Controls & Connections - Phonic A6500 User Manual

CONTROLS & CONNECTIONS
The OPTIMIZER has two channels which have
identical controls and connections. The following
descriptions apply to both channels.
Front Panel
1. LOW/HIGH INPUT LEVEL meter
This 8-segment LED meter displays the input
level of either the low band or the high band,
depending on the setting of the LO/HI METER
button.
2. (Input) CLIP indicator
This LED indicator lights up when clipping
occurs at either the low band or the high band,
depending on the setting of the LO/HI METER
button. If this indicator lights up frequently, reduce
the input level from the source device to prevent
audio distortion.
3. LO/HI METER button
When this toggle button is depressed, the LOW/
HIGH INPUT LEVEL meter and the (input) CLIP
indicator display the status of the high band.
When the button is released, the LOW/HIGH
INPUT LEVEL meter and the (input) CLIP
indicator display the status of the low band.
4. LOW REDUCTION meter
This 8-segment LED meter displays the amount
of gain reduction occurring at the low band.
5. HIGH REDUCTION meter
This 8-segment LED meter displays the amount
of gain reduction occurring at the high band.
6. OUTPUT LEVEL meter
This 8-segment LED meter displays the level of
the channel output.
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7. (Output) CLIP indicator
This LED indicator lights up when clipping occurs
at the channel output. If this indicator lights up
frequently, reduce the output level to prevent
audio distortion.
8. LO COMP. T-HOLD control
This control knob adjusts the compression
threshold of the low band. All signals above the
set level are compressed. The threshold for the
low band can be set at any level between -40 and
+10 dB.
9. LO COMP. RAT control
This control knob determines the compression
ratio for the low band, ranging from 1:1.2 to 1:25.
10. (Low) ATTACK control
This control knob determines the speed with
which the compression for the low band
begins after the input level has exceeded the
threshold. The range of control is from 0.1 to 200
milliseconds.
11. (Low) RELEASE control
This control knob determines the speed with
which the compression for the low band ceases
after the input level has fallen below the
threshold. The range of control is from 0.05 to 3
seconds.
12. X-OVER control
This control knob determines the crossover
frequency, or the frequency at which the low and
high bands are separated. The crossover can be
set at any frequency between 10 Hz and 12 kHz.
13. HI COMP. T-HOLD control
This control knob adjusts the compression
threshold of the high band. All signals above the
set level are compressed. The threshold for the
high band can be set at any level between -40
and +10 dB.
A6500 USER'S MANUAL
CONTROLS & CONNECTIONS
Page 5