| Specifications |
| Frequency Response (Ref 1 kHz, controls centered) |
Microphone Inputs: 150 Hz to 20 Khz + 2 dB (built-in 80 Hz low-cut)
Auxiliary Inputs: 20 Hz to 20 kHz + 2 dB |
| Low-Cut Filter (Microphone inputs only) |
3dB down at 80 Hz, 6 dB/octave |
| Gain (typical, controls full clockwise) Output Mic |
| Low-impedance mic (150 O) |
38 dB |
| Aux Level |
3 dB |
| Gain (typical, controls full clockwise) Output Line |
| Low-impedance mic (150 O) |
76 dB |
| Aux Level |
40 dB |
| Gain (typical, controls full clockwise) Aux Out |
| Low-impedance mic (150 O) |
65 dB |
| Aux Level |
29 dB |
| Output Impedance Mic |
| low-Z inputs |
0.2 O |
-21 dBV |
| Output Impedance Line |
| >600 O |
72 O |
+18 dBV |
| Output Impedance Aux Out |
| >2 kO |
870 O |
+7 dBV |
| Outputs |
| Total Harmonic Distortion |
<0.25% at +4 dBu output level (through 22 Hz–22 kHz filter; Input
1 and Master centered, all other controls full counter clockwise) |
| Hum and Noise |
(150 O source; through 22 Hz–22 kHz filter)
Equivalent Input Hum and Noise: –124 dBV |
| Output Hum and Noise |
(through 22 Hz–22 kHz filter; channel controls full counterclockwise)
Master full counterclockwise: –92 dBV
Master full clockwise: –70 dBV |
| Common Mode Rejection |
>80 dB at 1 kHz |
| Polarity |
All inputs to all outputs are non-inverting |
| Overload and Shorting Protection |
Shorting outputs, even for prolonged periods, causes no damage
Microphone inputs are not damaged by signals up to +10 dBV;
Auxiliary inputs by signals up to +36 dBV |
| |
| Phantom Power |
12 Vdc open-circuit through 340O series resistance |
| Operating Voltage |
SCM268: 100-120 Vac rated nominal, 50/60 Hz, 60 mA
SCM268E: 220-240 Vac rated nominal, 50/60 Hz, 30 mA |
| Temperature Range |
Operating: –7° to 49° C (20° to 120° F)
Storage: –29° to 74° C (–20° to 165° F) |
| Overall Dimensions |
44 mm H x 218 mm W x 162 mm D
(1.72 x 8.60 x 6.37 inches) |
| Net Weight |
1.20 Kg (2 lbs, 10 oz) |
| Certifications |
SCM268: UL & cUL Listed by Underwriters Laboratories, Inc.
SCM268E: Eligible to bear CE Marking. Conforms to European
EMC Directive 89/336/EEC. Meets applicable tests and performance criteria in European Standard EN55103 (1996) parts 1
and 2, for residential (E1) and light industrial (E2) environments. |
| REPLACEMENT PARTS |
| Knob, Master (blue) |
95B8752 |
| Knob, Channel Gain (white) |
95A8752 |
| Line (Power) Cords (SCM268E: 220-240 Vac (EU)): |
95A8778 |
| Fuse, SCM268 (5x20 mm, 250V, 80mA, slow-blow) |
80A730 |
| Fuse, SCM268E (5x20 mm, 250V, 40mA, slow-blow) |
80J258 |
| Hardware Kit |
90AA8100 |
| Link Bars (Bracket) |
53A8443 |
| Single Mount Kit |
53A8484 |
| Dual Mount Kit |
53B8484 |
| Optional Accessories Line (Power) Cord,
230-240 Vac (UK) |
95A8713 |
| Line (Power) Cord, 230-240 Vac (UK) |
95A8713 |