Hmm, sounds interesting...
What would you charge for two bodies? I'd like to have them in the same matte black finishing as the capsules. Would that be feasible? Or would I have to air brush paint them?Jan
Superlux S502 MK2 test, teardown and improvements
- Thread starter MicUlli
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Help Support GroupDIY Audio Forum:
What would you charge for two bodies? I'd like to have them in the same matte black finishing as the capsules. Would that be feasible? Or would I have to air brush paint them?Jan
I must ask "my buddy" who does all my metal gear. Myself, I don't care about cosmetic so a bronze or inox body (for ex.) would suit me. For a black body I must see with him but in any case it's gonna be about painting...Hmm, sounds interesting...
Jan
We need non magnetic metal : have you guys some recommandation ?
About the diameter of the body and the step of the threading I must buy a MkII and measure the capsule. About the thickness of the body it depends on the chosen metal's strenght and rigidity (but I'm thinking of 2mm thick)
Now, the circuit... is it still Jan stuff ? could he do on a 19mm width board ? which length knowing that XLR connector will certainly be soldered at it ?
The capsule exists, the electronic board has to be designed (also mechanically) and then we'll know how to manage with the body...
2 other alternatives :
- print a 3D body (my "metal friend" does it also very well)
- cut the capsule holder (of course professionally) and adpat it to a new body > I don't know what is in the thread part : could @MicUlli show us a close pict ? There should be some connector... by keeping the capsule holder one could exchange capsule or body with real Schoeps
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Icantthinkofaname
Well-known member
I would say brass or aluminium would be best.
k brown
Well-known member
ubxf
Well-known member
I like the S502 MK2 and if it can be better I'm all for it 
just trying to bring it back to the original idea
just trying to bring it back to the original ideaI would say aluminium shouldnāt be first choice because of the fine threads (pitch is 0.3mm IIRC). Brass would be nice!
... And because of the potentially-uncertain electrical contact (since it oxidizes instantly, and the oxide layer, while thin, is highly acid-resistant and electrically-insulating).
Brass is easier to machine, indeed. Of all the SDC bodies I examjned, the brass versions had the best looking threads.
ARe you sure the thread pitch is 0.3mm? Any reference? I cannot accurately measure the thread pitch with my calipers with worn out pins, but comparing it under a microscope with a Behringer B-5, I'd say they are identical. AFAIK, the B-5 pitch is 0.45mm.
Thread diameter is 19.2mm, whereas the B-5 measures 19.0mm. This is why the B-5 capsule does not screw on the S502 MK2 interface, but that capsule loosly fits on the B-5 body.
I'm afraid we'll have to machine a dedicated body with exactly matching dimensions and threads.
A complicating issue is the diameter of the white capsule interface of 18.8mm, leaving only 1.2mm/2 = 0.6mm wall thickness for the body.
I'm afraid we'll also need a new interface, which has to be 3D printed or machined from PTFE.
Jan
ARe you sure the thread pitch is 0.3mm? Any reference? I cannot accurately measure the thread pitch with my calipers with worn out pins, but comparing it under a microscope with a Behringer B-5, I'd say they are identical. AFAIK, the B-5 pitch is 0.45mm.
Thread diameter is 19.2mm, whereas the B-5 measures 19.0mm. This is why the B-5 capsule does not screw on the S502 MK2 interface, but that capsule loosly fits on the B-5 body.
I'm afraid we'll have to machine a dedicated body with exactly matching dimensions and threads.
A complicating issue is the diameter of the white capsule interface of 18.8mm, leaving only 1.2mm/2 = 0.6mm wall thickness for the body.
I'm afraid we'll also need a new interface, which has to be 3D printed or machined from PTFE.
Jan
Hi
according to Jan measurements (he's got a MKII version) a first drawing of the mic body...
- 19,2mm is the largest width so the whole mic outside diameter could be (19,2mm thread + 1mm thickness x 2) = 21,2mm - or 22mm -
- we must go with some brass tube which width should be something about 18mm inside / 22mm outside : 18mm inside to cut out for the interface diameter (18,8mm) and for the thread diameter (19,2mm)
- below the interface collar the tube can be cut (by the XLR side) to get 1mm thick
- the interface can be glued with epoxy...
So the mic body could be machined in one brass tube piece... (I must check that but I'm confident)
according to Jan measurements (he's got a MKII version) a first drawing of the mic body...
- 19,2mm is the largest width so the whole mic outside diameter could be (19,2mm thread + 1mm thickness x 2) = 21,2mm - or 22mm -
- we must go with some brass tube which width should be something about 18mm inside / 22mm outside : 18mm inside to cut out for the interface diameter (18,8mm) and for the thread diameter (19,2mm)
- below the interface collar the tube can be cut (by the XLR side) to get 1mm thick
- the interface can be glued with epoxy...
So the mic body could be machined in one brass tube piece... (I must check that but I'm confident)
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Hello Ulli, great design, but I miss the two potentiometers in the Vpol circuit, they are very handy to even out small differences in the sensitivity of the capsules!
Maybe, but i swear on trimpot free designs
The capsules match very well. Small differences can be handled in the DAW..
