That's Better!

This PCB went a bit better! Cleaning the board with Acetone certainly helped... Will do a bit of experimentation with this once it is working as it is a bit of a different configuration from the OTA and ladder filters...

Acid Adventures...

Have done a few layouts recently. The actual laying out has gone well but the etching has failed as I have had a bit of trouble getting Amonium Persulphate as easily as I used to so I tried Hydrocloric Acid and some Hydrogen Peroxide mix. The problem is that it is etching the toner off the board before it is completing...

32 Years Later...

I remember buying this Elektor and always being interested in the Resonant Filter Module. Well here we go! I just need to attach it to the front panel from the last post!

Panelz

Well another Panel is awaiting the drill press! This is the much needed MIDI interface and a real bast from the past in the Elektor Formant RFM (Resonant Filter Module). This thing has always interested me since I read the acticle in Elektor over 30 years ago... I still have the Magazine as well! Reading the Electro-Music forum there was some scorn poured upon it, but it was less specific than "rfm is crap". Will very soon find out what sort of crap it is! Could be excellent crap... or maybe not... Perhaps I should have gone with the Jürgen Haible Polymoog Resonator as it is similar in nature?

Cabinet Creations

Poor old Forbin has been very neglected as all manner of stuff has revolved around him... We have however got the cabinet glued up to-day. It is going to be a fair size at about 1m x 1m -- I can squeeze in 4 x 9 panels at my standard size. You can see one of them sitting in the frame. There is a fair amount of sanding and coats of varnish to go but it shouldn't be too long before we can start screwing in the panels for real.

NOS Toobz

These arrived from TubeDepot today. I think that we have an average age here of about 40... There is another couple of pencil tubes to do the Mean VCF, three 2D21's for a VCO and a Thermonic Noise source. To finish off a 6BN6 for a beam modulator... also a collection of ceramic tube bases for the PCB... should be fun!

6ME8

Bought this NOS valve, a 6ME8, to make a Sheet-Beam Modulator as per Ken Stones site where he hosts some of Eric Barbour schematics and articles. On closer inspection I can see that he inside of this one has become a bit munted... Not really sure how this is going to effect the sound but I suppose that we shall just have to give it a go...