Search found 1360 matches

by LektroiD
Sat Jul 11, 2020 6:52 am
Forum: Music Tech DIY
Topic: Timo Rozendal Steiner Parker filter, help needed
Replies: 3
Views: 151

Re: Timo Rozendal Steiner Parker filter, help needed

NeolithicElectrophones wrote:
Fri Jul 10, 2020 3:51 pm
The square pad is negative on these so electrolytic caps look good. Pinout looks correct on transistor pair. The right header connection looks like it might have a short between the bottom two pins.
It was indeed a short on the header. Well spotted, thank you!

Great sounding filter!
by LektroiD
Fri Jul 10, 2020 3:21 pm
Forum: Music Tech DIY
Topic: Timo Rozendal Steiner Parker filter, help needed
Replies: 3
Views: 151

Timo Rozendal Steiner Parker filter, help needed

Hi, I have finished building the Steiner Parker filter by Timo Rozendal. It passes audio, but I cannot seem to make it do anything not from the panel pots or the trimmers - ie. the filter is fixed fully open. Resonance appears to go into self oscillation when turned fully clockwise, but it's hard to...
by LektroiD
Thu Jul 09, 2020 11:59 am
Forum: Music Tech DIY
Topic: Coloured panels on DIY modules...
Replies: 11
Views: 455

Coloured panels on DIY modules...

One of the things I love about DIY is the aesthetics of the final system. So far I've built an all silver system, an all black system, and after building Timo Rozendal's red Steiner Filter, I now want to branch out to building a load of different coloured modules. Looking for single colour per panel...
by LektroiD
Tue Jul 07, 2020 11:44 am
Forum: Music Tech DIY
Topic: DX-style Operator (Thru-Zero FM/PM oscillator - FM Ogre)
Replies: 788
Views: 72984

Re: DX-style Operator (Thru-Zero FM/PM oscillator - FM Ogre)

I am building another FM ogre. I wonder if anyone knows where I can source the FM processor chip? I think I got the last one with the PCB/panel set. Thanks in advance...
by LektroiD
Tue Apr 07, 2020 3:04 am
Forum: Music Tech DIY
Topic: Neutron sound Dust of Time.
Replies: 250
Views: 15478

Re: Neutron sound Dust of Time.

Where can I order this? I'd like a PCB/black panel if possible?
by LektroiD
Tue Apr 07, 2020 2:36 am
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

Re: a legend is back...System-700 in eurorack

It's been crickets since I sent them hundreds of dollars in October to pre-order two of these sequencers. The announced mid-November ship date came and went nearly a half year ago now. There have been no updates from Pharmasonic about it that I've seen (and I've been looking!), although they seem t...
by LektroiD
Fri Jan 24, 2020 6:59 pm
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

Re: a legend is back...System-700 in eurorack

gslug wrote:
Fri Jan 10, 2020 5:20 am
Bukake2Fuzz wrote:
Mon Jan 06, 2020 1:35 am
Yes , thank you, i was asking for those who pre order back in october like me...
End of this month hopefully. I asked Pharmasonic.
Soon then... Great news!
by LektroiD
Fri Jan 24, 2020 6:59 pm
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

Re: a legend is back...System-700 in eurorack

Double post, but can't find the delete function
by LektroiD
Sat Dec 14, 2019 8:51 pm
Forum: General Gear
Topic: What year did Korg change the MS20 filter?
Replies: 0
Views: 858

What year did Korg change the MS20 filter?

I recently saw an advert for a 1978 MS20 with the OTA filter. I'm sure it was a mistake, but got me thinking, what year did Korg change the MS20 filter? I have an MS10 and MS20, both with Korg 35 filters, they also have dark grey panels rather than the black on the later models. Did they change the ...
by LektroiD
Sat Nov 23, 2019 12:25 am
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

Modulart_JP wrote:The new 715 PCB's and panels are here.
I just need to make sure they are OK.
If so, the 715 Multimode Filters will be available next week.
Any news?
by LektroiD
Mon Nov 04, 2019 12:49 pm
Forum: Music Tech DIY
Topic: Case Wiring, two Meanwell RT-65B
Replies: 42
Views: 7173

I'm running two PSU's in my system. When it comes to wiring your modules, separate oscillators and filters to one PSU, and LFO's & modulation sources to the other... You'll save yourself the headache of LFO / modulation pulldown on your oscillators & filters.
by LektroiD
Tue Oct 29, 2019 1:03 am
Forum: Music Tech DIY
Topic: +15/-15V 3A power supply?
Replies: 7
Views: 951

