help needed

I have my grandpa's stereo that has great sound from the left-hand speaker (if you're looking at it from the front) but the right-hand speaker is almost nonexistent. So I decided to take the back off, take a look inside and see if there was anything I could tell to fix this. The two electronic...

I've been working on restoring a Harman Kardon 330C. I finished recapping the power supply, tone control, amp, and eq/phono board as well as replacing the 2SC1344 and 2SC1345 transistors on those boards with KSC1845's. Was getting ready to put it back together and noticed a faint hum in the...

Greetings, Audiokarma community. A few weeks ago I became curious about setting up my own stereo system since a friend of mine gave me a record player, and it seems to be in good shape. I've been reading forums and looking reviews about all types of hifi equipment (mostly receivers and speakers)...

Hl! I have a pioneer RG-2 and SR-303 that takes the Ja-r104 adapters but the real ones are sold at highway robbery prices like most vintage audio these days. Are there any after market alternatives? Also looking for after market rack mounts for a Scott 830z and Sony VT-M5. Any Ideas?

Hello! I've recently upgraded my turntable setup from CEC BD-2000 (VM95E) to Thorens TD 160 E TP-16 MK III tonearm with TP63 headshell (it came with Grado Green 1) Unfortunately compared to CEC BD-2000 there is no low end, bass is non-existent. I listen to Jazz, Rock, Soul and Electronic. Jazz...

I have got a JBL PB 12 subwoofer that I purchased in 2001. In about 2019, it decided to stop working. Long story for another thread, I have tested the NPN/PNP (Q2 and Q3) transistors in the power supply with an Peak Atlas DCA55 and they both test fine, however, given the scorch marks on the...

i’ve been looking to upgrade my record player for awhile now, as i’ve been living of a sh*ty crosley suitcase for too long. I’m very very new to record players (2 hours of research under my belt thus far ) and have found a pioneer PL-100 that’s in my budget and seems like it wouldn’t be to much...

Hello, I am looking for good tubes to use with my Schiit audio Vali, and they claim that the Vali can take any tube with a 6v heater and a heater current less than 600mA. I've tried using Frank's electron tube datasheets to search for tubes with these specifications, but I due to the unorganized...

Hi All, So I took the plunge and picked up a mint ("looking") Quad 405-2 with a Control unit 34 on ebay. It arrived very clean, complete with manuals, I just had to order the 5 pin din cable to connect the two units... now I have finally hooked it up, the lights on the 34 work ok, the front...

Hello everyone, today I got a very well-maintained (or so I thought) Sony PS-X600 (as an upgrade to my Sony PS-LX55), that came with a Grado GT stylus. However, When I sat down for a listening session it sounded awful...I did the most sensible that a newbie would do and took off the cartridge...

Hello! I am very new to the audio world in terms of getting a good setup and taking care of it. I was recently gifted my father's Denon PMA-725r amplifier/receiver and was looking forward to using it with my turntable, when that arrives. However, when I turned on the amp by itself there was a...

I need help identifying the transistors for this power amp. I'm experiencing issues with the left channel in which the volume is either near quiet or fluctuates up and down or pops then goes back quiet. I Isolated the issue to the amp and not the pre-amp. I deoxit the gains but still did...

So, the other day I was listening to a rather bass heavy record, and noticed that the lower driver on my left channel speaker was buzzing when the bass hit. I tried switching channels (it stayed with the same speaker/driver), messing around with equalization and even tried another set of...

I recently acquired a Technics SL-DL5 for $9 at the local Goodwill. Didn't run when I got it so did the normal routine and ordered a new belt and re-lubricated everything. Still nothing. Closer inspection showed that the moving tab on the cabinet switch was broken off so the turntable thought...

Hi everybody, This is my first post hoping to get some assistance. I managed to got hold of a beautiful sansui au 11000a which worked ok but was a little bit noisy and perhaps not as crisp as I would have expected. Based on my readings on this forum, I thought I would attempt a basic...

I am not a technician and need advice on getting upgrades done on two CR-2020s. See “Background” below regarding the our two CR-2020s. Anything will be greatly appreciated. Thank you. A couple of days ago I dug out our two CR-2020 receivers to look further into the speaker protection relay...

Hey guys, This is probably going to be long and complicated but I'm frankly struggling to figure this out and could use some advice. I'm not exactly experienced when it comes to diagnosing these sorts of problems. I picked up a Sharp VZ-3000 last week and I'm in the process of attempting to...

With loads of help from Hopjohn https://audiokarma.org/forums/index.php?threads/the-ka-3500-restoration.840144/ and Super Noob https://audiokarma.org/forums/index.php?threads/project-kenwood-ka-3500-nate-dogg.983234/ I’m restoring my dear old Kenwood KA-3500, not my first soldering project...

I'm a complete novice to the audio world and I'm hoping someone more experienced can help me understand the design of this crossover. It's from an Allen Organ HC-15 3-way speaker (15" woofer, 4" mid-range, & 1" tweeter). I looked up a few 3-way crossover designs and the closest matches were 2nd...

I have an H/K 330B receiver and a turntable (does not have a preamp). Because of this I plan to be using the phono input which to my understanding will utilize the receiver’s preamp. I plan to get tower speakers and a subwoofer but because there’s no subwoofer output I’m not sure what my...

Hey y'all, a friend of mine recommended me this community when he heard about my project. It started as a need for an audio solution for my living room tv and became a DIY project.. because I'm a masochist. I was looking to replicate a horn look and originally considered something like a...

I have always relied on my Kenwood KR 6050 and built my whole setup around it as it was one of the first components I got with my Dual 606 (might tell the short story if y'all are interested). However one day BOOM, the amp blew a fuse and apparently, the power amps left side blew and both of the...

Hi there all, Just wanted to know what is the best replacement for these power swtich caps? Would it be just 250v 0,047uF PME right?

First, let me thank everyone who participates here past and present. This forum is the primary thing that got me into vintage gear, and built my knowledge and confidence to try to conserve the Marantz magic for future generations. I've gotten myself into a pickle with this unit and hoping I...

This is my first post so I am sorry if I am in the wrong area. I am looking for the caps or a whole cap kit to revitalize my SX-990 that has been sitting in a closet for many years. I have looked online and have found nothing really for the 990 other then replacement boards, knobs, and the like...