA's which need new pads. The ones on these are definitely glued
into place...air-filled as opposed to the fluid-filled ones on the
AA's (more comfortable/lighter--but considerably more fragile).

I went to the Koss site. They do indeed sell cushions for many of their
cans...not the AAA's however. I pulled mine off to see if I could refurb
them. I found a leak in one side, which I might be able to plug. The other
side will take a bit of sleuthing (immerse in water, then squeeze?). There
is no easily located hole, but they eventually go flat when compressed.

I've tried to locate a modern Koss headset which could be adapted to fit.
The cushions are simply glued to the can. Something in their line (all
cushions are $5/pair) must be close, although the Pro-4AAA earpieces are
unusually large.

Too bad they are not covered by the lifetime warrantee of the newer models.
In fact, I don't think they support them at all anymore. I'm waiting for a
reply to my email; but further research on the web indicates that they've
disowned this model....a shame, they sound very good.....

jak

jak
jak

Many thanks,

Jacques Carrier



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