Search found 3190 matches

by Graham Hinton
Thu Jul 02, 2020 3:24 pm
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

None of these source synthesizers have balanced line outputs. Why? Is there no need due to the nature of their signals or is it just a practice that has never been considered important in the keyboard and modular synth world? That perception changes over time. In the '70s ARP put an XLR on the back...
by Graham Hinton
Thu Jul 02, 2020 7:12 am
Forum: Eurorack Modules
Topic: Noob question: Rack width vs Module width?
Replies: 10
Views: 514

Re: Noob question: Rack width vs Module width?

But I do find it strange that they sell themselves short by not advertising the actual specs. They are not. The spec is the number of HP units and that includes a tolerance and a clearance. It is only the rack space that is 5.08mm per HP, NOT the panel. The panel should (some "manufacturers" don't ...
by Graham Hinton
Mon Jun 29, 2020 6:35 am
Forum: Eurorack Modules
Topic: EMS Synthi modules
Replies: 23
Views: 879

Re: EMS Synthi modules

To clear things up, the early 4 pole filter is supposed to yield 18db. This is not an error or super unusual afaik. It also has a slew on the incoming vc that Analogue Systems lets you switch in and out to simulate the early design. The later design is 5 poles, effectively 24db and no slew (AS lets...
by Graham Hinton
Sun Jun 28, 2020 10:19 am
Forum: Artist Discussion
Topic: Peter Gabriel...
Replies: 43
Views: 927

Re: Peter Gabriel...

cretaceousear wrote:
Sun Jun 28, 2020 5:58 am
II'd been led to believe Solsbury Hill is about Silbury HIll, but a Google says no -
Solsbury Hill is close to Peter Gabriel's old studio (before the Real World was built)

Google maps
by Graham Hinton
Sun Jun 28, 2020 6:28 am
Forum: Music Tech DIY
Topic: Simple gate circuit?
Replies: 6
Views: 164

Re: Simple gate circuit?

I've been dreaming of making a gate machine box to have some external control over modules. Specifically what I'm thinking of is having , say, 8 inputs/outputs with a simple on/off switch between them to feed sequences thru/turn off at will, but also wired up to each output a push button (arcade ma...
by Graham Hinton
Sat Jun 27, 2020 9:32 am
Forum: Music Tech DIY
Topic: Explanation of how modules "putting noise on the ground" bus?
Replies: 18
Views: 472

Re: Explanation of how modules "putting noise on the ground" bus?

If it's required on the module, Eurorack 16 pin and Dotcom 6 pin MTA connectors provide for +5V. They are not widely used and don't solve the problem, they just inject current from the digital circuitry into the existing 0V. Whether you have a digital power rail or locally regulate the positive ana...
by Graham Hinton
Sat Jun 27, 2020 7:03 am
Forum: Eurorack Modules
Topic: Doepfer PSU3 and Busboard connected the right way?
Replies: 6
Views: 106

Re: Doepfer PSU3 and Busboard connected the right way?

On the busboard are two parts where you can connect the cables coming from the PSU. The tech guy has connected both parts of the busboard with the PSU. Is that correct? I'm afraid that the busboard now gets too much power and I don't want to blow up any modules. That's fine, it will reduce the volt...
by Graham Hinton
Sat Jun 27, 2020 6:50 am
Forum: Music Tech DIY
Topic: Explanation of how modules "putting noise on the ground" bus?
Replies: 18
Views: 472

Re: Explanation of how modules "putting noise on the ground" bus?

That should have included "except for connecting AGND and DGND at the PSU". No. That only works for a small self powered device, like a 19" FX unit or outboard, where the distances involved are a few inches. It cannot be implemented over a large modular system without creating more problems and it ...
by Graham Hinton
Fri Jun 26, 2020 5:04 pm
Forum: Music Tech DIY
Topic: Explanation of how modules "putting noise on the ground" bus?
Replies: 18
Views: 472

Re: Explanation of how modules "putting noise on the ground" bus?

My $0.02: Ensure that the analog ground, digital ground and chassis are completely separate, (p. 63 of Troubleshooting Analog Circuits by Robert A. Pease, Newnes, 1991 ) and avoid ground loops, (p. 103). However non-banana patch cables are gratuitous ground loops. While I have much admiration for B...
by Graham Hinton
Fri Jun 26, 2020 10:37 am
Forum: Music Tech DIY
Topic: Explanation of how modules "putting noise on the ground" bus?
Replies: 18
Views: 472

Re: Explanation of how modules "putting noise on the ground" bus?

I think I understand and I am probably just repeating what you are saying but: because the +ve is (at a given moment) moving more current to 0v than the -12v is pulling out of the 0v, there will be a current through the 0v back to the mains through the power-supply which changes the electrical pote...
by Graham Hinton
Fri Jun 26, 2020 8:01 am
Forum: Music Tech DIY
Topic: 3.5mm TRS to DinSync wiring?
Replies: 5
Views: 130

Re: 3.5mm TRS to DinSync wiring?

