Search found 186 matches

by Broadwave
Sat Sep 09, 2017 1:48 am
Forum: Music Tech DIY
Topic: No love for the Axoloti DSP Board?
Replies: 190
Views: 25802

I've built mine into the Code 61 - Loads of instantly editable functions off the bat :bananaguitar:

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by Broadwave
Wed Aug 16, 2017 6:13 am
Forum: Music Tech DIY
Topic: Where to Get Custom Drill + Screenprinted Metal Faceplates?
Replies: 11
Views: 922

Im currently setting up for silk screen. Depending on run size, this will give better pricing than metal photo but also give all the luxuaries of a printed finish (large blocks of colour, more colours than other processes, etc.) That's great - I know where to go now :tu: You can't beat a good quali...
by Broadwave
Tue Aug 15, 2017 12:37 am
Forum: Music Tech DIY
Topic: Where to Get Custom Drill + Screenprinted Metal Faceplates?
Replies: 11
Views: 922

Front Panel Express is ok, but the digital colour print is a little bit on the rough side close up.

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by Broadwave
Fri Mar 17, 2017 2:46 am
Forum: Music Tech DIY
Topic: System X Oscillator Temp Co Issues
Replies: 27
Views: 800

What vintage is your sys x vco? The first release was known to detune as the internal case temperature rose. If you have a filled up case then that may be (at least partly) the cause. The revised version has a temperature compensation piggyback board to counteract this. Well remembered, I'd complet...
by Broadwave
Fri Mar 10, 2017 3:31 am
Forum: Music Tech DIY
Topic: ARP 3620 clone project
Replies: 450
Views: 44361

Two of them mounted side by side are 12mm wide, so just enough to fit under the keys of most keybeds, which will give you the required 2 pole switching. hmm if you mounted the first one of each pair with a small spacer to lift it a little off the board that will give you the small delay till the se...
by Broadwave
Thu Mar 09, 2017 2:46 am
Forum: Music Tech DIY
Topic: ARP 3620 clone project
Replies: 450
Views: 44361

Regarding double pole switches for the keybed. I've just received 100 miniature single pole lever switches from ebay (£3.54 - no that's not a mistake in the price!) - They are 12 x 13 x 6mm, with 0.1 pitch for the contacts - perfect for mounting onto stripboard. You can get them from here Two of the...
by Broadwave
Sun Feb 19, 2017 2:58 am
Forum: Music Tech DIY
Topic: Cheap DIY passive busboard PCBs?
Replies: 6
Views: 549

Stripboard works perfectly, and it's very, very cheap.

https://www.rapidonline.com/rapid-strip ... mm-34-0540

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by Broadwave
Wed Feb 01, 2017 3:33 am
Forum: Music Tech DIY
Topic: Maplin 5600 : replacing transformer with PA20/30
Replies: 8
Views: 302

I presume the Yamaha PA20 is 0.97A per coil - I don't know for sure. But if it *is* then it should be fine as a direct power source. It appears to be the same as my old Alesis Multimix 16FW PSU (18-0-18, 1A per secondary coil) Is there any reason to have an external transformer? It seems like a very...
by Broadwave
Tue Jan 31, 2017 5:37 am
Forum: Music Tech DIY
Topic: Sparta Synthesizer - Expanded ARP Odyssey
Replies: 39
Views: 3316

Finally... Properly completed. 7 week build, which is pretty fast for me. Leather side panels on, rear I/O panel sorted (although due to a silly mistake I made in the artwork, it's white not, anodised - I'll get it re-done at a later date). Calibrated, re-calibrated & re-re-calibrated. It's all beha...
by Broadwave
Fri Jan 27, 2017 2:43 am
Forum: Modular Synth General Discussion
Topic: Reaktor Blocks and the future of modular synthesis...
Replies: 52
Views: 4881

I love Reaktor, and it's not all about Blocks. Once you get into building your own setups, there's no going back.

Integrating Reaktor with modular hardware via DC control is definitely the way to go.
by Broadwave
Tue Jan 10, 2017 4:30 am
Forum: Music Tech DIY
Topic: MEAN WELL IRM-10-5 5V for additional USB Power?
Replies: 2
Views: 206

MEAN WELL IRM-10-5 5V for additional USB Power?

I need to add a small 5V PSU to power a CME Xkey 37 in my current project (and also to supply an external 5V to power an Arturia KeyStep) The MEAN WELL IRM-10-5 5V (2A Max) module seems to be what I'm looking for, but do I need to add any additional AC/DC - Pre/Post filtering, or do you think I can ...
by Broadwave
Mon Jan 09, 2017 12:46 pm
Forum: Modular Synth General Discussion
Topic: How ARP2600 are today's replicas of ARP2600
Replies: 22
Views: 2986

Can i consider this Module as 6 different Modules fully, as in, i can use each Module independently as any other Module on my Rack as 1 VCO, 1 VCF, 1 LFO, 2 ADSR and the VCA? What i mean is is there any limitations on them to this kind of thinking and approach or each one is also 100% fully indepen...
by Broadwave
Sat Jan 07, 2017 2:39 am
Forum: Music Tech DIY
Topic: Sparta Synthesizer - Expanded ARP Odyssey
Replies: 39
Views: 3316

Finished - I was concerned about crosstalk from all the patch point wiring, but it sounds remarkably clean. I still have a little bleed from the noise generator which I just can't get rid of (but it's no worse than an original Odyssey or 2600). I did manage to blow a couple of SSM2024s along the way...
by Broadwave
Wed Jan 04, 2017 6:40 am
Forum: Music Tech DIY
Topic: Has Anyone Else: Developed face rashes from solder smoke?
Replies: 28
Views: 1831

My nose used to be the first thing to suffer - Clogged pores, red painful spots. I also had a serious problem with Chalazions (cysts on the eyelids) which required surgery! Seriously - Don't risk it. Invest in an extractor or at the very least a small USB desktop fan to blow the fumes away from your...
by Broadwave
Fri Dec 23, 2016 11:02 am
Forum: Modular Synth General Discussion
Topic: TTSH - oscillator output is also an input?
Replies: 3
Views: 482

You're just joining the outputs together (passive mixing without resistors), so there's no actual "input".

