[ embed · video 01 ]
Dial-as-CV
Sequencing a melody by dialling numbers. Bluebell on bench duty.
● UNIT · MEGAPHONE · REV.A
The megaphone module.
A 5HP, 3U Eurorack module that turns a 1960s BT rotary telephone into a fluent modular controller. Dial pulses become CV. The cradle becomes a gate. The bell becomes a trigger you can drive back from the rack. The phone keeps its dignity. The system gets a new dialect.
// behaviour
What the module actually does.
Plug a paired phone into the megaphone via a single cable. The module debounces the rotary mechanism, decodes pulse trains into integer values, and emits them as quantised CV. Lifting the receiver opens a gate. Dialling produces a clock at the pulse rate. The bell coil can be driven from a trigger input, so the rack can ring the phone back.
Internally: a 32-bit ARM Cortex-M7 handles the timing-critical work in firmware that we have written from the metal up. Front-panel LEDs follow the scope-trace palette — blue for activity, orange for cradle state, dark for idle. The phone wiring stays standard: any 700-series instrument can be converted with care.
Each module ships paired with one phone from the family. They are not sold separately.
// in use
Three short clips. The instrument speaking for itself.
[ embed · video 02 ]
Cradle gating
Lifting and replacing the receiver as a hard envelope trigger.
[ embed · video 03 ]
Ring-back
Driving the bell coil from the rack. The phone rings on cue.
$echo "module enquiries — partnership, presence, custom pairings"
Modules are made in small runs. Speak to us.
We do not stock these. Each unit is made deliberately and paired with a specific phone. Enquiries about commissions, performance loans and partnerships are welcome.