Search found 69 matches

by deepblackjoe@gmail.com
Tue Apr 07, 2020 7:28 pm
Forum: Fractional Rack Modules
Topic: Blank panels
Replies: 22
Views: 637

Re: Blank panels

IMG_20200407_202606885.jpg
by deepblackjoe@gmail.com
Tue Apr 07, 2020 7:21 pm
Forum: Fractional Rack Modules
Topic: Blank panels
Replies: 22
Views: 637

Re: Blank panels

Maybe check out stainlessupply.com. They have a couple different grades of aluminum in various thicknesses. I got some frac blanks cut there in three different widths for less than $2 apiece. Shipping not that cheap, so I got a stack I'm still working thru. I sanded and then letter-stamped, but you ...
by deepblackjoe@gmail.com
Sun Mar 29, 2020 10:09 am
Forum: Music Tech DIY
Topic: Haible VariSlope Filter, parts values on Pcb?
Replies: 22
Views: 435

Re: Haible VariSlope Filter, parts values on Pcb?

Whoa thanks for this! Can't wait to dig in... Never would have figured out that pin swap on my own. The lockdown is looking a little brighter
by deepblackjoe@gmail.com
Sat Mar 28, 2020 5:33 pm
Forum: Music Tech DIY
Topic: Haible VariSlope Filter, parts values on Pcb?
Replies: 22
Views: 435

Re: Haible VariSlope Filter, parts values on Pcb?

Hey Siri, good to know I'm not alone. I tried writing r*s a couple times, & they asked me to send a pic, and I did right away. Then I followed up, etc, nothing. Maybe that info is gone now(?)... Anyway if I find anything out I'll post it here, could you do the same? Cheers
by deepblackjoe@gmail.com
Mon Mar 23, 2020 5:41 pm
Forum: Music Tech DIY
Topic: Blacet mixer output query
Replies: 1
Views: 54

Blacet mixer output query

I use the 5 channel panning mixer for my output module, it has two 3.5mm l/r Jack's and a stereo headphone out. Signal only comes from one side or the other, not both at once. Is this because I have to use stereo plugs for the mono outs? To listen I've been just splitting out of the headphone jack t...
by deepblackjoe@gmail.com
Sun Mar 15, 2020 10:19 pm
Forum: Music Tech DIY
Topic: Haible VariSlope Filter, parts values on Pcb?
Replies: 22
Views: 435

Re: Haible VariSlope Filter, parts values on Pcb?

I wonder if this is"r&d" or"reissue"... I might be hosed either way. Don't think I'll even start it without more details. I guess I can just wait to see if they write me back - maybe I should send a pic to them too. If the test builds work, maybe some docs survive. Not sure that I would spring for a...
by deepblackjoe@gmail.com
Sun Mar 15, 2020 9:29 am
Forum: Music Tech DIY
Topic: Haible VariSlope Filter, parts values on Pcb?
Replies: 22
Views: 435

Re: Haible VariSlope Filter, parts values on Pcb?

One would think. Guess I'll wait and see if they get back to me
by deepblackjoe@gmail.com
Sun Mar 15, 2020 8:57 am
Forum: Music Tech DIY
Topic: Haible VariSlope Filter, parts values on Pcb?
Replies: 22
Views: 435

Re: Haible VariSlope Filter, parts values on Pcb?

Uh oh I might be in trouble. I put together a SOST board and was going too put these two side-by-side in a 19" frac size rack. Hopefully someone out there has built this one and has the docs in their musty 3 ring binder. Thanx for looking bad producer, also for the SOST wiring diagram, very helpful
by deepblackjoe@gmail.com
Sun Mar 15, 2020 8:00 am
Forum: Music Tech DIY
Topic: Haible VariSlope Filter, parts values on Pcb?
Replies: 22
Views: 435

Re: Haible VariSlope Filter, parts values on Pcb?

Yeah RS still sells nos boards but not their own... I tried to follow traces around with the schematic for awhile but got bogged down, some areas are similar but then I get lost. Some of the new ref desgs are all letters and there are lots of differences once I start zooming in. I'd rather not go th...
by deepblackjoe@gmail.com
Sat Mar 14, 2020 11:51 pm
Forum: Music Tech DIY
Topic: Haible VariSlope Filter, parts values on Pcb?
Replies: 22
Views: 435

Re: Haible VariSlope Filter, parts values on Pcb?

That's the thing, unless I'm missing something. The component overlay in this link is for the original Haible pcb, which has a lot of similarities in the layout, but the Random Source one has them scrambled around. Thank you for responding, I wish they had just copied it directly. Any other ideas?
by deepblackjoe@gmail.com
Sat Mar 14, 2020 10:27 pm
Forum: Music Tech DIY
Topic: Haible VariSlope Filter, parts values on Pcb?
Replies: 22
Views: 435

Haible VariSlope Filter, parts values on Pcb?

Hello out there, I have a Random Source pcb for this I got second hand that only has the reference designations printed on it, and am wondering if anyone knows a place to see the corresponding values. I have the mouser list from Dave Browns site printed out, and the schematic, but only see the older...
by deepblackjoe@gmail.com
Tue Jan 28, 2020 4:20 am
Forum: Music Tech DIY
Topic: Dusg led query
Replies: 4
Views: 384

Re: Dusg led query (solved)

I just want to follow up and say that I put an extra 10k resistor in line with the anode sides of the LEDs, making it 11k total for each which made the bright yellows just right, fading how they should. This did not affect the time of the cycle however, so I tacked on an extra 10n cap in parallel on...
by deepblackjoe@gmail.com
Tue Jan 14, 2020 4:34 pm
Forum: Music Tech DIY
Topic: CGS29 Wave Mult using 12v?
Replies: 6
Views: 289

Re: CGS29 Wave Mult using 12v?

