Picked up some pioneer CS-06 for fun and trying to tune them up. They are in great shape but the capacitors definitely need to be replaced, and I'm having a hard time finding the right ones to buy. I definitely want some quality ones made for loudspeakers, like from ClairtyCap. Could someone help me with a link to buy the right ones? Need two 1.7uf 63v and two 7uf 63v. Thanks! First time doing audio work so any advice helps.

I was cleaning this unit after I received no sound and I noticed that r221 r206 and vr 201 are missing. I ended up printing a schematic for it and found no such parts in the diagram.

I just picked up one of these subs cheap and noticed it has a heartbeat sound when idle (the sub clicks subtly back and forth in a steady rhythm and is noticeable when no audio is playing). Sounds like bad caps somewhere in the circuit. The pulsing seems to pull the voice coil and cone back just slightly then moves it forward, like the amp is rhythmically applying a negative charge to the voice coils. I've included a link to a video of the pulsing. The pulsing continues while music is playing but is overpowered by actual sound signals driving the sub.

Anyway, I pulled the amp out and found two swollen caps on the PSU board, so I replaced those. Didnt fix the issue, so there must be more bad caps. I ended up replacing all caps on the power supply board including the large 100uf 160V filter caps. I've heard replacing these will cure a known hum issue but that did not fix my issue.

I am now thinking it is likely something on the power amp board (there are three boards: the PSU, the power amp and the preamp (input). Any ideas what kind of failed component would cause this? There are more caps on the power amp board I can swap out, though I have already pulled and tested a few and they are all fine (they are all visually fine).

I love these Sunfire subs and don't want to give up on this one yet. Let me know if you have any ideas!

So been wanting to find an old receiver for a home office stereo 2.0. Last week I came across a Luxman R-115 for a good price? $200 on FB marketplace. Apparently the owner received it from her late father and receiver was working previously. I went over to there house and we got it hooked up and it would not play. Pushed all the buttons and played with a few things and suddenly it started to play on the FM antenna which is all I could use as I did not bring anything else but some speakers. Sound came out when I tried to use a patch cable to plug up the signal processor as the on/off switch seemed to do nothing. I disconnected the patch cable and hooked it back up and now no sound again. I let her know that I'm not any electrician and not sure I wanted to risk buying it. She threw out an offer of $50 and I instantly accepted which now I'm wondering if that was smart or not. I took it home and hooked it up to FM and my wiim pro. I could not get any sound and started playing with buttons again and then out of nowhere sound came on when I hit the cd direct a few times. Then turned off and back on and no sound again. I called our local repair guy who unfortunatly has a 6 week back log. He suggested i try to just clean the unit and maybe try some deoxit. I'm not sure how comfortable i'm doing this as I would hate to make it worse. I don't have electronic skills but I've built a few desktop computers over the years. Any suggestions on how to clean this unit and see if it's something simple before I pay a $50 non refundable deposit so I can get on his 6 week waiting list.

I bought this on ebay.

Bowers and Wilkins 702 S3.

It looks like the edges of the rubber on the woofers has wear. Looks as if some of the top layer got rubbed off? Or it's something else. This is present on the outer edge and inner edge all around on each bass woofer (3 bass woofers total).

Speaker seems to be working and sounding fine. I just wonder if it's going to last for a good amount of time. I got a different open box speaker from a different seller, to pair with this speaker, and the rubber on that one looks new, uniform, no wear.