• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Infinity - RS-625 restoration

4

4ey

Active Member
On which Infinity model were used the Polycell tweeter 902-6412 ?
I'm trying to fix some RS-625 that I have bought unfortunately through Mercari. ( I wasn't at home for few days, when it arrived and thus they did not accept my complaint about the speakers being just thrown in a box and shipped across the country without ANY protection. The butcher who did this to them thus got away, as did Mercari - never buy from them, damn scammers - and I was left with picking up the pieces)
Now at some stage of the process, I came across those 902-6412 visibly with bigger magnets, tweeters and was wondering if it's worth repleacing the original 902-6328 (as far as I know) with them and from which model they originally come. Have not being able to find any info on it.
I'll appreciate any info or input, as always!
Many thanks!
 
Register to hide this ad
If you're talking about this (pic below), the second magnet is called a "bucking magnet" and it prevents stray magnetic fields from affecting CRTs. It doesn't affect the performance of the tweeter in any way. It may have been used in the RS video center speaker. If the tweeter appears to be otherwise identical to a different Polycell tweeter without the second magnet, it probably is.

1691671336074.png
 
swechsler said:
It may have been used in the RS video center speaker
Click to expand...
You are correct. A quick scan of the Technical Sheet shows the same 1" ferrofluid cooled polycell tweeter. The RS-Video was produced in the same time frame as the RS-x25 series.
 
  • Like
Reactions: 4ey
swechsler said:
If you're talking about this (pic below), the second magnet is called a "bucking magnet" and it prevents stray magnetic fields from affecting CRTs. It doesn't affect the performance of the tweeter in any way. It may have been used in the RS video center speaker. If the tweeter appears to be otherwise identical to a different Polycell tweeter without the second magnet, it probably is.

View attachment 2954975
Click to expand...
Wow, this was a great catch! Thank you, it is much appreciated. It's all new to me doing more than refoaming. And I have several pairs that are worth taking on, even to only, inevitably pass to other people to enjoy. Namely KEF Model 101 and a pair of Polk RT10. A new crossover for one of the Polks and probably for the KEF too. I'm not sure whatever Falcon still has for that model KEF is what I need (and do I need the 'Stop' system? Also why not get it, if originally is there?... just wondering ) The drivers and cabinets are fine. No luck for such crosovers for the both models - the KEF AND the Polk.
Got lucky though and at least found one for the RS-625, which I desperately needed.
Anyway, thanks for your help! I'll post again when I have development on the projects. Next stop, rockwool for the Infinity. I did the first speaker and I was surprised I could tell the difference without even trying. The one with the new rockwool sounds evidently even better! :)
 
You must log in or register to reply here.
Back
Top Bottom