Blu Azure Posted November 30, 2008 Share Posted November 30, 2008 (edited) After owning a pair of series one Forte's since 1988, I just decided to replace the midrange horns (K-53-K ) diaphragms with new ones (one had a little corrosion on the windings). These were new diaphragms just purchased from Klipsch. My question: the old diaphragms ones had a yellow spot of paint on the + terminal, easy to spot. The new ones have no mark, line, paint, or any visible way to tell which terminal is + or -. Does anyone have any ideas on how to determine the polarity of a 'blank' diaphragm? They do measure at 11.9 ohms, identical to the stock ones, so Klipsch is at least winding them properly. -Bryan Edited September 9, 2014 by reiver62 Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted November 30, 2008 Share Posted November 30, 2008 The FAT one is the positive terminal. It's a pretty easy swap out and the Klipsch replacment parts are the best way to return your beloved older Klipsch speakers back to their original state. I usually take a piece of masking tape and fold it over and run it around the magnet gap to catch any loose particles before carefully installing the new VC/diapragm. Be very careful not to touch the windings or VC former, they can be fragile. happy listening! Quote Link to comment Share on other sites More sharing options...
Blu Azure Posted November 30, 2008 Author Share Posted November 30, 2008 Thanks, I had a feeling the fat terminal was the + one. The Listening Salon is now opening for the day..... -Bryan Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted November 30, 2008 Share Posted November 30, 2008 Good job mang- you win Speaker Repair merit badge! [Y] Quote Link to comment Share on other sites More sharing options...
Bacek Posted December 12, 2008 Share Posted December 12, 2008 colterphoto1> What are your impressions afrer replacement? Sound is the same or diffrent? Quote Link to comment Share on other sites More sharing options...
colterphoto1 Posted December 12, 2008 Share Posted December 12, 2008 I replaced with OEM part. old one was dead, new one worked. new one sounded better. [:^)] Quote Link to comment Share on other sites More sharing options...
Blu Azure Posted September 8, 2014 Author Share Posted September 8, 2014 (edited) Thought I would reply to my post after 6 years(!) I remember when I replaced my original midranges/tweeter diaphragms with new Klipsch diapgrams it really did clear up the sound...imaging was much clearer with a rock-solid open sound Left-Right. I also upgraded the mylar caps to Dayton 1% PP which have an open neutral tone instead of boutique brightness, North Creek air coil on the tweeter, generic bipolar on the woofer. I left the bass iron core and midrange transformer alone. They now sound way better than my stock Forte 2's which sound aggressive in comparison. BTW, When the Forte I was reviewed by Stereo Review back in its heyday, they said it had one of the flattest frequency responses they had ever measured. I think sticking with the factory diapragms and crossover values makes sense. Edited September 8, 2014 by reiver62 Quote Link to comment Share on other sites More sharing options...
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