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harman kardon

  1. notabot

    Harman Kardon A300 Missing Insulated/"Hot" Can

    Hi, I'm very new to tube audio and I'm feeling like I'm in over my head. I learned how to swim with my father throwing me into the deep end of the pool, and that's stuck with me ever since. Anyway, I can't find anything about this issue even after extensive Googling (probably not using the...
    • notabot
    • Thread
    • a300 can harman kardon harman kardon a300 hk hk a300 insulated missing rear
    • Replies: 27
    • Forum: Tube Audio
  2. S

    Harman Kardon Citation 17 troubleshooting

    Hello all, Im trying to figure out my Citation 17 preamp, I had everything recapped and resistors replaced to 1% metal film around 10 years ago. the power supply has 16v on the 15v rails right now. does anybody know what resistor to modify to get this into spec? also one of my EQ boards is only...
    • streetwise
    • Thread
    • circuit board help citation 17 harman kardon troobleshooting
    • Replies: 7
    • Forum: Solid State
  3. J

    HK770 HOT Left Channel

    Hi team, I have a Harman Kardon HK770 that I'm trying to fix up and put some real usage into. I've recapped the power and driver boards, and re-flowed any suspicious solder already. My issue is that the Left channel runs hot pretty fast, and when I check the output with a multimeter I'm...
    • Jacope
    • Thread
    • amplifier amplifier repair dual mono harman kardon hk770
    • Replies: 7
    • Forum: Solid State
  4. W

    What's This from a HK 730

    Recently received my NEW/OLD Harman Kardon 730. I'm pretty adept at mechanical and electrical. I needed to take off the front in order to get to the push button switches which were in poor shape and were causing dropouts and noise. Lamps were out as well and function selector switch needed a...
  5. Logchop

    Harman Kardon 450 Bass Problems

    Hi everyone, Recently got a new to me Harman Kardon HK 450 that works pretty well except for problems with the bass. It essentially has no bass response at all, and turning the bass up does nothing but give a big pop at about 80% of max. This unit did get pretty beat up in shipping thanks to...
    • Logchop
    • Thread
    • harman kardon harman kardon 450 hk
    • Replies: 6
    • Forum: Solid State
  6. J

    Equalization in 1950s Era Amplifiers

    I have a HK PC200 which I'm in the process of checking out. It's the older unit with the 6V6 finals. As part of my testing process, I connected the amplifier up to an 8-ohm resistive load and then made some measurements including frequency response. I was surprised by the frequency response...
  7. Phobosx

    HarmAn Kardon Citation 11 - DC on One Output

    Hi all. I have an oddball problem I was hoping someone may be able to help with. I have a Harmon Kardon Citation 11 Pre-amp. It has been working fine but earlier today I turned it on and one of the meters on my Amp pegged. So I turned it off and checked the cables. Turned it on again and...
    • Phobosx
    • Thread
    • citation 11 dc output harman kardon pre amp
    • Replies: 10
    • Forum: Solid State
  8. I

    Pairing help for a rookie and a small room

    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)...
    • iggytakov
    • Thread
    • bookshelf speaker harman kardon help help needed pairing receiver small room
    • Replies: 10
    • Forum: Speakers
  9. Allison3

    Citation 16 diagnosis/repair needed in MA/Southern NH/RI, please help!

    My wonderful HK Citation 16 has developed an increasingly persistent hum and has been acting (increasingly) dodgy over the past couple of weeks. I'm so frustrated trying to find a good tech near me, but if anyone knows someone who could check it out in MA/Southern NH/RI I would be super grateful.
  10. L

    Should I buy the Harman Kardon hk-50?

    Hello! I have recently come across some Harman Kardon HK-50 speakers in my area. Seller is asking $150 but there is apparently a small 8" woofer buzz at high volumes. I've heared old Harman Kardon gear is of high quality. Are these worth it? Thanks!
  11. M-Hassel

    Harman Kardon P725 | M770 Technical manual

    Good afternoon, I have a question regarding harman kardon models 725 and 770 for 100v. In the technical manual I could find, there are two versions only for 120v and for multi-voltage. Question, is there a technical manual for the 100v version of the P725 (HK725) and for the M770 (HK770)? If...
    • M-Hassel
    • Thread
    • amp amplifer harman kardon harman kardon 725 harman kardon 770 hk725 hk770 amplifier pre amp preamplifer techical manual
    • Replies: 0
    • Forum: Solid State
  12. L

    Harman Kardon AVR 3550-HD 7.1 Issues

    My Harman Kardon AVR 3550-HD 7.1 has recently started to shut off after being powered on for anywhere between 5 and 20 minutes and requires a power reset in order to turn back on. Everything works for those 5 to 20 minutes, it just won't stay powered on. This model is going on 15 years old...
  13. Audiohead84

    My mint Harman/Kardon A402 find.

