[sdiy] Test builder wanted...

[David Ingebretsen]

Thanks for the fast replies! I think I have everyone I need now.

I'll be back when I get the next batch going.

David

~~ -----Original Message-----
~~ From: synth-diy-bounces at dropmix.xs4all.nl [mailto:synth-diy-
~~ bounces at dropmix.xs4all.nl] On Behalf Of David Ingebretsen
~~ Sent: Tuesday, August 03, 2010 11:24 AM
~~ To: synth-diy at dropmix.xs4all.nl
~~ Subject: [sdiy] Test builder wanted...
~~ 
~~ Hi everyone,
~~ 
~~ I'm getting very close to having PCBs, panels, BOMs, instructions, etc.
~~ ready to go for my Synthasystem resurrection. I would like to recruit the
~~ help of someone willing to test build some modules for me. As
~~ "compensation"
~~ I would supply the PCBs and a euro panel at no cost. You get to keep the
~~ finished module obviously. You would need to source the parts following
~~ the
~~ BOM. I'd like different people building different modules, but I'd
~~ entertain
~~ the help of just one person, too.
~~ 
~~ These modules can be built to work with a +/-12 or +/-15 volt main
supply.
~~ 
~~ The first modules I'd like help with will be:
~~ 
~~ VCO, VCA, and VCF.
~~ 
~~ I think typical cost for parts should be under $100.00 for the VCO and
~~ under
~~ $50 for the VCA and VCF.
~~ 
~~ Regarding sourcing problems, there aren't any really weird or special
~~ parts
~~ in these things. The JFET in the VCO is still in production, you can had
~~ match NPN pairs, use an SSM2210 or LS318, or some other small signal
~~ matched
~~ pair, or a THAT340. The PCB will accommodate all combinations. The VCF,
~~ and
~~ VCA use easy to get parts. To stay authentic, I recommend 2N5172s and
~~ PN5138s for the NPN and PNP transistors, but any standard transistor
~~ should
~~ work.
~~ 
~~ I think these are the toughest sourcing problems to solve here.
~~ 
~~ The time frame is still about a month or two out there, but when you get
~~ the
~~ PCB, I'd like to have it built and report back within a week or two
~~ understanding it will take time to source parts and if you are in Europe,
~~ transit time will also play into it. I'll try to get the BOM to you early
~~ so
~~ you can source parts ahead of time. This week I'm going to order what I
~~ hope
~~ is the last prototype boards and what will be the first release version
so
~~ I'm ordering a few extra. If they work, these will be the ones I send off
~~ to
~~ you.
~~ 
~~ If you are interested, send me a note off list and we can discuss
details.
~~ 
~~ Just think, you get to be one of the first to have an original Steiner
~~ Synthasystem module at a bargain price!
~~ 
~~ David
~~ 
~~ 
~~ 
~~ David M. Ingebretsen M.S., M.E.
~~ Collision Forensics & Engineering, Inc.
~~ 2469 East Fort Union Blvd. STE 114
~~ Salt Lake City, UT 84121
~~ www.CFandE.com
~~ 
~~ 801 733-5458 Office
~~ 801 842-5451 Cell
~~ 
~~ dingebre at CFandE.com
~~ dingebre at 3dphysics.net
~~ 
~~ 
~~ 
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