Converge pro 840t – ClearOne Converge Pro User Manual
Page 260
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Converge Pro 840T
Audio Performance
Conditions: Unless otherwise specified, all
measurements are performed with a 20 Hz to 22 kHz
BW limit (no weighting)
frequency Response: 20 Hz to 22 kHz ±1dB
noise (ein): -126 dBu, 20 kHz BW, max gain,
Rs=150 Ω
THd+n: <0.02%
dynamic Range: 100 dB (non a-weighted)
Crosstalk <-91 dB re 20 dBu @ 20 kHz channel to
channel
Auto Mixer Features
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
Matrix Mixing Features
29x30 matrix
8 analog in/out
1 speaker out (amplified)
12 expansion bus in/out
4 assignable processing blocks in/out
4 assignable fader blocks in/out
1 telco in/out
Assignable Processing Blocks
filters
all pass
Low pass
High pass
Low shelving
High shelving
parametric eQ
notch
Cd Horn
Crossovers
Bessel
Butterworth
Linkwitz-Riley
Compressor
delay; adjustable up to 250 ms
Assignable Fader Blocks
Gain/Mute
Microphone Input Configuration
input Gain adjust
Mic or Line Level
phantom power on/off
echo Cancellation on/off
noise Cancellation on/off
filters
all pass
Low pass
High pass
notch
peQ
Mute on/off
Chairman override on/off
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aGC on/off
automatic Level Control on/off
auto Gate/Manual gate
adaptive ambient on/off
pre aeC channel
Mic/Line Inputs 1-4
push-on mini-terminal block, balanced, bridging
Impedance: < 5 KΩ
nominal Level: adjustable -56 dBu to 0 dBu (7 dB step
coarse gain adjustment)
Maximum Level: -65 dBu to +20 dBu
echo Cancellation: 130 ms tail time (works with 12 dB
of room gain)
noise Cancellation: 6–15 dB attenuation
phantom power: 24 V, selectable
Line Inputs 5-8
push-on mini-terminal block, balanced, bridging
Impedance: < 5 KΩ
nominal Level: 0 dBu
Maximum Level: 20 dBu
outputs 1-8
push-on mini-terminal block, balanced
Impedance: < 50 Ω
nominal Level: 0 dBu
Maximum Level: 20 dBu
Amplifier output
Binding post Connection
10 Watts @ 4 Ω Impedance
THd + noise: < 0.5%
Telco Line
RJ-11
poTS (plain old telephone service) or analog extension
from a pBx
a-lead supervision provided
Telco Set
RJ-11
poTS (plain old telephone service) or analog extension
from a pBx
a-lead supervision provided
Telephone Audio Performance
Conditions: Unless otherwise specified, all
measurements are performed with Transmit Limiter and
Receive aLC disabled
frequency Response: 250Hz to 3.3 kHz ±1dB
THd+n: <0.3% re-max level 250 Hz to 3.3 kHz
SnR: > 62 dB re-max level
Telco Line echo Cancellation
Tail Time: 31 ms
null: 55 dB nominal
Telephone noise Cancellation
noise Cancellation 6-15 dB attenuation
expansion Bus In/out
proprietary network
RJ-45 (2), 1.9 Mbps
CaT-5 twisted-pair cable, 200’ maximum cable length
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