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Appendix C: Technical Info
T•231 Specifi cations
Frequency Response
20 Hz to 20 kHz (+0, –1 dB)
20 Hz to 50 kHz (+0, –3 dB)
Audio Input
Type: Active balanced XLR
and 1/4" jacks
Unbalanced RCA jack
Impedance: 20 kΩ balanced
15 kΩ unbalanced
Maximum Input Level: +21 dBu balanced and
unbalanced
Audio Output
Type: Active balanced XLR and
1/4" jacks
Unbalanced RCA jack
Impedance: <600 Ω
Maximum Output Level:
+18 dBu
THD+N @ 1 kHz, +4 dBu:
0.02% @ 1 kHz
(all sliders at center position)
Noise and Hum, unity gain:
< –93 dBu
Crosstalk @ 1 kHz: < –103 dBu
Common Mode Rejection:
> 60 dB
Graphic EQ
Type: 1/3-octave Constant Q
Frequency Range: 20 Hz to 20 kHz
in 31 third-octave bands
(ISO center frequencies)
Sliders: 20 mm with center detent
Level: Off (∞) to +17 dB
Hi-Pass: 40 Hz @ 12 dB/octave
Low-Pass: 16 kHz @ 12 dB/octave
Bypass:
Bypasses the graphic equalizer,
Hi-Pass, and Low-Pass
fi lter sections
Range: ±6 dB or ±12 dB
Indicators
HI-PASS LED
LOW-PASS LED
CLIP LED
BYPASS LED
6 dB/12 dB Range LEDs
POWER LED
AC Power and Current Requirements
Power Consumption: 12.5 watts
AC Operating Voltages:
U.S. 120 VAC, 60 Hz
Europe 240 VAC, 50 Hz
Japan 100 VAC, 50/60 Hz
Korea 220 VAC, 60 Hz
Fuse: 315 mA @ 100-240 VAC
Physical Dimensions and Weight
Height: 3.5 in/89 mm
Width: 19.0 in/483 mm
Depth: 8.7 in/220 mm
Weight: 9.5 lb/4.3 kg
Disclaimer
Since we are always striving to make our products
better by incorporating new and improved materials,
components, and manufacturing methods, we
reserve the right to change these specifi cations at
any time without notice.