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harman kardon

  1. dlucy

    dlucy's guide to Harman Kardon minimalist series 230A, 330, 330A, 330B B-1, 330B B-2, and 330C

    The third era of solid state stereo receivers from Harman Kardon centered around the 330A and 330B and the clones made by Roland and Soundcraftman: This thread is a guide to those models, their specs, and pointers to schematics and restoration threads for each. If you have additional...
    • dlucy
    • Thread
    • 330a 330b 330c harman kardon harman kardon 330a harman kardon 330b harman kardon 330c hk
    • Replies: 50
    • Forum: Solid State
  2. dlucy

    dlucy's guide to Harman Kardon Nocturne series 720, 210, 200, 520, 530, 230, 330, 820

    The second era of solid state receivers from Harman Kardon were (what I call) the Nocturne series. This thread is a guide to those models, their specs, and pointers to schematics and restoration threads for each. If you have additional information on any of these models, send me a private...
    • dlucy
    • Thread
    • harman harman kardon hk kardon nocturne
    • Replies: 40
    • Forum: Solid State
  3. dlucy

    dlucy's guide to Harman Kardon Stratophonic series SR300 SR400 SR600 SR900

    The first solid state receivers from Harman Kardon were the Stratophonic series. This thread is a guide to those models, their specs, and pointers to schematics and restoration threads for each. If you have additional information on any of these models, send me a private message and I'll get...
    • dlucy
    • Thread
    • harman harman kardon kardon sr300 sr4000 sr600 sr900 stratophonic
    • Replies: 10
    • Forum: Solid State
  4. John Carr

    Old speakers with high quality AVR

    I have asked about using my Sansui sp200's on a newer amp such as my Harman/Kardon 1600, and I received responses saying the newer the speaker the better. I currently LOVE the way my speakers sound and yet they are 55 years old. Why are newer speakers known as superior?
    • John Carr
    • Thread
    • harman kardon sansui vintage speaker
    • Replies: 112
    • Forum: Speakers
  5. Chris Austin

    Harman Kardon HK 770 Power Amp Buzz on One Channel

    I recently acquired an HK 770 power amp. I've been using it with my 4 ohm Paradigm 9se speakers. I noticed that, after the amp has been on for about an hour, there is an intermittent buzzing in the left channel. It's very loud and I can see the woofers moving in my left speaker. I have...
  6. midfiguy

    Which harman/kardon amp(s) would you choose?

    You are building a new-to-you vintage system. You don't need a tuner. Choose one or one pair from this list, and if you like, tell why! A402 PM660 PM665 hk 725/770 hk 825/870 Citation 11/12 Citation 11/16 Citation 17/19 Citation 21/22
    • midfiguy
    • Thread
    • harman kardon integrated separates
    • Replies: 7
    • Forum: Solid State
  7. tlann

    Kenwood KA-3500 vs. Harman Kardon 330c

    Hello! So this is probably a hard question to answer, and I know there's some subjectivity at play here. But my old Kenwood KA-3500 recently went out of commission (seems to be a blown channel), and it looks like it will be around $150 to repair, with at least month turnaround—which feels like a...
    • tlann
    • Thread
    • blown channel harman kardon harman kardon 330c kenwood kenwood ka 3500 replacement stereo amp stereo amplifier
    • Replies: 16
    • Forum: General Audio Discussion
  8. L

    Looking for a reputable solid state amp repair shop in metro NYC area

    Hello, all I am looking for a repair shop that would fix my Harman Kardon PM660 amp in the NYC area. I was using a DeOxit D5 to clean the amp to fix a problem where the mode selector would only play on both speakers if it was set to mono, and stereo would output sound on one speaker and...
  9. Connor G

    Harman Kardon HK770 Thread

    Ever since restoring and listening to the Harman Kardon hk770, I have been an extremely avid proponent of them. I can't recommend them enough to people looking for a relatively cheap power amplifier that can drive efficient tower speakers, bookshelf speakers, and even headphones with ease...
  10. twelvety

    Harman Kardon PA2200 unstable DC offset and mysterious rails voltages

    I've scoured these forums for years and now I have a problem to ask you all about. I've learned so much already from @ConradH 's amazing Troubleshooting Audio Electronics Without Tears. It has reinforced the belief that I can figure this out if I understand the circuits well enough and test...
    • twelvety
    • Thread
    • dc offest harman kardon power supply voltage
    • Replies: 3
    • Forum: Solid State
  11. R

    HK DC Balance Problem

    I have been working on an HK6650R amp which is now working perfectly - almost. Both channels of the power amp showed distortion and the DC balance was WAY out on both (multiple volts). I reheated all solder connections on the power amp board and was then able to dial in the DC balance on one...
  12. CosmoK

    Harman Kardon SR 900 refurb (and tweaks?)

