Tube Tech MMC 1A MIC Preamp and DI and multiband compressor - Manual (Page 2)

Lydkraft ApS
Mose Allé 20, DK2610 Rødovre
Denmark
2
MIC-PREAMPLIFIER CONTROLS:
GAIN: The gain switch has a range from +20dB to +60dB in steps of 10dB.
IMPEDANCE: There are a selecting of three input impedances: 600, 1200 or 2400 Ohms.
PHASE: Reverses the phase of the mic input only.
PAD: This switch selects between 0dB or -20dB attenuation in front of the
microphone transformer.
PHANTOM: The +48V DC is supplied to the microphone input via two 6,81 K
resistors.
DI: The Direct Input is an unbalanced, high impedance input intended for various
instruments.
It goes directly into the mic-preamplifier (bypasses the input transformer)
and has a gain range of +10dB to +60dB
MIC/LINE: Switches between Mic/DI and the separate line input on the rear panel
LOW CUT: The highpass filter is selectable between off, 20 Hz (12dB/octave) and
40 Hz (6dB/octave).
MIC/LINE GAIN: All input have a commen gain switch with 2dB/step (-10dB - +10dB)
COMPRESSOR CONTROLS:
X-OVER LOW: Controls the frequency between the low band and the mid band.
Continuously variable from 60 Hz to 300 Hz
x4: Mul t i pl i es t he “ x-over l ow” f r equency by 4, gi vi ng a f r equency of
240Hz to 1200Hz
X-OVER HIGH: Controls the frequency between the mid band and the high band.
Continuously variable from 1,2 kHz to 6 kHz
RATIO: The ratio control varies the ratio by which the input signal is compressed.
If the ratio selected is 2:1, and the input signal increases 10 dB, the output
signal is only increased by 5 dB.
The ratio control is continuously variable from 1,5:1 to 10:1.
(041121)