Measurement Conditions (unless otherwise specified) | Line voltage 120 Vac, 60 Hz (SCM410) or 230 Vac, 50 Hz (SCM410E); full gain; 1 kHz, one channel activated; source impedances= Mic 150 ohms; terminations= Line/Mic Aux 10 kilohms |
Frequency Response (at 1 kHz, channel controls centered) | 50 Hz to 20 kHz /- 2 dB; -3 dB corner at 25 Hz |
Voltage Gain (typical, controls full clockwise) | Input= Low-impendance mic (150 O), Output Line= 80dB, Output Mic= 40dB, Output Aux= 68dB |
Inputs | Input= Mic, Impendance Designed for use with= 19-600 O, Impendance Actual (typical)= 1.4kO, Input clipping Level= -14dBV |
Outputs | Output= Line, Mic, Aux; Impendance Designed for use with= .5kO, .600 O, .10kO; Impendance Actual (typical): 300 O, 3 O, 1.5kO; Output Clipping Level: 24dBV, -18dBV, 14dBV |
Total Harmonic Distortion (through 22 Hz – 22 kHz filter; Input at 12 o' clock and Master at 12 o' clock, all other controls full counterclockwise) | < 0.1% at 4 dBu output level, 50 Hz to 20 kHz |
Hum and Noise (150 O source; through 22 Hz – 22 kHz filter) | Equivalent Input Hum and Noise: –123 dBV max., –125 dBV typical |
Output Hum and Noise (channel controls full counterclockwise) | Master full counterclockwise= –90 dBV; Master full clockwise= –70 dBV |
Common Mode Rejection | >70 dB at 1 kHz |
Polarity | All inputs to all outputs are non-inverting |
Input Channel Activation | Attack Time= 4 ms; Hold Time= 0.4 s; Decay Time= 0.5 s |
Off-Attenuation | 13 dB |
Overload and Shorting Protection | Shorting outputs, even for prolonged periods, causes no damage. Microphone inputs are not damaged by signals up to 10 dBV (3V) |
Equalization | Low–frequency= 6 dB/octave cut, adjustable corner from 25 to 320 Hz; High–frequency= 6 dB at 5 kHz, 8 dB at 10 kHz, shelving |
Limiter | Type= Peak; Threshold= 16 dBu (at output); Attack Time= 2 ms; Recovery Time= 300 ms; Indicator= Lights red when limiting occurs |
Input LEDs | Green on channel activation, red at 6 dB below clipping |
Phantom Power | 12 Vdc open-circuit through 680 O resistors |
Operating Voltage | SCM410= 100-120 Vac rated nominal, 50/60 Hz, 100 mA (maximum); SCM410E= 220-240 Vac rated niminal, 50/60 Hz, 50 mA (maximum) |
Mains Inrush Current (230 Vac, SCM410E only) | 0.7 A peak |
Operating Temperature Range | –7° to 49° C (20° to 120° F ) |
Storage Temperature Range | –29° to 74° C (–20° to 165° F) |
Overall Dimensions | 44 mm H x 219 mm W x 267 mm D (1 3/4 x 8 5/8 x 10 1/2 in.) |
Net Weight | 1.75 kg (3.86 lbs) |