    I am refurbishing an H/K SR 900. A little background on this unit: it was possibly the first successful solid-state receiver hitting the market in 1964 or 1965 and selling for around $450. Inside it is all point to point wiring, with two output transformers and all(?) germanium transistors...
    • CosmoK
    • Thread
    • h/k harman kardon harman kardon sr 900
    • Replies: 14
    • Forum: Solid State
  13. C

    Harman Kardon HK-590i high voltage output to right speaker terminal

    Hi Everyone, I bought the receiver over the weekend and wanted to fire it up and hooked it to my Nova 6 speakers. I noticed a high pitched whine from the right channel and caught a whiff of that bad burning electronic smell. Checking into it I saw the crossover plastic cover had melted and...
    • CouchPotato
    • Thread
    • fried crossover harman kardon highh output voltage hk590i
    • Replies: 23
    • Forum: DIY
  14. I

    monoblock system set up questions

    I have a HK Citation 17 preamp paired with a Hafler XL280 w/ Musical Concepts PA-200 dual mono power supply mod. The XL280 is rated at 145 wpc at 8ohms. The amp is powering four speakers via the HK "special connecting cable". The cable connects to the speaker outs on the amp and routes it back...
  15. H

    Harman Kardon HK3480 sound drops/cuts

    Hi audiophiles (and others)! I have a HK3480 stereo receiver paired with a couple of Qln Artech 8 frontspeakers that has been working as a charm for almost 14 years. A trend that ended this fall. The sound suddenly disappeared, though switching the receiver on and off by unplugging it...
  16. L

    Harman Kardon pm655vxi repair help

    Hi Guys, I need a bit of help with my PM655 Vxi unit. I bought it completly dead and I'm trying to fix it, but I've hit the brick wall and can't figure it out. The amp fries resistors R474 and R476, as well as Q430. So far, I've replaced (as they were confirmed dead) the following, see the...
    • lemkoo
    • Thread
    • harman harman kardon kardon pm655 pm655vxi pm660
    • Replies: 2
    • Forum: Solid State
  17. L

    Differences between Harman Kardon ST vs T series turntables

    hey guys it seems like there is little information available on Harman Kardon turntables. I am specifically interested in what the differences are between the ST and the T series turntables. From what I could gather from the pricing on eBay, ST series seem to be more expensive than the T...
    • lnette
    • Thread
    • h/k harman kardon hk st-8 t-60 turntable
    • Replies: 5
    • Forum: Turntables
  18. alectrevelya

    You like Huey Lewis and the News?

    When Sports came out in '83, I think they came into their own. Commercially and artistically. I just recently picked up this terrific set from Innovative Audio in Surrey, BC. I highly recommend this place for your audio needs. I'd seen ad for the HK770 power amp, and JR kindly told me about...
  19. L

    Right channel doesn't work only when it's set to stereo

    Hello. I bought a H/K PM660 not too long ago and I have been enjoying them ever since I got them fixed. Over the last few days though I noticed something peculiar. The right channel wouldn't work when it's set to stereo. When I set it to reverse, the right channel works, the left channel does...
    • lnette
    • Thread
    • h/k harman kardon hk pm660 repair help stereo
    • Replies: 16
    • Forum: Solid State
  20. JPNH

    Grabbed A Harman/Kardon TA-230 Yesterday

    Decided to grab a TA-230 yesterday for a decent price. It needs to be refurbished. Caps, tubes etc etc. Not a bad sounding or looking receiver. Though the phono preamp is nowhere near as nice sounding as my 340b. Maybe once fixed up that will change. Wish it had the third speaker output, but I...
    • JPNH
    • Thread
    • harman kardon hk ta-230
    • Replies: 2
    • Forum: Tube Audio
  21. xchg.ca

    Oh no, Looks like my H/K CD-401 getting sick

    With green sickness. I was at first surprise with weird recording levels, then I was not able to bias any tape... And now I know why.... Well sooner or later this will happen to any old gear. Looks like I have to stash up some caps. So far I discovered that many of the shown capacitors are...
    • xchg.ca
    • Thread
    • 3 head capacitor cd-401 corrosion harman kardon leak raplace
    • Replies: 7
    • Forum: Tape
  22. HUM

    Did I fry my Harman Kardon? Please assist. Ty

    While trying to remove the 8v fuse lamps on my HarmanKardon 730 twin power i touched both sides with the pliers. Should have never been on. Unfortunately the lamps that were on, like the pointer and one behind the dial, went off. After installing the new bulbs behind the dial none of the lamps...
    • HUM
    • Thread
    • diy fuse harman kardon help hk730 lamps short twin power twinpower
    • Replies: 11
    • Forum: DIY
  23. David_NC

    Harman Kardon A300 / A30K Redplating

    I recently posted about buying a partially recapped A30K (kit version of the A300) in really nice shape. It had been recapped, other than for the 3 multi cap cans. I did not want to power this on without replacing these caps after experiencing one non-replaced cap explode in a Pioneer...
  24. NickDeO

    Requesting Troubleshooting Help - HK 730

    Hello again, AK! A few months ago, I picked up a Harman Kardon HK 730 Twin Receiver for around $160. I forget if the issue was "no sound at all" or "no sound in one channel" (I misplaced my original repair notes... whoops), but I had hoped that a recap and some DeOxit would get everything...
    • NickDeO
    • Thread
    • dead channel harman kardon hk 730 troubleshooting
    • Replies: 5
    • Forum: Solid State
  25. Allan Castle

    Vintage H/K: upgrades and alternatives?

    I'm considering upgrading some of my gear which I guess like most people's is a little variable in quality. I play only vinyl, with my current rig being: Turntable: Rega P1 with stock Rega Carbon cartridge; I know, I know... Amplifier: Harman/Kardon hk 450 ... circa 1978; this is my only...
    • Allan Castle
    • Thread
    • amplifier bowers & wilkins harman kardon rega solid state upgrade vinyl
    • Replies: 31
    • Forum: Solid State
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