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Tea-Bag Tea-Bag is offline

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diyAudio Member

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About Me

  • About Tea-Bag
    Biography
    I hope to listen and understand
    Location
    Kennebunk
    Interests
    Cycling, Audio, japanese maples
    Occupation
    computer networker
    Country
    United States
    Previously Known As
    mithomas
    Real Name
    Mike Thomas
  • Signature
    Salas Boards GB 2017#1 Click Here to Sign Up! | Hot-Rod DCB1 boards and kits In Stock, PM | M2C Boards Out of stock

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  • Recent Wiki Activity: Tea-Bag has no recent wiki activity
General Information
  • Join Date: 8th February 2006

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Blog

View Tea-Bag's BlogRecent Entries
Latest Blog Entry

Posted 17th April 2017 at 06:05 PM by Tea-Bag Comments 0
Posted in Uncategorized
DCG-3 preamplifier and DCSTB DC Power stabilizer purpose built for it

The boards are going to be in Matte black, like the PS on the right



Threads for boards:

Building Thread
http://www.diyaudio.com/forums/analo...ml#post4823253

GB Thread
http://www.diyaudio.com/forums/group...ml#post4855022

DCSTB Board $20
DCSTB Board $25
Transistor Kits for the DCG-3 and the DCSTB are available. Full kits are also available.
DCG-3 Transistor Kit $ 40 - includes matched transistors where needed.
DCG-3 Full Kit (includes transistor kit) $75


DCSTB Kits

Note that DCSTB kits only cover half the board. Additionally, if you wish to run at a higher bias and...

Posted 10th April 2016 at 12:26 PM by Tea-Bag Comments 0
Posted in Uncategorized
This blog is concerning ordering, parts, assembly and some brief sound review of the two new circuits designed by Salas.

The DCG-3 is a new preamplifier design. It offers 10-15db of gain, and can use several different types of input JFETs.
Here is the preliminary values in the schematic.



Here is the prototype board



Here is the Actual Production layout


The DCSTB is Salas first offering of a series regulated supply. It is very easy to assemble and includes two board assemblies off one power supply. This is a somewhat 'greener' approach and requires less waste current than say it's SSLV1.1 or BIB board equivelant....

Posted 27th January 2013 at 12:48 PM by Tea-Bag Comments 12
Posted in Uncategorized
Here is the F6 board rendered by CRT and some help from others.




It's convertible premise is to be able to swap out transformers using daugter cardsand be able to swap out variations on the schematics Nelson Pass presented at the 2012 Burning Amp Festival.
Additionally, places for two pairs of 2SK/2SJ are here to allow GR's to be used to allow for higher than 8ma IDSS without degeneration on the front end. If you have 8ma IDSS BL grade for use here, than your all set.
You can use standard power resistors or 5MM thin film type.



Here are some of the daughter cards that mount to the main board. They are available for Jensen, Cinemag and Onetics Quadfilar transformers.
These are mounted with 2 2x10 @ 2.54 mm pins. Note the PC PINs of...

Posted 10th October 2012 at 05:55 PM by Tea-Bag Comments 0
Posted in Uncategorized
Here are some pictures of the Power Supply that CRT and myself designed for use with the F5T and F6Convertible design. It is meant to be both compact, have adequate capacitance, and be able to use the recommended MUR3020W or similiar diodes. They are 2mm thick boards with 3OZ copper thickness.

(Updated boards take now 40mm wide caps and are larger measurements below and new pics)



Boards measure 108mm wide x 192mm long. The diode boards are 35mm x 54mm each.









...

Posted 7th January 2012 at 09:13 AM by Tea-Bag Comments 2
Posted in Uncategorized
This last weekend I replaced the IRFP240 in my F2 Clone with the R100 SouthSemi Power-JFET.

tubes-guy used psychic powers to control my mind and force me to do it.

The bias dropped off the bat. I re-biased and gave it an A-B listen to the standard channel. Seemed to be a bit 'cleaner' sounding the the default channel.

Nelson has recommended the following changes to the circuit, which I hope to implement soon. I will be re-wiring these on Peter Daniels boards.
The Peter Daniel boards are still available I believe.
http://www.diyaudio.com/forums/group...group-buy.html

Papa sayz...

The F2's that I have updated with the JFETs need the
following changes:

R6 = 47k (changed to 8.2K of FW Site)

C1 = 10 uF

Z1 removed

The potentiometer must be re-adjusted for minimum
distortion at 4.5 watts (symmetric clipping) and readjusted
...
Recent Comments
Would be interested...
Posted 21st April 2017 at 04:09 AM by YCLee YCLee is offline
I'm interested in a...
Posted 19th April 2017 at 01:47 PM by Berd Berd is offline
Any boards for sale?...
Posted 19th April 2017 at 06:03 AM by jlithen jlithen is offline
PLEASE Do Not write...
Posted 13th October 2016 at 12:32 PM by Tea-Bag Tea-Bag is offline
Where is the bom for...
Posted 4th November 2013 at 10:16 PM by mk57 mk57 is offline
Hide this!Advertise here!

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