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DescriptionIntroducing TOA's DA-250FH power amplifier. 4x 250W (70V) Featuring 4 high power outputs, advanced digital technology and compact, lightweight design, these versatile amplifiers are perfect solutions for virtually any installed sound application. The DA Series multi-channel digital power amplifie... Read More
Retail Price: $2,109.70 Our Price: $1,704.80
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Introducing TOA's DA-250FH power amplifier. 4x 250W (70V) Featuring 4 high power outputs, advanced digital technology and compact, lightweight design, these versatile amplifiers are perfect solutions for virtually any installed sound application.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-250FH is 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.
Competitively priced, the new DA Series multi-channel power amplifiers are backed by TOA's five-year warranty.
High-efficiency amplifier topology.
TOA's proprietary amplifier topology achieves approximately 85% efficiency in AC mains to output power conversion. The high-efficiency, compact design operates at much lower temperature levels eliminating the need for large heat sinks.
Amplifier design optimized for installed sound applications
This is specifically designed to produce high power with high efficiency. Along with switching mode power supplies, the amplifiers also offer the high power advantages of Pulse Width Modulation (PWM) which requires much smaller power supply voltage than conventional amplifier designs.
Two configurations suit different applications.
A highimpedance version, the DA-250FH, is available for 70/100 volt application.
Easily accommodates high power requirements.
Both amplifiers can be conveniently bridged* (Channels 1/2 and 3/4 bridgeable), increasing the output from 250W into 4 channels up to 500W into 2 channels.
Versatile enough for any venue.
Both amplifiers are well-suited for a wide variety of installed sound requirements. The DA-250FH is ideal for venues ranging from exhibition halls, sports facilities and gymnasiums to houses of worship and meeting halls and many other locations. The DA-250FH proves ideal for sound reinforcement in multi-zone multi-zone applications such as presentation and press conference rooms as well as restaurants and similarly sized locations.
Compact dimensions facilitate installation
The DA-250FH amplifiers occupy only one standard rack space and weight only 6.6kg (14.6 lbs) allowing flexible installation options. For complex installed sound applications, amplifiers can be stacked together, requiring only one perforated airflow panel between every 5 units. The amplifiers are also equipped with dual low-noise constant speed fans to ensure adequate cooling in demanding environments and extend operational reliability and service life.
|Number of channels||4|
|Total output all channel driven||70V (1kHz, 19.6Ω)|
|Output voltage per channel||70V (1kHz, 19.6Ω)|
|Output current per channel||3.6A(1kHz,19.6Ω)|
Hi-Z: 70V/100V per channel
Hi-Z: 140V bridged, per channel
Idle Power Consumption
1/8 Power 70 Volts
1/3 Power 70 Volts
1/8 Power 70 Volts
1/3 Power 70 Volts
|Frequency response||20Hz – 20kHz, ±1dB (H.P.F.OFF)|
50Hz – 20kHz, –3/+0dB (H.P.F. ON)
|Total harmonic distortion (THD) (1kHz)||0.1 %|
|S/N ratio (A weighted)||100dB|
|Crosstalk at 10kHz (A weighted)||70dB|
10kΩ (unbalanced), 20kΩ (balanced)
Indicators per channel: Input
30 position detent
Detachable Euro style connector (electrically balanced)
Screw terminal (M4). Accept AWG14-22
|Protection circuit Amplifier section |
Power supply section
|DC output, overheat protection, load shorting, overload current, maximum output|
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|
|Dimensions (W × H × D)||482mm (19) × 44mm (1.7) × 401mm (15.8) (EIA Standard 19-inch rack mount width)|
|Finish||Panel: Aluminum, alumite process, black|
Case: Steel sheet
|Accessory||Euro style terminal block connector (3-pin) × 4, Volume control cover × 4|
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