User manual GML GML2020

[. . . ] George Massenburg Labs GML 2020 High Resolution Discrete Input Channel The GML 2020 High Resolution Discrete Input Channel sets a new standard in signal processing. Combining the features of the GML flagship 8200 Parametric Equalizer, 8300 Transformerless Microphone Preamplifier, and 8900 Dynamic Gain Control with additional functions, this powerfully pristine single channel unit embodies the legendary detail and accuracy for which GML is renowned. Owner's Manual Version 1. 2 April, 2002 All materials herein © GML, LLC. GML, LLC P. O. Box 1366 Franklin, TN 37065 615. 790. 1016 (ph) 615. 794. 4802 (fax) gmlinc@ix. netcom. com INTRODUCTION The GML 2020 High Resolution Discrete Input Channel sets a new standard in signal processing. It combines the features of the GML flagship 8200 Parametric Equalizer, 8300 Transformerless Microphone Preamplifier, and 8900 Dynamic Gain Control into a powerfully pristine single channel unit. [. . . ] The M/I input jack furnishes a convenient unbalanced high impedance input to the Model 2020. The Input Source switch, a 3-position rotary switch with precious-metal contacts, determines which of the three inputs are routed to the Input section of the Model 2020. The Frequency/Q potentiometer determines the center frequency and Q-factor for each band. Frequency ranges differ for the bands to accommodate maximum flexibility, while each concentrically mounted Q control ranges from 0. 4 (wide) to 4 (narrow). The inner numerical markings denote center frequency and outer markings delineate Q value. The Threshold potentiometer behaves as discussed in the Operation section of this manual. The Timing control is a dual-concentric potentiometer, with the Timing actuator on the outer ring and the Release Hysteresis control on the inner knob. The outer numerical markings denote the amount of hysteresis, while the inner markings denote the Timing setting, in milliseconds. The Crest Factor potentiometer is dual-concentric and independently controls the Fast (outer) and Peak (inner) Crest Factor settings, as described in the Operations section of this manual. The Ratio control, mounted concentrically within the Output potentiometer, acts independently to determine both the mode of operation (Soft vs. The Output potentiometer provides a range of -6 to +14 dB gain in the output buffering stage. MODEL 2020 BACK PANEL DIAGRAM A. Power Supply Input enables interconnection of the external supply required for the unit to operate (Model 9015). The Grounds terminal block gives a common point of continuity to the chassis ground (Chassis) and the electronics ground (Supply). Normally these terminals are tied together with the grounding strap; however, in certain situations it may be advantageous and/or necessary to keep these ground references independent (to eliminate ground loops in some installations, for instance). These high-quality RCA connectors carry the control signal from the Dynamics section of the Model 2020 and allow the highest control signal to dominate, as described in the Control Link section of this manual. The Output connector provides a professional interconnect to external devices. A precious metal, durable XLR connector is provided for the main output, which is D. C. The Sidechain input provides the flexibility of external Dynamics section control on an XLR. Selected via the front panel Routing switch, the Sidechain input is a buffered, balanced interface. The Line input connector features durable precious metal construction. This female XLR feeds the precision electronically balanced input stage via the front panel Input Source control. The Mic input XLR feeds the input stage through the front panel Input Source switch. [. . . ] Franklin, TN 615. 790. 1016 (ph) 615. 794. 4802 (fax) internet: www. massenburg. com NOTICE OF COPYRIGHT AND OWNERSHIP All designs, circuit board artwork, front panel artwork, text contained herein and therein, and all other intellectual material is the sole property of George Massenburg Labs, LLC (and/or GML, Inc. ). Violators will be prosecuted to the fullest extent of all applicable laws. Transfer of ownership of this unit neither confers nor implies any transfer of ownership of the intellectual property, proprietary design, etc. A FINAL REVISION CONTAINING ALL PERTINENT INFORMATION WILL BE INCLUDED IN FUTURE RELEASES OF THIS DOCUMENT. Credits Concept: George Massenburg and Jeffrey Warren Written by: Jeffrey Warren Diagrams: Jeffrey Warren Edited by: Jeffrey Warren and George Massenburg Additional editing: Jenny Rosato, Frank Wire, EveAnna Manley Technical assistance: Frank Wire, Adrian Nastase, Alan Meyer ADDITIONAL GML PERIPHERALS Model 8200 Parametric Equalizer, Series II Model 8300 Transformerless Microphone Preamplifier Model 8355 Power Supply Model 8900 Dynamic Gain Control, Series III Model 9015 Power Supply Model 9500 Two Channel 5-Band Parametric Mastering Equalizer HRT 9100 Mixer HRT 9145 Multi-Output Power Supply Model 9550 Two Channel Digital Noise Filter Model 9560 Digital Noise Filter w/ Macintosh Controller For ordering information, contact: GML USA Sales Office: TransAmerica Audio Group 4760 Dewey Dr. [. . . ]