About the GL 1B Compressor
Discover the magic of the Greenbox GL 1B, a Tube Opto Compressor that elevates your audio to the highest level of excellence!
Inspired by the classic CL 1B, the Greenbox GL 1B circuit preserves the essential characteristics of the original model, but goes beyond, offering an expanded range of sound possibilities.
We innovated by adjusting the circuit, introducing exclusive features that further expand the sound and compression of this incredible equipment.
Optimizations in the compression stage:
1- We replaced the Fixed Attack/Release selector with a 4-position Knee selector, providing total control over the compression curve. Even so, Attack and Release can normally be controlled separately with each button.
2- We replaced the Bus Select selector with a 4-position Low Cut selector, allowing you to cut bass during compression (sidechain).
The Greenbox GL 1B not only takes the features of the CL 1B with it, but also takes compression to new levels, offering unique possibilities that you won't find in the original model.
Optimizations in the audio signal stage:
1- We replaced the VU selector with a COLOR selector, where you can choose between two different sounds.
In position 1: the audio signal passes through a stage with tantalum capacitors, providing a more velvety and soft sound.
In position 2: the audio signal passes through special selected electrolytic capacitors, providing more linearity, with a "more standard" sound characteristic.
2- Not satisfied with just the presence of the valve, we also added a 2N3055 transistor, known for its distinctive presence in the renowned Neve equipment.
This powerful combination not only adds an even warmer tone to your audio, but also gives the GL 1B a rich duality of sonic characteristics, capturing the enveloping warmth of the valve and the unique clarity of the 2N3055 transistor.
And to complete this package of extraordinary features, the Greenbox GL 1B is equipped with two carefully selected audio transformers.
The input transformer, made of Permalloy, not only provides impeccable sound quality, but also offers high-level isolation.
The output transformer, built based on the original CL 1B model, is made of silicon, ensuring performance with the same characteristics as the original model.
On the back of the equipment there is a P10 connector for linking two GL 1B simultaneously, and thus using both with linked compression.
Get ready for an enhanced compression experience, where tradition meets innovation, elevating the Greenbox GL 1B to formidable performance!
Transform your musical experience with the Greenbox GL 1B and unleash the sonic potential of your studio like never before!
Overview:
GAIN: Controls the gain after compression.
ATTACK: Controls the time the compressor will start to act.
RATIO: Controls the compression factor.
RELEASE Controls the time the compressor will stop acting.
THRESHOLD: Controls the gain applied to compression.
KNEE: Controls the compression curve.
COLOR: Selector to toggle between two sound modes.
sidechain LOW CUT: Selector to toggle the low cut of the Sidechain.
Included Items
GL 1B compressor, Greenbox external power supply, instruction manual, warranty term.
Warranty: 1 year
Specifications:
External Source
110V/220V ~ (50/60Hz) / Output Voltage: 84/84 V ~ (250mA), 15/15 V ~ (1A)
Internal High-Voltage Operate
230 VDC (Plates), +12.5 VDC (Heaters)
Signal Section:
THD (Total Harmonic Distortion) @ 10dB Gain
< 1% @1kHz (approx.)
Equivalent Input Noise (noise floor) -80dB @ +2dB Gain
Input Impedance 600 Ω (with permalloy audio transformer model TT-6060IB)
Output Impedance 200 Ω (with silicon audio transformer model TT-2020B)
Frequency Response 5Hz to 25kHz
Color Selector 2 positions
Tube 1x 12AT7 double triode
COMPRESSOR CONTROLS:
Ratio Variable 2:1 to 10:1
Attack and Release Variable Fast to Slow
Threshold Variable Off to -40dB
Knee Variable Soft to Hard (4 positions)
Sidechain Low Cut Variable Off, 75Hz, 150Hz, 300Hz
Switch Sidechain On/Off Compress
Meter Analog VU
GENERAL INFO:
Line Input XLR balanced
Line Output XLR balanced
Dimensions 3U x 19" x 300mm
Weight 5 kilos
Power Supply Greenbox External Source
DOWNLOAD MANUAL ->
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