HB-MM31
Three-channel Microphone Mixer
The HB-MM31 is a professional three-channel microphone mixer for multi-element microphone or combine more audio inputs.
The three microphone inputs are XLRF-type balanced, with 48-volt phantom power available on pins 2 and 3. The outputs are XLRM-type balanced and RCA jack unbalanced terminated.
The HB-MM31 can be daisy-chained via 3.5mm stereo jack Link Cable on the rear panel. The result is that all microphones on a multi-mixer system can be controlled by one microphone connected to any mixer. Since all of the mixers are independently powered, there is no practical limit to number of the mixer that can be daisy-chained.
FEATURES
- Three balanced microphone level inputs.
- Both balanced and unbalanced line level outputs.
- The level of each microphone channel can be independently control via the front panel.
- Switchable 48V phantom power for condenser microphones.
- D-sub input connector for the special three elements microphone.
- Daisy-chained input to connect additional HB-MM31 for extra microphone inputs.
- Monitor headphone output with level control.
- Mute function with LED indicated in two color, external contact closure capability permits control of remote devices from the mute switch and TTL state outputs.
- Mounts in a half single 19" rack space via integral rack mount, and allows two units to be connected side-by-side in a single rack space.
SPECIFICATION
| Audio Specifications | |||
| Input Impedance | Mic. | 10kΩ, | |
| (Balanced) | Line | 12Ω | |
| XLR Output Impedance | Mic. | 320Ω, | |
| (Balanced) | Line | 200Ω | |
| RCA Output Impedance | 1 kΩ (Unbalanced) | ||
| Maximum Input Level | Mic. | -22dBu @ Min. Gain, | |
| (Balanced) | Line | +28dBu @ Min. Gain | |
| XLR Max. Output Level | Mic. | -27dBu (600Ω) @ Max. Gain, | |
| Line | +23dBu (600Ω) @ Max. Gain | ||
| RCA Max. Output Level | -13dBm @ -22dBu Input Level (Unbalanced) | ||
| Maximum Gain | 62dB | ||
| Frequency Response | 20Hz~20kHz @ +0dB, -1.2dB Points | ||
| THD+Noise | 0.03% Max. (From 20Hz~20kHz @ -22dBu) | ||
| Signal to Noise Ratio | 56dB | ||
| Headphone Output Level | 150mW (40Ω Load) | ||
| Input Attenuation | 10dB | ||
| Mic. / Line Input Pads | 50dB | ||
| Mic. Phantom Power | +48V DC | ||
| Operating Temp. | 0°C~40°C | ||
| Connections | |||
| Microphone Input | 3 × XLRF, D-sub 9-pin | ||
| Master Output | XLRM (Balanced), RCA (Unbalanced) | ||
| Link In / Output | 3.5mm TRS / Stereo | ||
| External Mute Switch | 4 Pin Mini-DIN | ||
| Headphone Output | 6.3mm TRS / Stereo | ||
| Power Requirement | 12V DC, 1A with AC Adapter | ||
| Physical Specification | |||
| Dimensions | W210 × H50 × D230 (mm) (Including Feet, Knobs and Connector) | ||
| Weight | 1.54kg (3.4lb.) | ||
| Included Accessories | AC Adapter, Link Cable, Rack Ears and 6 Screws | ||
| Optional Accessory | Double Rackmount Joining Plate | ||
