With the Mod FM D, Jomox presents a hybrid, 8-voice FM synthesizer in desktop format that is capable of producing the craziest sounds. In addition to the complex 4-operator FM synthesis with 26 algorithms, the
It is a logical step to also offer the Mod FM as a stand-alone desktop device. In the D version, the synthesizer is housed in a case that is larger than the front panel of the module. It has its own power supply, MIDI inputs and outputs with DIN sockets, a balanced stereo output and an audio input. The latter turns out to be an analog side chain stereo input, via which external signals can be fed into the effects of the
The four operators (sine oscillators) are arranged in a matrix in which each operator (sine oscillator) can be frequency-modulated by the other three. Modulation values and fundamental frequencies are set using the 16 endless controls of the matrix. Various overtone modes in combination with the 26 algorithms, which are based on the Yamaha DX-9, make it possible to create musical sounds. Of course, this can also be largely ignored to create chaotic, inharmonic FM sounds.
The two LFOs modulate the frequency and amplitude of each voice and offer an impressive selection of 64 waveforms each. Optionally, the LFOs can be switched to the VCO and can even be integrated into the audio path. The
The analogue filter is realized per voice with an SSI2140 chip, which is based on the original SSM2040, whose sound and behaviour is known from various Oberheim Polys and the SCI
The desktop version has CV and