Transcript of DA-250F/DA-250FH TOA Corporation. Features DA Series Multi-channel Digital Amplifiers.
- Slide 1
- DA-250F/DA-250FH TOA Corporation
- Slide 2
- Features
- Slide 3
- DA Series Multi-channel Digital Amplifiers
- Slide 4
- DA Series
- Slide 5
- DA Series Models DA-250FH: 4x 250W (70V/100V) DA-250F: 4x 250W
(4 ohm)
- Slide 6
- DA Series Models DA-250FH 4x 250W (70V/100V) 2x 500W bridged
mode (140V) *120VAC Version only Limiter
- Slide 7
- DA Series Models DA-250F 4x 250W (4 ohms) / 170W (8 ohms) 2x
500W bridged mode (8 ohms) Limiter
- Slide 8
- DA Series Four 250 Watt amplifier channels in one rack
space!
- Slide 9
- DA Series Features Class D design 85% efficient! 60% lower
power consumption than conventional amplifiers Compact, single
rack-space design Stack up to 5 units without open spaces between
units Lightweight 6.6kg (14.6 lbs.) 120VAC version 6.8kg (15.0
lbs.) 220-240VAC version Independent power supply for each
channel
- Slide 10
- DA Series Features Low heat dissipation Recessed stepped
attenuators Comprehensive protection circuitry Removable dust
filters for easy maintenance Optional 250W output transformer,
model MT- 250H
- Slide 11
- DA Series Front Panel Channel #1 Channel #2Channel #3 Channel
#4
- Slide 12
- DA Series Front Panel Recessed stepped attenuators Input,
Output, Peak and Protect indicators Power On/Off Removable Dust
Filter
- Slide 13
- DA Series Rear Panel Removable AC connection Power amplifier
outputs w/ protective cover plate Balanced inputs (+4/-10 dBu)
- Slide 14
- DA Series Input Section CH1 to All Switch Bridge 2 Switch
Bridge 1 Switch
- Slide 15
- DA Series Power Supply Separate power supply on each amplifier
channel!
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- Stack up to five units! Twenty amplifier channels in only five
rack spaces! Rack Mounting
- Slide 17
- Class D Advantages High power efficiency Smaller heat sink and
power supply Less heat Increased reliability
- Slide 18
- Digital Amplifiers
- Slide 19
- DA-250FH: Block Diagram 120VAC version
- Slide 20
- DA-250F: Block Diagram
- Slide 21
- MT-250 Matching Transformer Low frequency response down to
30Hz! Up to 250W
- Slide 22
- Technical Fields
- Slide 23
- Working Outline Class-ABClass-D
- Slide 24
- The method of Class-D Amplification Class-D Amplifier changes
input signals into digital pulse signals in PWM and then amplifies
it. Output signals are also come out as digital pulses, and audio
signals are extracted by using LPF. Class-AB amplifier linearly
amplifies input signals. A waveform amplified does not change after
amplification. Amp Input signal Output signal PWM Input signal
AmpLPF Output signal Digital pulse Output signal