Tuesday, April 5, 2016

Shielding SUT's



One of the biggest problems with rolling your own SUT is shielding them to get them quiet.  In the very near future I plan on offering two options to help the cause of the DIY'er for shielding.  One is a Steel box that has holes for RCA jacks and a ground lug.  This can be lined with mumetal and copper foil for an effective enclosure.  The other is a deep drawn mumetal can that can be placed end to end  for a final shield.  These can then be put inside a steel box for complete shielding.


Tuesday, March 1, 2016

Elmaformers

It is such a task for people (including myself) to solder the $400 autoformers to a switch so I am doing a circuit board that wires them directly to an elma switch.


While not being the smallest of finished items, it fits together nicely and can stack for as many decks as needed which makes true balanced operation a breeze.


This is a simple two deck "proof of concept" on proto boards with a 24 position switch that can have any desired taper you choose.  They will wire up lust like a traditional pot with In, Out and Ground connections for each deck.  I am so happy with the results I am planning another version on the 47 position switch that can have 1dB steps.


Sunday, February 28, 2016

From Russia With Love


So I receive a belated holiday present from a friend and it comes in a box with cyrillic letters on it so I get a bit excited.  When I open it, my first thought is why the hell did Fred get me an ugly red sweater?


Upon closer examination I quickly realize that there is something hiding inside that sweater.



Ahhhh,  now I feel much better but I am still really confused why this sweater used as packing has no armholes.  This naturally brings me to the conclusion that this isn't a sweater but a Soviet Era method of packing valuable tubes.  (take that eimac!) While the boys were having fun playing with the "armless sweater" their mom comes in and asks why there were playing with a skirt? We all need to go out and mow the lawn now.... or work on the car.... or something.....

Sunday, February 7, 2016

Random says 10

Random picked 10 as the winner.





drop me an email with your address and they will find their way to you.

dave


Tuesday, February 2, 2016

Freebruary


Just got these back from a vendor and they need a new home.  They are the current modules and have a cheap pair of interconnects soldered into them for a quick audition.  I'm leaving them as is and it is up to the lucky winner to decide what to do with them.

Leave a comment below with an identifiable name and Random.Org will pick a winner in a few days.



Thursday, January 14, 2016

Micro-Bomb



I finally sourced some MuMetal cans that are big enough to house the SUT's.  Two of them will fit together to house a pair and a band of adhesive backed mumetal holds them together nicely.

While not exactly small it goes a long way to getting the required shielding to package these things up.  Simply add a steel box,  some RCA's, solder and enjoy.

dave

Tuesday, December 1, 2015

Music Maker - Stevie K with a 16a

.

so my friend steve... no, not that steve with a 16a from North Carolina... this Steve... lives in a quiet little town... nice sunsets... small farms... and he is that guy who hears the records calling his name from every Goodwill he drives past.. which was a great very many as he drove quite a bit for work... now he just feeds his cows and spins those records... so he bought a new music system for all of those records... yep, another Western Electric 16a in North Carolina... and GIP 555w drivers..... which are beyond amazing... 

and Steve is a super hardcore DIY'er.... DHT line stage... DHT amp with DHT driver... built it himself!  and it sounds great... just fabulous... and he built the "Bass Base" for the 16a... check it out!


proper way to clamp



expansion shown with bracing every eight inches - super important!



walnut ply looks good




*live* Muddy, Chester, Buddy, Sonny Boy!!




NERDS!





 how is that for documentation?




and packaging...




these things sound absolutely stunning.. and remember, I have originals... contact me if you want to hear some.. 




Hey Furby!  You look like a sheep!!


peace,
me