heathkit

  1. C

    Voltages are a little off and very distorted sound

    I’ve got a heathkit aa-21 early solid state amplifier that I’m working on. It was a basket case when I got it. I’ve got it to the point where at least it’s not blowing transistors immediately. Right now I’m only working on the amplifier section. I’ve got the preamp disconnected from the main amp...
  2. C

    Heathkit AA21 help

    I’ve got this hearhkit aa-21 and it have some power problems. I’ll explain what each channel is doing: Channel 1: 15vDc at the speaker terminals. I’ve replaced all the capacitors and out of spec resistors. All transistors test good. I replaced the outputs which were blown at some point during...
  3. C

    Gorgeous twin heathkits. The aa-151 and the AA-21

    It doesn’t get much more mid century than these two beauties! I can see why they called them the 57 Chevy dashboard. Clearly when heathkit went over to solid state they kept some of the tube tooling around. The AA-151 is one of the best sounding tube amplifiers I’ve heard and has just sold but...
  4. belletrist

    Heathkit SS-1B crossover alternative?

    Hi all, been a while since I posted, so greetings and good wishes to everyone out there! I've got a single Heathkit SS-1B "range extender" (add-on to the SS-1, providing extended lows and highs). Had it for years since I acquired it from someone in the area, who was cleaning out his basement...
  5. shnaggle

    Heathkit AS-48 (JBL L-99 Lancers?)

    Found a pair of these Heathkits, which I think are an off-branded JBL L-99 Lancers. Drivers are still working, thank goodness. But rear terminals are numbered "1" and "2" -- 1 is positive?
  6. Wordman

    Repair near Knoxville, TN

    Hello! Been a member for a long while, but haven't been on in a very long time. I have the full Heathkit Professional set w/AA-1800 amplifier and a DUAL turntable. Does anyone know of a place somewhere within a few hours drive of Knoxville, TN (or The Villages, FL) where I can take the various...
  7. C

    HealthKit AR-15 adventure

    I picked up this HealthKit AR-15 receiver for a decent price. When I got it, it had 1 working channel and that was weak. The through help of people on audio karma I was able to get what I think might be the best sounding solid state receiver I’ve ever heard! First things first check the...
  8. B

    Heathkit SP-2 Service manual

    Hello, I have recently acquired one of these awesome pre-amps and am searching everywhere for a service manual. Does anyone know of a source? I've only found one on ebay and they want $99 for it which I think is crazy. Hoping to find one (even if reasonably priced) online. All I can find is...
  9. I

    Heathkit AR-29 Help: Low Volume on Right Speaker Channels

    Hello, I have a Heathkit AR-29 and very little knowledge of what I'm doing. I am seeking help to diagnose why my right speaker channels (outputs 1 & 2) are outputting at a much lower volume than my left speaker. I am not experienced in restoring or repairing vintage audio equipment but I have...
  10. adnick

    Heath AS-101 history timeline, (HeathKit Altec Valencia internals in kit form)

    As the title says, looking for information about the HeathKit AS-101 production timeline Came across some historical data in Stereo & Hi-Fi Times winter 1974 magazine: Altec 846B $399.00 each, weight 99 lbs also available in sanded unfinished Birch w/ cloth grill for $349 each Heath AS-101...
  11. S

    Heathkit AA-201

    Hello AudioKarma, I recently acquired a heathkit AA-201, a stereo amp that puts out about 3 watts per channel. It is a cool looking little amp! It’s missing the rectifier tube but everything else is intact. My question is, what speakers should I use with suck a low wattage amp? I have a pair...
  12. Brice

    Little Heathkit SA-2 hum trouble - FIXED -

    Hi guys, I bought a couple of years ago a Heathkit SA-2 amplifier, but I don' t know why. This is a full integrated stereo amplifier with phono sections. A nice little amp to have in an office. I then decided to dive into it and restore as it is extremely clean and beautiful, with the same...
  13. AlexHempel

