Search found 2329 matches

by Jarno
Wed Oct 21, 2020 4:52 am
Forum: Music Tech DIY
Topic: Phaser Design
Replies: 19
Views: 480

Re: Phaser Design

To the thread starter, Frequencycentral here has a ton of experience on phaser design.
by Jarno
Mon Oct 19, 2020 7:28 am
Forum: Music Tech DIY
Topic: Solution to clogged hole with solder
Replies: 24
Views: 430

Re: Solution to clogged hole with solder

+1 Toothpick works really well, you can get them in very thin variants. Mine have a menthol smell, which is a bit weird when soldering :)
by Jarno
Fri Oct 16, 2020 3:39 am
Forum: Music Tech DIY
Topic: The 2020 Show Us Your DIY Builds Thread!
Replies: 423
Views: 35539

Re: The 2020 Show Us Your DIY Builds Thread!

Looks pretty good, it'll be plenty robust as long as it sits under a thick layer of lacquer.
by Jarno
Thu Oct 15, 2020 12:39 pm
Forum: Music Tech DIY
Topic: The 2020 Show Us Your DIY Builds Thread!
Replies: 423
Views: 35539

Re: The 2020 Show Us Your DIY Builds Thread!

I've slowly been building up my synth since February. I learned how to use KiCad and made a PSU and some busboards. I then built a case and started getting into building up modules,just sourcing PCBSs. I'm trying to do everything by hand - cutting panels, drilling holes, designing graphics etc. Her...
by Jarno
Wed Oct 14, 2020 6:56 am
Forum: Music Tech DIY
Topic: Coolaudio 3046 transistor array clone
Replies: 23
Views: 792

Re: Coolaudio 3046 transistor array clone

National's LM3045,46,86 Transistor Array. Even though some specs are different -parts were binned as '46 or 86' by testing- So they do have different bins for this part, wasn't aware of that, thanks. edit: Seems the 3045 has the "wide temperature range" packaging, so that is not a different die, pr...
by Jarno
Tue Oct 13, 2020 3:59 am
Forum: Music Tech DIY
Topic: Coolaudio 3046 transistor array clone
Replies: 23
Views: 792

Re: Coolaudio 3046 transistor array clone

The RCA 3046 is still fairly common on the surplus grey market. I'm sure someone will say they're surplus because they're out of spec but generally I've found that not to be the case with other devices I've obtained that way. Probably not out of spec, because they wouldn't have packaged them if the...
by Jarno
Tue Oct 13, 2020 3:46 am
Forum: Music Tech DIY
Topic: DIY Trade Thread [ Parts, PCBs, Panels ]
Replies: 835
Views: 148322

Re: DIY Trade Thread [ Parts, PCBs, Panels ]

2B7CD124-DD0F-434D-ADA3-D0CA3A3ED399.jpeg Blanks. Not 100% hp accurate (ie may result in <1 how gaps if using threaded strip, but pretty all the same. Some silkscreen blemishes but nothing terrible. Need to quote this, because those panels are great Paul! Nice work! How much are they? Edit: ah, dam...
by Jarno
Mon Oct 12, 2020 9:14 am
Forum: Music Tech DIY
Topic: Kassutronics VC Slope
Replies: 5
Views: 273

Re: Kassutronics VC Slope

Ordered 2 PCB's (despite having 4 VCS's already :D , one cannot have enough slope generators) Has anybody built one yet? I’m curious about the cost of parts, wonder what’s e.g. Mouser basket ballpark for a unit. Counting parts, and estimating piece part cost, 35 euro each-ish? I grab most of the com...
by Jarno
Wed Oct 07, 2020 2:13 am
Forum: Music Tech DIY
Topic: ARP 4005-based transistor VCA chip
Replies: 5
Views: 211

Re: ARP 4005-based transistor VCA chip

Nice work, but these have pretty good Hfe already, right, according to the datasheet 250-ish. That is probably comparable to what was available at the time? Have you soldered these dual transistors before? I used to be able, but not anymore, so I reflow in a cheap grill oven nowadays, works fine. I ...
by Jarno
Tue Sep 08, 2020 9:07 am
Forum: Music Tech DIY
Topic: Circuitbenders.co.uk DrumBs Module
Replies: 3
Views: 189

Re: Circuitbenders.co.uk DrumBs Module

Hadn't heard of it, but seems like a nice project:
https://www.circuitbenders.co.uk/forsal ... rumBs.html

Also, just when I thought "Gaaaaaahhhhhh, wiring!" I noticed they have a pot-board, so yeah, all good. :D
by Jarno
Wed Aug 26, 2020 4:37 am
Forum: Music Tech DIY
Topic: Vernier drive knobs?
Replies: 15
Views: 292

Re: Vernier drive knobs?

Only available in a few resistance values though.. On HAM fleamarkets you sometimes come across them, often in low values.

Nevermind, I see now that Mouser has the newer (digital readout) models in quite a few (synth-relevant) values. Pretty good, 120 euros each :goo: .
by Jarno
Wed Aug 26, 2020 4:32 am
Forum: Music Tech DIY
Topic: SAMVÆR UNDER TILSÜN DING DONG and DING DONG XL speaker modules
Replies: 4
Views: 216

Re: SAMVÆR UNDER TILSÜN DING DONG and DING DONG XL speaker modules

Nice for on the go wiggling, do note that those amps are a significant load on the power supply, did you include a jack for an external supply? Might make sense, those cheap modules often run a single supply, and you can then use an old (and cheap) laptop supply for it. (we're using the same kitty l...
by Jarno
Mon Aug 24, 2020 12:39 pm
Forum: Music Tech DIY
Topic: Vernier drive knobs?
Replies: 15
Views: 292

Re: Vernier drive knobs?

