Toa DA-250F Specifications

MULTI-CHANNEL POWER AMPLIFIERS
DESCRIPTION
The DA-250F and DA-250FH
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.
FEATURES
●
High-efficiency amplifier topology.
TOA's proprietary amplifier topology achieves approx. 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
The DA-250F and 250FH are 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.
Along with the low impedance version DA-250F, a high
impedance version DA-250FH, is available for 70/100
volt applications.
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.
* without DA-250FH 220 – 240V AC version.
power amplifiers utilize
Conventional AB-class Amplifier
DA-250 Series
100
90
80
70
60
50
40
30
20
10
0 20 40 60 80 100
Output (%)
●
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, meeting halls and
many other locations. The DA-250F proves ideal for sound
reinforcement in multi-zone applications such as
presentation and press conference rooms as well as
restaurants and similarly sized locations.
●
Compact and lightweight
The powerful yet compact DA-250F and 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.
*220 – 240V AC version: 6.8kg (15.0 lbs)
●
Enhanced reliability for trouble-free operation.
Both amplifiers have been over-
engineered to provide long
term operation under demanding
conditions. Fully independent
power supplies for each of the
4 amplifier channels enhances
reliability and allows uninterrupted
operation in the event a channel
should fail. This is a significant
advantage in remote installations
where service access may be
difficult. Each unit also
incorporates TOA's no-compromise
build quality to minimize any
problem as well as
comprehensive protection circuitry.
●
Comprehensive protection circuitry.
Advanced protection circuitry monitors voltage, current and
thermal levels and disables output to minimize potential
damage from overloads, short circuit, DC offset or
overheating.
●
Control cover eliminates tampering.
Each amplifier includes attenuator security covers to
prevent control settings from unauthorized adjustments.
DA-250F/DA-250FH
Conventional Amp. DA-250 Series Amp.
"Up to 20 amplifier
channels in only
five rack spaces!"
Conventional Amplifier
Power supply from transformer
Power
Supply
Power Amplifier
DA-250 Series
AC power supply
Power Amplifier
With built-in power supply