W133 External Input Interface

Our W133 External Input Interface derives its inspiration from the design of the envelope follower found in the classic ARP 2600 synthesizer; featuring similar elements of circuitry and functionality.
 
It serves as more than just an envelope follower however; an additional built-in preamp and comparator make it ideal for use as a general input module.
 
The preamp has two switchable, unbalanced inputs; a 1/4" socket (x100 gain) for instruments such as a guitar or external synth and a 3.5mm socket (x1,000 gain) for microphones. A gain control is also provided, along with two outputs with an clipping indicator LED.
 
The output of the preamp is normalled to the input of the envelope follower. The envelope follower has its own dedicated input (with a level control) that bypasses the preamp. Other features include a smoothing switch for the output of the envelope follower. A level indicator LED also provides a visual representation of the output signal level.
 
The output signal from the envelope follower is normalled to the input of the comparator. The comparator has an adjustable threshold and outputs corresponding 10V gate and trigger signals; again an LED indicator provides a visual representation of the gate output level.
 
Features
Design and circuitry inspired by the envelope follower found in the ARP 2600.
Additional built-in preamp and comparator allow the module to serve as a general input module.
The preamp has two switchable, unbalanced inputs; a 1/4" socket (x100 gain) for instruments such as a guitar or external synth and a 3.5mm socket (x1,000 gain) for microphones. A gain control is also provided, along with two outputs with an clipping indicator LED.
The output of the preamp is normalled to the input of the envelope follower. The envelope follower also has its own dedicated input (with a level control) that bypasses the preamp.
The envelope follower output has a smoothing switch that results in smaller amplitude changes of the output signal over time. A level indicator LED also provides a visual representation of the output signal level.
The output signal from the envelope follower is normalled to the input of the comparator. The comparator has an adjustable threshold and outputs corresponding 10V gate and trigger signals; again an LED indicator provides a visual representation of the gate output level.
Ergonomic design.
Hand-built and tested in the UK.
 
Specifications
Model number: W133
Format: Eurorack
Width: 12HP
Depth: approx. 40mm
Power consumption:
+12V: 80mA
-12V: 50mA
+5V: 0mA
 
Delivery
Please see our Delivery Policy for more information.