Search found 278 matches

by rjd2
Wed Oct 28, 2009 8:09 pm
Forum: HELP!
Topic: Yamaha CS50 "logic chip" ?? Where to search for one?
Replies: 19
Views: 13002

Re: Yamaha CS50 "logic chip" ?? Where to search for one?

there is a very slim chance you would need to cannibalize one machine for another.

pics wont help, sorry. however, if you can tell if the CMOS ic's are socketed or not, you can eyeball whether or not there are several more hours of tech work, or not. if not socketed, add 2+hrs of labor on that job.
by rjd2
Wed Oct 28, 2009 5:42 pm
Forum: HELP!
Topic: Yamaha CS50 "logic chip" ?? Where to search for one?
Replies: 19
Views: 13002

Re: Yamaha CS50 "logic chip" ?? Where to search for one?

CMOS chips: cheap and readily available at:

mouser.com
digikey.com

as steve said, i think its unlikely its a yamaha proprietary IC.

good luck. are they socketed in a 50?
by rjd2
Thu Oct 22, 2009 12:13 am
Forum: HELP!
Topic: So what's the deal with a 2600 audio upgrade?
Replies: 8
Views: 1159

Re: So what's the deal with a 2600 audio upgrade?

yea, i definitely dont want to go shotgunning things. plus, replacing ALL caps IME is not always of the best cost/benefit action on old synths. shaft: fyi, the PSU is just a standard linear +/-15V unit. i used a Power-One unit, a/b-ed the sound w/ the old one, and could not tell even the slightest d...
by rjd2
Wed Oct 21, 2009 10:40 pm
Forum: HELP!
Topic: So what's the deal with a 2600 audio upgrade?
Replies: 8
Views: 1159

So what's the deal with a 2600 audio upgrade?

CMS is DOA, and google is coming up with no substantial description of any mods or upgrades for a 2600. the CMS site refers to "low slew rate" on some chips, audio path upgrades, and that's about it. has anyone here actually DONE any upgrades to a 2600? i spent the last X months just getting to know...
by rjd2
Mon Oct 19, 2009 4:11 am
Forum: General Synthesizers
Topic: Novachord #346 Inspection & Initial Wakeup
Replies: 390
Views: 85515

Re: Novachord #346 Inspection & Initial Wakeup

wow.....im blown away. your work looks SOOOO clean. wow. this is just awesome.

i can tell that you are the kind of guy that probably has 10 sizes of heatshrink and 10 gauges of wire on hand at all times, dont you? i am impressed.....
by rjd2
Thu Oct 08, 2009 12:47 am
Forum: General Synthesizers
Topic: Oberheim DSX-users, show yourselves
Replies: 3
Views: 527

Re: Oberheim DSX-users, show yourselves

im digging it, personally. its pushed me to write a few things that i never would have otherwise. fun to use. finicky, though.
by rjd2
Mon Aug 10, 2009 2:14 am
Forum: General Synthesizers
Topic: Oberheim DSX recording a sequence
Replies: 6
Views: 809

Re: Oberheim DSX recording a sequence

fyi, these replies(at least according to manual) are NOT correct. the manual details usage for CV output AND input. something to do with track 0 and the settings, i think. no need, so didnt learn it. Except that there is no CV/Gate input........ No input, no recording. however, if you turn the mach...
by rjd2
Thu Aug 06, 2009 2:41 am
Forum: General Synthesizers
Topic: Oberheim DSX recording a sequence
Replies: 6
Views: 809

Re: Oberheim DSX recording a sequence

fyi, these replies(at least according to manual) are NOT correct. the manual details usage for CV output AND input. something to do with track 0 and the settings, i think. no need, so didnt learn it. however, if you turn the machine on, and it will not respond to the panel w/o synth connected, i bel...
by rjd2
Thu Jun 11, 2009 2:06 pm
Forum: General Synthesizers
Topic: cs80 pheremones
Replies: 17
Views: 2174

cs80 pheremones

this synth is a trip. since it likes to warm up for 15-20 min, i turn it on and let it sit before playing. the funny thing is, it creates an ambience in the room when its on, because there is a VERY distinct smell that comes from the circuits. ive never smelled anything like it; its a tiny bit sweet...
by rjd2
Mon Jun 08, 2009 1:12 pm
Forum: General Synthesizers
Topic: Which Synth had the best Chorus?
Replies: 53
Views: 8814

Re: Which Synth had the best Chorus?

Hall Of Fame for chorus ensemble must be ELKA Synthex and Eminent Solina/310U yyyyup. synthex is the one for me. part of it is that it has 3 presets that vary from super subtle, to pitchy as h**l. its definitely the most useful. hfinn, its interesting you like the cs80 chorus. seems like its a 90/1...
by rjd2
Thu Jun 04, 2009 4:07 am
Forum: General Synthesizers
Topic: Have Prophet 10 values really tripled in the past few weeks?
Replies: 17
Views: 1860

Re: Have Prophet 10 values really tripled in the past few weeks?

are you sure you want one? have you played one? i found it to be an acquired taste, so to speak. played a fellow members, and i was much more impressed w/ his T8....seemed like a LOT of horsepower to handle....
by rjd2
Sun May 10, 2009 11:00 pm
Forum: HELP!
Topic: Where can I learn circuit design?
Replies: 9
Views: 2152

Re: Where can I learn circuit design?

i'd promptly make my way to electro-music.com, and the DIY forum within. alot of those guys are coming from an EE perspective; they can point you in the right direction as far as texts.
by rjd2
Tue Apr 21, 2009 5:27 pm
Forum: General Synthesizers
Topic: Oberheim DSX-users, show yourselves
Replies: 3
Views: 527

Oberheim DSX-users, show yourselves

just picked one up. this thing is wierd. who's got one? who had one? who lit theirs on fire in a blind fury?
by rjd2
Mon Apr 20, 2009 4:02 pm
Forum: General Synthesizers
Topic: Is the Polymoog Really as Unreliable as People Say?
Replies: 8
Views: 1055

Re: Is the Polymoog Really as Unreliable as People Say?

thanks for the offer, steve. as long as i dont lose anything else, im good for now. i needed about 6-8 of the divider chips that chris @ flatkeys in the uk provided, a few ca3080's, and an LM3046. once i get the PSU working again, i just need to tackle the "loudness" section, and everything should b...
by rjd2
Mon Apr 20, 2009 1:20 am
Forum: General Synthesizers
Topic: Is the Polymoog Really as Unreliable as People Say?
Replies: 8
Views: 1055

Re: Is the Polymoog Really as Unreliable as People Say?

steve-hard to say. i'd guess like this: inherent to machine: connector oxidization socket construction of front panel L and R boards makes hard to work on schematic mistakes due to wear maybe: component failure i think i just hit a convergence this week of annoying problems. the schem mistakes arent...