Doepfer A-104 Trautonium Formant Filter
- Order number: 120075
- Depth: 45
Based on the formant filter form the Trautonium the A-104 offers four resonant filter, switchable between low pass and band pass. Especially in band pass mode is good for creating static resonances, formats and vocal sounds.
The module has a common audio inupt with level control and a common audio output which emits the mix of the four filters.
Each filter has a slope of -12dB per octave and a frequency range of 50Hz to 5kHz which means it's rather heavy in the lows and mids. Each has individual controls for setting cutoff frequency, resonance and output level. The switch selects between the modes: low pas / off /band pass.
Due to the sensitive input it has a tendency to distort and has a rather gnarly, very wooden flavor. The resonance doesn't go very high and self oscillation is not possbile. Also filter ringing for creating percussive sounds is hardly possible but it's prety sweet for low-tuned woodblock sounds.
HE: | 3 |
TE: | 20 |
Depth: | 45 |
Power consumption +12V: | 30 |
Power consumption -12V: | 30 |
A-104 @Doepfer
WIth a long trajectory building synths, MIDI keyboards and designing bespoke devices for music pioneers Kraftwerk, Dieter Doepfer decided to design his own modular synthesizer in 1995 based on existing electrical and mechanical specifications of lab equipment he used during his years at university. The official presentation of the system at 1996 Frankfurt Musikmesse caught everyone by surprise and created lots of interest. After Doepfer published the specifications on his website, many instrument designers and engineers saw the potential of the new Eurorack format. Doepfer continues expanding their catalog of over 200 modules (and counting), operating from their modest offices in the outskirts of Munich.