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Appendix C - US-224 Technical Specifications
General
Frequency Response
20 Hz - 20KHz 1.0 dB / -3.0 dB
LINE INPUT A/B to LINE OUTPUT
TRIM min., +4 dBu input
LINE OUTPUT level max.
Noise Level
Better than 92 dB A Weight
MIC INPUT A/B to LINE OUTPUT
TRIM min., 150 ohm terminated
LINE OUTPUT level max.
Signal Processing Delay
Less than 2 ms
MIC/LINE to LINE OUT Input Monitor
Fs = 44.1KHz
THD
Better than 0.01%
MIC INPUT A/B to LINE OUTPUT
0 dBu input TRIM min.
LINE OUTPUT level max.
LINE INPUT A/B to LINE OUTPUT
TRIM min., +20 dBu input
LINE OUTPUT level max.
Crosstalk
Better than 85 dB at 1KHz
LINE INPUT A/B to LINE OUTPUT
TRIM min., +4 dBu input
LINE OUTPUT level max.
Click: Less than -35 dBu
Fader Attenuation: Better than -90 dB at 1
KHz
Mute Level: Better than -90 dB at 1 KHz
Dimensions:
12" x 8.3" x 2.4" (30.4 x 21.1 x 6.2 cm)
Weight (unit itself): 0.85 Kg (1.9 lbs)
Power Consumption: 2W
MIC INPUT A/B
(Analog)
Connector: XLR-3-31
( 1:= GND, 2:= Hot, 3:= Cold ) : Balanced
Input Impedance: 2.2k ohm
Nominal Input Level (TRIM max.): -54 dBu
Nominal Input Level (TRIM min.): -16 dBu
Maximum Input Level: 0 dBu (TRIM min.)
LINE/GUITAR INPUT A/B (Analog)
Connector: 1/4"
(Tip:Hot; Ring:Cold; Sleeve:GND)
(Balanced at LINE, Unbalanced at GUITAR)
Input Impedance 22k ohm at LINE
680k ohm at GUITAR
Nominal Input Level (Trim max.):
-34 dBu at LINE
-48 dBV (-36.8 dBu) at GUITAR
Nominal Input Level (TRIM min.):
+4 dBu at LINE
- 10 dBV (-7.8 dBu) at GUITAR
Maximum Input Level (TRIM min):
+20 dBu at LINE
+6 dBV (+8.2 dBu) at GUITAR
LINE OUTPUT (Analog)
Connector: RCA pin jack, Unbalanced
Output Impedance: 100ohm
Nominal Output Level: -10 dBV (-7.8 dBu)
(LINE LEVEL -10dB)
Maximum Output Level: +6 dBV (+8.2 dBu)
(LINE LEVEL max)
PHONES output (Analog)
Connector: 1/4" TRS Stereo
(Tip:L, Ring:R, Sleeve:GND)
(when nominal impedance 40 Ohms loaded)
Maximum Output Power: 10m W + 10m W
Maximum Output Level: +6 dBV (+8.2 dBu)