Alesis Studio 24 - Impedance; Noise Performance (Typical); Distortion (THD+N); Power

Specifications
9 8 STUDIO 24 REFERENCE MANUAL
MAXIMUM GAIN +76 dB, MIC IN to L/R outputs,
balanced
+70 dB unbalanced
+72 dB MIC IN to MON 1/2 OUT
+82 dB MIC IN to AUX 3-4 OUT
+85 dB, MIC IN to MONITOR OUT,
balanced.
CHANNEL PEAK LED ON: 6 dB below channel clipping
METER: Peak type
-24 dB to PK (+18 dB over reference at
L/R OUT, 5 dB before output clipping)
INSERT/DIRECT OUT (tip) Unity gain
INSERT IN (ring) Maximum level +18 dBu
IMPEDANCE
MIC IN 50-150 ohm nominal source impedance
(presents 3.8 k ohm load impedance)
LINE IN 50 Ω to 2 k Ω nominal (>22 k Ω load
impedance)
TAPE IN 50 Ω to 2 k Ω nominal (>16 k Ω load
impedance)
OUTPUTS (MAIN, GROUP, DIRECT,
AUX and MON): 150Ω unbalanced, 300Ω balanced
NOISE PERFORMANCE (TYPICAL)
Dynamic Range 111 dB (Mic/Line to Main L/R output)
Signal-to-noise ratio 88 dB (Mic/Line to Main L/R output)
MIC IN to INSERT OUT -129 dB Equivalent Input Noise at
maximum gain, 150Ω source
Mic output noise (minimum gain, 150Ω source, to INSERT)
-91 dBu
Mix Output Noise (faders at nominal, trims minimum, 150Ω source terminations):
16 channels assigned -83 dBu unbalanced, -77 dBu balanced
1 channel assigned -90 dBu unbalanced, -84 dBu balanced
DISTORTION (THD+N)
Measured with a 0 dBu signal into a MIC IN jack; TRIM set for +15 dBu output at INSERT
jack:
At INSERT jack: Better than 0.0010%
At MAIN OUT (+21 dBu): Better than 0.0015%
POWER
USA model: 120 VAC, 60 Hz 100 watts power
consumption maximum