gml gml2032 Manual De Usuario
IV. Insert
A portion of the Model 2032's allure is the flexibility accorded the user in determining the
signal routing of the preamplifier and equalizer sections. This functionality is
incorporated in the front panel Insert control, an illuminated pushbutton switch that
activates a precious-metal contact signal relay.
signal routing of the preamplifier and equalizer sections. This functionality is
incorporated in the front panel Insert control, an illuminated pushbutton switch that
activates a precious-metal contact signal relay.
Specifically, the Insert function allows the user to configure the Model 2032 for Single
Channel, Independent, or Inline Insert operation (
Channel, Independent, or Inline Insert operation (
see
illustration
). Single
Channel operation feeds the preamplifier output—post-HPF—directly to the equalizer
input. Independent operation allows the preamplifier and equalizer to be used on
separate signal sources simultaneously, where the Insert Out XLR provides the
preamplifier output and the Insert In XLR sources the equalizer input signal. Essentially
a special case of the Independent configuration, Inline Insert operation places an
external device--possibly a Model 8900 Dynamic Gain Control--between the
preamplifier and equalizer sections of the Model 2032. The external device must have
analog input and output to interface with the analog-only architecture of the Model 2032.
input. Independent operation allows the preamplifier and equalizer to be used on
separate signal sources simultaneously, where the Insert Out XLR provides the
preamplifier output and the Insert In XLR sources the equalizer input signal. Essentially
a special case of the Independent configuration, Inline Insert operation places an
external device--possibly a Model 8900 Dynamic Gain Control--between the
preamplifier and equalizer sections of the Model 2032. The external device must have
analog input and output to interface with the analog-only architecture of the Model 2032.
In all cases, the Output XLR of the Model 2032 is the direct-coupled DC-servo corrected
output of the equalizer stage, while the Insert Out XLR carries the direct-coupled DC-
servo corrected output of the preamplifier stage, post-filter. There is, therefore, no
dedicated output buffering stage; nor is there a master output level control.
output of the equalizer stage, while the Insert Out XLR carries the direct-coupled DC-
servo corrected output of the preamplifier stage, post-filter. There is, therefore, no
dedicated output buffering stage; nor is there a master output level control.
Unused inputs and outputs need not necessarily be disconnected from the Model 2032
when de-selected. Indeed, both outputs always transmit signal, given an appropriate
input. Neither of the XLR inputs (Input, Insert In) short to ground when not in use.
Leaving a 1/4” connector in the MI jack with MIC selected will not adversely affect either
the Model 2032 or the external musical instrument. The MI input, however, does short
the signal pin (tip) to ground when no connector is inserted, regardless of the position of
the Source switch.
when de-selected. Indeed, both outputs always transmit signal, given an appropriate
input. Neither of the XLR inputs (Input, Insert In) short to ground when not in use.
Leaving a 1/4” connector in the MI jack with MIC selected will not adversely affect either
the Model 2032 or the external musical instrument. The MI input, however, does short
the signal pin (tip) to ground when no connector is inserted, regardless of the position of
the Source switch.
V. Overload (OL)
In light of the considerable amounts of gain available in both the preamplifier and
equalizer sections of the Model 2032 Microphone Preamplifier / Parametric Equalizer,
the OL (overload) indicator LED provides an essential metering function. This peak
detection meter monitors both the preamplifier and equalizer outputs to preemptively
warn of possible signal overload, regardless of the configuration selected on the Insert
control. It should be noted that although this warning LED is triggered at 24dBu from
either aforementioned signal, actual clipping throughout the Model 2032 is not
experienced until approximately 27.5dBu, thanks to the extended headroom of GML
9202 discrete opamps.
equalizer sections of the Model 2032 Microphone Preamplifier / Parametric Equalizer,
the OL (overload) indicator LED provides an essential metering function. This peak
detection meter monitors both the preamplifier and equalizer outputs to preemptively
warn of possible signal overload, regardless of the configuration selected on the Insert
control. It should be noted that although this warning LED is triggered at 24dBu from
either aforementioned signal, actual clipping throughout the Model 2032 is not
experienced until approximately 27.5dBu, thanks to the extended headroom of GML
9202 discrete opamps.