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If you don't want to pick up noise, connect tuning pots to the +- reference voltages rather (+- 9 to 10V) than to the supply rails. It is easy to get them with TL431 or dedicated ref ICs (78Lxx/79L ...

This is my SoundLab rehoused as a Eurorack panel.
I have added a few upgrades from the soundlab plus and ultimate, most of which are mounted as various daughter boards.
Total upgrade to +/-12V
LFO: ...

I was thinking of doing something similar with my three but couldn't work out how to get the connector on the back of the case, but I never thought of putting it on the side Smile

Could somebody point me to a schematic for the SX-150 mark II please?JFI this is for the prototype

Thanks, yes I have already tried the IPA trick, and that revealed that the carbon had indeed worn away. Thanks for the idea about the repair kit I had a similar reply on another forum, but the guy the ...

I have a problem with the chord switches on my omnichord. I have tried stripping the PCB down and cleaned it and the pads down with De-Oxit, bu that didn't work, so I tried rubbing a pencil on the und ...

Could somebody point me to a schematic for the SX-150 mark II please?

Thanks for the pointer to the caps, I have been looking for them at a reasonable price for ages.

Nice job, that must have taken ages, you must be proud Very Happy

Whats next a MiniMoog? Razz

PS Where did you get the slider and switch caps from?

the keyboard has a 1/4 inch jack labeled "effects pedal". Would that help with the pedal I am looking into using? Not necessarily, it could just be a way of using an external device to contr ...

On paper the MT-32 and D-110 are very similar, does anybody have any experience of both that could deny or confirm this please?

Thanks, I have no idea where or how it has been stored but I am guessing it hasn't been used for many years.
When I first took off the battery flaps I found what looked like crushed up digestive bis ...

Thanks, I don't have either of those, but will see what is in B&Q. Any ideas how I stop it from happening again? Somebody suggested a film of WD-40.

I have just bought an ancient 350s for a silly price, it works (mostly) but I need to clean the keyboard as it has some nasty green stains, does anybody have any recommendations how I could do that pl ...

Thanks. I have already had to change the pots once as I was having problems with the Omeg plastic ones, and having just rewired all 29 I don't want to remove them now, so its going to be careful maski ...

Thanks, I have only chopped down plastic pot shafts with cutters. I can see what you mean about the dust and I was thinking of using a cutting disk on a dremel so maybe I need to re-think that.

I am more than happy with the Alpha pots recommended by the good folks here, they are superb and am happy that I changed.
There is however one slight niggle in that I can't find a knob that I am happ ...

Thanks Dave, that's pretty much what I was thinking, apart from the last bit and you are right, it really helped having somebody else give an opinion Smile

I really do prefer Bananas and I think that ...

Thanks PHOBos, reading that has brought a huge smile to my face Very Happy

I have started rebuilding my old kit onto euro-rack panels staying with my beloved 4mm bananas, however everybody else in euro-rack land is using 3.5mm, does anybody have an specific experiences that ...

In the end I found some nitrile washers, which cost less than £2 and made a nice snug fit. The re-wire took around 12 hours, but I used the opportunity to re-route some of the wiring making it a bit ...

OK sorry for showing my ignorance but how is the 3080 better than the LM13700?
He said knowing full well that has had some of these in his spares box for the past 30 years.

I like the front panel sduck, how did you make it?

I bought the Omeg ones on somebody a recommendation that being plastic track they lasted longer and were less noisy, but as I have found to my cost they are not very robust.

I have just started u ...

Thanks I had missed that bit of the post.

I have been doing this for.. well a very long time, since RS were called Radio Spares in fact, I even remember the very first Maplin catalog (It was green ...

