Tascam AV-452 User guide

10/10/03
Page 1of 4
AV-452 Applications Guide
˘Four phantom-powered
microphone inputs on
XLRs and barrier strip
˘Three-band EQ, level,
gain and mute controls
for each of the four micro-
phone inputs and the A/V
buss.
˘Selectable 100Hz rolloff
on microphone inputs
˘Audio I/O for Cassette,
CD-RW, DVD, VCR and Aux
˘Composite and S-Video
I/O for DVD, VCR and Aux
˘RGB In/Thru port for con-
nection convenience
˘Switchable Cascade input
allows multiple rooms to
be linked together
˘Stereo digital amplifier
delivers 100W/side at 8
ohms
˘Learning IR blaster with
universal remote sends
infrared commands to
projectors and other
devices when inputs are
selected
˘Record monitor selection
allows dubbing between
A/V devices
˘Motorized master volume
control
AV-452 Presentation Mixer/Amplifier
Designed for the special needs
of meeting rooms, conference halls,
churches and other presentation ap-
plications, the TASCAM AV-452 is an
all-new mixer created for the needs
of the contracting and installation
market. The AV-452 incorporates a
microphone mixer, audio/video re-
ceiver, infrared controller and digital
amplifier into one affordable, easy-
to-use component.
As presentation systems and
software have become more popular,
bing. As devices are selected on the
AV-452,IR commands can automatically
be forwarded to the video projector, so
the presenter only needs to press one
switch to change sources.
The built-in 100W digital power amp
has two switchable speaker outputs, fa-
cilitating installations in multi-room
setups. The AV-452 can also be cascaded
for even more control over multi-room
installations.
Professional installers will appre-
ciate features that make the AV-452
easy to specify and install. A
constant voltage
input with noise
gate allows a pag-
ing system to co-
exist on the same
speaker system
as the AV-452. An
EMG break can mute
local audio when an emergency alarm
system is activated, allowing the
AV-452 to integrate with common
building communication systems.
The AV-452 offers a list of conve-
nience features for the presenter, from
a VGA In/Thru port for laptop connec-
tions to a learning IR remote. For even
more control,the installer can connect
relay switches to a parallel port, or con-
nect an AMX™ or Crestron™ system to
its’ RS-232/422/485 port.
Since A/V systems only enhance a
presentation when they run smoothly,
the AV-452’s most important feature
is to help the presenter. It helps the
speaker operate their presentation
as one complete unit, increasing their
confidence and allowing them to focus
on what they do best.
A/V presentations have become routine
for middle management, educators and
other public speakers.With its universal
learning remote and IR blaster func-
tions, the AV-452 is designed to control
a sophisticated A/V system as a single,
integrated unit.
The AV-452 was designed primar-
ily to assist with switching audio and
video sources and to allow presenters
to be heard. Four microphone inputs
are available on XLR and barrier strips,
enough for multiple presenters and au-
dience participation. Each microphone
inputhas three-bandEQ,level andmute
controls,and the installer can switch on
a 100Hz rolloff on the mic group.
The five A/V inputs are provided for
cassette, CD-RW, DVD, VCR and Aux de-
vices. The A/V inputs include S-Video
and Composite video, and sources can
be routed to other destinations for dub-

RGB 1
AMP A&B (L/R)
MIC PANELS
TO MIC INPUTS
INTERCOM
INPUT
CONSTANT VOLTAGE
SPEAKER SYSTEM
COMPOSITE
S-VIDEO,
& RGB 2
DVD
CASSETTE
& CD-RW
WIRELESS
MICS
ROOMVOLUME
ROOMVOLUME
RGB1
RGB1
RGB2
RGB2
CASSETTE
CASSETTE
RECMONITOR
DIMMUTEMUTEMUTEMUTE
MIC 1 MIC 2
AV-452 MIC3 MIC 4 AV
SOURCE
CD-R
CD-R
WCASS
CASS
AUDIOONL
AUDIOONL
Y
AUDIOVIDEO
AUDIOVIDEO
CD-RW
DVD
VIDEO L R
AUXIN
AUXIN
