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PLA DL210NET Digi-Loop™ DSP Induction Loop Amplifier
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5a3. EQ
This is a 3-band parametric equalizer providing adjustment for Low, Mid-Band, and High frequency. The center or cutoff
frequency for each band is chosen under the Advanced Settings. The first screen (below) shows the level adjustment for each of
the bands (midrange highlighted). Rotate the knob until Advanced Settings is highlighted and push the knob to select. The 3rd
screen (below) shows the advanced settings, where the center or cutoff frequency for each of the bands is chosen as well as the
slope (in dB) of the cutoff.
5a4. Compression
Compression reduces the dynamic range of the input/output, making soft sounds louder and loud sounds quieter. It has
the overall effect of “volume levelling” so the entire program is more intelligible to the listener. Compression has 5 adjustable
parameters: Threshold, Ratio, Attack, Release, and Makeup Gain.
5a4a-e. Threshold, Ratio, Attack, Release, Makeup
Threshold
is the level of incoming signal at which compression takes effect. The Threshold is adjustable from -96.0dB to
0.0dB in 0.5dB steps.
Ratio
determines how much compression is applied when it takes effect. The Ratio is adjustable from 1.0:1 (no
compression) to 10.0:1 in 0.1 steps.
Attack
is the speed at which compression reacts when the input signal crosses the threshold. The Attack is adjustable from
-0ms to 500ms in 2ms steps.
Release
controls the time that the compressor continues to work after the input signal drops beneath the threshold. Short
settings release the signal quickly, while long release times have the effect of sustaining the signal. The Release is adjustable
from 0ms to 2500ms in 10ms steps.
Makeup Gain
is used to bring the overall level of the sound back up, when the overall volume has been reduced by
compression. This happens when the threshold is set low and/or the ratio has been set high. The Makeup Gain is adjustable
from 0dB to 40dB in 0.5db steps.