Author	Message
Topic: Eurorack Soundlab
Zodiak Replies: 2 Views: 4080	Posted: Wed Apr 24, 2019 7:47 am Subject: Re: Eurorack Soundlab Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Zodiak Replies: 2 Views: 4080	If you don't want to pick up noise, connect tuning pots to the +- reference voltages rather (+- 9 to 10V) than to the supply rails. It is easy to get them with TL431 or dedicated ref ICs (78Lxx/79L ...
Topic: Eurorack Soundlab
Zodiak Replies: 2 Views: 4080	Posted: Tue Apr 23, 2019 1:25 pm Subject: Eurorack Soundlab Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Zodiak Replies: 2 Views: 4080	This is my SoundLab rehoused as a Eurorack panel. I have added a few upgrades from the soundlab plus and ultimate, most of which are mounted as various daughter boards. Total upgrade to +/-12V LFO: ...
Topic: My Monotron Modification
Zodiak Replies: 13 Views: 42157	Posted: Sun May 10, 2015 1:19 pm Subject: My Monotron Modification Forum: DIY Hardware and Software » Circuit Bending
Zodiak Replies: 13 Views: 42157	I was thinking of doing something similar with my three but couldn't work out how to get the connector on the back of the case, but I never thought of putting it on the side
Topic: Gakken SX-150 mark II
Zodiak Replies: 1 Views: 3187	Posted: Sun Feb 22, 2015 6:39 am Subject: Re: Gakken SX-150 mark II Forum: DIY Hardware and Software
Zodiak Replies: 1 Views: 3187	Could somebody point me to a schematic for the SX-150 mark II please?JFI this is for the prototype
Topic: Omnichord Keypad Problem.
Zodiak Replies: 2 Views: 2475	Posted: Wed Nov 12, 2014 1:33 am Subject: Omnichord Keypad Problem. Forum: DIY Hardware and Software
Zodiak Replies: 2 Views: 2475	Thanks, yes I have already tried the IPA trick, and that revealed that the carbon had indeed worn away. Thanks for the idea about the repair kit I had a similar reply on another forum, but the guy the ...
Topic: Omnichord Keypad Problem.
Zodiak Replies: 2 Views: 2475	Posted: Mon Nov 03, 2014 4:08 pm Subject: Omnichord Keypad Problem. Forum: DIY Hardware and Software
Zodiak Replies: 2 Views: 2475	I have a problem with the chord switches on my omnichord. I have tried stripping the PCB down and cleaned it and the pads down with De-Oxit, bu that didn't work, so I tried rubbing a pencil on the und ...
Topic: Gakken SX-150 mark II
Zodiak Replies: 1 Views: 3187	Posted: Sat Nov 01, 2014 4:49 pm Subject: Gakken SX-150 mark II Forum: DIY Hardware and Software
Zodiak Replies: 1 Views: 3187	Could somebody point me to a schematic for the SX-150 mark II please?
Topic: ARP Odyssey Oscillators
Zodiak Replies: 487 Views: 586598	Posted: Sat May 10, 2014 1:36 pm Subject: ARP Odyssey Oscillators Forum: DIY Hardware and Software
Zodiak Replies: 487 Views: 586598	Thanks for the pointer to the caps, I have been looking for them at a reasonable price for ages.
Topic: ARP Odyssey Oscillators
Zodiak Replies: 487 Views: 586598	Posted: Thu May 08, 2014 3:48 pm Subject: ARP Odyssey Oscillators Forum: DIY Hardware and Software
Zodiak Replies: 487 Views: 586598	Nice job, that must have taken ages, you must be proud Whats next a MiniMoog? PS Where did you get the slider and switch caps from?
Topic: Can I hook up a guitar effects pedal to my keyboard?
Zodiak Replies: 6 Views: 5035	Posted: Thu May 08, 2014 3:44 pm Subject: Can I hook up a guitar effects pedal to my keyboard? Forum: Instruments and Equipment » General Discussion
Zodiak Replies: 6 Views: 5035	the keyboard has a 1/4 inch jack labeled "effects pedal". Would that help with the pedal I am looking into using? Not necessarily, it could just be a way of using an external device to contr ...
Topic: MT32 Vs D110
Zodiak Replies: 0 Views: 2478	Posted: Tue May 06, 2014 3:25 pm Subject: MT32 Vs D110 Forum: Instruments and Equipment » General Discussion
Zodiak Replies: 0 Views: 2478	On paper the MT-32 and D-110 are very similar, does anybody have any experience of both that could deny or confirm this please?
Topic: Stylophone 350s
Zodiak Replies: 5 Views: 2538	Posted: Thu Apr 17, 2014 5:51 am Subject: Stylophone 350s Forum: DIY Hardware and Software
Zodiak Replies: 5 Views: 2538	Thanks, I have no idea where or how it has been stored but I am guessing it hasn't been used for many years. When I first took off the battery flaps I found what looked like crushed up digestive bis ...
Topic: Stylophone 350s
Zodiak Replies: 5 Views: 2538	Posted: Thu Apr 17, 2014 3:35 am Subject: Stylophone 350s Forum: DIY Hardware and Software
