kjohnsonhp Posted October 6, 2003 Share Posted October 6, 2003 SOLD I'm selling my recently restored Dynaco ST-70. The objective of the restoration was to replace the signal path with new audiophile capacitors, replace the tubes, and perform the most common mods without "hot rodding" the amp into something different. This is an execellent looking and sounding example of this classic vintage amplifier. PRICE $450 plus shipping. The work was done by an electrical engineer and anitque audio technician. I am currently enjoying the amp with my Cornwalls. The stock ST-70 had the following new parts: 4 EL34 Eiectro-Harmonix tubes by Sovtek 1 GZ-34 Rectifier 4 Hovland Caps 2 .047uF/630V 2 47uF/160V 1 JJ 20/20/20/40 Filter Cap (4 section electrolytic is mounted under the chassis, and the original has been left in place)) 2 470 ohm 1/4W Res 1% 1 1N4007RT 5A diode 1 16GA H.D. Line cord 4 STD Rubber Feet 4 Gold RCA Jacks 8 Gold Plated 4-40 screws Please email me if interested. kjohnsonhp@comcast.net Quote Link to comment Share on other sites More sharing options...
kjohnsonhp Posted October 6, 2003 Author Share Posted October 6, 2003 Here's a shot of the wiring. Quote Link to comment Share on other sites More sharing options...
kjohnsonhp Posted October 6, 2003 Author Share Posted October 6, 2003 Front with cage. Quote Link to comment Share on other sites More sharing options...
kjohnsonhp Posted October 6, 2003 Author Share Posted October 6, 2003 Here's a shot of the tubes w/o the cage. Quote Link to comment Share on other sites More sharing options...
Audio Flynn Posted October 6, 2003 Share Posted October 6, 2003 Pretty sweet. If I was not so happy with my Scott LK-48 i would be inclined to make a move. Quote Link to comment Share on other sites More sharing options...
NOSValves Posted October 7, 2003 Share Posted October 7, 2003 KJ, Your St 70 is in sweet shape !! Nice price for a fine example with the updates. Those RTX caps are not cheap and are suppose to sound great !! Craig Quote Link to comment Share on other sites More sharing options...
sheltie dave Posted October 7, 2003 Share Posted October 7, 2003 KJ, I tried to send you a pm, but it keeps failing. I will buy the ST 70. Just e-mail me your address and we can swap info when I get to a real computer. Our zip is 63111. Thanks, Dave Quote Link to comment Share on other sites More sharing options...
kjohnsonhp Posted October 7, 2003 Author Share Posted October 7, 2003 Unless someone buys the ST-70 I'll be doing a TEXAS DEATH MATCH shoot-out between my ST-70 and the NOSValves/Curcio hot rod ST-70 I just bought from the other Craig. In fact I've got a lot of comparisons to do. I have a NOSValves Scott 355 and NOSValves EICO HF-85. I also have a pair of 1977 Cornwalls and a pair of 1990/1 Cornwalls. One pair is going to Jeff (Eq_Shadimar). As Chuckie Finster would say...."which is betterest?" Maybe I should sell them all and buy KHorns and a new SET amp:) Quote Link to comment Share on other sites More sharing options...
mobile homeless Posted October 7, 2003 Share Posted October 7, 2003 Ken, why are you selling and what are you getting in its place? Some nice upgrades. Like the fact that you left the original cap on top and hid the JJ below. One point, I dont think this unit has RTX caps, which are the MIT Multicaps best cap (thought they dont make them anymore). I think he ended up with the Hovlands, which are the larger yellow caps on the circuit board at top. Still, the Hovlands are very nice with many proponents. http://home.earthlink.net/~aeholsten/2a3_moondog/70.jpg kh Quote Link to comment Share on other sites More sharing options...
leok Posted October 7, 2003 Share Posted October 7, 2003 kjohnsonhp, Nice work on the amps. I repaired one for an associate once. It didn't look as good, but sure had an impressive sound. I advise anyone considering tube pp should jump on this offer. leok Quote Link to comment Share on other sites More sharing options...
kjohnsonhp Posted October 7, 2003 Author Share Posted October 7, 2003 Yellow caps are Hovland Music Caps recommended by one of the ST-70 upgrade papers Kelly sent me. I forgot the author. Quote Link to comment Share on other sites More sharing options...
lynnm Posted October 7, 2003 Share Posted October 7, 2003 I can recommend Ken as a seller without hesitation. I have dealt with him before and would buy that amp ( or anything else he offered ) in a heartbeat if I could afford to. Quote Link to comment Share on other sites More sharing options...
NOSValves Posted October 7, 2003 Share Posted October 7, 2003 I guess my eyes are failing me I could of swore I seen RTX on those caps ! Dave, how many tubes amps do you intend to buy ?? Quote Link to comment Share on other sites More sharing options...
sheltie dave Posted October 8, 2003 Share Posted October 8, 2003 Craig, Right now it is up to seven. The top of the food chain is the Quicksilvers, then the Dynaco and Dee's 299c you massaged, the other 299c, the LK 72, the baby Dynaco and Sherwood mono that I scored by dumpster diving, and I in pursuit of another LK 72 and the 299c receiver out here in Spokane for $100. There may also be a set of pro La Scala base bins out here. I have too many sets of heritage speakers and (obviously) too many amps, especially since I am not counting any of the solid state that I have. I have three friends back in St. Louis that are clamouring for a setup, and I have my nephew's wedding next spring AND my favorite cousin will be getting married as well. It is really great fun to introduce others to Klipsch, and even better to help them get a good deal on a system they will enjoy for the rest of their lives if they want! Good homes, all. My electrician friend currently has the birch La Scalas running with th HK 430 that Fini sent me. He swears it is the best setup he has ever heard, and he designs and installs pro sound setups that can run in the mid five figures. He is very anxious to hear how the sound changes when he can drop the 299c in the mix. I am still bent over the MC 240 deal that went awry, but I figure I didn't spend $1,400 on that amp, and I will drop about $500 to get this one in the house, a savings of $900. I will be trying to hammer out a flexible two channel/five channel flex setup with the Quicks, ST 70, and the best 299c. I'll let you know if it turns into a monster, or if it sounds beautiful. Quote Link to comment Share on other sites More sharing options...
fini Posted October 8, 2003 Share Posted October 8, 2003 HAPPY BIRTHDAY, KEN!! fini Quote Link to comment Share on other sites More sharing options...
dodger Posted October 8, 2003 Share Posted October 8, 2003 ---------------- On 10/8/2003 7:53:45 AM fini wrote: HAPPY BIRTHDAY, KEN!! fini ---------------- Make that a double. dodger Quote Link to comment Share on other sites More sharing options...
kjohnsonhp Posted October 8, 2003 Author Share Posted October 8, 2003 Happy birthday to the both of you, too!!!! Amazing! I'm going to the STARS vs Ducks game tonight... Quote Link to comment Share on other sites More sharing options...
jazman Posted October 8, 2003 Share Posted October 8, 2003 Alrighty now! Another puck fan. Klipsch out. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.