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capacitors

  1. S

    $14 Goodwill steal; Yamaha NS-A100 3-way speakers.

    Me and my father visited Goodwill today to find some main speakers for our living room home theater. We have a big living room, so big speakers are a MUST. We found a pair of these Yamaha's for $29.99, with 50% off dropping it to $14. So we thought, why not? It certainly has a big, loud...
  2. M

    Marantz PM7200 lack of power?

    Allô everyone, thanks for this forum and your attention. This Marantz PM7200 cuts out the sound on both channels for a half a second on transients, and recovers. Until the next transient. It will do it as well on not very dynamic music with volume pushed, at the slightest peak. It does that on...
    • mossieurclo
    • Thread
    • capacitors marantz pm7200 power sound cuts out
    • Replies: 11
    • Forum: Solid State
  3. H

    Ready to give up on my Hitachi HT-550

    Hi all! First time posting here.. I bought a mint Hitachi HT-550 from an state sale a decade ago and have used it occasional ever since. I've been buying more vinyl lately and need a reliable unit. Also, Its such a beautiful turntable. Over the years, the speed began to slow for a second, then...
    • heavysixer
    • Thread
    • capacitors caps hitach ht-550 slow speed
    • Replies: 7
    • Forum: Turntables
  4. MacMan10-100

    Installing New Capacitors in Crossovers

    Hello. When installing new axial capacitors in crossovers, toward which direction should the negative lead go? Does it make a difference which direction the negative versus the positive lead go?
    • MacMan10-100
    • Thread
    • capacitors crossovers soldering speakers
    • Replies: 7
    • Forum: DIY
  5. G

    Elna main filter cap polarity

    Hey AKers! Do any of you know how I could determine the main filter cap polarity on these? They are from Sansui AU5900. It’s confusing when they say black negative, while the black dot is on the other side. Or does the black dot indicate the negative?
    • GytisB
    • Thread
    • au5900 capacitors filter capacitors main filter capacitors sansui sansui au5900
    • Replies: 8
    • Forum: DIY
  6. Sergimm

    C0G vs normal ceramic caps

    Hi, I've seen several restorations (especially in some of Leestereo's) in which they replace traditional ceramic caps with a C0G version with the same properties. Apparently C0G caps are less noisy and better in almost every aspect. What I haven't been able to find out is whether there is a...
  7. jFF_Bulbo

    capacitors opinions.

    Hello AK´ers I am restoring and upgrading my Marantz 2385. preamp section is almost done!! I´d like to replace the main capacitors for new ones. the 2385 have the pair of duals 6800uf/85v, i think to install 4*10000uf/100v is a good idea. I found cheaps caps here, but i can´t find the...
    • jFF_Bulbo
    • Thread
    • 2385 capacitors help marantz marantz audio project restoracion service upgrade vintage
    • Replies: 5
    • Forum: Marantz Audio
  8. Sergimm

    Yellow marks in original caps in Marantz 1050

    I am restoring an old Marantz 1050, and slowly measuring, recapping and cleaning its components. Yesterday when I was about to recap some electrolytic caps, I noticed that a couple of ceramic caps seem to have a yellow discoloration at the top (picture attached). After asking in the DIY forum...
  9. Sergimm

    Discolored ceramic capacitors. Bad sign?

    I am restoring an old Marantz 1050, and slowly measuring, recapping and cleaning its components. Yesterday when I was about to recap some electrolytic caps, I noticed that a couple of ceramic caps seem to have a yellow discoloration at the top (picture attached). Is that a bad sign? Of course...
    • Sergimm
    • Thread
    • capacitors color dyi marantz vintage
    • Replies: 6
    • Forum: DIY
  10. Leestereo

    New KLH 20 Crossover with WIMA Film Capacitors

    The crossovers in a pair of KLH 20 speakers were restored/upgraded with WIMA MKS2 capacitors. The KLH 20 speaker is essentially a KLH 17 speaker with a 4 ohm woofer and share the same crossover. Whereas the KLH 17 was sold separately, the KLH 20 speakers were part of the KLH Model 20 Music...
    • Leestereo
    • Thread
    • capacitors crossover klh 17 klh 20 klh seventeen klh twenty wima
    • Replies: 9
    • Forum: Speakers
  11. jcat8s

    Kenwood KR1000 III Nightmare!!!