Zodiak Replies: 5 Views: 2538	Thanks, I don't have either of those, but will see what is in B&Q. Any ideas how I stop it from happening again? Somebody suggested a film of WD-40.
Topic: Stylophone 350s
Zodiak Replies: 5 Views: 2538	Posted: Wed Apr 16, 2014 11:12 am Subject: Stylophone 350s Forum: DIY Hardware and Software
Zodiak Replies: 5 Views: 2538	I have just bought an ancient 350s for a silly price, it works (mostly) but I need to clean the keyboard as it has some nasty green stains, does anybody have any recommendations how I could do that pl ...
Topic: Trimming down Alpha pots
Zodiak Replies: 8 Views: 3715	Posted: Tue Jan 14, 2014 5:16 pm Subject: Trimming down Alpha pots Forum: DIY Hardware and Software
Zodiak Replies: 8 Views: 3715	Thanks. I have already had to change the pots once as I was having problems with the Omeg plastic ones, and having just rewired all 29 I don't want to remove them now, so its going to be careful maski ...
Topic: Trimming down Alpha pots
Zodiak Replies: 8 Views: 3715	Posted: Mon Jan 13, 2014 9:24 am Subject: Trimming down Alpha pots Forum: DIY Hardware and Software
Zodiak Replies: 8 Views: 3715	Thanks, I have only chopped down plastic pot shafts with cutters. I can see what you mean about the dust and I was thinking of using a cutting disk on a dremel so maybe I need to re-think that.
Topic: Trimming down Alpha pots
Zodiak Replies: 8 Views: 3715	Posted: Sun Jan 12, 2014 5:31 pm Subject: Trimming down Alpha pots Forum: DIY Hardware and Software
Zodiak Replies: 8 Views: 3715	I am more than happy with the Alpha pots recommended by the good folks here, they are superb and am happy that I changed. There is however one slight niggle in that I can't find a knob that I am happ ...
Topic: 4mm or 3.5mm Jack
Zodiak Replies: 3 Views: 2847	Posted: Tue Jan 07, 2014 3:42 pm Subject: 4mm or 3.5mm Jack Forum: DIY Hardware and Software
Zodiak Replies: 3 Views: 2847	Thanks Dave, that's pretty much what I was thinking, apart from the last bit and you are right, it really helped having somebody else give an opinion I really do prefer Bananas and I think that ...
Topic: the Moon Base Xplorer
Zodiak Replies: 83 Views: 115542	Posted: Thu Jan 02, 2014 7:10 am Subject: the Moon Base Xplorer Forum: DIY Hardware and Software
Zodiak Replies: 83 Views: 115542	Thanks PHOBos, reading that has brought a huge smile to my face
Topic: 4mm or 3.5mm Jack
Zodiak Replies: 3 Views: 2847	Posted: Wed Jan 01, 2014 6:18 pm Subject: 4mm or 3.5mm Jack Forum: DIY Hardware and Software
Zodiak Replies: 3 Views: 2847	I have started rebuilding my old kit onto euro-rack panels staying with my beloved 4mm bananas, however everybody else in euro-rack land is using 3.5mm, does anybody have an specific experiences that ...
Topic: Zodiak - Soundlab-Z
Zodiak Replies: 3 Views: 4184	Posted: Tue Dec 31, 2013 7:08 pm Subject: Zodiak - Soundlab-Z Forum: DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Zodiak Replies: 3 Views: 4184	In the end I found some nitrile washers, which cost less than £2 and made a nice snug fit. The re-wire took around 12 hours, but I used the opportunity to re-route some of the wiring making it a bit ...
Topic: CA3080 revived
Zodiak Replies: 30 Views: 26262	Posted: Wed Dec 18, 2013 2:13 am Subject: CA3080 revived Forum: DIY Hardware and Software
Zodiak Replies: 30 Views: 26262	OK sorry for showing my ignorance but how is the 3080 better than the LM13700? He said knowing full well that has had some of these in his spares box for the past 30 years.
Topic: 2013 Build Pictures
Zodiak Replies: 177 Views: 165110	Posted: Fri Dec 13, 2013 3:52 pm Subject: 2013 Build Pictures Forum: DIY Hardware and Software
Zodiak Replies: 177 Views: 165110	I like the front panel sduck, how did you make it?
Topic: Green Omeg pots
Zodiak Replies: 23 Views: 14645	Posted: Sun Dec 08, 2013 10:06 am Subject: Green Omeg pots Forum: DIY Hardware and Software
Zodiak Replies: 23 Views: 14645	I bought the Omeg ones on somebody a recommendation that being plastic track they lasted longer and were less noisy, but as I have found to my cost they are not very robust. I have just started u ...
Topic: Green Omeg pots
Zodiak Replies: 23 Views: 14645	Posted: Wed Dec 04, 2013 9:31 am Subject: Green Omeg pots Forum: DIY Hardware and Software
Zodiak Replies: 23 Views: 14645	Thanks I had missed that bit of the post. I have been doing this for.. well a very long time, since RS were called Radio Spares in fact, I even remember the very first Maplin catalog (It was green ...