    So have you ever walked into a store for one thing and get blown away by what you find in the back room, or just like it was ment to be the thing you have been searching for just happens to be there... So to give this some back story last month I was having issues with my athena technologies p3...
  14. Z

    Harman Kardon PM655 hum in both channel

    Hi Guys, I have a frustrating problem with the PM665 amplifier - a 50 Hz hum at the output that doesn't change with increasing the volume, and is equally audible on both channels. The level is low but audible in silence at a distance of 1-1.5 m. Taking into account the above, it means that the...
    • zlatko13
    • Thread
    • harman kardon hum on the output pm655
    • Replies: 8
    • Forum: Solid State
  15. JB8

    HARMAN KARDON 330A - Dead Right Channel

    Crew- I have another 330A, dead right channel, here's were I'm at. Initial testing revealed TR904 was bad so I replaced all four output transistors with 15034's TR608 & TR606 tested bad as well, replaced them with 1220 and 2690 (also replaced on left channel, I did this will all components I...
    • JB8
    • Thread
    • 330a dead channel harman kardon harman kardon 330a right channel dead right channel issue right channel no sound
    • Replies: 10
    • Forum: Solid State
  16. J

    Two sizes of Harman Kardon Rabco ST-8 turntables

    Hi all, anyone know any details about the two different sizes of Harman Kardon ST-8 turntables? I have one of each: One is 2-3/4" tall (high) , black brushed anodized sidewall, logo on the right side, with the baseplate recessed up into the sidewall. One is 2-1/4" tall (high), black brushed...
    • JHK
    • Thread
    • harman kardon linear tracking rabco st-8 turntable
    • Replies: 5
    • Forum: Turntables
  17. S

    H/K citation 11 and 12 - how to Connect?

    Hi, I apologize for this already now but I am newly diagnosed with hi-fi and I am a bit of a technical idiot. I just got a H/K citation 11 and 12 and wonder how I need to connect them? The 11 has a cable coming out that is open at the end with 4 cables. Red, white, black and green. Please help...
    • Saibot N.
    • Thread
    • citation 11 citation 12 harman kardon harman kardon citation 11 help how to connect idiot
    • Replies: 15
    • Forum: General Audio Discussion
  18. davstev

    Harman/Kardon 330C - speaker terminal replacement?

    Hi all, I picked up a H/K 330c, in decent shape, with just a few issues. One of the issues is that a whole row of speaker terminals is wrecked and needs replacing. This must be a common problem, they are pretty flimsy. I have disconnected them and taken the broken mount panel out too. There's...
    • davstev
    • Thread
    • 330c h/k harman kardon harman kardon 330c hk 330c speaker terminals
    • Replies: 9
    • Forum: Solid State
  19. Gain

    Which To Keep And Refurbish

    Hey everyone, hope I am not breaking any rules with this first post, but I have just arrived, and I am still getting costumed (used to be more active around here, but the latest years draw my focus elsewhere!) to the AudioKarma way =) TLDR: I need help choosing which devices to keep and restore...
  20. robz2000

    Harman Kardon 730 stereo bulb driver

    I think an old dead bulb shorted the stereo light in a Harman Kardon 730. If I ground directly to chassis it lights up fine. And of course stays lit. Getting @12v from the striped orange cable. Do any of you know what part of the system turns on/off the stereo bulb? Hoping maybe it's one or two...
  21. T

    Help planning out system

    Hi All! Thank you in advance for your input and advice. I've run into somewhat of an interesting predicament (imo, lol). I got my system up to a level that I absolutely love after over a decade of upgrading each component (other than the fact that movies/tv dont always sound right without a...
    • Tdaut
    • Thread
    • center channel combining systems goldenear harman kardon home theater no lfe schiit sub
    • Replies: 1
    • Forum: Home Theater & Video
  22. robz2000

    Harman Kardon 430 Crackling Issue

    Hi, I'm trying to do a restore on a harman Kardon 430. should be simple enough. But I've come across an issue i cannot track down. There is a crackle at all volumes. not a hum, but crackle. It occurs through headphones & the speakers. in both channels. it has to be the pre amp i would think...
    • robz2000
    • Thread
    • 430 crackle harman kardon vintage receiver
    • Replies: 17
    • Forum: Solid State
  23. O

    Hum from all inputs HK Nocturne Seven Twenty

    I have a (found) Harman Kardon Nocturne Seven Twenty that powers up but has quite the hum on all inputs. I opened it up for a quick look to see if anything had swelled or was leaking, but I didn't see anything obvious. I am not an electrical engineer by any stretch of the imagination, but have...
    • omegat3
    • Thread
    • 720 harman kardon nocturne vintage
    • Replies: 2
    • Forum: Solid State
  24. A

    A bit in over my head - Need help building a 2.1 setup

    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...
    • audio noob58
    • Thread
    • 2.1 system active subwoofer harman kardon harman kardon 330b help needed passive subwoofer phono input pre out
    • Replies: 18
    • Forum: General Audio Discussion
  25. JB8

    HARMAN KARDON 330B - Roached Resistors, No Output!

    Here's what I know: Unit powers up, no sound, no output at all across all functions, no voltage at speaker terminals Inserted outside source into main amp in's, no sound Pulled the bottom cover to check some voltages, was getting roughly 54V DC at the test lug (B5) at what I'm assuming is tied...
    • JB8
    • Thread
    • 330b harman kardon harman kardon 330b resistor values resistor wattage
    • Replies: 5
    • Forum: Solid State
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