OVERVIEW
The DN-474A 2×2-Channel Dual-Impedance Amplifier is designed for contractor/install market applications which specify installed speaker systems requiring 70V/100V inputs, and has the added flexibility of handling lo-impedance loads (4Ω/8Ω). The amplifier is split so that two channels handle the lo-impedance speakers, while two channels take care of the 70V/100V speaker runs. This very versatile, one rack space amplifier has built-in short circuit protection – and LED indicators for signal present, clipping status and thermal interruption on the front panel. Engineered for the distribution of multiple 70V/100V speaker systems over long cable runs – such as in-ceiling speakers, surface-mount speakers and paging horns, and also for shorter runs to lo-impedance speakers.
- 4-Channel Class-D amplifier
- 2 X 120 Watts with 70V/100V outputs
- 2 X 150/90 Watts with 4/8-ohm loads
- Euroblock inputs and outputs
- Separate gain controls for each channel
- Signal, clipping and thermal interruption indicators
- Short-circuit and open-circuit protection
- Total Harmonic Distortion: < 0.1%
- Frequency Response: 100 Hz – 15 kHz (0 +/-1 dBv)
- Signal to Noise Ratio: > 95 dB
- Channel Separation: > 70 dB
- Input Sensitivity: 0.9 – 1.1 V (0 +/-1 dBv)
- Input Impedance: 20 kΩ balanced or 10 kΩ unbalanced
Connectors
- (8) Euroblock channel outputs – (2) per channel (70V, 100V, 4Ω, 8Ω)
- (4) Euroblock channel inputs (ground, -, +)
- (1) IEC AC power inlet
Power
- Connection: IEC
- Input Voltage: 100 – 240 VAC, 50/60 Hz
- Dimensions: 19.0″w x 11.1″d x 1.7″h (483 x 281 x 44mm)
- Weight: 10.4 lbs (4.7 kg)
