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dynakit

  1. W

    Purchasing a Dynaco ST70 that I can't Test

    I recently got the opportunity to purchase a Dynakit ST70 from a friend. These belonged to his father who has now passed away. I don't have a way to test the amp and have limited knowledge about tube amps. From the photos he sent it seems it is missing the fuse in the rear side. Could this be an...
  2. M

    Dynaco PAS2 can cap questions

    Lots of schematics out there, show the symbols to hook it up. And several replacement caps all with different values. I have seen 20-20-20-20, 30-20-20-20, 30-20-2010. Someone did some Dynakit mods, the can was wired 20-40-20-20. And then there are the electrolytic boards. And of course those...
  3. Benz

    What was done to this Dyna PAS (1)?

    Greetings, I just picked up a nice Dyna PAS + Dynakit ST-70 combo (my first tube gear, finally). Both units have been restored but I was wondering if the experts here could help me figure out what was done to the PAS as the previous owner wasn't a tech guy and only knew it had been restored when...
    • Benz
    • Thread
    • dynaco dynakit preamp tube
    • Replies: 41
    • Forum: Tube Audio
  4. GainFactor99

    Dynakit PAS-3: The calm before the storm

    After having way too much fun inhaling solder fumes with my son as we worked on getting rid of the hum on his Dyanaco SCA-35, I bid on a Dynakit PAS-3 preamp being sold at an auction in Arizona. Keeping my bidding in the lower $200's I thought I'd just get the thrill without the bill. But, I...
  5. Jeff Litt.

    Modified Dynaco Mkiii

    Hello Everyone, To start out, I have visited this forum over the last 3 years for research and information. I finally made an account to post some information about my equipment. This site has been very helpful in research and decision making on my equipment / tube selection. I have a pair of...
    • Jeff Litt.
    • Thread
    • adi ccda dynaco dynaco mk iii dynakit el34
    • Replies: 30
    • Forum: Tube Audio
  6. Denver jt

    Marantz 2230/Dynaco ST70 and headphones

    Hi All-My current setup is a Marantz 2230 going into a Dynakit ST70 and new large Advents. I LOVE this sound and setup. Now my question…. Since converting my 2230 to a preamp, the headphone jack no longer works. Does anyone know of a switch I could use to quickly cycle the 2230 through amp mode...
  7. David_NC

    Dynaco ST-70 - Upgrade Time?

    I bought this ST-70 about 2 years from a local GW. It came with good T-S 7199's and Philips EL34 / 6CA7's. It's in great shape and worked well, but I replaced the selenium rectifier, multi can cap, caps and resistors underneath, and the six caps on the driver board before putting it into use...
  8. J RR

    Yet another St70 issue

    Hey all tubers! Background: ST-70 with new board, can cap, bias circuit, selenium replaced diode, new Power transformer (about a year old, all of it). Started a low buzz a few days ago. Replaced all tubes: no go. Measurements: Can cap: A (Square): 227VDC B (triangle): 282VDC C (blank): 324VDC...
    • J RR
    • Thread
    • dynakit st-70 st70
    • Replies: 26
    • Forum: Tube Audio
  9. T

    Dynakit ST70

    Hey everyone, I just purchased a Dynakit ST70 Amp along with a PAS-2 PreAmp, and FM-1 Tuner. I am looking to restore them to original condition and this is the thread tor the ST70. I am looking for tips, tricks, and help to bring it back to life. My intentions are to replace capacitors and keep...
  10. T

    Dynakit Stereo 70, Dynaco PAS-2, Dynatuner FM-1

    Hello everyone, I need some opinions on some old Dynaco Stuff. I have the option to buy a Dynaco package consisting of a Stereo 70 Amp, PAS-2 Preamp, and FM-1 Tuner for $650 in unknown condition. They have been in storage for years and the guy said they worked before putting them there. I am...
    • Tucker_515
    • Thread
    • dynaco dynakit dynatuner fm-1 psa-2 stereo 70
    • Replies: 4
    • Forum: Tube Audio
  11. ADClosson

    Can I build a Dynakit ST-35?

    Greetings, all. I've been living contentedly with an old Yamaha A-1000 that, with the capable guidance of AK members, I recapped and repaired a few years back. I still enjoy the Yamaha and will hang on to it, but I'd like to try something else for comparison's sake. Dynakit Parts looks like an...
  12. G

    Dynaco ST-70/PAS2 History and Fun Facts

    Hey. I recently acquired a Dynaco ST-70 and PAS2 and was interested in finding out more about them (i.e Interesting facts about the units or company, stories, marketing campaigns, original pricing) anything anyone wants to share would be awesome. I look forward to hearing everyone’s responses...
    • GR3GRS
    • Thread
    • dyanco dynakit pas 2 st 70
    • Replies: 2
    • Forum: Tube Audio
  13. G

    PAS-2 Weak Left Channel Help

    Hello. I just got my first tube system set up. The left channel seems to be playing at a lower volume during phono playback. I have to turn the gain down pretty significantly on the right channel of my ST-70 to compensate. In turn I have to increase the volume on my PAS-2 to about the 1o’clock...
    • GR3GRS
    • Thread
    • dynaco dynakit pas-2 st 70
    • Replies: 59
    • Forum: Tube Audio
  14. David_NC

    ST-70 Restore... And What Next?

