Thanks alot Michael and strangeandbouncy! You helped me very much!!!
OK, it is definately a Rhode und Schwarz microphone.
Rhode and Schwarz don't have ANY material about this early types. :shock:
They were'nt able to give any information, a second source of tube mic specialist for german vintage mics confirmed that to me per email (no datasheets, no brochures, pics or dates available from R&S because they don't have them).
Now i have this mic ready for dissection on the desk.
Sorry no pics for now, no camera until end of the week, but some facts:
Good news first:
The specialst says there were inquiries for this type of mic in the past for restauration and equipping (cable/psu) and there's absolutely nothing against the usage as a studio mic concerning frequency response and noise. :grin:
The capsule.
After removing the grille theres a silver matte shiny plain diaphragm that looks like in good condition. (ok i'm a tube mic newbie...)
It's hold by an aluminium (?) ring and seems to be tensioned by 12 small screws to a brass ring. Diameter is 34 mm (1"). Theres a very high quality and worthy looking brass capsule holder that shields the back of the capsule with a glass (through this one i read the serial).
the tube holder is directly mounted with the capsule holder in a distance of (exactly) 1 cm.
This one looks WOW. (More like a swiss watch than a microphone!) :shock:
Like every single metal part :shock: of this mic, the capsule is handmarked (other parts are engraved) with a serial 60-85627.
between capsule and telefunken EF804s holder (serial or type No. 477 on the top of the tube and looking like unused) there's mounted and wired a long bordeaux coloured 300M Ohm resistor (Siemens, it is a rolled type?!) and a 1,00K piggypink resistor (closed type). the wiring goes beside the tube to the 6 pin tuchel connector thats mounted in a perfectly body fitting aluminium pipe.
between two opposing pins there's a green part soldered looking like a resistor but i dont know. the ends are shielded with transparent plastic, "5% 0 5" in the next line a logo and "u" (cap?) Yes, one of these both tuchel pins is ground / mic body connection to the aluminium pipe.
Everything feels like fitting with a tenth of a milimeter (i mean perfectly...)
The grille is very properly and precise fitted and soldered. i doubt this microphone has been opened EVER before.
Wow, a little bit like "time machine". Quite strange to me (i.e. TUBES, BIG CONDENSERS) but very fascinating. i wonder what type of psu to use with this one.
Again any help appreciated...
Pics of the inner live very soon (for your galleries of really rare stuff...)
Martin
PS: OK CJ i can feel what makes you stick to old tube'N'iron technology!
:grin: :grin: :grin:
