Hi,

I have a pair of Infinity RS625 speakers which the original foam had
cracked on the woofers. I bought a pair of rubber surround and about
to attempt to replace the foam surround.

I noticed the original foam surround is glue underneath the cone.
Since gluing the new surround to the cone seems to be easier to the
top of the cone instead underneath the cone.

My question is: Is it okay to glue the new rubber surround on the top
of the cone instead underneath the cone? Does it matter which sides?

Thank you in advance.

Jack

"Jack" jack_z28NOSPAM.yahoo.com@ wrote in message
...

Hi,

I have a pair of Infinity RS625 speakers which the original foam had
cracked on the woofers. I bought a pair of rubber surround and about
to attempt to replace the foam surround.

I noticed the original foam surround is glue underneath the cone.
Since gluing the new surround to the cone seems to be easier to the
top of the cone instead underneath the cone.

My question is: Is it okay to glue the new rubber surround on the top
of the cone instead underneath the cone? Does it matter which sides?

Thank you in advance.

Jack


See refoaming Infinity woofers at http://www.top-audio.de/infinity_classics/

Mike

Thanks, but that web site didn't post instruction on how to refoam the
speakers. That web site advertised their business to refoam speakers
for a fee.


On Tue, 18 Jan 2005 16:43:11 -0000, "Mike Gilmour"
wrote:


"Jack" jack_z28NOSPAM.yahoo.com@ wrote in message
.. .

Hi,

I have a pair of Infinity RS625 speakers which the original foam had
cracked on the woofers. I bought a pair of rubber surround and about
to attempt to replace the foam surround.

I noticed the original foam surround is glue underneath the cone.
Since gluing the new surround to the cone seems to be easier to the
top of the cone instead underneath the cone.

My question is: Is it okay to glue the new rubber surround on the top
of the cone instead underneath the cone? Does it matter which sides?

Thank you in advance.

Jack


See refoaming Infinity woofers at http://www.top-audio.de/infinity_classics/

Mike

What's important is that the voice coil remain
centered in the gap. If the new surround pushes
the cone in further than normal at rest, the coil-
gap geometry will be upset and distortion will
result. Assuming you can get a decent glue bond
without changing the cone position it should work.
Is the rubber designed to be glued to the front ?

rd

How can I tell if the rubber designed to be glued to the front?

Thanks

Jack




On 25 Jan 2005 18:24:03 -0800, "RD Jones" wrote:

What's important is that the voice coil remain
centered in the gap. If the new surround pushes
the cone in further than normal at rest, the coil-
gap geometry will be upset and distortion will
result. Assuming you can get a decent glue bond
without changing the cone position it should work.
Is the rubber designed to be glued to the front ?

rd

Jack wrote:
How can I tell if the rubber designed to be glued to the front?

Thanks

Jack

It has to do with the "at rest" position of the outer
edge of the cone in relation to the frame flange that
the surround gets glued to (underneath the gasket).
The as-molded natural shape of the surround should
be retained when it is glued in place, not stretched
or pulled out of shape to conform to the surface it
gets glued to.
Generally speaking the rubber surrounds are far
superior to the foam in terms of longevity:
I have a pair of Grafyx SP's that get used daily
with the original 30 year old rubber.

Good Luck
RD