Search found 2829 matches

by Synthbuilder
Wed Feb 26, 2020 7:10 am
Forum: Oakley Sound Systems
Topic: Filtrex works in series but not on mixer insert (solved)
Replies: 11
Views: 338

Re: Filtrex works in series but not on mixer insert (solved)

Hi Ben, Glad to hear you like the Filtrex and you're getting good use out of them. is there any benefit in connecting the ground to the grounds added to the PSUs for connecting the modular cases ? There is a benefit but whether it is audible is another thing. Ideally, all 0V points should be connect...
by Synthbuilder
Wed Feb 26, 2020 6:11 am
Forum: Tubbutec
Topic: Unipulse can't respond to fast triggering with active sensing.
Replies: 1
Views: 4

Re: Unipulse can't respond to fast triggering with active sensing.

Actually, just noticed this other thread which could be the same thing:

viewtopic.php?f=78&t=225723
by Synthbuilder
Wed Feb 26, 2020 6:10 am
Forum: Tubbutec
Topic: Unipulse can't respond to fast triggering with active sensing.
Replies: 1
Views: 4

Unipulse can't respond to fast triggering with active sensing.

My new Unipulse Mk3 doesn't always respond when triggers are sent in quick succession. This is perhaps related to active sensing. On controllers that use active sensing the Unipulse only responds to triggering every second or so. Without active sensing, eg. my computer's midi interface, the unit app...
by Synthbuilder
Mon Feb 24, 2020 11:57 am
Forum: Oakley Sound Systems
Topic: Issue with new build deep equinoxe
Replies: 5
Views: 62

Re: Issue with new build deep equinoxe

Can I ask, is it expected that audio in -> audio out when the unit is powered off? Ive not tried it but I would expect a small amount of signal to get through (called 'bleed') but not much. I would also expect the amount of bleed to be worse without the power lead in place. If the signal is the sam...
by Synthbuilder
Mon Feb 24, 2020 5:00 am
Forum: Oakley Sound Systems
Topic: Issue with new build deep equinoxe
Replies: 5
Views: 62

Re: Issue with new build deep equinoxe

My first thoughts are that this is a wiring problem between the main board and the sockets. It'll be worth double checking there is no issue there first. Also, if you are using the five way Synthesizers.com power header on any Oakley 5U module then you need to fit the MU power header into the PWR lo...
by Synthbuilder
Fri Feb 21, 2020 3:57 am
Forum: Music Tech DIY
Topic: Eurorack Power Link
Replies: 11
Views: 324

Re: Eurorack Power Link

Graham Hinton wrote:
Wed Feb 19, 2020 7:24 am
The contacts are also available with solder buckets so the only tool you might need is the extractor at about £15 from Farnell. Use tin contacts for power rather than gold. There are cheaper shells than the Ringlock too, if you don't need gigability.
Good to know. Thanks Graham.
by Synthbuilder
Wed Feb 19, 2020 5:25 am
Forum: 5U Format Modules
Topic: It shouldn´t sound, but...
Replies: 26
Views: 588

Re: It shouldn´t sound, but...

Personally, I'd have a power supply in each box. This simplifies the distribution and usually reduces any problems with unwanted return currents travelling down the screens of the patch cables.
by Synthbuilder
Wed Feb 19, 2020 5:19 am
Forum: Music Tech DIY
Topic: Eurorack Power Link
Replies: 11
Views: 324

Re: Eurorack Power Link

I use ITT-Trident connectors for small peripheral devices, with several contacts and wires in parallel and usually with one end captive to eliminate the resistance and cost of another contact pair... Beautiful work as always Graham. And those multiway Trident connectors look excellent. The price of...
by Synthbuilder
Tue Feb 18, 2020 9:29 am
Forum: Oakley Sound Systems
Topic: Filtrex works in series but not on mixer insert (solved)
Replies: 11
Views: 338