You can get some wildly distorted sounds by doing this.
by Broadwave
Tue Dec 20, 2016 11:27 pm
Forum: Music Tech DIY
Topic: Diode suggestions for noise source.
Replies: 8
Views: 887

In general, any zener diode above 6V should produce a decent amount of noise. Here's the factory suggested modification to the ARP Odyssey noise generator: I use the Oddy noise for all the synths I build. The Zener mod has a nice consistent output - works off the bat without spending time trying to...
by Broadwave
Tue Dec 20, 2016 5:17 am
Forum: Music Tech DIY
Topic: Sparta Synthesizer - Expanded ARP Odyssey
Replies: 39
Views: 3316

Hey Broadwave , could you please tell me what software you used to draw your PCB art? It looks a lot like the ones I do on Excel (but I doubt anyone else is crazy enough to actually use Excel). I use Autodesk Graphic (OSX only, I'm afraid) - But any Vector Drawing package will do the same job, and ...
by Broadwave
Mon Dec 19, 2016 8:14 am
Forum: Music Tech DIY
Topic: Sparta Synthesizer - Expanded ARP Odyssey
Replies: 39
Views: 3316

Agghhh :bang: The knobs have finally arrived... Yup, they're the wrong size - 21mm not 16 as I ordered, and to add insult to injury, I've just noticed that all the 1M Log pots have a slightly larger shaft from all the others, so they don't fit :doh: New pots have been ordered - I tried drilling out ...
by Broadwave
Sun Dec 18, 2016 8:15 am
Forum: Music Tech DIY
Topic: HELP - Modulation DC offset problem :(
Replies: 3
Views: 165

Thanks for the pointers - After several attempts to correct the problem, I realised it was just a simple case of grounding the FM inputs to VCO1&3 when switched to VCO2 only - Luckily my build uses DPDT sliders, so one side of the switch was spare ;)
by Broadwave
Sat Dec 17, 2016 5:16 am
Forum: Music Tech DIY
Topic: HELP - Modulation DC offset problem :(
Replies: 3
Views: 165

HELP - Modulation DC offset problem :(

I've almost finished my DIY synth build, but I have a problem with the aftertouch modulation. The 2024 VCAs work a treat - As you can see, I need to switch the AT Mod output between all VCOs or just VCO2. When all 3 VCOs are selected, there's no problem - it all works as intended. However, when I sw...
by Broadwave
Thu Dec 15, 2016 10:16 am
Forum: Music Tech DIY
Topic: Sparta Synthesizer - Expanded ARP Odyssey
Replies: 39
Views: 3316

The folded chassis has just arrived. I've just got to finish up the Mod/Aftertouch routing and that'll be the electronics done, then I can get on with final wiring (MIDI>CV/Back panel I/Os) and the end caps. It's sounding pretty good so far ;) https://c7.staticflickr.com/1/128/31515700502_ab33ab3b79...
by Broadwave
Thu Dec 15, 2016 2:23 am
Forum: Music Tech DIY
Topic: Sparta Synthesizer - Expanded ARP Odyssey
Replies: 39
Views: 3316

Thx for all the comments - I'll get a demo vid up ASAP. I'm just trying to sort out a problem with the Mod/Aftertouch routing at the moment - It's not as easy as I thought it would be :bang: @Stringsthings - I'll probably upload all the documentation once it's all built, but I won't be making a kit ...
by Broadwave
Wed Dec 14, 2016 1:39 am
Forum: Music Tech DIY
Topic: Euro Power Distribution
Replies: 15
Views: 876

Euro Power Distribution

I need to tidy up the wiring in my modular - Most of the mess comes from the power distribution ribbon cables. I'm thinking of changing to using a single ribbon cable with multiple IDC connectors to daisy chain the modules, but I was always told NEVER to do that, as the power should come from one ce...
by Broadwave
Tue Dec 13, 2016 3:12 am
Forum: Music Tech DIY
Topic: Sparta Synthesizer - Expanded ARP Odyssey
Replies: 39
Views: 3316

Good job! :tu: I hate to point this out, but I think the Sig Level and FM Level text on the VCF have been mixed up... Hopefully I'm wrong. No, you're not - The other mistake is the patch point text for "ADSR2" - it should be "AR" I didn't realize until after the panel arrived :doh: But it's not wor...
by Broadwave
Tue Dec 13, 2016 2:43 am
Forum: Music Tech DIY
Topic: Sparta Synthesizer - Expanded ARP Odyssey
Replies: 39
Views: 3316

Sparta Synthesizer - Expanded ARP Odyssey

I've been off DIY for a while now, due to health issues, but a month ago I heard the call, and started a new DIY build. It's based almost entirely on Odyssey circuits, but with rotary controllers (After building the 2600 clone, I vowed never to use sliders again!). The simplest description I can giv...

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