What Type of Capacitor is This? Can/should this be replaced with a film cap in the speaker crossover? I'm unable to find anything that looks like it on google.
AC
TSI-8044
PXB25LR50
25uF-50VA* (* last character is obscured, assumed to be 'C')
The cap looks like this with the above markings (pic borrowed from a diyAudio post from 2011).
As used in my crossover:
AC
TSI-8044
PXB25LR50
25uF-50VA* (* last character is obscured, assumed to be 'C')
The cap looks like this with the above markings (pic borrowed from a diyAudio post from 2011).
As used in my crossover:
Perhaps its bipolar cap.
MP caps are just aluminum foil typically rated for much higher voltage.
Bipolars are two electrolytic caps back to back.
You can replace with either. MP will be bigger and more expensive. May or may not sound better.
Bipolar will be cheaper and smaller. Good enough if you buy bipolar for crossovers.
MP caps are just aluminum foil typically rated for much higher voltage.
Bipolars are two electrolytic caps back to back.
You can replace with either. MP will be bigger and more expensive. May or may not sound better.
Bipolar will be cheaper and smaller. Good enough if you buy bipolar for crossovers.
This MP is just fine, its cheap.
https://www.parts-express.com/Dayton-Audio-DMPC-25-25uF-250V-Polypropylene-Capacitor-027-438
https://www.parts-express.com/Dayton-Audio-DMPC-25-25uF-250V-Polypropylene-Capacitor-027-438
Bipolar (non-polarized) are cheaper, and sound ok most of the time. They come in any value up to few hundred uF, which is great advantage against MP. They are much smaller too. Great for woofer crossover in parallel.
https://www.parts-express.com/22uF-100V-Non-Polarized-Capacitor-027-348
https://www.parts-express.com/22uF-100V-Non-Polarized-Capacitor-027-348
Those caps ( with the red epoxy ends ) are biploar electrolytics ( ubiquitous in usage during the 60's + 70's ) .
Apparently "AC" was a break-away company ( started by the senior portion of the family ) that was Callins capacitor company.
These caps have a built-in sort of wide-band soft compression ( that works quite well on compression drivers >> just the opposite of PolyPropylene types which can get dynamically hurtful > IMHO of course ).
🙂
Apparently "AC" was a break-away company ( started by the senior portion of the family ) that was Callins capacitor company.
These caps have a built-in sort of wide-band soft compression ( that works quite well on compression drivers >> just the opposite of PolyPropylene types which can get dynamically hurtful > IMHO of course ).
🙂
I also think they are old elco's from at least before the late 80's, and they should be replaced at that age. Elcap made a serie like that in the 1970 and 1980 that were often used in crossovers of speakers of that time. The other cap also looks like an elco from that time btw, in the other typical housing for those of that time.
Thanks so much for the info. Yes this is from an old set of speakers I got back the the late '70s (I think). I will be replacing all the crossover components.
The crossover is from these speakers ADC MS-650 Speaker Rebuild
The crossover is from these speakers ADC MS-650 Speaker Rebuild
See Ron's new (third) thread on this refurb: https://www.diyaudio.com/community/...am-i-dealing-with-hybrid.422705/#post-7903421