Toa DA-250D Specifications

DA-250D/250DH
Dual-Channel Digital Power Amplifiers
DA-250D
DESCRIPTION
The TOA DA-250D and DA-250DH dual-channel power amplifiers offer a wider choice of power ratings, advanced Class D
amplification circuitry, and a highly efficient AC mains to output power ratio, for the complete technological superiority it takes
to support long-term installation applications. These energy-efficient, space-saving amplifiers are designed to combine high
levels of performance and efficiency, and are well-suited to ensure sound reinforcement reliability in a wide range of venue
types. The DA-250D is ideal for dual-zone applications such as presentation and press-conference rooms, restaurants and
similar-sized locations. The DA-250DH is well-suited to such locations as exhibition halls, sports facilities, multipurpose halls
and houses of worship.
FEATURES
• High efficiency
Extremely high amplification efficiency of 80-90%, resulting in reduction in power
consumption by more than 60% compared with Class-AB amplifiers.
• Highly durable
Stands up to extended hours of operation. The DA amplifier has undergone a large
number of rigorous tests to prove its durability. In addition,TOA has been conducting
a "non-stop driving test" of the DA Series.
• High reliability
The DA amplifier has a comprehensive protection circuitry for protection against excessive
current flow due to overload, short circuit, unusual DC voltage output, and power amplifier
heat sink temperature rise ( over 100°C), temperature rise inside the unit (over 80°).
• Amplifier with lightweight design
Installation has become much easier thanks to the lightweight design.
• Compact design
The DA-250 Series is 1-unit size, and they can be efficiently mounted on a rack, so they
require only a small installation space. Because the amplifiers do not generate much
heat, 5 units can be stacked together in a rack.
• Independent power supply
Each of the channels has its own power supply. If the power supply of Channel 1 should
fail, this won't affect the operation of Channel 2. It is also possible to use the either
channel as a spare amplifier.
DA-250DH
DA Series Amplifier Conventional AB-class Amplifier
100
90
80
70
60
50
40
30
20
10
0 20 40 60 80
Output (%)
CU Version
100