gml gml2020 Manual De Usuario

One channel, multi-input, gain, filter, parametric equalizer, and dynamic range controller

Input Section

3 inputs: Mic, Line, M/I 

(Tip = Signal, Sleeve = Ground)

Input Source control: Mic, Line, M/I
Gain control: -10dB to +70dB, 5dB steps
Input meter, 5 LED's: -30dB, -20dB, 0dB 

(green)

, +18dB 

(yellow)

, +24dB 

(red)

Phase switch, toggle: In-phase 

(LED off)

, Phase reverse 

(LED on)

Phantom switch, toggle: Phantom on 

(LED on)

, Phantom off 

(LED off)

Filter -- Second-order Butterworth active high-pass filter; 100Hz, flat, 40Hz

Routing control 

(for further delineation and graphical representation, refer to the block diagrams in this manual)

1.  EQ before DYN, SC IN
2.  EQ before DYN, No SC
3.  EQ to SC
4.  DYN before EQ, No SC
5.  DYN before EQ, SC IN

EQ section

EQ IN switch, illuminated pushbutton: EQ in 

(LED on, switch in)

, EQ out

(LED off, switch out)

4 bands, fully parametric, continuously variable

1. 

15 Hz – 800 Hz, Q of 0.4 – 4.0 or shelving, 15 dB boost/cut

2. 

120 Hz – 8 kHz, Q of 0.4 – 4.0, 15 dB boost/cut

3. 

400 Hz – 26 kHz, Q of 0.4 – 4.0, 15 dB boost/cut

4. 

400 Hz – 26 kHz, Q of 0.4 – 4.0 or shelving, 15 dB boost/cut

Dynamics section

DYNAMICS IN switch, illuminated pushbutton: Dynamics in 

(LED on,

switch in)

, Dynamics out 

(LED off, switch out)

Threshold control: 0dB to 20dB
Timing: Timing control, ring: 1.2ms to 70ms

Release Hysteresis control, knob: 1ms to 7ms, OFF detent

Crest Factor: Fast Crest Factor control, ring: 0dB to 20dB

Peak Crest Factor control, knob: 0dB to 20dB

Output: Output control, ring: -6dB to +14dB

Ratio control, knob: 1.1:1 to 

∞

:1, SOFT detent

LINK ON switch, illuminated pushbutton: in 

(LED on)

, out 

(LED off)

Main Output: direct-coupled, DC-servo corrected, unbalanced 

(pin2=Sig, pins1,3=Gnd)

Clip/OL -- Red LED, +24dBu indication: monitors EQ and DYN outs

POWER

Requires GML Model 9015 external power supply; +/-28 VDC, +/-18 VDC
Additional board-level regulation: +/-15 VDC, +12 VDC
Separate Ground and Chassis connections at rear

MECHANICAL

19" W x 3.5" H x 8.5" D rack mount chassis, black anodized aluminum, silver legend
Weight: 11 lbs., approximate; shipping weight may vary