I like ten turn pots with those counter dials myself, rather than a geared knob on a single turn pot, because I wonder how precise one can be with a single turn (well, 300 degrees) of rotation, a bit of slop here and there and you lose a bit of accuracy. The counter dials are now also available on A...
by Jarno
Sun Aug 23, 2020 4:24 am
Forum: General Gear
Topic: What about Zoom R16 as a mixer and audio interface?
Replies: 16
Views: 761

Re: What about Zoom R16 as a mixer and audio interface?

My monitor controller also has some gain, so I wouldn't know, I just crank that if I need more loudness. I do sometimes need an attenuator in my modular before sending it to the R16, and I very recently noticed some noise when I needed to add more gain to a smaller sound (but that noise could very w...
by Jarno
Thu Aug 13, 2020 2:41 am
Forum: Music Tech DIY
Topic: Making your own panels with a desktop CNC
Replies: 224
Views: 4093

Re: Making your own panels with a desktop CNC

I would keep the 6040 as is, and use it for routing. When you do want to go the laser route, there's a whole scene around the chinese made "k40" laser machines. About 350EUR for a 40W CO2 laser cutter, not surprisingly, they need work, but there's lots of information to be found on upgrades and twea...
by Jarno
Sun Jul 05, 2020 4:05 pm
Forum: Music Tech DIY
Topic: extreme Moog MG-1 Realistic Concertmate expansion/mod kits coming soon - and a request for opinions!
Replies: 15
Views: 1337

Re: extreme Moog MG-1 Realistic Concertmate expansion/mod kits coming soon - and a request for opinions!

Nice work!
But, we don't exactly trip over those synths over here in europe, how is this in the US? Are these synths easily available?
by Jarno
Wed Jul 01, 2020 1:39 pm
Forum: General Gear
Topic: What about Zoom R16 as a mixer and audio interface?
Replies: 16
Views: 761

Re: What about Zoom R16 as a mixer and audio interface?

Love mine to bits, recording dawless, allows me to focus on my modular and not using mouse. I have used it as an interface and control surface for reaper, but not often. Really wish it could record midi or sync on a separate track (often record a click a la moroder) No issues with mine, but yes inpu...
by Jarno
Tue Jun 23, 2020 7:03 am
Forum: Music Tech DIY
Topic: LARGE MFOS System
Replies: 45
Views: 1915

Re: LARGE MFOS System

I would chuck in a few Meanwell supplies, hefty ones for +12v and -12v, smaller one if you have stuff that runs on nine volts. Maybe make sure that all modules have good supply filtering (because the SMPS supplies are a bit noisier than linear ones). But yeah, those Meanwell supplies are really low ...
by Jarno
Mon Jun 22, 2020 3:32 pm
Forum: Music Tech DIY
Topic: 1-a-day synth wood work project
Replies: 20
Views: 1226

Re: 1-a-day synth wood work project

That is a very nice plank-o-wood. Gotta say though 1" thick is quite generous for a eurorack case, or is this going to be something else? You might be able to resaw it to 11mm or so, and then thickness it again, maybe that's going to be a bit thin, come to think of it.Or one thicker piece and one th...
by Jarno
Mon Mar 30, 2020 3:58 am
Forum: Music Tech DIY
Topic: Circuit Kludging, Ninja Level
Replies: 14
Views: 789

Re: Circuit Kludging, Ninja Level

That's not a kludge, that's a modular filter unit :)

(if you can't fix it, feature it)
by Jarno
Sat Mar 28, 2020 3:24 pm
Forum: Music Tech DIY
Topic: The 2020 Show Us Your DIY Builds Thread!
Replies: 423
Views: 35539

Re: The 2020 Show Us Your DIY Builds Thread!

Oh, I figured that's what you built, which circuit or pcb did you use?
by Jarno
Sat Mar 28, 2020 1:43 pm
Forum: Music Tech DIY
Topic: The 2020 Show Us Your DIY Builds Thread!
Replies: 423
Views: 35539

Re: The 2020 Show Us Your DIY Builds Thread!

forestcaver wrote:
Fri Mar 20, 2020 10:40 am
011-modular_ajh_asr.jpg012-modular_ajh_asr.jpg013-modular_ajh_vca1.jpg014-modular_ajh_vca1.jpg015-modular_ajh_phones.jpg016-modular_ajh_phones.jpg
I've been ogling those Kassutronics ASR envelope generators, what do you think of them?
by Jarno
Sun Mar 08, 2020 4:05 pm
Forum: Music Tech DIY
Topic: eurorack level distortion circuit?
Replies: 6
Views: 724

Re: eurorack level distortion circuit?

I made a board which has both a Woolly Mammoth-ish fuzz using PNP germanium, and opamp based distortion (tube screamer or MXR dist+). The fuzz end is powered a single power rail, so has similar headroom as a pedal, I used both eurorack power rails for the opamp based side (as in the ronnberg schemat...
by Jarno
Fri Mar 06, 2020 1:34 pm
Forum: Music Tech DIY
Topic: Countryman 968 6 way vactrol
Replies: 7
Views: 531

Re: Countryman 968 6 way vactrol

Edit: past tense probably, since, because of RoHS regulations, LDR's are hardly made anymore. They are still made and relatively easy to obtain: https://www.advancedphotonix.com/apx-products RoHS doesn't apply to everything, but has reduced the market. I wonder how that works, because RoHS includes...

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