Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
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Vince:



--- Quote from: TERRA Operative on July 02, 2022, 06:03:11 pm ---I've decided it's time to build something to use some of my test equipment on.

A tube amp it is...  :P

It's been sitting here in parts for a couple years now (well a bit more than a couple...) and is going to be a 35W + 35W Push-Pull stereo amp using 4x 7591 'Beam-Power Pentode' tubes for amplification, and some 6AN8 tubes for the pre-amp stage. It's taken and modified slightly from the March 1961 'Electronics World' magazine.

So far I'm drilling holes in the chassis, so not much to see yet.

--- End quote ---

WOW !!  Didn't know you were into vintage stuff, you took me by surprise !!!   :scared:

I hope the finished product will look better than the 3D rendering... the colours are a bit awkward ! :-DD

Looks like there is only a volume control, no control for left / right balance ? Could be useful...

6AN8 LIKE ! I mean....it's used in my Tek type 502A scope, 7 of them in there no less ! So I could do with spares, send me some !  :-DD

TERRA Operative:
I love old glowing glass  ;D , I got a collection of CRT's including a Maltese Cross Crookes tube and a 'Beam Bend' experiment CRT that has a phosphor panel along the path of the electrons so you can see a line and bend it with magnets. Even got a HeNe laser tube here somewhere (I used to have 5-10mW ones when I was younger, pulled from old tabletop-mounted barcode scanners you used to see in the shops).

I don't often use balance controls, I like to set up the room properly instead. My living room has a decent layout, so not a problem.

I plan to eventually get a reel-to-reel tape player to hook up to this amp too, but that's a future project....


I also have a bunch of parts to make a tube based PSU, good for a couple hundred volts or more. One day I'll get to building that too.
AVGresponding:
*kicks a bag of spanners down the Discord staircase*
Peter_O:
I will not drive to Berlin Steglitz, no I will not   :scared:



https://www.ebay-kleinanzeigen.de/s-anzeige/hewlett-packard-kepco-uher-etc-/2146996418-168-3415
bitseeker:

--- Quote from: Kosmic on July 02, 2022, 05:18:53 pm ---
--- Quote from: bitseeker on July 02, 2022, 04:47:20 pm ---In other news, lots of new POI added to post #2 (the extension to the TE list in post #1). Does anyone actually use the POI lists to find stuff in this thread? ???

--- End quote ---

Yes, I use the POI sometimes. Thanks for maintaining it  :-+

--- End quote ---

Certainly. BU508A has been catching new equipment that shows up so I can add them.  :-+

I'm tossing around some ideas in the back of my head regarding how to keep it growing. It's gotten pretty large, affecting its usability.
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