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hk 730

  1. SFP

    Harman Kardon HK 730 Twin VS. Luxman R-1050

    As the quest continues.... Between the legendary Luxman R-1050 (mint condition) and an HK 730, what would folks choose and why? I own an HK 430 (love it and my HK gear) but a friend has offered me his babied Luxman R-1050 which I have always admired for a really good price. I own gear I never...
    • SFP
    • Thread
    • comparison hk 730 luxman r1050
    • Replies: 28
    • Forum: Solid State
  2. czgeddes

    HK 730 stereo tuning meter

    Looking for a bit of friendly advice. I’m finishing a restoration and the stereo tuning meter (not the light) is working in am and not in fm. Would this be an issue within the mode/control circuit side A or in the function switch for am/fm, aux and phono? Head scratcher..
  3. dlucy

    Harman Kardon 730 and A-402 - PHONO stage differences?

    There's a great question just asked: the HK 730 and HK A-402 power amp stages are very similar; the Harman Kardon 730 receiver's PHONO stage, when recapped, is awesome; is the PHONO stage in the HK A-402 integrated amp the same as the one in the 730? Let's take a look: The HK 730 PHONO stage...
    • dlucy
    • Thread
    • 730 a-402 hk 730 hk a-402
    • Replies: 4
    • Forum: Solid State
  4. A Sound Mind

    HK 730 FM Stereo Alignment

    I fully recapped this receiver (electrolytics), plus cleaned and inspected every inch of it. The power output transistors have new sil-pads and thermal compound. I replaced all the incandescent lamps. The idle current and bias adjustments were set to factory specs. It sounds great now, but a...
    • A Sound Mind
    • Thread
    • harman kardon 730 hk 730 stereo alignment stereo indicator lamp
    • Replies: 57
    • Forum: Solid State
  5. Zeus12

    HK 730 New Bias Trimmer Unresponsive

    Greetings fellow audiophiles, Continuing with my partially restored HK 730 I decided to change the VR401 Variable Resistor (trimmer) since it was giving me issues and couldn´t get it past 13-18 mV. I used a Bochen 3296 W102 13 trimpot as a replacement...
  6. Zeus12

    Harman Kardon 730 Left Channel Bias

    Greetings Audiophiles, :) Started the recap/restoration of the HK 730. Those little popping/cracking sounds were getting on my nerves. I started with the Power Amp PC Board and so far I have replaced all electrolytics on the board with Nichicon UKL Series, and the Q401-406 with KSC1845 (F)...
  7. 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
  8. JMiP

    Harman Kardon 730 vs Your Favorite Citation

    I currently have an HK 730 paired with my KLH 23's and it simpatico defined. They sound wonderful together. Here's my question for the Harman Kardon experts in the house: Is there really a discernible difference between the HK 730 receiver and the best HK Citation amplifier? It might matter...
  9. JPJ

    harman kardon 730 restoration specialist?

    does anyone know if there is a place/person that specializes in restoring these? i have one that works but could use some love. would love to get it to as close to mint as possible, or would trade it out for something that has been restored. saw one recently on bartertown with an updated...
    • JPJ
    • Thread
    • harman kardon hk 730 receiver restoration
    • Replies: 13
    • Forum: Solid State
  10. xrayspex77

    HK 730 with Odd DC Offset problem

    HK 730 has High DC Offset on the L Channel for the 1st 60 secs after Power On. It seems to be partly related to the state of charge of the Main Caps. Readings are from the Speaker Terminals. If the Main Caps are fully discharged the sequence is -> 4-5 Secs then 16V which drops until after 60...
  11. dyche01

    HK-730 meets IMF ALS 40II

    For work and family reasons, I will be spending the next few months on the East Coast, and so I have been putting together a home-away-from-home stereo system. I shipped my HK 730 tuner and arranged to pick up a pair of IMF ALS 40II speakers locally. I have never listened to the IMFs but I heard...
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