Hi there,
Maybe a little too late, but I own a pair of Strathearn ribbons myself. Same problem with the foil which was getting old. I ordered a new (and better) set of foils at the reseller in Germany. at Hifisound in Münster:
Hello Mr. Saerbeck,
Please send me as discussed on the phone today:
2x replacement foil Strathearn PRD à € 49.00
2x transformer 4 - 6 - 8 Ohm à € 79.00
1 shipping charge € 15.00
Hello Mr. Saerbeck,
It is important that I get the right advice on how to fix the Kapton membrane.
Can you provide the correct adhesive?
Please for advice
Sincerely,
Hello Mr. Saerbeck,
Exactly from which plastic is the framework established aufdem the Kapton membrane is to be bonded?
Sincerely,
Hello,
The frame material is polyurethane!
No problem, we've had it repaired several times! They do best thin double-sided tape to use (advantage: stuck fast and secure - disadvantage: the film must fit in one go immediately because subsequent correct is not possible!) On an alternative, you can also use a liquid adhesive that attract even subsequent perfect fit possible! Since the carrier film is Kapton, it is up to 400 degrees and a long-term stable,.
The Kapton film sounds much better in the high frequencies than the old mylar film with a U-shaped aluminum diaphragm. On the Kapton film is twice the length of conductor is housed, since it at the front and the back of the parallel operation operates. The two ports have to be contacted only easy from both sides, so that the impedance is about 1.2 ohms!
The repair is not that difficult, but requires some patience and should proceed with caution.
hifisound
Speakers sales
Raimund Saerbeck
Jüdefelderstraße 35/52
48148 Münster
Tel: 0251-47828
Fax: 0251-43956
Email: r-saerbeck@hifisound.de
web:
www.hifisound.de
