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The 7700ADA-AUD-MM Balanced Analog Audio Distribution Amplifier with Mono Mix is a general-purpose amplifier for distributing analog audio signals and providing a mono mix output of the stereo inputs. It can be operated with either differential or single ended inputs and offers a wide range of gain adjustment to handle a wide variety of input signals.
The 7700ADA-AUD-MM occupies one card slot and can be housed in the 1RU 7801FR frame which holds up to four single or two dual slot modules, the 3RU 7800FR frame which has a 15 slot capacity, or the portable 3RU 350FR frame which has a 7 slot capacity.
Features
- Differential and single ended inputs (automatic single ended to differential conversion)
- High impedance inputs
- Low impedance outputs
- Wide gain adjustment range
- High common mode range and common mode rejection ratio
- Very high SNR and very low THD+N
- Mono Mix of the stereo input
- Module Status/Local Fault
Specifications
Analog Audio Inputs | |
|---|---|
| Standard | Any analog audio signal |
| Number of Inputs | 2 (Balanced or Single ended) |
| Connector | 3-pin removable terminal strips |
| Maximum Input Level | |
| 0dB Input Gain | +33dBu |
| +6dB Input Gain | +28dBu |
| Noise Floor | -87dBu (0dB input gain), -91dBu (+6dB input gain jumper setup) |
| Common Mode Rejection | > 90dB @ 60Hz, 60dB @ 20kHz (tested with +28dBu CM input) |
| Common Mode Range | |
| 0dB Input Gain | > ±22V |
| +6dB Input Gain | > ±7V |
| Input Impedance | 0dB Input Gain 33kΩ +6dB Input Gain 15kΩ |
Analog Audio Outputs | |
|---|---|
| Number of Outputs | |
| Distribution AmplifiEd Outputs | 3 outputs each of left and right channels |
| Mono Mix Outputs | 2 outputs total |
| Connectors | 3-pin removable terminal strips |
| Maximum Output Level | +28dBu across hi-impedance load +24dBm into 600Ω load |
| Output Impedance | 66Ω |
| Frequency Response | ±0.02dB 20Hz to 20kHz |
| Stereo Phase Mismatch | < 1°@ 20kHz |
| SNR | |
| 0dB Input Gain | 115dB |
| +6dB Input Gain | 119dB |
| THD+ Noise | 0.001% 20Hz to 20kHz @ 28dBu, unweighted RMS |
| Intermodulation Distortion | 0.001% - SMPTE @ 18dBu |
| Stereo Crosstalk | > 115dB @ 1kHz, > 93dB @ 20kHz |
Available Gains | |
|---|---|
| Input Step Gain | 0dB or +6dB (configurable with jumpers) |
| Fine Gain Control | -5 to +5dB (card edge pot adjustable) |
| Output Step Gain | 0, 3.5 or 9.5dB (configurable with jumpers) |
Electrical | |
|---|---|
| Voltage | +12V DC |
| Power | 12 watts |
| EMI/RFI | Complies with FCC regulations for class A devices Complies with EU EMC directive |
Physical | |
|---|---|
| Number of Slots | 1 |
Ordering Information
| 7700ADA-AUD-MM | Dual Channel Analog Audio Distribution Amplifier with Mono Mix |
|---|
Ordering Options | |
|---|---|
| Notes | • Rear plate must be specified at time of order - eg: [model]+3RU |
| Rear Plate Suffix | |
|---|---|
| +3RU | 3RU rear plate for use with 350FR, 7700FR-C, 7800FR or 7801FR Multiframes |
Enclosures | |
|---|---|
| 350FR | Portable Multiframe which holds 7 single slot modules |
| 7700FR-C | 3RU Multiframe which holds 15 single slot modules |
| 7800FR | 3RU Multiframe which holds 15 single slot modules |
| 7801FR | 1RU Multiframe which holds up to 4 single slot or 2 dual slot modules |