MATRIXSYNTH

ARP 2500 Pics by Jooris Benny

You can find additional shots on this SYNTHORAMA post.

Party Chambers
Music with the Roland PMA-5. via jimmersound in the comments of this PMA-5 auction post on MATRIXSYNTH-B. This is one of the reasons why I like putting these posts up. You never know what gems you might find.

Update: "all of the sounds on the tracks posted on the Party Chambers MySpace page were recorded straight out of the PMA-5's 1/8" jack. (Even the 'guitar' sounds in the track "Sky Bar"!)

As far as drum sounds go, it has 808 & 909 sounds in it as well as some super cheesy 80's sounding 'power' drums (Which is odd, since the PMA is from '95 or '96 I think)."

Old Synthesizers Giant and odd (Downtown LA)

"We are in the process of clearing out the home of a deceased relative.
he collected alot of wht I believe are old synthesizers.
There are several and many have connecting boxes.Lots of madd scientist Electronics.

We need the house empty by Sunday.
Photo is some of what is there.
We have no idea what the stuff is So Make offers."

On LA Craigslist. If someone checks this out, post back. :)

Waldorf Wall Clock

via this auction

Update via Till "Qwave" Kopper in the comments: "the only legal Waldorf time is found here: link

The clock is not an official Waldorf product. I think it is made by someone uploading the logo to an online shop like spreadshirt (or the plenty others doing single item prints on cloths, mugs and even clocks)

keep on turning these knobs

Till Kopper"

Yamaha GS1/GS2 the First FM Synth Service Manual

via this auction

"Conmplete manual; with Two large Fold-Out Schematics. Vintage Yamaha, their first FM synthesizers. Very rare to see this manual. The manual is for both the GS1 (the "4-Op") and the GS2 (2-op) versions. Each has their own large fold old schematic in the back."

via Loscha who brought us these scans.

Pictures of dead CEM chips

"It has long been known that the CEM chips used in so many synthesizers were semi-custom IC. Doug Curtis, just out of college, had won a design contest sponsored by Interdesign (later sold to Ferranti/GEC Plessey) and went on to work for Interdesign before founding Curtis Electromusic Specialties, later to fold into OnChip Systems. The founder of Interdesign and designer of the '555 timer chip, Hans Camenzind, still operates consultancy business in mask programmable analog semicustom IC, Array Design and has written the book Designing Analog Chips that is available free for download or as a print-on-demand hardcopy.

Here are the first two pictures of de-encapsulated (defect) CEM chips, more to follow as time permits."
CEM3340/CEM3345 on top
CEM3310 on bottom
You can find more including the data sheets on Stromeko: DIY Stuff.

Play Blues by KORG KAOSSILATOR

YouTube via sunny1600vr

Africa on the Prophet '08

YouTube via grondo2001

"Me playing Toto's Africa on the Prophet '08 through the Korg miniKP. A dual brass patch with 4 note polyphony. Nothing great but enjoy it anyway. Read more in Shepit.blogspot.com"

Roland D-50 & Alesis Andromeda

YouTube via Hossinfeffa
"Little experiment done in a style similar to RetroSound. I made a choir patch on the D-50, and MIDI'd the D-50 to the Andromeda's analog pad sound. These two combined shocked me as it was a heavenly combination that seems like something from a JD-800."

Quad LFO and Wave Multiplier Demo

YouTube via boobtube356
"Doepfer quad LFO modulating an A-137 wave multiplier to demonstrate what can be done with these two modules alone. One of the LFOs is providing audio to the A-137. The other modules involved are not altering the sound."