Front Panel
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- 4 -
Figure 1: 2-LA-2 Front Panel
NOTE: The 2-LA-2 provides two channels, each of which have identical front panel controls.
(1)
COMPRESS / LIMIT switch -
Determines whether the
2-LA-2 channel is acting as a compressor or
a limiter. When set to the down (COMPRESS) position, the degree of compression is gentler and at a
low ratio (approximately 4:1,program-dependent). When the switch is set to its up (LIMIT) position,
more severe compression is applied, and at a higher ratio (up to Infinity:1, again, program-
dependent). (
see pages 13 - 16 for more information
)
(2) GR Zero Set pot -
Used to calibrate the channel’s meter. (
see #3 below and page 23 for
instructions for calibrating the 2-LA-2 meter
)
(3) Meter Function -
This switch determines whether the channel’s VU meter displays the final output
level or the amount of gain reduction. When OUTPUT is selected (the down position), a meter reading of
0 corresponds to a level of +4 dBm at the rear panel line output. When GR (Gain Reduction) is selected
(the up position), the channel’s meter will read 0 dB when there is no incoming signal or when no
compression is being applied.
(4)
Gain -
Determines the final output level of the 2-LA-2 channel. A setting of approximately “6” is
unity gain. Once the desired amount of compression or limiting is set by adjusting the Peak Reduction
knob (
see #6 on the following page
), the Gain knob can then be used to make up for any signal
attenuation (up to 35 dB of gain can be added). In order to have the meter display the effect of turning
the Gain knob, set the Meter Function switch (
see #3 above
) to the down (OUTPUT) position.
(5) Meter -
A standard VU meter that displays either the channel’s final output level or the amount of
gain reduction, depending upon the setting of the Meter Function switch. (
see #3 above
)
Occasionally, the meter may require calibration. (
see page 23 for instructions for calibrating the
2-LA-2 meter
)
