MOTM-450 FIXED FILTER BANK

The MOTM-450 Fixed Filter Bank is an improved version of the classic Moog 907A Filter Bank. The MOTM-450 contains 8 bandpass filters, a lowpass filter and a high-pass filter. Instead of bulky inductors and hand-matched capacitors used in the '907A, the MOTM-450 uses a special class of active filters called a FDNR (pronounced FUD-NER), which stands for Frequency Dependent Negative Reactance. The FDNR simulates the phase response as well as the frequency response of the LRC Moog circuit. Other fixed filter banks use more 'standard' filter topologies, which do NOT sound the same as the FDNR/Moog 907A circuitry. The disadvantage is that the FDNR requires 3X more parts, which explains the relative higher cost of the MOTM-450 module. However, the sonic quality difference is obvious, as is the 12dB lower noise floor compared to other fixed filter banks (that's 4 TIMES lower).