Specifications

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Converge Pro 840T
Audio Performance
Conditions: Unless otherwise specified, all
measurements are performed with a 20 Hz to 20 kHz
BW limit (no weighting)
Frequency Response: 20 Hz to 20 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 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
Matrix Mixing Parameters
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
Category 5 twisted-pair cable, 200’ maximum cable
length between any two Converge Pro devices
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