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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=150Ω•
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•
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:<5KΩ•
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:<5KΩ•
Nominal Level: 0 dBu•
Maximum Level: 20 dBu•
Outputs 1-8
Push-on mini-terminal block, balanced•
Impedance:<50Ω•
Nominal Level: 0 dBu•
Maximum Level: 20 dBu•
Amplifier Output
Binding Post Connection•
10Watts@4ΩImpedance•
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•