TOA, Pojačalo digitalno 2x250W/100V, DA-250 DH CE

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Highlights:

Dvokanalno, digitalno instalacijsko pojačalo.

Opis

The DA-250DH is a 2-Channel Digital Power Amplifier designed for 100 V line high-impedance distribution and features lightweight, compact, high power output, and high efficiency. It delivers 250 W ƒ 2 channels (40 › output) using a switching power supply. Each channel is equipped with an independent power section. It can be electrically isolated from the high-impedance speaker system by attaching the MT-251H Output Transformer (optional). It can be mounted in an EIA Standard equipment rack (1 unit size).

  • 2x 250 W rated output
  • 100 V speaker outputs
  • Light weight and compact
  • Class D design 85 % efficient
  • For 19″ cabinet rack mounting with 1 U height
  • Independent power supply for each channel
  • Forced-air cooling system
  • Low heat dissipation
  • Comprehensive protection circuitry
  • Removable dust filters for easy cleaning
Tehničke specifikacije
Power Source 120 V AC, 50/60 Hz
Amplification System Class D
Power Consumption 120 W (based on UL/CSA standards)
580 W (rated output 70 V line, 19.6 Ω × 2)
Input 2 circuits, +4 dB* (1.23 V) (input level control in maximum position),
10 kΩ, electronically-balanced, removable terminal block (3 pins),
XLR-3-31 type connector
CH 1 mode ON/OFF switch (ON: PARALLEL, OFF: STEREO)
Rated Output 2 channels: 250 W × 2 (70 V line, 19.6 Ω)
1 channel (BRIDGE): 500 W × 1 (140 V line, 39.2 Ω)
M4 screw terminal, distance between barriers: 8.8 mm (0.35")
Frequency Response 20 - 20,000 Hz (±1 dB): HPF OFF/50 - 20,000 Hz (-3 dB, +1 dB): HPF ON
(selectable with the inner jumper)
Total Harmonic Distortion 0.1% (1 kHz), 0.3% (20 - 20,000Hz): HPF OFF
0.1% (1 kHz), 0.3% (100 - 20,000 Hz): HPF ON
Protection Circuit Protection against excessive current flow due to overload,
short circuit, unusual DC voltage output,
temperature rise at power amp. heat sink (100℃ or more (212゜F)),
temperature rise inside the unit (80℃ or more (176゜F))
S/N Ratio 100 dB (A-weighted)
Crosstalk 70 dB (A-weighted)
LED Indicator Power (blue) × 1, Input (green) × 2, Output (yellow) × 2, Peak (red) × 2,
Protect (red) × 2
Cooling Forced air cooling
Operating Temperature -10℃ to +40℃ (14゜F to 104゜F)
Operating Humidity 90% RH or less (no condensation)
Finish Panel: Aluminum, black, alumite Case: Plated steel sheet
Dimensions 482 (W) × 44 (H) × 401.8 (D) mm (18.98" × 1.73" × 15.82")
Weight 5 kg (11.02 lb)
Accessory Power cord (2 m (6.56 ft)) …1, Removable terminal plug (3 pins) …2,
Tamper-proof cap …2
Option Matching transformer: MT-251H

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