    I finally finished replacing caps, resistors, and selenium rectifier on my ST-70. I've got four inexpensive matched EL34's and an equally inexpensive 5AR4 sitting here in a box. I assembled a DBT today in case oe is needed and have a 60 watt bulb in it (I assume that's a good wattage to use)...
  15. gauze

    Do Dynakit PAS-2 vs PAS-3 have different footprints/dimensions?

    I guess this is more of a hardware question than tube but ... I bought a "PAS-2 bottom plate" and it doesn't fit on my PAS-2 it's 1/2" too wide. I asked the seller and he said he thought it might have actually been from a PAS-3, but I thought all the PAS models had the same dimensions. If it's...
    • gauze
    • Thread
    • dynaco dynakit pas-2 pas-3
    • Replies: 7
    • Forum: Tube Audio
  16. Johnny_Law

    Dynaco (kit?) ST-70 - hmm, someone's been in here before ...

    Very excited to buy this ST-70 a while ago, but it's been waiting for me to verify that everything looks good before I plug it in. From the caps up top, I could tell that someone had done some work before, but now I've opened it up and see that someone did much more work than I assumed. I...
  17. David_NC

    Dynakit Stereo 70 - My Introduction to Tubes

    I was at the local Goodwill today - the one with a separate electronics room - and found this amp. I kept checking it out and walked away from it a couple times. An older gentleman started talking to me about it. Evidently, he has the same model and really likes it. At any rate, $249 is way...
  18. stupidhead

    ST-70 acquisition, now what?

    Hello fellow AKers. I am generally a speaker forum browser but have recently upped my game a bit in the amp dept. Like many here, I was lost in the digital black faced audio world through the 90's and early 2000's, but have been finding my way back to analog. I have acquired a Marantz 2230...
    • stupidhead
    • Thread
    • citation ii dynakit harman kardon stereo 70
    • Replies: 57
    • Forum: Tube Audio
  19. bberkom

    PAS 2 - New volume control issues

    I have been gradually restoring and tweaking a PAS 2 over the last several weeks. Replaced the can cap, swapped the rectifier for some diodes, and recapped the stock circuit. The first modification I made was removing the tone controls from the circuit, following the Audio Regenesis...
  20. Ned Sheats

    Misdirected and confused

    A Dynaco PAS2 repair turned into a rebuild. Seeing as I am going to make it as good as possible I looked up an article by Mr. Carole (CAE) about improving the RIaa equilization. Now I am going to ask a question. Is anyone willing to stick with me on this because what I am finding is what he...
  21. J

    What I listen to

    This is a Rek-O-Kut belt-drive turntable with SME arm and Ortofon cartridge. The McIntosh tuner-preamp drives two Dynakit Mark 3 tube amps (on the floor below) that have been rewired for triode mode, using EL-34 outputs. All in a nice mahogany Victrola cabinet, complete with original decal on...
  22. gdmoore28

    Help Identifying a Tube Amp

    The short backstory: My old WWII electrician friend recently passed away. He was the only other person in our small southern town who was a fellow audio enthusiast. Before he died, he sold me all of his NOS Altec and University speaker components. Last week, I finally received his two tube amps...
  23. TravAndAlex

    Dynakit ST-35 - quiet static (popping noise) in one channel. Help!

    Hi. I'm hoping you can help me. I have a Dynakit ST-35 kit that I've used daily for a couple years. I love it! Unfortunately, today I noticed that one channel has an occasional static noise (quiet popping sort of noise). I tried disconnecting the pre-amp and I swapped tubes left to right...
    • TravAndAlex
    • Thread
    • dynaco dynakit st-35 troubleshooting tube amp
    • Replies: 101
    • Forum: Tube Audio
  24. Dynaco PAS 2

    Dynaco PAS 2

    My Dynaco PAS 2 Line stage with Siemens E80CC SQ and 24 step ELMA Attenuator, loudness switch used for -10dB level RIAA amp with TAD 7025/E83CC Highgrade (matched dou - matched anodes) ..,, Clearity Caps, SDS Labs PSU board, NOS Dynaco 12X4 rectifier, Mogami Cabling, Tiffany style RCAs ...
    • HiFiDude
    • Media item
    • 2 dynaco dynakit mod. pas pre-amp refurbished
    • Comments: 0
    • Category: Member's Tube Gear
  25. Dynaco PAS 2

    Dynaco PAS 2

    My Dynaco PAS 2 Line stage with Siemens E80CC SQ and 24 step ELMA Attenuator, loudness switch used for -10dB level RIAA amp with TAD 7025/E83CC Highgrade (matched dou - matched anodes) ..,, Clearity Caps, SDS Labs PSU board, NOS Dynaco 12X4 rectifier, Mogami Cabling, Tiffany style RCAs
    • HiFiDude
    • Media item
    • 2 dynaco dynakit mod. pas pre-amp refurbished
    • Comments: 0
    • Category: Member's Tube Gear
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