TECHNICAL SPECIFICATIONS
FREQUENCY RESPONSE: All inputs: 20 Hz – 22 kHz (±1 dB)
THD+N: All inputs: < 0.005% (@ 4 dBu, 1 kHz)
GAIN RANGE: Mic inputs (Channels 1-2): 0 – 50 dB
Line inputs (Channels 1-2): 15 dBu – 35 dBu
Line inputs (Channels 3-6): -20 dBu – +20 dBu
MAX VOLTAGE GAIN: 70 dB (MIC INPUT to MAIN MIX OUTPUT)
80 dB (MIC INPUT to CTRL ROOM / PHONES OUPTUT)
60 dB (MIC INPUT to AUX SEND)
SNR: All inputs: >
110 dBu
PHANTOM POWER: +45 ~ +49V with switch control (Mic Pin2/Pin3 and Pin1)
IMPEDANCE: Mic inputs: 3.9 kΩ
All other inputs: > 10 kΩ
Aux outputs: 1 kΩ
All outputs: 120 Ω
EQUALIZATION: High: ±15 dB @ 12 kHz
Mid: ±15 dB @ 2.5 kHz
Low: ±15 dB @ 80 Hz
CROSSTALK: Adjacent inputs: < -80 dB @ 1 kHz
Inputs to outputs: < -75 dB @ 1 kHz (stereo L/R, Channels 1-2, panned hard left
or right)
MAIN MIX: AUX OUTPUT, PHONES OUTPUT: 0 dBu, unbalanced, 1/4" jacks
Max output: +22 dBu, unbalanced, 1/4" jacks
Bus noise: < -90 dB @ 20 Hz ~ 22 kHz (Channel and Main Mix levels at 0 dB,
others at minimum)
POWER SUPPLY: 18 V, 1000mA
POWER CONSUMPTION: 18 W
DIMENSIONS ( W x D x H ): 8" x 9.8" x 2.3" (202 mm x 250 mm x 58 mm)
WEIGHT: 3.8 lbs (1.7 kg)
* Specifications are subject to change without notice.
Under rare circumstances, if this product is exposed to electromagnetic interference during use, there may be a slight drop in
signal-to-noise ratio.
This unit is well designed to prevent any inrush current.
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www.altoprofessional.com
MANUAL VERSION 1.4
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