EEH DS 500 Sequenzer |
 |
EEH baute den Banana Synthy und einige Sonderanfertigungen von Sequenzern für Tangerine Dream und Klaus Schulze.
Wuppertal, Deutschland, etwa 1982 (?), Auflage unbekannt. Benutzt von Klaus Schulze, Till Kopper und ?
Digitaler 500 Schritte monophoner Sequenzer mit Spannungsausgängen.
Schwarzes Metalgehäuse mit etwa 20/15/6 cm (Breite, Tiefe, Höhe)
EEH built the Banana Synth and some custom sequencers for Tangerine Dream and Klaus Schulze
Wuppertal, Germany, about 1982 (?), # built ? Used by Klaus Schulze, Till Kopper and ?
Digital 500 Steps Sequencer monophonic with Voltage/Gate Interface
Black metal box about 8/6/2.5 inches (width/deep/high).
Vorne / Frontpanel
3 digit 8-segment LED displayspeed knob
bypass switch
matrix of 4 rows and 5 colums of buttons:
left colum:
C (= Control Voltage = used as pitch most times) with yellow LED
T (= Time = note value) with yellow LED
D (= Duration = gate time) with yellow LED
L (= loop) with yellow LED
second colum:
7
4
1
0
third colum:
8
5
2
Start/Stop button with red LED
fourth colum:
9
6
3
+ (next step) with red LED
fifth colum:
M (= mode selector/ pushed twice= step recording) with green LED
I (= load extern= "realtime" recording) with green LED
G (= goto/ tape in) with green LED
- (= goto last step/ tape out) with green LED
Hinten / Backpanel
on/off switch
power in (9-15 Volts) 3,5 mm jack
tape in/out as one (1!) RCA socket
(you have to swap jacks to send or receive from tape)
clock out (Voltage trigger)
clock in (dito)
gate out (to be switched from S to V-trigger with mini switches inside the box)
gate in (dito)
CV out (1 Volt/octave / to be finetuned inside the box)
CV in (1 Volt/octave / to be finetuned inside the box)
Innenleben / Inside
based on NEC 8404P8 D780C and AMD P8255A 8515WCP chips.
500 Steps availible
max note lengh 32 clock tickings
max note duration 31 clock tickings (0= pause)
5 octaves span
Schleifenzähler, deshalb kann man Schleifen innerhalb von Schleifen erstellen. loops with counter, therefore you can built loops inside loops!
memory about 256 Bytes (?)
2 accumulators each 1.5 Volts for memory buffering
Und wie zu meistern / How to master
Um eine Schleife eines C-Dur Arpeggio in der zweiten Oktave ab dem Schritt 250 zu programmieren muß man "nur" eintippen:To program a loop of a C maj arpeggio in the second octave starting at memory location 250 you have "only" to type:
250 G (goto step 250)
M
M (select step recording)
200 C (2nd octave no halfstep= C)
(unit jumps to the next step after every use of the C, T, D or L command)
204 C (2nd octave and 4 halftones above the C = E)
207 C (2nd octave and 7 halftones above the C = G)
250 L (jump to step 250)
001 T (looping endless/ 004 would loop 4 times and would go after that to step selected above)
250 G (goto step 250)
004 T (note lenght = 4 ticks of the clock)
004 T (you could also just type T when the value stays the same as before)
004 T (you could also just type T when the value stays the same as before)
250 G (goto step 250)
003 D (note duration = 3 ticks of the clock)
003 D (you could also just type T when the value stays the same as before)
003 D (you could also just type T when the value stays the same as before)
Wie man sieht war das ganz musikalisch zu programmieren.
As you can see it was really musical to program ;-)
Extras /special
On my unit are some special outputs in front of the box:These Modifications were made by EEH
Midi out (chanel 1 only/ NO NOTE OFF WHEN STOPPED DURING A NOTE !)
clock out at quarter speed of the master clock (= blinking LED of the + button / NOT BUFFERT !)
der Cyclodon Sequenzer
the Cyclodon sequencer
zu den Synthies
to the Synths