SPECIFICATIONS
Model DA-250F DA-250FH
120V AC Version 220 – 240V AC Version 120V AC Version 220 – 240V AC Version
Number of channels 44 4 4
Total output all channel driven 1,000W (1kHz, 4Ω) 1,000W (1kHz, 4Ω) 1,000W (1kHz, 19.6Ω) 1,000W (1kHz, 40Ω)
680W (1kHz, 8Ω) 680W (1kHz, 8Ω)
Output voltage per channel 31.6V (1kHz, 4Ω) 31.6V (1kHz, 4Ω) 70V (1kHz, 19.6Ω) 100V (1kHz, 40Ω)
36.9V (1kHz, 8Ω) 36.9V (1kHz, 8Ω)
Output current per channel 7.9A (1kHz, 4Ω) 7.9A (1kHz, 4Ω) 3.6A (1kHz, 19.6Ω) 2.5A (1kHz, 40Ω)
4.6A (1kHz, 8Ω) 4.6A (1kHz, 8Ω)
Power output
8 ohms per channel 170W 170W — —
4 ohms per channel 250W 250W — —
16 ohms bridged 340W 340W — —
8 ohms bridged 500W 500W — —
Hi-Z: 70V/100V per channel —— 250W 250W
Hi-Z: 140V bridged, per channel —— 500W —
Power consumption*
Idle power consumption 56W, 1.0A 48W, 0.3A 58W, 1.0A 75W, 0.5A
1/8 Power 8 ohms Pink noise 183W, 3.0A 167W, 1.2A — —
4 ohms 257W, 4.2A 248W, 1.6A — —
70 Volts —— 265W, 4.1A —
100 Volts —— — 270W, 1.9A
1/3 Power 8 ohms 362W, 5.4A 349W, 2.4A — —
4 ohms 597W, 8.6A 511W, 3.7A — —
70 Volts —— 609W, 8.5A —
100 Volts —— — 491W, 3.5A
1/8 Power 8 ohms 1kHz 152W, 2.5A 143W, 1.0A — —
4 ohms 219W, 3.5A 202W, 1.4A — —
70 Volts —— 224W, 3.6A —
100 Volts —— — 230W, 1.6A
1/3 Power 8 ohms 314W, 4.7A 284W, 1.9A — —
4 ohms 507W, 7.3A 437W, 3.0A — —
70 Volts —— 499W, 7.2A —
100 Volts —— — 443W, 3.0A
Frequency response 20Hz – 20kHz, ±1dB 20Hz – 20kHz, ±1dB
20Hz – 20kHz, ±1dB (HPF OFF)
50Hz – 20kHz, –3dB, +0dB
50Hz – 20kHz, –3/+0dB (HPF ON)
Total harmonic distortion (THD) 0.1 % 0.1 %
(1kHz)
S/N ratio (A weighted) 100dB 100dB
Crosstalk at 10kHz (A weighted) 70dB 70dB
DC offset* ±5mV ±5mV
Voltage gain* 29.5dB 35.1dB
Damping factor* 100 120
Inputs
Input impedance 10kΩ (unbalanced), 20kΩ (balanced) 10kΩ (unbalanced), 20kΩ (balanced)
Input sensitivity +4dB (1.23V) +4dB (1.23V)
Input clipping 14V (25.1dBu) 14V (25.1dBu)
Front panel
Gain controls 30 position detent 30 position detent
Indicators per channel: Input Green LED Green LED
Output Yellow LED Yellow LED
Peak Red LED Red LED
Protect Red LED Red LED
Power-On Blue LED Blue LED
Rear panel
Input connectors Detachable Euro style terminal block (electrically balanced) Detachable Euro style connector (electrically balanced)
Speaker output Screw terminal (M4). Accept AWG14-22 Screw terminal (M4). Accept AWG14-22
Protection circuit Amplifier section DC output, overheat protection, load shorting, overload current, maximum output
Power supply section Overheat protection, AC rush current
Cooling Continuously constant speed fan with front-to-rear airflow,
50,000 hours life time
Power requirement AC mains, 50/60Hz
Operating Temperature –10°C to +40°C
Operating Humidity Under 90% RH (no condensation)
Dimensions (W × H × D) 482mm (19") × 44mm (1.7") × 401mm (15.8") (EIA Standard 19-inch rack mount width)
Weight 6.6kg (14.6 lbs ) 6.8kg (15.0 lbs ) 6.6kg (14.6 lbs ) 6.8kg (15.0 lbs )
Finish Panel: Aluminum, alumite process, black
Case: Plated steel sheet
Accessory Euro style terminal block connector (3-pin) × 4, Volume control cover × 4
Option — Matching transformer: MT-250H
0dB=0.775Vrms
*Typical data
Specifications are subject to change without notice.
Printed in Japan (0604) 833-52-363-90 u
TOA Corporation
URL : http://www.toa.jp/
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