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Mixer Bộ trộn âm thanh Shure SCM268
The Shure SCM268 4-Channel Microphone Mixer offers simplicity and routing flexibility in a convenient, compact, and rugged enclosure. The SCM268 features 4 high quality transformer-balanced XLR inputs and mic/line level switchable XLR output. Transformer balanced I/O provides maximum audio gain, minimizing hum and line noise. Two stereo paired (4 mono) RCA inputs except line level signal from consumer audio devices such as CD and cassette players, DVD players, VCR’s etc.
Also provided is an additional, independent AUX line level input with level control via a single RCA connector. Six sealed rotary pots provide level control for mic channels 1 through 4, AUX input channel and Master. The SCM268 also provides 12V phantom power for condenser microphones.
Quality Inputs
Features 4 balanced XLR mic preamps resulting in high input gain and low noise floor.
AUX Line Inputs
4 additional line level inputs via RCA connectors are provided. These inputs are perfect for adapting consumer level devices such as CD and cassette players, audio from VCR’s etc.
12V Phantom Power
The SCM 268 provides 12V phantom power for condenser microphones.
Compact Rugged Design
The SCM 268’s rugged, compact design provides maximum portability without sacrificing the ruggedness.
Mixer Bộ trộn âm thanh Shure SCM268
Thông số kỹ thuật Mixer Bộ trộn âm thanh Shure SCM268
| Inputs | 4 – Balanced XLR Microphone 2 – Stereo (L/R) RCA line inputs |
| Output | 1 – Balanced XLR output (mic/line level) 1 – AUX unbalanced RCA Phono |
| Monitor/Headphone Out | No – AUX output serves as secondary output and cab be used as a monitor source |
| ALT I/O | 2 – AUX RCA phono as described under outputs |
| Link Input/Output | No |
| Impedance | Input MIC (XLR): Designed for use with 19-600 ohm load, 1.2k ohms actual, -5dBV clipping level AUX: Designed for use with – / < 2k ohm load, 21k ohms actual, >28 dBV clipping level Outputs MIC: Designed for use with low-Z inputs, 0.2 ohms actual, -21 dBV clipping level LINE: Designed for use with > 600 ohms, 72 ohms actual, +18 dBV clipping level AUX: Designed for use with > 2k ohms, 870 ohms actual, +7dBV clipping level |
| Gain | Low-Impedance Mic Input (150 ohms): MIC 32dB, LINE 72dB, AUX 60dB – Outputs Line Input: MIC -9dB, LINE 31dB, AUX 19dB – Outputs Stereo Input: MIC -5dB, LINE 35dB, AUX 23dB – Outputs |
| Hum & Noise | Equivalent Input Hum and Noise: -124 dBV (150 ohm source; 22Hz to 22kHz) Output Hum and Noise: (22 Hz to 22kHz; channel controls full counterclockwise) Master full counterclockwise -92dBV Master full clockwise -70dBV |
| Frequency Response | (Ref 1kHz, channel and master controls centered) MIC/LINE Inputs: 150Hz to 20kHz + / – 2dB AUX Inputs: 20Hz to 20kHz + / -2dB |
| Distortion | <0.25% at +4 dBu output level, (through 22Hz -22kHz filter; MIC inout 1 and Master at center, all other controls full counterclockwise) |
| Metering | 6-segment LED meters |
| Controls | Sealed Rotary Potentiometers: MIC 1-2, STEREO 1-3 and MASTER gain controls. BASS and TREBLE control. DIP Switches |
| Control Voltage Out | No |
| Phantom Power | 12 Vdc open-circuit through 340 ohm series resistors |
| Operating Temperature | Operating: -7 to 49 degrees C (20 to 120 degrees F) Storage: -29 to 74 degrees C (-20 to 165 degrees F) |
| Power | SCM268: 100 – 120 Vac, 50/60 Hz, 60mA SCM268E: 220 – 240 Vac, 50/60 Hz, 30mA |
| Dimensions | 43 x 218 x 162mm |
| Weight | 1.20 kg |
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