2x2-Channel Dual-Impedance Amplifier
แอมพลิไฟเออร์ ให้กำลังไฟสูงสุดอยู่ที่ 120วัตต์ 4 ชาแนล แบบ4/8 โอมห์ และ70/100V ตอบสนองย่านความถี่อยู่ที่ระหว่าง 100Hz–15kHz มาพร้อมกับ ไฟ LED สำหรับแสดงสัญญาณไฟที่ช่วยเพิ่มประสิทธิภาพการทำงานที่เหมาะสม
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 :
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4-Channel Class-D amplifier
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2 X 120 Watts with 70V/100V outputs
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2 X 150/90 Watts with 4/8-ohm loads
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Euroblock inputs and outputs
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Separate gain controls for each channel
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Signal, clipping and thermal interruption indicators
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Short-circuit and open-circuit protection
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Total Harmonic Distortion : < 0.1%
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Frequency Response : 100 Hz – 15 kHz (0 +/-1 dBv)
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Signal to Noise Ratio : > 95 dB
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Channel Separation : > 70 dB
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Input Sensitivity : 0.9 – 1.1 V (0 +/-1 dBv)
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Input Impedance : 20 kΩ balanced or 10 kΩ unbalanced
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Connectors :
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Euroblock channel outputs – (2) per channel (70V, 100V, 4Ω, 8Ω)
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Euroblock channel inputs (ground, -, +)
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IEC AC power inlet
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Power :
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Connection : IEC
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Input Voltage : 100 – 240 VAC, 50/60 Hz
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Dimensions : 19.0″w x 11.1″d x 1.7″h (483 x 281 x 44mm)
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Weight : 10.4 lbs (4.7 kg)