AUXIN RGB2 IN
RGB2 IN
PHONES
PHONES
AMPAINTERCOM
INTERCOM
AMPBCASCADEIN
CASCADEIN
VCR
VCR
EQ
HI
MID
MID
LO
EQ
HI
MID
MID
LO
EQ
HI
MID
LO
EQ
HI
MID
LO
LO
EQ
HI
MID
MID
LO
OL
GAIN OL
GAIN
OL
GAIN
OL
GAIN
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
ROOM A
RGB 1
ROOM B
AMP A
MIC PANELS
TO MIC INPUTS
INTERCOM
INPUT
CONSTANT VOLTAGE
SPEAKER SYSTEM
COMPOSITE
S-VIDEO,
& RGB 2
AMP B
DVD
CASSETTE
& CD-RW
WIRELESS
MICS
ROOMVOLUME
ROOMVOLUME
RGB1
RGB1
RGB2
RGB2
CASSETTE
CASSETTE
RECMONIT
RECMONIT
OR
DIM
DIM
MUTEMUTEMUTEMUTE
MIC 1 MIC 2
AV-452 MIC3 MIC 4 AV
SOURCE
CD-R
CD-R
W CASS
AUDIOONLY
AUDIOVIDEO
CD-RW
DVD
VIDEO L R
AUXIN
AUXIN
AUXIN
AUXIN
RGB2 IN
RGB2 IN
PHONES
AMPAINTERCOM
INTERCOM
AMPBCASCADEIN
VCR
EQ
HI
MID
LO
EQ
HI
MID
LO
EQ
HI
MID
LO
EQ
HI
MID
LO
EQ
HI
MID
LO
OL
GAIN
GAIN
OL
GAIN
OL
GAIN
OL
GAIN
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10/10/03
Page 2of 4
AV-452 Applications Guide
Single Room Setups
Dual Room Feed
This simple setup shows the AV-452 at the cen- ter of a single room setup. This is a common
arrangement for boardrooms, small churches and
school presentation rooms. Mic panels in the walls
allow up to four microphones to be connected to the
AV-452, or wireless microphones can be connected
in their place. The DVD player and Cassette/CD-RW
combo are connected to their dedicated inputs and
can be switched from the AV-452’s front panel or
learning remote control.
The AV-452’s internal 100W amplifier provides
power for the distributed speaker system. A con-
stant voltage input allows the building’s intercom
system to be wired directly into the mixer, so the
presenter can turn off background music during
presentations. A gate on the CV line can still pass
announcements and emergency alerts.
In this case, the AV-452 functions not only as
a small PA and A/V amplifier, but also as a video
switcher and master controller for the system.
Hotelconference rooms commonlyemploy fold- ing partitions so that the room can be divided
for two smaller events. A hotel with modest needs
can use a single AV-452 in this joined setup.
The A/V equipment is placed in Room A,and will
only be available in that room. When the partitions
are open, both Amp A and Amp B are switched on
from the AV-452’s front panel. When a small group
needs to use room B and the partition is closed,
Amp B is switched off. The installer can even wire
a toggle switch to the wall in room B to switch that
room’s amplifier off on the AV-452.
If the client needs two stereo feeds for mul-
timedia presentations with this setup, you can
add an external power amplifier for room A, use
the internal amps for room B, and have the same
individual control over the two rooms.

MIC PANELS
TO MIC INPUTS
RGB 2
S-VIDEO
COMPOSITE
RGB 1
AMP B
AMP A
INTERCOM
INPUT
CONSTANT VOLTAGE
SPEAKER SYSTEM
ST OUT
DVD
CASSETTE
& CD-RW
WIRELESS
MICS
CONFERENCE
ROOM PATIO
LADIES
RESTROOM
HALL
MENS
RESTROOM
CLIP CLIP
POWER
STEREOAMPLIFIER
ROOMVOLUMERGB 1
RGB1
RGB2
RGB2
CASSETTE
RECMONIT
RECMONIT
OR
OR
DIMMUTEMUTEMUTEMUTE
MIC 1 MIC 2
AV-452 MIC3 MIC 4 AV
SOURCE
SOURCE
CD-RW CASS
AUDIOONL
AUDIOONL
Y
AUDIOVIDEO
AUDIOVIDEO
CD-RW
DVD
DVD
VIDEO L R
AUXIN
AUXIN RGB 2 IN
RGB2 IN
PHONES
AMP
AMP
AINTERCOM
INTERCOM
AMPBCASCADEIN
VCR
EQ
HI
MID
MID
LO
EQ
HI
MID
LO
EQ
HI
MID
LO
EQ
HI
HI
MID
LO
EQ
HI
MID
LO
OL
GAIN OL
GAIN
OL
GAIN
OL
GAIN
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
ROOM A
RGB 1
RGB 2,
S-VIDEO
COMPOSITE
RGB 2,
S-VIDEO
COMPOSITE
RGB 1
ROOM B
AMP A&B (L/R)
STEREO OUT TO
CASCADE IN
MIC PANELS TO
MIC INPUTS
MIC PANELS TO
MIC INPUTS
CONSTANT VOLTAGE
SPEAKER SYSTEM
CONSTANT VOLTAGE
SPEAKER SYSTEM
DVD
CASSETTE
& CD-RW
CASSETTE
& CD-RW
DVD
WIRELESS
MICS
AMP A&B (L/R)
ROOMVOLUME
ROOMVOLUME
RGB1
RGB2
CASSETTE
CASSETTE
RECMONIT
RECMONIT
OR
DIMMUTEMUTEMUTEMUTE
MIC1 MIC2
