Triggering the ARP's envelopes is a bit tricky if you are using eurorack, as most modules put out only 5V gates & triggers. This is usually not enough.
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I've just ordered FuzzBass TTSH gate booster PCB but while I'm waiting for it to arrive
I decided to test the Eloquencer sequencer by Winter Modular with a ARP 2500
The Eloquencer sends out 8V gates - good enough to trigger the 1046 EGs
You need to adjust the gate length from the Eloquencer.
Most of the old ARP gear seems to want +10V but will usually act on +8v.
yOU CAN trigger the EG from either the upper matrix or lower matrix
The upper matrix allows you to treat the 1046 as if it is 4 "basic" EGs
Use the lower matrix if you want to use the 1046 as two "combined" EGs
When the Trigger Mode switch is in the Multiple setting you need both gates & triggers to activate an envelope. In the single mode, only a gate is required (T not needed).
If you apply another trigger signal while the gate is still present the cycle
will restart. ..a good way for creating multi-peak envelopes.
The 1046 QUAD Exponential Envelope Generator is actually a ARP 1003 & 1033 in a single module.
The 1003 has the stages: Attack, Initial Decay, Sustain, Final Decay
The 1033 has the stages: Gate Delay, Attack, Initial Decay, Sustain, Final Decay
The main difference between the two is the addition of a gate delay
As a side note, the ARP 2600's envelopes also can't be triggered with most eurorack gate/trigger modules. The ARP 2600 uses a gate range of 0-10v
The Gate & trigger output of the ARP 2600 keyboard is +10V
The FuzzBass TTSH gate booster is a useful module to have. In addition to the need for a 10V gate, the 2600's ADSR circuit has a retrigger function.
This requires a 10V trigger signal. This allows
you to reset/restart the cycle when you press a second key (without disabling the gate signal).
I can also clock the eloquencer (slave) from the ARP 1027 sequencer's clock (master).
The 1027 clock sends triggers not gates.
The Greyscale Algorhythm also triggers the 1046 envelopes.
Use the gate inputs of the 1046
Links
+ More about the 2500's EGs
Eurorack modules that might work (I haven't tested this) with a 2500 or 2600 are:
+ MI Marbles - Output levels: -5V to +5V for CVs (largest setting), 0V to +8V for gates.
+ Make Noise -- maths, Rene & pressure points, 0-coast/0-control
+ ER - 101 - 9V
+ Doepfer A-149-2 .... +12V gates
+ TTSH gate booster (fuzzbass) .. converts voltages over 3V to about 10V
+ The Arturia Keystep is also very useful.
CV/GATE outputs:
CV supports 1Volt per octave, Volt>Hz modes,
Gate output 5V or 12V for modern or vintage gear support
+ Arturia beatstep
CV/GATE outputs (1 volt per octave CV, 10 volt gates)
+ Arturia Microfreak
Gate signals can also have different output ranges (S-Trig, V-Trig 5V, V-Trig 10V).
CV: 1 Volt/octave (0-10V), Hertz per Volt, 1.2 Volt/octave (a Buchla specific standard)
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