    Heathkit A-8A Restoration

    Decided to take a break from my balanced 6L6GC amp build to work on this little Heathkit A-8A integrated amp I picked up on CL. First pic shows the tubes it came with, from left to right: 6SJ7, 6SJ7, 6SN7, and two 6L6s. Obviously the 6L6s are mismatched -- the seller gave me two random UOS tubes...
  14. love pa amps

    Heathkit UA-1 amp rebuild

    I had to completely disassemble and rebuild this amp for several reasons, 1) the wafer type tube sockets were installed from the top instead of the bottom, which looked awful and also placed the solder terminals on the sockets too close to the edge of the socket hole on the chassis where they...
  15. david winter

    Heathkit AA-40 - strange voltages at 6AN8A plates

    Hi, I have been working on a Heathkit AA-40 amp for which I did the following works: - Set to 230V mode (powered at 240Vac). - Surgistor replaced with CL-90 varistor - Tubes: two NOS Sylvania 6AN8A + four good EL34 - All electrolytics and coupling caps replaced - Most resistors replaced (out of...
  16. Scott Burton

    Heathkit W-7a bias voltage fluctuation

    Hello, I have myself a pair of Heathkit W-7a mono blocks. They had been re-capped before I purchased them. I noticed one sounded a bit distorted in the higher frequencies so I changed the tubes and it sounded weaker in higher frequencies than it’s counterpart. I checked the bias of both amps...
  17. Reyhifi

    HeathKit AJ-15

    I got this one in a combo deal, back in February. I did some checking and got put on the back of the queue. So I decided to get it going, had to check what was wrong. The output level is wayy too low, so today I found a transistor with 4v to many so more troubleshooting needed. I did some...
  18. pantoramasan

    Heathkit Altec Legato Speaker Connections HELP

    If anyone out there has any information on speaker connections to these magnificent beasts, I would appreciate the information. Strange XO's with 3 leads to the speaker terminals. One of them had the wires snipped. The other was complete and I followed the lead for the second speaker. But I am...
  19. T

    HeathKit AD-1013 Audio Scope

    Hi All: I just picked up a Heathkit AD-1013 Audio Scope in great physical condition and it actually works fine - except the scope trace will not focus to a fine line. I have little info for this unit, other than a rather poor diagram i found on the internet, so i thought i would post this...
  20. RustyShak51

    Heathkit w5m Pros and Cons

    Heathkit w5m 25 watt tube mono amp from 1957 what's the ins and outs and what's to know.
  21. xXTomcatXx

    Looking for advice on transitioning to my new setup using Heathkit W-5Ms.

    Where I'm at Today After several years of enjoying a Magnavox console (185 amp with original Collaro record changer) that several of you helped me get working I'm ready to upgrade. It all works great, but I was ready to begin upgrading for better sound. So as a first step I purchased a Pro-Ject...
  22. kcline

    Current Analog Room Setup 45 SET with Arcturus Blue Glass 37-A Tubes

    When I got this amp it came with a 5 pin to octal adapter so a # 76 tube could be used in place of 6J5, I thought at the time that I wish I had some blue Arcturus 76 tubes, those are very hard to find. I have a collection of blue tubes and I remembered that there was a 76 like tube the 37-A...
  23. Panpanculcul

    Is this a Monoblock tube amplifier & who made it?

    Just got my hands on this nice piece, came from a collector estate but I do not know nothing about it. Went online but the only one who look's like is the Heathkit W-1 or W-2 or W-3M? I am sure someone knows about it on AudioKarma. Thanks in advance!
  24. Geoff Miller

    Heathkit AA 1600 plus Sansui AU 717

    Any thoughts on using my AU 717 as a pre amp for Heathkit AA 1600..Yes ? No ? Maybe ?
  25. W

    finished Heathkit W4's

    First a shout out to Dave G. for the stability mods...these actually sound very nice. I do have the WA-P2's but did not wire the octal sockets on the amps. Already enough strain on the power trannys' with 122vac at the wall. The one thing I love about these is the amount of room there is...
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