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TOA da-250d Specification Guide

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Human Society with 
Sound & Communication
DA SERIES
MULTICHANNEL POWER AMPLIFIER
■ High-efficiency amplifier topology
• Class D design — 80 – 90% efficient!
• 60% lower power consumption than conventional amplifiers
■ Compact and lightweight
Only 6.6 kg (14.6 lb)!
 
DA-250F/FH (120V AC model)
■ Enhanced reliability for trouble-free operation
• Independent
 
power supply
 for 
each channel
• Allows uninterrupted operation 
in the events a channel 
should fail
■ Applications
• House of Worship
• Presentation Room
• Restaurant
• Fitness Club
• Sports Facility
• Convention Center
• Bar/Lounge/Club
• Boardroom
Conventional AB-class Amplifier
DA-250 Series
Efficiency vs Output
Efficiency (%)
Output (%)
100
90
80
70
60
50
40
30
20
10
0
 
20
40
60
80
100
Wireless Microphone System
CD Player
DVD Player
Infrared Wireless Conference System
Wired Microphone
Digital Mixer
DA Series Amplifier
PC
Projector
Speakers
■ DA-250 Series
 
• DA-250F:
4 
× 250W (4 ohms)/170W (8 ohms)
2 
× 500W bridged mode (8 ohms)
• DA-250FH:
4 x 250W (High-Z)
  
2 x 500W (140V bridged)*
120V AC model only 
• DA-250D:
2 x 250W (4 ohms)/170W (8 ohms)
  
1 x 500W bridged mode (8 ohms)
• DA-250DH:
2 x 250W (High-Z)
  
2 x 500W (140V bridged)*
120V AC model only 
■ DA-500 Series
 
• DA-550F:
4 x 550W (4 ohms)/350W (8 ohms)
  
2 x 1100W bridged mode (8 ohms)
• DA-500FH (220-240V AC model only)
  
4 x 500W (High-Z)
• DA-500F-HL (120V AC model only)
  
4 x 500W (High-Z)  
  
2 x 1000W (140V bridged)
 
Conventional Amp.
DA-250F/FH Amp.
DA-500 Series Amp.
Total: 16,000W
41U
Total: 16,000W
21U
Total: 16,000W
19U
Power Amplifier
Power 
Supply
Power supply from transformer
Conventional Amplifier
Power Amplifier
With built-in power supply
AC power supply
DA Series Amplifier
Power 
Supply
Power 
Supply
Power 
Supply
Power 
Supply