capacitor
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Can't choose which big filter cap. Does it matter?
Hi, I'm trying to decide which capacitor to use to replace the big filter caps in a Luxman L-3. The original ones are two 6800uF 50V Rubycon caps. After much reading, I've decided I'll replace them with 10000uF 63V capacitors, and from the available at Digikey I've narrowed down to two: a...- Sergimm
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- capacitor luxman nichicon vishay
- Replies: 3
- Forum: Solid State
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Magnepan MGII Repair/Restore, Glue, Glue and more Glue
I bought a pair of MGII last fall on CL for $200.00 with known issues. They sat around during the winter because there was no way quality control would allow stinky glue in the house. I once finished off an entire office with Victorian woodwork, built in shelves, wood ceiling and did all the...- FireGuruMN
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- capacitor crossover delamination finishing glue magnepan mg2 mgii restoration stands
- Replies: 21
- Forum: Speakers
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JBL 4435 Recap and Mods with a Little Help from the Easter Bunny
I have another thread in the "Lansing Legacy" about these speakers also: https://audiokarma.org/forums/index.php?threads/jbl-4435-bucket-list-countdown.901225/ That thread talks about positioning and replacing the diaphragms in the horns. The executive summary: Position them wherever they will...- FireGuruMN
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- 4435 capacitor crossover jbl resistor speaker vintage
- Replies: 16
- Forum: Speakers
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Purchasing transistors and power caps on ebay, should I?
I'm sure that I will get some rather opinionated responses to this post. What are the chances that large filter caps listed on Ebay are any good? Will they be the actual brand that are advertised? If a component tester specs them out okay, would they still be worthwhile to use? There are... -
KLH 5 Guided Recap - Early Version - PDF
Hey all! This is my first recap job, be nice, lol. Attached is a document guiding those who need help with their KLH 5 Recap. GD70 recommended that I take photos and share my with everyone, but since this community has been so helpful to me I decided to make a detailed doc for those who are...- Zack Sainz
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- capacitor crossover diy fix how to klh klh 5 pdf recap refurb
- Replies: 3
- Forum: Speakers
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KLH Model Twelve, Five Pounds of Capacitors into a Four Pound box.
I got these off CL last Fall. $200.00 since you asked. Had to hide them in garage until the time was right. You've all been there. I still need to refinish the cabinets. They have a bit of a milky look to them and I like crisp grain. The contour box (crossover) has nice crisp grain and...- FireGuruMN
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- capacitor coutour box crossover klh model 12 model twelve speaker vintage
- Replies: 25
- Forum: Speakers
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Klipsch Heresy I Restore, oh no not another one.
I got a set of original Heresy's a couple of years ago. When I got them I hooked them up and they were unimpressive. I was hoping for 1980's boomy base to shake the room and that was not there. It never will be there until you buy Heresy IV's (or so I have heard). I Googled and Googled and...- FireGuruMN
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- capacitor crossover heresy inductor klipsch recap schematic
- Replies: 9
- Forum: Speakers
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Polk LSi7, Big Sound, Little Box, High WAF.
I had to get some music in the living room a few years ago. It had to sound good. It had to have high WAF (wife acceptance factor). I heard good things about these Polk LSi7's. A pair showed up on shopgoodwill and I landed them for about $200.00 which is about what they are worth. Since...- FireGuruMN
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- bass capacitor lsi7 polk small speaker
- Replies: 0
- Forum: Speakers
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Boston Acoustic A400--I'm the original owner!
Yep, bought these if Fargo, ND for $812.00 at Team Electronics back in 1984 if all those memory cells are still working correctly. I'm sure some are misfiring at this point. They were my main speakers until I purchased a pair of Polk RTIa9's a few years back. Now I've gone speaker crazy so...- FireGuruMN
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- a400 boston acoustic capacitor crossover replacement
- Replies: 27
- Forum: Speakers
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Finally finishing up AR3a restoration
First off, if you want a complete restoration guide go here: http://www.classicspeakerpages.net/library/acoustic_research/original_models_1954-1974/original_models_schematicss/restoring_the_ar-3a/ There is absolutely nothing that they did not cover in that document. I bought a pair of AR3a's...- FireGuruMN
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- acoustic research ar3a capacitor recap speaker vintage
- Replies: 7
- Forum: Speakers
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I had to re-re-cap
A couple evenings ago my Harman Kardon a224 suddenly started buzzing/humming. I pulled the bottom, and found that one of the caps that I installed when I first got the amp, was leaking. Note also liquid on the tie wrap and the other end of the capacitor (right near the (-) mark). The main...- linuxslate
- Thread
- a224 capacitor harman kardon recap
- Replies: 6
- Forum: Tube Audio
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Large Capacitor to High Pass the Woofer in speakers?
