Interesting ebay find

[Mudhiker]

Has anyone populated one of these monsters yet? They look big enough to use tantalum resistors in them.

Not yet.  They are sitting here on my desk in the pile.  Will update when I do get to them...

[Grainger49]

Mudhiker, You and I are the kings of procrastination.  Don't feel bad, we have company.  They just don't admit it.

[dmannnnn]

Mudhiker, You and I are the kings of procrastination.  Don't feel bad, we have company.  They just don't admit it.

I resemble that remark.

Seriously, I will get to them sometime.  I just finished a refurb on the old Marantz HD770's.  So that leaves a magnepan crossover upgrade, Miracord 50HII plinth build, Step-up transformer build..... I will have them done by late 2011, promise.

[dmannnnn]

...I completely forgot about the pair of Knight 615HC triaxial (rebadged Electrovoice 15trx) speakers I put in storage.  Any suggestions for a sanely sized encosure for these would be appreciated.

[pro_crip]

The original links for these gems no longer works. They are available here: http://stores.ebay.com/Combat-Super-Store. I bought a pair of the 2 disc versions (he's got 1 disc versions as well) as a future stepped attenuator for my FPiii. I imagine those won't fit in the chassis so they'll probably get their own box. I plan on putting in Goldpoints or some such thing when I build. As an aside, that store has a buttload of caps available. There was also a 330 ohm 1kw wirewound resistor in there, talk about huge.

Rich

[HF9]

Did you gents ever put these together? I'd love to see some pics. These resemble the Shallco steppers at quite a fraction of the price (http://www.shallco.com/rotary_switch.html)

[Grainger49]

These are USSR Military Surplus.  I would guess that the quality control was high, as in, if you make a poor product for the Soviet Military you are .... gone.

The contacts are not going to be silver plated nickel which the Shallco most likely are.

[JamieMcC]

Ha ha, going to give this old thread a bump because funnily enough I have only recently been looking at some of these very same switches and was pondering over a possible attenuator build myself, only last night talking with another bottleheader about seeing them listed on ebay and low and behold while googling for references and further details on the switches a google image search pulled this very topic page up lol.

Did anyone ever get round to putting one together as a attenuator? While its not going to be the most practical item to install. There is I think decent potential for interesting and relatively inexpensive passive pre project using what looks to be a bit of well made interesting cold war Russian surplus kit. I was thinking along the lines of stacking two pairs together to get four plates for a ladder type attenuator. Initially I was thinking of mounting in a wood block but having a better view of the switches that are posted here mounting them in a clear Acrylic tube might make for a bit of a fun conversation piece.

So here is the link to the switches I have pulled the trigger on also the seller has single and twin plate types available.

http://www.ebay.co.uk/itm/251494056457?_trksid=p2060778.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

[JamieMcC]

Also noticed a attenuator build on Lencoheaven using the same switches

http://www.lencoheaven.net/forum/index.php?topic=10184.0

Right through with resistor calculations for a 100k pot.

(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fwww.thomas-schick.com%2Fpic%2FIMAG0160.jpg&hash=b62b0d1518cff2b43f41f250b989e28de1767be7)

[Paul Birkeland]

You'd really want to be sure that they are shorting switches, but the price to quality ratio seems to be really good.

[JamieMcC]

The lenco site confirms they are make before break and this pic from the sellers listing gives a bit of a indication.

(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fi.ebayimg.com%2F00%2Fs%2FMTA2MVgxNjAw%2F%24%28KGrHqNHJ%210E8%2Bm%2B8QBMBPV0yfyZcw%7E%7E60_57.JPG&hash=6cf0c4f69da374a8aeda2e9344c3b6d99e76ea9f)