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Audio Conferencing
The Audio Perfect®800 (AP800) provides high-quality
audio for conferencing applications. The AP800 contains
Distributed Echo Cancellation
®
(DEC) technology, micro-
phone mixing, audio processing, and matrix mixing
–
all
in a single rack unit system.
DEC technology is vastly superior to system-wide
echo cancellation because it eliminates the gating and
audio processing problems that continually hamper such
systems. DEC results in highly reliable, clear, transparent
audio for use in the most demanding environments.
Each of the unit’s eight mic/line inputs and four auxiliary
line inputs can compensate for loud or soft voices using
automatic gain control (AGC). It also offers channelized
equalization for continuous cut or boost as well as high-pass
filtering to reduce unwanted low-frequency noise.
The AP800 provides extreme flexibility for your
applications. Each unit provides eight microphone/line
inputs, four auxiliary line-level inputs, and 12 auxiliary
line-level outputs. These outputs are ideal for audio
sources such as codecs, AP10 telephone interfaces, external
PAs, sound reinforcement, VCRs, and CD players.
For conferencing applications where you need significant
microphone coverage or multiple telephone line conferencing, up to eight AP800 units and 16 AP10 units can
be linked together using ClearOne’s high speed G-Link
• Distance Learning
• Teletraining
• Telemedicine
• Courtrooms
• Conference Rooms
• Boardrooms
• Hotels
• Houses of Worship
digital network bus. All G-Linked devices can be controlled and upgraded via a single RS-232 connection.
Set-up and configuration are simple and can be
accomplished in one of two ways: 1) Using the AP800’s
front panel and LCD display, or 2) Via ClearOne’s
AP-Ware™ configuration software on a connected PC.
When any of the six available presets are customized, you
can access them on the fly from a remote touch panel
(such as AMX or Crestron), a custom control device, or
the unit’s front panel.
Features and Benefits
• Truly linkable–the AP800, via the G-Link high-speed
digital bus, allows for system expansion to accommodate
applications requiring up to 64 microphones. All system
parameters (gating, NOM, chairman override, PA
adaptive, etc.) are linked and function as one system.
• All eight inputs incorporate automatic gain control
(AGC)
–
to compensate for loud or soft voices.
• Matrix
–
allows for simple routing customization for a
wide variety of applications and individual customer
requirements.
• Easy “plug and play” echo cancellation
–
easy to pro-
gram, and maintain.
• On-the-fly configuration changes
–
six configurable presets can be accessed from a touch panel, custom control
device, or the front panel.
• Full-duplex audio
–
for clean, transparent audio.
• One rack unit performs the function of several external
audio devices
–
audio functions are designed to work
together as a complete audio conferencing system.
• AP-Ware software
–
an advanced, reliable configuration
system that makes programming the AP800 simple.
The AP800 provides eight mic/line inputs, four
line-level inputs, and 12 line-level outputs.
Applications
AP800 Audio Conferencing System
The AP800 is manufactured and marketed by
ClearOne, formerly Gentner.
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Specifications
© 2002 ClearOne Communications, Inc. All rights reserved. Information in this document subject to change without notice. 802-150-001 Revision 2.0
ClearOne Communications ~ 1825 Research Way, Salt Lake City, UT 84119 ~ 1-800-945-7730 ~ www.clearone.com
Dimensions (LxDxH)
17.25" x 10.25" x 1.75"
43.8 x 26 x 4.5 cm
Weight
7 lb/4.5 kg dry
12 lb/5.9 kg shipping
Operating Temperature
32–100° F/0–38° C
Humidity
15% to 80%, non-condensing
Power Input Range
Auto-adjusting
100–240VAC; 50/60Hz
Power Consumption
30W typical
G-Link In/Out
Proprietary Network
RJ-45 (2), 38.4kbps,
110kΩ impedance
Category five twisted-pair cable
20' (6 meters) maximum cable length
between any two Audio Perfect
products
RS-232
DB-9 female
9,600 (default)/19,200/38,400
baud rate; 8 bits, 1 stop, no parity
Hardware flow control on (default)/off
Control/Status
DB-25 female A/B (2)
Inputs A/B: active low (pull to ground)
Outputs A/B: Open collector, 40VDC
max, 40mA each
+5VDC pins (2) (300mA
over-current protected)
Mic/Line Inputs 1-8
Push-on terminal block, balanced,
bridging
Impedance: 5kΩ
Nominal Level: adjustable -55dBu,
-25dBu, 0dBu
Maximum Level: -33dBu, -4dBu,
+20dBu
Echo Cancellation: 120ms tail time
(works with 12dB of room gain)
Phantom Power: 24V, selectable
Line Inputs A-D
Push-on terminal block, balanced,
bridging
Impedance: >20kΩ
Nominal Level: 0dBu
Maximum Level: 19dBu
Outputs 1-12
Push-on terminal block, balanced
Impedance: 50Ω
Nominal Level: 0dBu
Maximum Level: 19dBu
Audio Performance
Conditions: Unless otherwise specified,
all measurements are performed with
a 22Hz to 22kHz BW limit
(no weighting).
Frequency Response: 20Hz–15kHz
±2dB
Noise (EIN): -125dBu, 15kHz BW,
max gain, Rs=150Ω
THD+N: <0.1%
SNR: 65dB re 0dBu
Dynamic Range: 85dB
Approvals
FCC, CSA, CE
Matrix Mixing Parameters
12x12 matrix
Auto Mixer Parameters
Number of Open Microphones (NOM)
PA Adaptive Mode
First Mic Priority Mode
Last Mic Mode
Maximum # of Mics Mode
Ambient Level
Gate Threshold Adjust
Off Attenuation Adjust
Hold Time
Decay Rate
Microphone Input Configuration
Input Gain Adjust
Mic or Line Level
Phantom Power on/off
Echo Cancellation on/off
Mute on/off
Chairman Override on/off
High Pass Filter
EQ Adjust
AGC on/off
Auto Gate/Manual Gate/Gate override
Adaptive Ambient on/off
Set-up Software
AP-Ware
audio conferencing
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