The keystep (which is what I plan on using for converting MIDI to DinSync) only has a single (3.5mm) input for Sync OUT, so I don't understand how that would be the case. It is not a full implementation, you won't be able to Continue. I expect that receiving MIDI Continue may do a hard Start or it ...
by Graham Hinton
Fri Jun 26, 2020 7:44 am
Forum: Music Tech DIY
Topic: Select Bus
Replies: 40
Views: 1757

Re: Select Bus

Surely you meant vestigial? Yes I did! Sorry, too late and wrong word association stuck in my head. As for the CV/gate bus,I have found it easy to grasp and useful for its originally intended task. Its major failing is not its own, but rather the modules which did not implement some way of disablin...
by Graham Hinton
Fri Jun 26, 2020 7:19 am
Forum: Music Tech DIY
Topic: Explanation of how modules "putting noise on the ground" bus?
Replies: 18
Views: 472

Re: Explanation of how modules "putting noise on the ground" bus?

Although I am probably going to buy a linear supply anyway as this seems to be the easiest way to maybe avoid some of these problems, I was hoping that someone can point me to articles or shed more light on this issue so that I can might ... (1) be able to understand ways to troubleshoot these issu...
by Graham Hinton
Thu Jun 25, 2020 10:22 am
Forum: Music Tech DIY
Topic: Select Bus
Replies: 40
Views: 1757

Re: Select Bus

That's cool you have an old style ID! I was in at the beginning :) Yes once as a SysEx might as well do it all in that The channel # is always the same so not sure why there needs to be a condition there..unless you mean internally If we are going to use proper MIDI it would be an advantage to use ...
by Graham Hinton
Wed Jun 24, 2020 6:44 pm
Forum: Music Tech DIY
Topic: 3.5mm TRS to DinSync wiring?
Replies: 5
Views: 130

Re: 3.5mm TRS to DinSync wiring?

I'm trying to make a TRS to DinSync (Sync24) cable and I can't find anything about the correct wiring for such a cable. DIN Sync uses three signals with an optional fourth. If you wire it on to a TRS plug you will only be able to start/stop and not be able to continue from a pause. It is more usual...
by Graham Hinton
Wed Jun 24, 2020 3:27 pm
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

Like I said before Graham, I’m NOT trying to change your opinion at all. You’re entitled to it. And you are entitled to yours, but don't try to imply that all opinions are equal and it's only a matter of opinion. I’m just giving the OP another perspective. No, you've stumbled into a thread trying t...
by Graham Hinton
Wed Jun 24, 2020 10:00 am
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

The cables in both the TRS and XLR config’s were made not by me but made custom. They were made from balanced cable and the shield was left disconnected on the TRS and XLR end for all the cables. Then I'm not surprised they didn't solve your problem. The shield should be connected both ends first a...
by Graham Hinton
Wed Jun 24, 2020 5:59 am
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

Indeed I did. Both TS to TRS and TS to XLR. Noise was still there. Post-getting the nw2s, noise was gone :tu: Did you make the cables yourself with balanced cable or did you buy cables? Unbalanced cable would not help. What sort of noise? TRS or XLR suggests that you are trying both mic and line in...
by Graham Hinton
Tue Jun 23, 2020 6:21 pm
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

I used to get a lot of noise when I ran a signal directly out of my modular to my mixer, but once I got a output module, it solved this problem. It cost me I think $400. At that time, tackling a complete re-configuration of my power supply would definitely have cost a lot more than that. Buying tra...
by Graham Hinton
Tue Jun 23, 2020 4:31 pm
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

Also, not everyone has the money to address this balancing issue at the source (i.e. Eurorack power). With that in mind, balanced output modules in the Eurorack world offer a nice alternative for those who are not willing to tear down their entire system to rebuild their power from the ground up (n...
by Graham Hinton
Tue Jun 23, 2020 2:58 pm
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

I bought the ProCo IT4a based solely on "hope". (I know, never a good idea!) Here is the spec - ProCo IT4A specsheet Opinions welcome. That's fine, it will handle signals higher than most synths. That's what you have to pay to get high level line transformers and why it's worth trying just a cable ...
by Graham Hinton
Tue Jun 23, 2020 11:54 am
Forum: Music Tech DIY
Topic: Select Bus
Replies: 40
Views: 1757

Re: Select Bus

Sure, what do you think would comprise a good SB SysEx? Implementing it in a way that other modules aren't confused by it may be a trick. Those not adopting the new standard (not open source) would be out of the loop I have a SysEx ID (old style single byte) so I can define whatever is needed and i...
by Graham Hinton
Tue Jun 23, 2020 10:16 am
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

The SiX has had universally positive reviews including from award-winning journalists with decades of practical experience in all areas of audio enginneering and production, most notably Hugh Robjohns of Sound On Sound who noted it matched its pedigree in terms of 'technical performance, features a...
by Graham Hinton
Tue Jun 23, 2020 8:27 am
Forum: Modular Synth General Discussion
Topic: Synthesizers, mixers (SSL SIX), balanced/unbalanced
Replies: 57
Views: 1186

Re: Synthesizers, mixers (SSL SIX), balanced/unbalanced

For routing in the opposite direction from the mixer/interface to eurorack (balanced -> unbalanced), I just ordered a Pro Co IT4A 4 Channel Isolation Transformer Unit from B&H. What criteria did you use to select this? I can't see any spec on it, most importantly the maximum signal level. You can c...
by Graham Hinton
Mon Jun 22, 2020 10:32 am
Forum: Music Tech DIY
Topic: Select Bus
Replies: 40
Views: 1757

Re: Select Bus

My point was kind of leading to perhaps an "accord" of sorts to upgrade the range of messages in select bus. Isn't that just MIDI? The thing wrong with Select Bus is that it uses a controller in a non-standard way to modify Program Changes to Program Stores and that might conflict with other usage....

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