AV-452 MIC3 MIC4
MIC4
AV
SOURCE
SOURCE
CD-RW CASS
CASS
AUDIOONL
AUDIOONL
Y
AUDIOVIDEO
AUDIOVIDEO
CD-RW
DVD
VIDEO L R
AUXIN
AUXIN
AUXIN
AUXIN
RGB2 IN
RGB2 IN
PHONES
AMPAINTERCOM
INTERCOM
AMPBCASCADEIN
VCR
EQ
HI
MID
LO
EQ
HI
MID
MID
LO
EQ
HI
MID
LO
EQ
HI
MID
LO
EQ
HI
MID
LO
OL
GAIN
GAIN
OL
GAIN
OL
GAIN
OL
GAIN
GAIN
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
ROOMVOLUME
ROOMVOLUME
RGB1
RGB1
RGB2
RGB2
CASSETTE
RECMONIT
RECMONIT
OR
DIMMUTE
MUTE
MUTEMUTE
MUTE
MUTE
MIC1 MIC2
AV-452 MIC3 MIC4 AV
SOURCE
CD-RW CASS
AUDIOONL
AUDIOONL
Y
AUDIOVIDEO
AUDIOVIDEO
CD-RW
DVD
VIDEO
VIDEO
L R
AUXIN
AUXIN
AUXIN
RGB2 IN
RGB2 IN
PHONES
PHONES
AMPAINTERCOM
INTERCOM
AMP
AMP
B
B
CASCADEIN
CASCADEIN
VCR
EQ
HI
MID
LO
EQ
HI
MID
LO
EQ
HI
MID
MID
LO
EQ
HI
MID
MID
LO
EQ
HI
MID
LO
OL
GAIN OL
GAIN
GAIN
OL
GAIN
GAIN
OL
GAIN
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10
9
8
7
6
5
4
3
2
1
0
10/10/03
Page 3of 4
AV-452 Applications Guide
Two Cascaded Rooms
Single Room in Multiple Zones
Similar to the previous example,this installation shows a hotel conference room with a center
divider. The difference with this installation is that
each room has its own A/V setup. When the two
rooms are joined together, the Cascade button is
pressed on the mixer in room B. This button over-
rides the rest of the settings on the AV-452 in room
B and instead amplifies the signal from room A.
Both rooms in this example play their audio back
in stereo.
Other applications of the Cascade function
include the ability to use an external submixer
or microphone mixer for large presentations. In
this mode, the AV-452 amplifies the signal from
the Cascade input in addition to its four mic inputs
and A/V components.
It’s not uncommon for a large presentation hall to need amplification for several zones. Some
examples of exterior zones may be the hallway
outside of a presentation, the restrooms and the
outdoor patio.
In this setup, the AV-452 is connected to a power
amplifier for use in the main room. The internal
Amp A and Amp B in the AV-452 power the hall-
way and patio zones. If the presenter doesn’t want
his presentation to play in those zones, they can
be turned off without effecting the sound inside
of the room by pressing the Amp A and Amp B
switches.
In this installation, the AV-452’s amplifiers are
set to mono,but the presentation in the main room
still plays through the power amp in stereo. Like
each of the other installations, the presenter has
instant control over his or her audio and video
sources, and can even switch the projector’s source
from the AV-452’s front panel, learning remote
control or toggle switch controls installed on the
lectern.

10/10/03
Page 4of 4
AV-452 Applications Guide
7733 Telegraph Rd • Montebello, CA • 90640 • phone [phone] • www.tascam.com
AV-452 Connections
© 2003 TEAC Corporation All trademarks are the property of their respective holders. All rights reserved. Design and specifications
subject to change without notice. Product photographs are shown only to illustrate the types of product which are compatible with
the TASCAM AV-452. These products are not manufactured by the TASCAM Division of TEAC Corporation.
˘Stereo RCA Cassette Input
˘Stereo RCA Cassette Output
˘Stereo RCA CD-RW Input
˘Stereo RCA CD-RW Output
˘Stereo RCA VCR Input
˘Stereo RCA VCR Output
˘Stereo RCA DVD Input
˘Stereo RCA Meeting Record Output
˘(4) XLR-F Microphone Inputs
˘Barrier Strip for four microphone inputs
and Intercom input
˘Stereo XLR Output
˘Stereo XLR Cascade Input
˘Banana Plug Amp A Output
˘Banana Plug Amp B Output
˘Composite and S-Video Monitor Output
˘Composite and S-Video VCR Input
˘Composite and S-Video VCR Output
˘Composite and S-Video DVD Input
˘HD15 RGB 2 Thru
˘DB37 Parallel Control
˘DB9 for RS-232/422/485 control
˘Power Input and Voltage Selector