Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Toa DA-250F CU
Summary of Contents for Toa DA-250F CU
- Page 1 MULTICHANNEL POWER AMPLIFIERS Thank you for purchasing TOA's Multichannel Power Amplifier. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment. OPERATING INSTRUCTIONS DA-250F CU DA-250FH CU Note: The figure shows the DA-250F.
-
Page 2: Table Of Contents
TABLE OF CONTENTS 1. IMPORTANT SAFETY INSTRUCTIONS 2. SAFETY PRECAUTIONS 3. GENERAL DESCRIPTION 4. FEATURES 5. HANDLING PRECAUTIONS 6. INSTALLATION PRECAUTIONS 7. NOMENCLATURE AND FUNCTIONS Front ... 8 Rear ... 9 8. CONNECTIONS 8.1. Procedure ... 10 8.2. Button Settings and Speaker Connections ... 10 9. -
Page 3: Important Safety Instructions
1. IMPORTANT SAFETY INSTRUCTIONS • Read these instructions. • Keep these instructions. • Heed all warnings. • Follow all instructions. • Do not use this apparatus near water. • Clean only with dry cloth. • Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. •... -
Page 4: Safety Precautions
2. SAFETY PRECAUTIONS • Before installation or use, be sure to carefully read all the instructions in this section for correct and safe operation. • Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or cautions regarding safety. - Page 5 shock. • When moving the unit, be sure to remove its power supply cord from the wall outlet. Moving the unit with the power cord connected to the outlet may cause damage to the power cord, resulting in fire or electric shock.
-
Page 6: General Description
3. GENERAL DESCRIPTION TOA's DA-250F and DA-250FH Multichannel Power Amplifiers feature high power handling capabilities and durability. The DA-250F is configured with 250 W x 4 channels (4 Ω output) and 170 W x 4 channels (8 Ω output), and the DA-250FH features a 250 W x 4 channels (19.6 Ω output) configuration. Besides, each model's output is made available for bridge connection, allowing it to be used as a stereo amplifier of 500 W (8 Ω... -
Page 7: Installation Precautions
6. INSTALLATION PRECAUTIONS • The supplied power supply cord is designed for exclusive use with this unit. Never use it with other equipment. • When mounting the unit in an equipment rack, the inside of the rack must be sufficiently ventilated. To achieve sufficient ventilation, remove all panels on the rear of the rack. -
Page 8: Nomenclature And Functions Front
7. NOMENCLATURE AND FUNCTIONS [Front] 1. Power switch [ Power is switched on and off with each depression of this switch. 2. Power indicator [POWER] Lights blue when the power is switched on. 3. Input volume controls [CH 1 (BRIDGE 1), CH 2, CH 3 (BRIDGE 2), CH 4] Adjust the input volume of each channel. -
Page 9: Rear
[Rear] 6. AC inlet Connect the supplied power cord to this inlet. 7. Functional ground terminal [SIGNAL GND] Hum noise may be generated when external equipment is connected to the unit. Connecting this terminal to the functional ground terminal of the external equipment may reduce the hum noise. -
Page 10: Connections
8. CONNECTIONS 8.1. Procedure Step 1. Switch off the unit's power. Step 2. Set the BRIDGE ON/OFF buttons and CH 1 mode ON/OFF button. Step 3. Connect the sound source equipment to the Input terminals. Note Refer to p. 12 for the removable terminal plug connection. - Page 11 [2 inputs - 2 outputs] [1 input - 2 outputs] [3 inputs - 3 outputs (1)] [3 inputs - 3 outputs (2)] [1 input - 3 outputs (1)] Speaker output terminals Button Setting BRIDGE 1 BRIDGE 2 BRIDGE 2 CH 1 mode Speaker output terminals Button Setting...
-
Page 12: Removable Terminal Plug Connection
[1 input - 3 outputs (2)] 9. REMOVABLE TERMINAL PLUG CONNECTION Cautions • Be sure to use shielded cables for audio signal lines. • Avoid soldering cable conductor, as contact resistance may increase when the cable is tightened and the solder is crushed, possibly resulting in an excessive rise in joint temperatures. -
Page 13: Input Sensitivity And High-Pass Filter On/Off Settings
10. INPUT SENSITIVITY AND HIGH-PASS FILTER ON/OFF SETTINGS The Input sensitivity can be set to +4 dB (factory-preset) or -10 dB for each channel. Besides, only the DA-250FH employs the High-pass filter on each channel, which can be set to "ON" or "OFF."... -
Page 14: Protection Operation List
11. PROTECTION OPERATION LIST Failure Protection Overcurrent due Current limiter activated to overload when impedance drops below the specified value. Short circuit Current limiter activated. Load is disconnected. Rise in heat sink Load disconnected. temperature (over 110°C) Temperature rise Built-in amplifier unit inside the unit that caused the failure (over 80°C) -
Page 15: Cleaning The Filter
13. CLEANING THE FILTER Step 1. Switch off the unit's power. Step 2. Remove the ventilation panel as shown in the figure. Step 3. Detach the filter inside the ventilation panel. Step 4. Clear the filter of dust. Step 5. Replace the filter and ventilation panel. Ventilation Panel Detach the panel by pressing on the left and right sides. -
Page 16: Block Diagrams
14. BLOCK DIAGRAMS 14.1. DA-250F... -
Page 17: Da-250Fh
14.2. DA-250FH... -
Page 18: Dimensional Diagram
15. DIMENSIONAL DIAGRAM Unit: mm... -
Page 19: Specifications
• Accessories Power cord (2 m) ... 1 Removable terminal plug (3P) ... 4 Volume control cap ... 4 DA-250F CU 120 V AC, 50/60 Hz 200 W (at 1/8 rated output x 4 channels) 170 W x 4 (8 Ω) 500 W x 2 (8 Ω) - Page 20 Printed in Japan 133-22-027-00...
Need help?
Do you have a question about the DA-250F CU and is the answer not in the manual?
Questions and answers