Re: Filtrex works in series but not on mixer insert (solved)

you should do a roland filtrex! I think the time for any such thing has passed now. The Oakley Sound Filtrex in its various guises has been around for over twenty years now. Sales were pretty slow in the later part of the production run. I don't think even an exciting new variant of the same thing ...
by Synthbuilder
Mon Feb 17, 2020 12:32 pm
Forum: Oakley Sound Systems
Topic: Filtrex works in series but not on mixer insert (solved)
Replies: 11
Views: 338

Re: Filtrex works in series but not on mixer insert

Paradigm X wrote:
Mon Feb 17, 2020 6:16 am
all fixed, thank you. i had pin 3 and 1 mixed up on the output. it now works fine on an insert.
Excellent news.

I like story with a happy ending. :tu:
by Synthbuilder
Mon Feb 17, 2020 4:38 am
Forum: Oakley Sound Systems
Topic: VCO Controller being naughty. (SOLVED).
Replies: 7
Views: 140

Re: VCO Controller being naughty.

C1 was 1nF instead of 100nF. :tu: It doesn't explain the gliding or scaling problem you had initially with the KCV1 output though. C1 only really affects the speed of the LFO. You probably sorted those things out by the various other bits of work you did on the module. But welcome to the sometimes ...
by Synthbuilder
Sun Feb 16, 2020 11:05 am
Forum: Music Tech DIY
Topic: Eurorack Power Link
Replies: 11
Views: 324

Re: Eurorack Power Link

This is a mains connector and should not be used for any other purpose. It may be used to connect switched mains though. Understood. I didn't even know they were limiting their official use to that. Definitely makes sense though, wouldn't want to mix low voltage DC with high voltage AC. Aside from ...
by Synthbuilder
Sun Feb 16, 2020 4:47 am
Forum: Music Tech DIY
Topic: Eurorack Power Link
Replies: 11
Views: 324

Re: Eurorack Power Link

You want the biggest and most rugged connector that will fit. Avoid using small signal audio connectors. You need to keep the resistance of all connections as small as possible and that means big chunky wires. If you don't, you'll have unwanted interactions between modules. https://www.neutrik.com/e...
by Synthbuilder
Sun Feb 16, 2020 4:36 am
Forum: Oakley Sound Systems
Topic: VCO Controller being naughty. (SOLVED).
Replies: 7
Views: 140

Re: VCO Controller being naughty.

Pins 5, 6 and 7 should be connected together when nothing is plugged into the CV IN socket. All three pins should be carrying a sine wave from the LFO. When you plug something into CV IN then the LFO sine wave is disconnected from pin 6, and whatever you've plugged in to the CV IN should now be seen...
by Synthbuilder
Sat Feb 15, 2020 10:58 am
Forum: Oakley Sound Systems
Topic: VCO Controller being naughty. (SOLVED).
Replies: 7
Views: 140

Re: VCO Controller being naughty.

Does the second CV channel work, or does it do the same as CV1?

Does everything work with the VCO Controller module powered up but not used?
by Synthbuilder
Sat Feb 15, 2020 6:14 am
Forum: Oakley Sound Systems
Topic: VCO Controller being naughty. (SOLVED).
Replies: 7
Views: 140

Re: VCO Controller being naughty.

Built in LFO runs from about 10Hz to 6kHz instead of very slow to about 50Hz R18 could be the wrong value. It should be 100K. Can't trim scale of CV1, pitch seems to glide upwards on its own, weirdly. That sounds like a poor solder joint somewhere. Possibly pin 3 on U2, or maybe the pins on R10. Oc...
by Synthbuilder
Fri Feb 14, 2020 12:38 pm
Forum: Oakley Sound Systems
Topic: New Oakley rack module: ADR30
Replies: 37
Views: 4400

Re: New Oakley rack module: ADR30

... my Hill audio mixer is +4dB line out... will a DI be needed so I don’t murder the input, or just some very low input gain. Also in either case would the instrument be the better choice as it is in between mic and line level? You should connect the aux out from your desk direct to the instrument...
by Synthbuilder
Fri Feb 14, 2020 4:18 am
Forum: Oakley Sound Systems
Topic: Non-metal panels
Replies: 1
Views: 80

