The DN-474A 2x2-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.

Features:

• 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

Specifications:

• 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)