    I took my receiver to a local service person to have my timer fixed. While he was in there, he discovered bad capacitors and recapped 21 of them. I brought my baby home, plugged her in and I just about cried!!! The nice warm deep bass is gone, the tones and mids sound like they are distorting a...
  12. klamsoss

    1060 rebuild on deck

    Good afternoon AKers! I've got a 1060 on deck for a rebuild. It hasn't been powered up in a couple years and the glue on the boards has corroded most of the caps pretty well. Nothing has been touched in the power supply since it was manufactured, so it's long overdue for some attention. I've...
    • klamsoss
    • Thread
    • 1060 capacitors diodes marantz marantz 1060 restoration
    • Replies: 43
    • Forum: Marantz Audio
  13. Strgazr1967

    Welborne Labs ST70 bias, caps and tube questions

    I picked up this ST-70 a few weeks ago and have been cleaning it, going over it and deciding on tube choice for when I set it up after Christmas. The wife's decorations require I take my system out for the holidays. I have a few questions. While going over the amp I noticed that whoever did the...
    • Strgazr1967
    • Thread
    • bias adjustement capacitors dynaco gold lion st-70 tube amp bias issues tubes
    • Replies: 1
    • Forum: Tube Audio
  14. Kreshna

    Solen caps in NHT SuperZero make trumpet sound harsh and ear-hurting

    About two weeks ago (September 15, to be exact) I replaced the crossover capacitors of my NHT SuperZero with Solen caps. I noticed the overall sound became less grainy and more fluid, especially cymbals and hi-hats. My wife is not an audiophile, so she doesn't understand audiophile jargons like...
    • Kreshna
    • Thread
    • burn-in capacitors kreshna aryaguna nurzaman nht superzero recap
    • Replies: 234
    • Forum: Speakers
  15. escorial

    Are These Bad Capacitors???

    I see something on top of the caps that looks like stick black foam rubber ? Never saw something like this before? There is no bubbling on the caps.
  16. cemerson

    Filter Capacitor Suggestions

    I'm replacing the filter capacitors on my SAE XXXIB Amplifier, and am looking for some suggestions. I have two 6000 uF 50 vdc (65 vdc Surge) and would like to replace them with something close. Since they have the 65 vdc surge, I'd assume I'd just go with something over 65 vdc. I attached a...
  17. klamsoss

    Thiel crossover rehab

    I'm about to rehab these Thiel CS2 crossovers. I'm experiencing what I think is rolloff above 16 or 17kHz although I don't have a way to measure. My comparisons are to B&W DM602.5 S3, wharfedale diamond 7.1, and B&W CDM1NT, all of which sound like they have more top end output. I have verified...
    • klamsoss
    • Thread
    • capacitors crossover diy thiel
    • Replies: 9
    • Forum: DIY
  18. mcgannahan

    Newbie questions about replacing crossover capacitors in Fisher Xp-9Cs

    Hey everybody, I'm tackling my first repair project by bringing a pair of Fisher Xp-9cs back to life. I've already refoamed the woofers and polished up the cabinets, now for the fun part... I'd like to replace the capacitors before sealing everything back up to to ensure they sound as good as...
    • mcgannahan
    • Thread
    • capacitors crossovers fisher xp-9c
    • Replies: 12
    • Forum: DIY
  19. DrRobocop

    Mc240 w/ "Black Beauties" only

    Hi all, I was planning on completely recapping my mc240 and noticed that all the capacitors appear to be the "black beauty" caps with no bumblebees. Is there any significance to this? Is this better/worse/no difference from the bumble bees? From reading various threads, I have seen it...
  20. M

    .05 MFD 600 Wvdc capacitor in Rek O Kut L-34

    I am trying to figure out what capacitor I need to replace this one on my Rek O Kut JR L-34 turntable. It is for the switch between 33 and 45 rpm. This may not be the right forum but any help would be appreciated.
    • marcushifi
    • Thread
    • capacitors rek o kut
    • Replies: 7
    • Forum: DIY
  21. oldoverholt

    Technics SL-1500 capacitor and finicky switch repair

    Hey all! Long-time reader, haven't posted here in probably ten years...but have gotten a bit back into the vintage audio game recently and have been paying some much-needed attention to my Technics SL-1500. For a long time the speed/on/off switch has been *very* finicky and you'd have to kind...
    • oldoverholt
    • Thread
    • capacitors deoxit turntable variable speed
    • Replies: 3
    • Forum: Turntables
  22. J English

    Recap for KEF Q15.2 - caps options?

    While my tweeters are getting reworked, I was thinking about replacing the capacitors on my KEF Q15.2 speakers. The original ones would be around 20 years old - they are LICON brand caps. One is marked as 8.5 uF/50v and the other as 12 uF/100v. Anyone know of some good high-quality replacements...
  23. bikingbuddha

    What could be the Filter capacitors of this circuit?

    I have no idea how to figure out. What could be the filter capacitors of this amplifier circuit? it is an tube hybrid called Qinpu Q2. I hope to fix the hum / buz it has by replacing the filter caps.
  24. T

    Lafayette LR400 Tube Receiver

    I just received a non working Lafayette LR400 receiver. Years ago, someone changed the capacitors to different values, mis-wired the unit and one cap is blown up. Could someone take clear photos of the wiring of their LR400 showing the power supply wiring and share? I do have the owner's manual...
  25. dingo1670

    MC240 Restoration

    Hello Fellow McIntosh fanatics! I am currently working on Restoring my first MC240. I have already gone through the PS Section and am currently measuring all of the Carbon Comp resistors and Capacitors. There is some debate o whether to leave the Red Lettered .22uf 600V Black Beauties in or not...
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