"modulars" is a loose term, specify... If you're powering a 5U MOTM system with +/-15VDC then it's fine, put it into a eurorack which expects +12/-12/+5VDC and you would run into problems, potentially damaging modules by overpowering. Specify which system you're looking to power. The chart at the bo...
by LektroiD
Sat Oct 26, 2019 6:10 am
Forum: Music Tech DIY
Topic: Desoldering braid that doesn’t suck
Replies: 24
Views: 874

I was using the multicore braid for a long time, which was rather expensive as average braid goes. A few years ago I was on the electronics market in Bangkok and discovered the Japanese 'GootWick' braid, which comes in many widths and lengths. This stuff is ace, and was very reasonably priced (as al...
by LektroiD
Fri Oct 25, 2019 5:35 pm
Forum: Music Tech DIY
Topic: Red display for Braids?
Replies: 2
Views: 402

Works fine, I've built a couple with red displays
by LektroiD
Sat Oct 19, 2019 1:50 pm
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

Yes, I'm alive... I had to rework the 715 Multimode Filters because although it was working I didn't like the layout. I should have the new PCB's and panels next week. That 715 is an instant buy the moment it goes up for sale. Availability of obsolete chips is the reason I won't make a clone of the...
by LektroiD
Thu Oct 17, 2019 11:18 am
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

see post from 24 September: - 715 Multimode Filters (available by the end of this week) I was wondering if Ori was ok after this announcement, followed by the radio silence, so I emailed him asking how he is. He replied saying that he is fine, just extremely busy. The good news is that he's ok, we ...
by LektroiD
Sat Oct 12, 2019 5:55 am
Forum: Music Tech DIY
Topic: Calibrating my Pharmasonic 702 VCO's
Replies: 5
Views: 426

your switch most likely has a bad internal connection, or there is a bad solder joint to the resistor chain at that point. measure the voltage at each point along the switch contacts. if the 8' contact is 0V at the switch, then there is a bad solder joint or broken trace. if its 2V, then there is a...
by LektroiD
Thu Oct 03, 2019 11:21 pm
Forum: Music Tech DIY
Topic: Soma - LYRA-8 DIY Kit
Replies: 725
Views: 72699

tron23 wrote:
Ceramic Pasty wrote:Any word on the DIY PCBs dropping again? I emailed a while back and haven't heard anything.
+1 would love to know as well :guinness:
+2... I missed it the first time around, was really hoping for a second run of the Lyra 8
by LektroiD
Mon Sep 30, 2019 3:15 pm
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

I was looking at the manual and reading through the various modules, the Frequency to Voltage feature on the 714 looks interesting. Is this something that's likely to be looked at? Great on paper, not so great in real life... Also there is a two-channel phaser (720B) with a lot of really nice featu...
by LektroiD
Sat Sep 28, 2019 5:12 pm
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

wendallsan wrote:Just saw the 717 appear on your site and Modular Grid. Looks amazing!

:hail: :hail:

And still 12 steps!
I wish I would see the 721 Audio Delay appear... Wishful thinking :hihi:
by LektroiD
Sat Sep 28, 2019 2:04 am
Forum: Music Tech DIY
Topic: Potentiometers with center tap, where buy?
Replies: 12
Views: 989

Needed a 1k centre tap pot for amdek pck percussion synth, for to sweep pitch up/down. Ebay seller in uk still sells centre detent pots and I used this scheme with resistors . Works as expected for my purposes. I think I used 1 k pot, awkward access to double check , but I have 2 1k resistors insta...
by LektroiD
Thu Sep 26, 2019 3:52 pm
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

So far, what did you do to troubleshoot it ? Nothing, other than checking over component values. Which waveform is best to use to check frequency? It doesn't say which waveform output to use in the calibration procedure. Also, what are the test points for, I have added test point terminals, but the...
by LektroiD
Mon Sep 23, 2019 1:10 pm
Forum: Music Tech DIY
Topic: New project from Psyco X [XDS3]
Replies: 45
Views: 5056

Looks awesome!

Will you have a panel/PCB only option, or will we have to buy the full kit?

Just that having a huge collection of components in stock, I always avoid full kits.
by LektroiD
Mon Sep 23, 2019 8:06 am
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

Hi, I'm having a bit of difficulty with the 702 oscillator (so far I have built only one as I'm awaiting LM301s to arrive). Firstly, the pitch is about an octave and a half too low, and I cannot calibrate it any higher, even when I set the range to 4 instead of 8, I still cannot get it to reach 440H...
by LektroiD
Mon Sep 23, 2019 12:11 am
Forum: Music Tech DIY
Topic: a legend is back...System-700 in eurorack
Replies: 159
Views: 17793

I have my scope set to 50mV and all pots fully CCW. Set your scope to 5mV. Frankly speaking, it does not make a difference and I kept those trimmers for each pole to be thorough, stay true to the original schematics. The truth is that many filters in other Roland synths have a similar filter and th...

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