SV: Re: [sdiy] dr-110 snare and 2SC945

[Karl Ekdahl]

Aha! I got it working! One replaced transistor and a
few solder points desoldered and re-connected and it
works! Once again this list has proven to be the best
source of knowledge.

Thank you all! I'll post pictures and schematics in a
while, the voiceboard might not be too interesting or
an exact clone but the maze of logic ic's is at least
appealing to me.

Karl

--- "Roy J. Tellason" <rtellason at blazenet.net> skrev:

> On Wednesday 28 September 2005 04:43 pm, Karl Ekdahl
> wrote:
> > So my clone is beginning to work but the snare
> doesn't, it sounds really
> > weak and too low volume. The orginial schematic
> uses a 2SC945 that has
> > "excellent hFE linearity" which is the only real
> difference i can see
> > inbetween it and the BC548C i replaced it with.
> Does anyone know anything
> > about this? If i do need the 2SC945, is there any
> substitutes to be found
> > for it since the original seems hard to get here
> (sweden)..?
> 
> If you don't mind "salvaged" I _know_ I have some of
> those on hand here,  
> could look and see -- yep,  over 100 of them on hand
> here.  How much it would 
> cost to drop a couple in an envelope to send to
> Sweden I don't know,  but it 
> can't be all that much.
> 
> Do you have a datasheet for the part?  Apparently a
> letter suffix is 
> indicative of the beta range for the specific part
> on hand,  I can email 
> attach a datasheet if you like.  Seems like overall
> beta can run from 90 to 
> 600,  but they split that up into four different
> ranges...
> 
> -- 
> Member of the toughest, meanest, deadliest, most
> unrelenting -- and
> ablest -- form of life in this section of space,  a
> critter that can
> be killed but can't be tamed.  --Robert A. Heinlein,
> "The Puppet Masters"
> 
>