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TOA Electronics DA-250FH DA Series Multi-channel Digital
Amplifier, 4 Channels, 4x 250W (70V)/2x 500W bridged (140V)/Limiter and High
pass filter Power Output, Frequency Response HPF OFF 20Hz – 20kHz/HPF ON 50Hz –
20kHz, S/N Ratio (A weighted) 100dB, Crosstalk at 10kHz (A weighted)
70dB, DC Offset +/-5mV, Voltage Gain 35.1dB, Damping Factor 220 (1k Hz, 19.6Ω:
70V line),
Class D design, 30% lower power consumption than conventional amplifiers,
Compact, single or dual rack-space design, Stack up to 5 units without open
spaces between units, Independent power supply for each channel, Low heat
dissipation, Recessed stepped attenuators, Comprehensive protection circuitry,
Removable dust filters for easy maintenance
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General Information |
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Manufacturer |
TOA Electronics |
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Manufacturer Part Number |
DA-250FH |
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Product Name |
DA Series Multi-channel Digital Amplifier |
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Overview |
The DA Series multi-channel digital power
amplifiers are ideal for multi-zone distributed speaker systems and
professional sound applications. Engineered with Class D technology, the
new DA Series amplifiers operate at 85 percent efficiency and consume
almost one-third less power than conventional analog amplifiers. The
compact and lightweight single or dual rack-space design and ultra-low
heat dissipation allow designers to rack-mount up to five units without
open space between units.
The DA Series is comprised of high and low impedance four-channel models
each equipped with an independent power supply for each channel to
assure continuous operation and unmatched reliability and performance.
Other features include recessed stepped attenuators for precise gain
calibration, removable dust filters for easy maintenance, and optional
isolation transformer.
The DA-250F and DA-250FH power
amplifiers utilize advanced digital technology to provide multi-channel
high power outputs. Featuring high efficiency amplifier topology, the
low impedance version DA-250F and high impedance version DA-250FH are
ideal for various installed sound applications. The lightweight
construction and compact dimensions of the DA Series allows for easy
placement in virtually any venue, as well as for use in stacked
configurations as required. Each amplifier is equipped with low-noise
constant speed fans for adequate cooling and designed for ultra-reliable
long-term operation with multiple independent power supplies that ensure
uninterrupted operation even if a channel fails. Redundant protection
circuitry monitors amplifier status and protects the amplifier and
system in case of problems. |
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Features |
- 4x 250W (4 ohms)/170W (8 ohms)/2x
500W bridged (8 ohms) Power
Output
- Class D design – 85% efficient!
- 30% lower power consumption than
conventional amplifiers
- Compact, single or dual rack-space
design
- Stack up to 5 units without open
spaces between units
- Independent power supply for each
channel
- Low heat dissipation
- Recessed stepped attenuators
- Comprehensive protection circuitry
- Removable dust filters for easy
maintenance
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Specifications |
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Power Source |
120V AC, 50/60Hz |
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Number of Channels |
4 |
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Total Output All Channel Driven |
1,000W (1kHz, 19.6Ω: 70V line) |
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Output Voltage per Channel |
70V (1kHz, 19.6Ω: 70V line) |
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Output Current per Channel |
3.6A (1kHz, 19.6Ω: 70V line) |
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Power Output |
Hi-Z: 70V per channel 250W
Hi-Z: 140V bridged, per channel 500W |
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Power Consumption |
Idle power consumption 58W, 1.0A |
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Frequency Response |
HPF OFF: 20Hz – 20kHz (±1dB)
HPF ON: 50Hz – 20kHz (–3/+1dB) |
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THD |
HPF ON: 0.1 % (1kHz), 0.3% (100Hz – 20kHz)
HPF OFF: 0.1 % (1kHz), 0.3% (20Hz – 20kHz) |
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S/N Ratio (A weighted) |
100dB |
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Crosstalk at 10kHz (A weighted) |
70dB |
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DC Offset |
±5mV |
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Voltage Gain |
35.1dB |
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Damping Factor |
220 (1k Hz, 19.6Ω: 70V line) |
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Inputs |
Input impedance 10kΩ (unbalanced), 20kΩ
(balanced)
Input sensitivity +4dB (1.23V)
Input clipping 12V (23.8dBu) |
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Front Panel |
Gain controls 30 position detent
Indicators per channel: Input Green LED
Output Yellow LED
Peak Red LED
Protect Red LED
Power-On Blue LED |
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Rear panel |
Input connectors Detachable Euro style
terminal block connector (electrically balanced), XLR-3-31 type
connector
Speaker output Screw terminal (M4). Accept AWG12-22 |
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Protection Circuit |
Amplifier section DC output, overheat
protection, load shorting, overload current, maximum output
Power supply section Overheat protection, AC rush current |
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Cooling |
Continuously constant speed fan with
front-to-rear airflow, 50,000 hours life time at 25°C |
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Operating Temperature |
–10°C to +40°C (14°F to 104°F) |
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Operating Humidity Under |
90% RH (no condensation) |
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Dimensions |
482 (W) × 44 (H) × 401.8 (D) mm (18.98" ×
1.73" × 15.82") (EIA Standard 19-inch rack mount width) |
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Weight |
6.6kg (14.6 lbs ) |
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Finish |
Panel: Aluminum, alumite process,
black/Case: Plated steel sheet |
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Accessory |
Euro style terminal block connector
(3-pin) × 4, Tamper-proof cap × 4 |
A-20130103-1250-130-L
M-20161116-1250-191-L
*This item is BRAND NEW -
not refurbished. It comes with all manufacturer supplied accessories, and full
manufacturer's USA warranty.
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