• 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

Questions on recapping Sansui speakers SP-2000 and Sp-2500

DatGtrPlaR

DatGtrPlaR

Amuse your Muse
I have a pair of Sansui SP-2000 and 2500’s that I want to recap. The capacitors are bipolar axial on the 2000

CA919A94-FE81-47A3-85C0-EC0A4B68D65B.jpeg
and nonpolar axial on the 2500

DB149A31-6062-4046-8B14-64D7081F9DC8.jpeg
would polarized axial caps of the same value work or no? what would be a good replacement for these?
 
Register to hide this ad
Keep in mind if you need a non-standard value, capacitors wired in parallel add in value, say need an 8.0 can use a pair of 4.0 or a 3.3 and 4.7 wired in parallel.
 
I recapped both the Sansui SP-200 and the SP-2500 with Film capacitors. Big improvement over the bi polar electrolytics. The film caps have a much tighter tolerance, which makes for better imaging . I did need to parallel several to get the correct values. Also be sure to clean all the contacts on the level controls.
 
I believe Digikey has most of these values in stock if you wish to use film caps as @billyz has done.
I quickly checked the site for .47, 2.2, 3.3, and 4.7.
 
Aud10file said:
I believe Digikey has most of these values in stock if you wish to use film caps as @billyz has done.
I quickly checked the site for .47, 2.2, 3.3, and 4.7.
Click to expand...
. I looked at Digikey and had trouble finding exact replacements. looks like they are asking for quotes for bulk purchase or they are obsolete.
What do ya do for the 8uf 25v?
 
Last edited:
I've recapped 8 of the SP-2000s now and the aforementioned Daytons from Parts Express are what I've used.

For 8uF I used two 4uF in parallel. It was kind of a tight fit for such a beast in the somewhat limited space of the crossover, but it worked out.
 
archibael said:
I've recapped 8 of the SP-2000s now and the aforementioned Daytons from Parts Express are what I've used.

For 8uF I used two 4uF in parallel. It was kind of a tight fit for such a beast in the somewhat limited space of the crossover, but it worked out.
Click to expand...
Do you have any pics of this?
 
DatGtrPlaR said:
Nice! How was the improvement?
Click to expand...

Went from very muted to very clear, particularly in the high registers on those tweeters and the super tweeter. Of course, part of the problem was that the old caps, when they go bad, are prone to cutting off the higher end sounds entirely, and obviously tweeter >> no tweeters, so it's hard to judge the benefits entirely fairly.

If I were more mechanically/chemically inclined I might get into one of the projects where folks try to reclaim some bass by redoing the cloth surrounds, but I've not been brave enough to try that kind of thing. Soldering is more my line of work.
 
These old Sansui speaker woofers were not designed to have lots of cone excursion. I messed up a sp-200 woofer with acetone and a signal generator. The acetone did loosen up the surround and the woofer over traveled. I have found that if you just turn up the bass pot and play them , they will loosen up fine. Despite having large woofers they are not bass heavy speakers. But the bass they do make is very accurate . I especially like how they reproduce the jazz upright bass .
 
billyz said:
These old Sansui speaker woofers were not designed to have lots of cone excursion. I messed up a sp-200 woofer with acetone and a signal generator. The acetone did loosen up the surround and the woofer over traveled. I have found that if you just turn up the bass pot and play them , they will loosen up fine. Despite having large woofers they are not bass heavy speakers. But the bass they do make is very accurate . I especially like how they reproduce the jazz upright bass .
Click to expand...


When Sansui speakers were originally sold no one put them onto stands elevating them. They were always sat on the floor. I have found that if you do want them on stands something with a closed front really helps the bass, My SP 3200 sit on some old Yamaha NS cheap ass speakers that the width when laid on their backs matches up perfectly with the width of my 3200. Much nicer bass output now(I always run with the loudness on)
 
archibael said:
Went from very muted to very clear, particularly in the high registers on those tweeters and the super tweeter. Of course, part of the problem was that the old caps, when they go bad, are prone to cutting off the higher end sounds entirely, and obviously tweeter >> no tweeters, so it's hard to judge the benefits entirely fairly.

If I were more mechanically/chemically inclined I might get into one of the projects where folks try to reclaim some bass by redoing the cloth surrounds, but I've not been brave enough to try that kind of thing. Soldering is more my line of work.
Click to expand...
I did put a coat of Dot3 brake fluid on the cloth surrounds and it loosened them up and made an improvement in bass. I’m looking forward to see about a recap
 
My dad has a set of 2500's that I redid with Mundorf Films, Made a pretty pronounced difference. Yeah, they're not bass heavy speakers and they don't dig too deep, but nice non fatiguing sound for a high efficiency speaker.
 
You must log in or register to reply here.
Back
Top Bottom