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MaxAmp - Check please

Hi Guys,I've attached a stripboard layout.It is basically a very simple amp...but I'm not sure that I wired it correctly...

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ARP Odyssey MKII/III VCO - Eurorack Format

Found my error. It was a small gap in my home made PCB, as usual. The negative Voltage didn't reach the pots. So simple, but yet so common. Now I'll just tune it again.

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Polivox VCF layout

There's also a PCB by Girts on Muffwiggler, seems to work well (and you can order the original semicons to go with it (transistor, programmable gain opamps). Built 2 of those. They are stable and...

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Help with stripboard layout...

They make up filters on the output section so doubling the size of the two caps will change the sound.However, two 1uF caps in series will make .5uF capacitance which would be quite close.Not sure how...

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Buchla 194 Stripboard

.... I've used 860 pF instead of 910 (can't find).... Use 1.5 nF and 2.2 nF in series = 892 pF. Depending tolerance you may find a pair to reach the 910 pF value .

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Buchla 194 Stripboard

.... I've used 860 pF instead of 910 (can't find).... Use 1.5 nF and 2.2 nF in series = 892 pF. Depending tolerance you may find a pair to reach the 910 pF value . Works OK with the 860 pF

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Help with stripboard layout...

Changing the DECAY pot to a 1M seems to hold the decay forever when fully dialed. This seems to make the decay appear to feed back, and starts pitching upwards by a semitone when fully dialled on...

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Help with stripboard layout...

Ignore my last post!Decay and pitch mod pots was not working :)Replaced them and now : BoOooOoOmNote for future builders : pot lugs are numbered from back of the pot in the original stripboard layout,...

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MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?

I've come across this layout (on page 1) a couple days ago and after fixing a couple things to it the filter is working fine and dandy! If anyone is still interested, here is the redraw.(Apologies if...

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TR-808 Snare Stripboard

Yes it should work fine. It might be worth testing a few, even if they are of the same type. Some seem noisier than others. I've found 2N2222's are quite good, but maybe that is just the batch I had....

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diy-layout-creator

" Necro+1 " :D I use this all the time for stripboard and perf layouts back in stompbox land.

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MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?

The +/- jumpers should be switched on tl074.Pin 4 to -, pin 12 to +

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ARP Axxe VCO

It seems I can't find the BOM.Is it possible to get a componenet placement for this?

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MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?

No sorry, just as the last layout that was posted by someone else is plus these changes.Shouldn't be too hard to follow, I tried to make it as clear as I could. You could recreate the existing layout...

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Looking for Sonic Potions LXR & Audiothingies P6 PCB layouts

Hi all, I just wondered if any of you had the PCB files of these two good looking/sounding projects, I'd love to create one !Thanks, Antoine

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MS-20 (LM-13700 version),Polivoks or EMS VCF on veroboard?

Maybe this will be of interest for someone...I've recently built 2 of These ms20 VCF's with the lm13700 but the second one didn't want to oscillate properly...following Rene's schematics i've used the...

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ARP Axxe VCO

Sorry about bumping out this old thread, etched two of these...Non of the 2 working :(I can get 2-4 V (depending on the the PW trimpot) but thats all.No sound, no reaction to the Freq pot or to...

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MFOS LFO AND SH101 SUBOSC

For choosing the waveshapes Youll need spdt.for the HIGH / LOW you can use spst or spdt.Enjoy,Isak E.

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Craig Anderton Hip Bass Drum PCB

Depends on the power supply if its broken now or not, when it uses regulator ICs it is probably fine. For the stuff after the power supply, that most likely is still OK, it just saw the power supply go...

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Wildcat VCF-3 PCB

Made a layout for VCF-3 from EFM's Wildcat ,it's Oberheim type VCF i built once ,liked it so i thought i'll make another ..there were two errors in the layout which i corrected ,but there's no...

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