PPG 360 Wavecomputer
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The PPG 360 Wavecomputer was the first serial produced synthesizer featuring wavetable synthesis.
That is if you are one of those persons that consider approximately 40 produced units to be serial production.

The PPG 360 Wavecomputer came in two versions; a 4 and an 8 voice configuration.

It had 30 different wavetables, 100 presets of which 30 were ROM programs showing the 30 different individual wavetables (program 1 utilizing wavetable 1 - program 2 wavetable 2 and so forth), and the machine was using 8 bit wavetables.

It did not feature any kind of filtering, and could roughly be compared to something like a PPG Wave 2 with no filters, no LC display and no knobs for tweaking the sounds.

Not that you couldn't create your own presets on it - you could - it just mainly used sliders instead of the knobs we're so familar with these days.

Also - it was not blue but black or grey (I think I saw a dark-blue one as well at some point - but not 'PPG blue').

It was not exactly a huge success as musicians at that time found it cold and digital - which it in many ways is.
This being in the late seventies where most keyboard players wanted analog filters and analog oscillators.

So Mr. Palm had to get back to the drawing board and created the PPG Wave 2 a few years later in 1981 - a worthy follow-up.

Inside the PPG 360 Wavecomputer you would see two or four separate voice boards as its voice boards held two voices each.

My PPG 360 Wavecomputer is serial # 007 and looks kind of like a prototype inside.
All kinds of manual wiring and soldering and not all connectors are ... connected. I truly love the sound of this thing despite it's unreliability - and I couldn't see my studio or PPG collection being without it.


This is a picture of my PPG 360 Wavecomputer taken from the right of the machine.

This is the connections on the PPG 360 Wavecomputer - or most of them (some are missing from this picture - sorry).

Another pic taken from the right of the unit showing you the buttons.

An almost frontal image of the PPG 360 Wavecomputer.

A close up of the parameter section of the PPG 360 Wavecomputer.

Here is an image of the logo on the back of the unit. It is basically just a sticker.
Also you can see the serialnumber to the left (and the rest of the connections missing from the second image on this page).

This is a picture of my 360 Wavecomputer with it's lid off. Kind of beat up as you can see.

Here you can see the RAM board. I have replaced the battery with a newer one since this picture was taken.

Here you can see the PROM board. This board contains the program for the MPU (microprocessor) and also the wavetables.

The fifteen EPROMs compare to the 6 EPROMs in the wave 2.3.

By the way; the 'missing' EPROM is not missing - it was never meant to be there. I was told this by the designer himself.

Here is a picture of the boards in the 360 Wavecomputer.

Notice it has two voices per board as opposed to the four voices per board on the Wave 2.3.

The TR board in the 360 Wavecomputer.

Thit is the sound-RAM-board (TR means TonRAM in German).
so this is where the oscillators take their waveforms from when you play the keyboard.

One of the four voice boards in my 360 Wavecomputer.
The four voice boards in my particular 360 Wavecomputer are different from one another.

Two of them look kind of the same - and the other two do now :-)

This is the IO board of the 360 Wavecomputer. This board connects most of the stuff together; like the keyboard, analog panel, and stuff like that.

This is what I mean about hand soldering / manual work :-).
Take a look at this picture of the back of the IO board.
No wonder that I sometimes have problems with the 30+ years old solderings.

There you go. One of the many eroded components on my 360 Wavecomputer.
Sometimes I think it's a miracle that it actually produces sound sometimes.

The picture of my 360 Wavecomputer as I saw it when it was for sale.

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