Got it.
by deepblackjoe@gmail.com
Tue Jan 14, 2020 3:13 pm
Forum: Music Tech DIY
Topic: CGS29 Wave Mult using 12v?
Replies: 6
Views: 289

Re: CGS29 Wave Mult using 12v?

In looking at the pots tied to the rails, did you mean decrease the resistor values by the same factor? I want to use 12v instead of 15
by deepblackjoe@gmail.com
Mon Jan 13, 2020 2:53 pm
Forum: Music Tech DIY
Topic: CGS29 Wave Mult using 12v?
Replies: 6
Views: 289

Re: CGS29 Wave Mult using 12v?

Thanx for taking a look , guest. I'll look at those in the schematic and try to understand the differences
by deepblackjoe@gmail.com
Mon Jan 13, 2020 1:33 pm
Forum: Music Tech DIY
Topic: CGS29 Wave Mult using 12v?
Replies: 6
Views: 289

Re: CGS29 Wave Mult using 12v?

I thought I should add that on the board there are eight resistors with designations printed instead of values, and in the instructions page for this, there is a list of these and what values they should be for 15v, and their functions which all seem like they would be affected (?). How does one go ...
by deepblackjoe@gmail.com
Mon Jan 13, 2020 11:43 am
Forum: Music Tech DIY
Topic: CGS29 Wave Mult using 12v?
Replies: 6
Views: 289

CGS29 Wave Mult using 12v?

Does anyone know if there are any resistor changes to make for this to work well with 12v? Thanks. Not seeing any mention in the docs
by deepblackjoe@gmail.com
Sat Jan 11, 2020 7:09 pm
Forum: Music Tech DIY
Topic: Dusg led query
Replies: 4
Views: 384

Re: Dusg led query

I read somewhere that in this circuit,use low current LEDs because drawing too much power can cause problems elsewhere. Is 20ma considered low? Maybe if it was kept from being constantly lit it could have an effect... Or is the timing cap a suspect? The fact that both sides behave so similar makes m...
by deepblackjoe@gmail.com
Sat Jan 11, 2020 3:55 pm
Forum: Music Tech DIY
Topic: Dusg led query
Replies: 4
Views: 384

Dusg led query

So I'm wondering if someone could please help me understand this better. I've built up a dusg with LEDs from tayda, which they say are 20ma, yellow. The current limiting resistors are 1k, and 47k at the base of the transistors, which is the silkscreen value, but the schematic has 150k. When I power ...
by deepblackjoe@gmail.com
Mon Dec 30, 2019 12:37 pm
Forum: Music Tech DIY
Topic: Stroh operator wiring diagram
Replies: 2
Views: 263

Stroh operator wiring diagram

I looked thru the different threads about this,and can't find one anywhere. Not sure which way the pots are supposed to be wired, or the LEDs. I have MTA headers already soldered in so it's hard to follow the traces. Anyone know if there is a diagram around? Thanx
by deepblackjoe@gmail.com
Thu Dec 19, 2019 6:48 am
Forum: Music Tech DIY
Topic: Suiseki Phase Shifter
Replies: 3
Views: 566

Is there a chance those empty resistor spaces need to have links put in? Shot in the dark
by deepblackjoe@gmail.com
Tue Dec 17, 2019 8:27 pm
Forum: Music Tech DIY
Topic: Shift Register Major Droop
Replies: 6
Views: 245

Just to update those of you with the good tips, the asr is now locked in the way it should be! Guest - you were right about the cleaning, that did it. Maybe the red color pcb made it hard to see how fluxey it really was! Makes me wanna try that on a couple other things too. Sad to say I didn't reali...
by deepblackjoe@gmail.com
Tue Dec 17, 2019 1:11 pm
Forum: Music Tech DIY
Topic: Shift Register Major Droop
Replies: 6
Views: 245

Yes it is a steady droop, just constantly descending as it trills thru the voltages. I'll clean it off better, and try swapping one out to hear the difference. A little I can live with, but this is immediate and severe. I guess I am wondering if different cap materials allow more or less of that. My...
by deepblackjoe@gmail.com
Tue Dec 17, 2019 5:55 am
Forum: Music Tech DIY
Topic: Shift Register Major Droop
Replies: 6
Views: 245

Shift Register Major Droop

Hello, I'm hoping someone will have some insight on this. I built up two elby designs asr boards,one is panelled so far. There are four caps, c201-204, one next to each of the ca3140 opamps, and the bom calls for 100n polypropylene. Perhaps foolishly I substituted 100n mylar greenies here (on both b...
by deepblackjoe@gmail.com
Sun Dec 15, 2019 9:22 am
Forum: Music Tech DIY
Topic: Trouble with Stroh Pico Vco
Replies: 10
Views: 673

Wow, you nailed it. I had two 100ks in parallel instead of 10ks for the 4.99k (r4), you busted me on the color codes! I massacred that area trying to desolder but got it scabbed together. It's funny that the range seems pretty small, and the hf trimmer has no effect so far, but the tone from tri out...

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