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The INPUT section of the Master Bus Transformer contains a +/-12 dB Trim control, LEDs to indicate input level/peak, and a sweepable high pass filter from 15 Hz to 100 Hz. This feeds a new 2-band Shelf EQUALIZER circuit with 3-octave ranges, gentle slopes and minimal phase shift. Each band has +/- 9 dB of gain control, with the LF EQ corner frequency variable from 30 Hz to 240 Hz and the HF corner frequency variable from 3 kHz to 24 kHz. From the company: “An exciting aspect of using the MBT is discovering how the different sections can interact with each other. Sometimes the equalizer can be activated first, other times it can be left alone until the other sections are selected. We always encourage experimentation.
The COLOR COMP is an all-new optical compressor that “excels at emphasizing the non-linear distortion and “color” characteristics of the Opto cartridge.” The ratio can be set to 2:1 for more subtlety or 5:1 for more dramatic reduction, the side chain high pass filter is sweepable from 20 Hz to 350 Hz to allow low frequencies to pass through without compression, the release time is variable from 100 mS to 1.5. S, and the BLEND command provides the ability to compress in parallel with the source material. A green LED indicates gain reduction, and 20 dB of Class A boost gain is available, intended not only for level matching but also to drive the inter-stage transformers found in the SUPER SILK section.
Features:
- Input impedance: 10 kohms
- Noise (22 Hz - 22 kHz): better than -95 dBu
- THD+N (0 dBu at 1 kHz): Better than 0.004%
- THD+N (+20 dBu at 1 kHz): Better than 0.002%
- Maximum input level: +25.5 dBu
- Crosstalk at 1 kHz: better than -95 dB
- Response frequency: <5 Hz - 30 kHz: +/- 0.1 dB? <5 Hz - 60 kHz: +/- 0.25 dB? <5Hz 180kHz: -3dB
- Dimensions (L x D x H): 483 x 257 x 89 mm
- Weight: 7 kg
