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3 – Front panel features
A brief guide to the front panel features of the AV-
452, with a little more technical detail than in the Op-
eration Guide.
Microphone channels
Each of the four microphone channels is identically
equipped.
1
2
AV control and selection section
This section is used to select the appropriate AV
source, and control the sound.
6
7
6 DIM key
This latching key is used to attenuate
the AV source signal by 20 dB. It lights when dim-
ming is active.
7 Fader
The unity gain for this fader, which is
used to control the level of the selected AV signal, is
at the maximum level.
8 REC MONITOR control/indicator
spite the name, this control and indicator acts a
record source selector.
• In the
position, the output of the signal
SOURCE
selected using the AV selector keys is fed to the
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TASCAM AV-452 Installation & Support Guide
3
4
5
8 9
A
B
De-
It can be used as a quick reference guide for everyday
operation, or to form the basis for an introductory ex-
planation to the users of the equipment.
1 MUTE key
This latching key lights when the
mic input channel is muted.
2 Fader
The unity gain for this fader is at the
mark.
3 OL indicator
Lights at 10 dB above the nom-
inal clipping level.
4 GAIN control
Provides 33 dB of control to
adjust the mic level appropriately.
5 EQ section
3 bands, each providing ±10 dB
at the following frequencies (optimized for voice):
: 8 kHz (shelving)
HI
: 2.5 kHz (peaking)
MID
: 250 Hz (shelving)
LO
inputs of all connected equipment (except the
source unit, to avoid signal loops). For example, if
the cassette is selected, the cassette output is fed to
the CD-RW and VCR inputs. The indicator lights.
• In the
position, the cassette output is fed to
CASS
the CD-RW and VCR inputs, regardless of the AV
selector keys.
• In the
position, the CD-RW output is fed to
CD-RW
the cassette and VCR inputs, regardless of the AV
selector keys.
9 EQ section
3 bands, each providing ±10 dB
at the following frequencies:
: 12 kHz (shelving)
HI
: 2.5 kHz (peaking)
MID
: 100 Hz (shelving)
LO
A AV source selector keys
these latching keys can be active (lit) at a time. Used
to select the AV source.
NOTE
If the REC MONITOR selection and the selection here
are the same, the source output is muted, to avoid a
feedback loop.
Also note that if an audio-only source has been selected
(CASSETTE, CD-RW or AUX IN on the AUDIO
ONLY setting), the last-selected video source will be
output through the video connectors.
7
Only one of
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