TOA DA-250FH CU User manual

TOA DA-250FH CU User manual
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zd TOA MULTICHANNEL POWER AMPLIFIER DA-250FH(CU)
BOESCRIPTION
The DA—250FH is a 4—Channel Digital Power Amplifier designed for 70 V line high—impedance
distribution and features lightweight, compact, high power output, and high efficiency. It delivers
250 W X 4 channels (19.6 © output) usina a switching power SUPPU- Lach channel is equipped
with an independent power section. It can be electrically isolated
system by attaching the M1-251H Output Iransformer (optional).
lt can be mounted in an EIA Standard equipment rack (1 unit size).
rom the high—impedance speaker
BSPECIFICATIONS «0 dB = 0.775 Y
Power Source 120 V AC, 50/60 Hz
Amplification System Class D
Power Consumption 200 W (based on UL/CSA standards)
1200 W (rated output 70 Y line, 19.6 Q X 4)
Input 4 circuits, +4 dBx (1.23 Y) (input level control in maximum position),
10 kQ, electronically—balanced, removable terminal block (3 pins)
CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch)
Rated Output 4 channels: 250 W X 4 (70 V line, 19.6 Q)
2 channels (BRIDGE): 500 W X 2 (140 V line, 39.2 Q)
M4 screw terminal, distance between barriers: 8.8 mm
Frequency Response 20 Hz — 20 kHz (+1 dB): HPF OFE/50 Hz - 20 kHz (-3 dB, +1 dB): HPF ON
(selectable with the inner jumper)
Total Harmonic Distortion 0.1 % (1 kHz), 0.3 % (20 Hz — 20 kHz): HPF OFF
0.1 % (1 kHz), 0.3 % (100 Hz — 20 kHz): 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 (110 °С or more),
temperature rise inside the unit (80 °С or more)
Signal to Noise Ratio 100 dB (A—weighted)
Crosstalk /0 dB (A—weighted)
LED Indicator Power (blue) X 1, Input (green) X 4, Output (yellow) X 4,
Peak (red) X 4 Protect (red) X 4
Cooling Forced air cooling
Operating Temperature —10 °С to +40 °С
Operating Humidity 90 ZRH or less (no condensation)
Finish Panel: Aluminum, black, alumite Case: Plated steel sheet
Dimensions 482 (W) X 44 (H) X 401.8 (D) mm
Weight 6.6 Ка
Accessory Power cord (2 m) +1, Removable terminal plug (3 pins) -4,
Tamper—proof cap 4
Option Matching transformer: MT—251H
BAPPEARANCE
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Rear View
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UNIT: mm SCALE: 1/75 Side View
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TOA Corporation DWG No: GDAO03A1—5
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