asm-1 parts/substitutions

[Magnus Danielson]

>>>>> "AMB" == Adam M Bowen <abowen at POMONA.EDU> writes:

 AMB> i'm not a complete moron when it comes to electronics, but i am a
 AMB> physics major so when it comes to practical stuff like substituting
 AMB> parts--which i'm sure any EE person would say is an art--i'm a little
 AMB> lacking. so forgive the idiotic questions.

 AMB> anyway, here's my Qs re the asm-1 and diy synths in general:

 AMB> 1st 
 AMB> nobody ever seems to mention resistance values for panel pots. why not?
 AMB> are all the knobs on the asm-1 supposed to have the same nominal
 AMB> resistance? i ask partly b/c i came across a box of like 300 100kOhm
 AMB> pots. they're double, but so what if i can save the cost...

Many of them is not mission critical, but 100 kOhm pots are
recommended for all the normal CV and level pots. There are a number
of 1 MOhm puts there also.

Please note that there are both LIN and LOG pots in the above
statement.

You just made me realise that I don't have that on the webpage...

I will try to fix that.

 AMB> 2nd
 AMB> is low tolerance paramount for the metal film resistors? it would save
 AMB> me more cash and lots of hassle if i could just use my 5% tolerance guys

The text will make clear indication where 1% is strongly recommended.
I went for 1% through out... it is not much money after
all... frontpanel, knobs, contacts etc will make resistor cost
differences drown...

 AMB> 3rd
 AMB> the midwest analog products ms100 power supply includes a third, +5v
 AMB> source. what is this used for, generally?

TTL logic and much of the CMOS stuff as well.

MVH
Magnus