Does anybody do this? Something like a 660uf Capcitor to cut below 60Hz on my small 4 ohm woofer in desktop speakers. Can you do this then have a second order low pass filter (Inductor in series and capacitor in parallel)? In my experience, cutting out the low end from these speakers can... -
Sansui 2000a F-1180 - Two unpopulated Capacitors and Trimmer Question
Good evening, I was rebuilding the driver.amp board (F1180) on my Sansui 2000a and I noticed that C810 and C820 were never populated. No solder old or new in back and just empty holes. See Yellow Circles. The service manual says these are a ceramic 68pf/50v capacitor. 1) Should I...- akadrhouse
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- capacitor restore sansui 2000a trimmer pots
- Replies: 5
- Forum: Solid State
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Avid Corp. model 102 crossover needs recap
There was an earlier thread about this. I tried replying because I am in the same situation. But I didn't get a response because the thread is so old. So here goes my own thread... The tweeter is out on my right speaker because the "7.0 uf 30v np" cap on the crossover is bad and Parts Express... -
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Strange crossover help
I re-capped some Altec Lansing Bolero 890C speakers several months ago and I just mapped out what this crossover is doing and there is one strange thing: The tweeter has a 6uf cap which is normal then after that (in parallel) is a 3uf cap and a 15 ohm resistor. The resistor makes sense since... -
M
Need B&W DM10 recap/crossover advice
Hi, I have a set of B&W DM 10 speakers that I got at a garage sale when I was in high school. I understand that they are budget speakers but I still like to use them sometimes. Anyway, I noticed recently that the tweeter on one side has gone very, very quiet. I pulled the crossovers to try... -
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Noisy cassette tape recorder, even without tape (Sony TCM-200DV)
I recently bought this thing for cheap, and I'm ready to split it open and solder if necessary. It makes a lot of noise even without a tape in it. And even when an external speaker is connected. Video: https://streamable.com/kehx1 Any ideas? Thanks in advance:) -
Marantz 2216 C803 question
I am rebuilding the power supply board (p800) on my 2216. I bought a 5600uf/63v to drop into the 4700ug/55v in position C803. It had a "dummy Lug" with 3 spots. The diagram indicates the + to - span (see pic). My new capacitor won't span that. Leads are wide enough. It will span from pos to...- akadrhouse
- Thread
- 2216 capacitor power board
- Replies: 2
- Forum: Marantz Audio
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Thorens TD 147 x2
So, not to hijack Plattensp thread on the subject, I thought it might be beneficial no only to him but also others why make be thinking along these same lines. In fact, if you read what Plattensp say's in my quote from him, it sounds just like my story also. Except I found a high end TD 147 and...- USMC Spike
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- adjustment cables capacitor cartridge jacks mm or mc motor operation power supply thorens 147
- Replies: 11
- Forum: Turntables
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Any suggestions?
I recently picked up a 1980s Sansui amp, tuner, turntable and cassette deck for pennies . I know these were made after the great days of Sansui but the turntable is fine - direct drive and sounds good. The tuner works too. the cassette deck has liquified belts and I thought initially that the...- M1keC
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- amplifier capacitor hum mains
- Replies: 0
- Forum: Solid State
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Hitachi HA 610 Recap - Elna Silmic vs Nichicon Gold?
Hello everyone, I just acquired a Hitachi Ha 610 with the intention of recapping it. Of these, which series is best for the signal path? I plan on using Nichicon LKS for the 12000 mf 63v filter caps. Also could I increase the capacitance and voltage for the filter caps? If there is another...- Isaac C.
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- capacitor elna filter capacitors hitachi hitachi ha-610 nichicon recap
- Replies: 60
- Forum: Solid State
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1959 Zenith Question- Capacitor?
Howdy Folks! I joined this forum because I stumbled upon a 1959 Zenith Rigoletto SFD 2575 L at a local shop, and now it lives with me. Hoping some gurus here might have a pro tip or two on an issue it has. I love this thing, and want to keep it forever!!! Turntable works, stereo works. But...- TedB
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- 1959 2575 buzz capacitor hum rigoletto zenith
- Replies: 6
- Forum: Tube Audio
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LK72B ceramic disc capacitor labeled 5 NPO?
During the replacement of some really flux filled component lead sleeving, I removed a ceramic disc capacitor that said 5 on it and 10%. The Scott parts list calls it a ceramic capacitor, labeling it 5 NPO and can be seen in the schematic below (C16). First off, I don't know what the value is...- sbcrockett
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- capacitor lk72
- Replies: 10
- Forum: Tube Audio
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AKAI AP 306C - small value capacitors
Hi Y'all, Am busy trying to collect all the capacitors I need for the drive drive PCB (AP-2642) and stumbled upon two odd looking capacitors, in blue (electrolytic), from Sanyo having low capacitance values: 2.2uF/25v and 0.47uF/25v. Mouser isn't able to go that low in the preferred Nichicon...- Tuinstra
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- akai ap-306 capacitor nichicon
- Replies: 7
- Forum: Turntables
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Yamaha R-8 Receiver -- Cure for Alzheimer's
Today I cured my Yamaha R8 Receiver's Alzheimer's. It was incredibly easy, and if your R-8 or similar receiver keeps forgetting its presets, you can cure Alzheimer's too. By way of background, this receiver was made during the 1980's so surviving examples are getting long in the tooth. My own...
