Home » Audio » Swap Meet » Dynaco: 2 sST-70s, 3 FM-3s
Dynaco: 2 sST-70s, 3 FM-3s [message #32969] Tue, 26 August 2008 10:28 Go to next message
Russellc is currently offline  Russellc
Messages: 397
Registered: May 2009
Illuminati (1st Degree)
If anyone is interested a have a few Dyna pieces to liquidate:
1. ST-70 This is a nice ST-70 in working condition. It has the Allan Kimmel designed Welbourne labs mod I installed in the late to mid 90's. I would like to get 500 plus shipping. If anyone desires, for an extra 100 it will have a Mullard 5AR4 rectifier and a pair of
Raytheon 5751s. Otherwise it will have a russian 5AR4 and either GE
(or what ever I have available) 5751s. It has GE 6U8, and I will include several NOS replacements, as I wont need them without the amp!

2. ST-70 This one I got as only a top chassis and out puts. I installed the board, bias pots that came from the above amp when I modded it. I used the Audio by Van Alstein trick for the multi cap, a piece of board with Panasonic TSU caps by passed with an orange drop.
The power transformer is one which was designed as a collaberative effort between Audio by VanAlstein and the now defunct Sound Values.
It is thicker and puts out a lot more current than the original, otherwise appears just like it. The unusual thing about it is that it has a lower voltage, so that the 5Ar4 can be eliminated and solid state rectifiers used. This thing screams for freds in this location, but it worked as is and I never "fixed" that! This also allows for a stiffer power supply and to that end a big Cerafine Cap is concealed inside. 300 plus shipping. The original 7199 (again donnors from the above amp) are dead and so I dont have them. I rebuilt the bias caps, and have installed a modern diode. It hasnt been fired up in years, but I guarantee the Iron is way good!

3. This is a triode labs/SDS replacement board for the dyna ST-70
and is assembled and has NOS tubes in it, 75 shipped and all.

4. FM-3 number 1: Nice shape cosmetically, working eye tube, this one operates fine, and is in my upstairs system as we speak.125 plus shipping.

5. FM-3 number 2: Nice shape cosmetically, working eye tube, this unit is operating fine, and is currently in my downstairs system.
125 plus shipping.

6. FM-3 number 3: Nice shape cosmetically, working eye tube this unit operates, but not quite as well as the first 2 do. I have never attempted to align or replace any tubes, but it is a working piece. 100 plus shipping.

7. Dead FM-3: This one is dead, parts unit. It has an unusal, brand new face plate, has "Dynakit" on it, same Glass piece ( well they are actually plastic in the dynas) as usual, but it is flat, without the beveled edges typically along the top and bottom edge of FM-3 face plates. Like new condition on the face plate. 25 plus shipping

8. OFFERS DEFINATELY TAKEN!

Thanks for reading, I will post some pics this eve, or will be happy to email them to anyone interested.

Russellc

Re: Dynaco: 2 sST-70s, 3 FM-3s [message #32972 is a reply to message #32969] Thu, 28 August 2008 10:01 Go to previous message
Russellc is currently offline  Russellc
Messages: 397
Registered: May 2009
Illuminati (1st Degree)
St-70 amplifiers have both sold, SDS/Triode labs boards sold, Fm-3s still avaiable! come and get 'em!

Russellc

Previous Topic: Merrill/Scillia Delrin arm board, for AR, cut for SME
Next Topic: D'Charles 4" Fullrangers
Goto Forum:
  


Current Time: Thu Nov 21 08:46:59 CST 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Miller Audio
Miller Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest