Hi Tony. I finally found the problem. Nothing to do with the socket board. Nothing to do with anything except an elementary and idiotic error on my part. C1 was 1nF instead of 100nF. What is even more embarrassing is that it took two days to find it! However, the module works perfectly now and has c...

Hi Tony. Thanks for your help with this. I have made some progress and I think I have isolated the problem. I don't think there are any problems with the module itself. The issue seems to be with the socket 8 pcb. I noticed I had continuity between pins 5,6 and 7 on the 8 way header of the socket 8 ...

Hi Tony. Thanks for the reply. Just been doing some more tests. I'm getting some bizarre behaviour! R18 reads 100k but I will pull it to check it out of circuit. Pin 3 of U2 is fine, as are leads of R10, soldering looks fine. Getting 5v at pin 7 of U2 and -5v at pin 7 of U3. Here's the weird bit. Wi...

Hi folks. Have recently built a vco controller and it is misbehaving. Here are the symptoms; Built in LFO runs from about 10Hz to 6kHz instead of very slow to about 50Hz LFO sine looks good -5 to +5v. LFO square looks good but 0 to +5v. Can't trim scale of CV1, pitch seems to glide upwards on its ow...

Hi Tony. Thanks for your reply and insight. I tried the TM3030 thru the overdrive-II and it does give it a great deal of grit. Very easy to overdo it though. I've never heard a real 303 'in the flesh' but the TM3030 does sound cool. If you ever decide to produce some more, I would definitely build a...

Hi folks. I've had my TM3030 finished and tested for a while but only recently fitted it to its 5U panel and into my modular alongside two ASVs and a handful of 5U modules. The output of the TM3030 is really quiet, especially compared to the ASV main out. It measures about -0.5 to +0.5v, peaking abo...

Hi Tony.

Yes, I mean TL072! Sorry.
I've used the TLE2072 in place of AD712s which are getting real pricey now.
Thanks for the info.


Tom.

Hello Folks. I'm nearing the end of building a fair size system, so reluctant to keep buying components. I have run out of TLE072ACPs, but have loads of LF412CNs and CPs. Is it ok to use the LF412s in place of the TLE072s? Specifically, in the Multi and Fourmixers, SVCOB and VCAX? Any info or sugges...

Ooh.

Forgot to mention, those 0.1% resistors from Rapid are only 30p.

Regards.

Tom.

Hi Pav. You will enjoy building and using your ASV. I've built two and they sound terrific, especially together thru a mixer. Regarding your 22K 0.1% resistor quandry, do you use Rapid? They have over 800 of these; https://www.rapidonline.com/vishay-mmbb02070e2202bc100-22k-mbb0207-0-4w-precision-res...

Congrats Oozitron. Glad you got it working. I too have been waiting for pots and AS3310s from Banzai since late December! I got my pots the other day after a few emails to them, so I'm surprised you're (Tony) still waiting. I had some Coolaudio V3207s on order too, for the Flanger. I gave up in the ...

Tony.
Thanks for your insight.
Sounds like more hassle than it's worth I think.

Cheers.

Tom.

Hi to all. I've been gradually building up an exclusively Oakley system for about a year now and really enjoying the builds and the modules. I currently have two VCOs and two SVCO-Bs, which are awesome. I also have a VC-LFO (also awesome). I particularly like the convenience of the octave switching ...

Hi Tony. Tried your suggestion of removing U5, you were 100% spot on. It was a CD4066BE though, and not a 74HC4066. Luckily, Farnell have a MOQ of 5 for these, so I had spares. So, the question is, what fried it? I am generally quite careful around cmos ics and all other ics for that matter. i use a...

Thanks Tony.
Will try that later tonight.

Tom.

I have built several modules now and every one till now has worked flawlessly, thanks to Tony's superb documentation and advice. I have a strange issue with my last built module, the mididac. It worked fine when I finished the build yesterday, but today at switch on, everything worked except the pit...

I have tried the TLE2072ACP and the LF412ACN in place of the AD712 in the mididac and they work fine.

Hello folks. I am brand new to the Wiggler forums but stumbled across this thread and felt compelled to register and reply. Interesting mixture of comments and opinions on these synths here. Are they worthy of being restored? That's the question. What someone is prepared to pay for a wreck and a shi...