Re: Non-metal panels

Metal panels and cases which are grounded either directly or via the audio connecting leads offer more protection against unwanted interference from other equipment. Putting a module in a non conductive case or panel will never be quieter in terms of noise and interference. However, the amount of in...
by Synthbuilder
Wed Feb 12, 2020 9:23 am
Forum: 5U Format Modules
Topic: Patch cables. To DIY or just buy?
Replies: 25
Views: 1186

Re: Patch cables. To DIY or just buy?

Can anybody recommend what jack plugs and "wonderfully rubbery cable" to use. After a lot of looking for ready made patch cables I think the best way is to build myself. The plugs I use are by Neutrik - although they are from the old Rean range: https://www.rapidonline.com/neutrik-ag-nys201-6-35mm-...
by Synthbuilder
Wed Feb 12, 2020 3:34 am
Forum: Oakley Sound Systems
Topic: Euro Envelope build feedback
Replies: 3
Views: 94

Re: Euro Envelope build feedback

Pav wrote:
Tue Feb 11, 2020 2:24 pm
do not see +12V power at the multicomp connectors of the main board. Its there on the power header.
Check the soldering on R29. And that R29 is 22R.

I see this is another schematic where I have left +/-15V. I think I'll have to update that one along with the sequencer.

Tony
by Synthbuilder
Mon Feb 10, 2020 11:47 am
Forum: 5U Format Modules
Topic: The Moon modular M506
Replies: 12
Views: 381

Re: The Moon modular M506

Just a small correction if I may. The JP-8 (and JP-4, SH-101, Juno-6, SH-1, SH-2, SH-09, 100M, JX-3p and others) filter is a cascaded OTA filter. Four identical OTA low pass sections cascaded together to create a one 24db/octave low pass filter. Resonance is applied from the final output back to the...
by Synthbuilder
Mon Feb 10, 2020 7:11 am
Forum: Oakley Sound Systems
Topic: Euro Sequencer - TL074CDR selection
Replies: 1
Views: 71

Re: Euro Sequencer - TL074CDR selection

I assume either a TL074CDR or TL074CDRG4 is ok to use? I think they're the same part. It's probably just the packaging that they come in is different. It may also be due to differences between National Semiconductor and Texas Instruments parts. They're now the same company, TI, but some legacy nami...
by Synthbuilder
Sat Feb 08, 2020 10:01 am
Forum: Oakley Sound Systems
Topic: new Euro Cota VCF - build debug time [solved]
Replies: 4
Views: 120

Re: new Euro Cota VCF - build debug solved

Is it correct it only works with soft clip on? It only gets a brief mention in setup. Maybe build guide should say a little more about Asymmetry as it is not a feature of 5U COTA... Yes, the asymmetry control only works with soft clip engaged. It has no effect in the clean mode. Normally this sort ...
by Synthbuilder
Fri Feb 07, 2020 11:56 am
Forum: Oakley Sound Systems
Topic: The ASV is AWESOME (Was: ASV filter problem)
Replies: 69
Views: 4009

Re: The ASV is AWESOME (Was: ASV filter problem)

Yeah I looked at that one, it’s a wima 680. Probably OK then. What does the VCO 1 to VCA triangle wave sound like? This bypasses the filter entirely and goes direct from the VCO to the VCA circuitry. Turn down all the other waveforms going into the filter and listen only to the triangle wave. Do yo...
by Synthbuilder
Fri Feb 07, 2020 5:24 am
Forum: Oakley Sound Systems
Topic: Power woes/SVCO
Replies: 23
Views: 535

Re: Power woes/SVCO

Awesome, thanks. Sorry didnt mean to second guess you just making sure i explained the problem as best i could. The CV does seem to produce a smooth crackle free 'morph' from saw to tri and PWM on the square. No need to apologise. It's not easy to fault find via the medium of forum posts or e-mails...

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