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Related Manuals for Toa DA-250F CE
Summary of Contents for Toa DA-250F CE
- Page 1 OPERATING INSTRUCTIONS MULTICHANNEL POWER AMPLIFIERS DA-250F CE DA-250FH CE DA-250F DA-250FH 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.
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Page 2: Table Of Contents
TABLE OF CONTENTS 1. SAFETY PRECAUTIONS ................3 2. GENERAL DESCRIPTION ................5 3. FEATURES ......................5 4. HANDLING PRECAUTIONS ................5 5. INSTALLATION PRECAUTIONS ..............6 6. NOMENCLATURE AND FUNCTIONS Front ......................... 7 Rear .......................... 8 7. BUTTON SETTINGS AND SPEAKER CONNECTIONS 7.1. -
Page 3: Safety Precautions
AC outlet and • When unplugging the power supply cord, be sure contact your nearest TOA dealer. Make no further to grasp the power supply plug; never pull on the attempt to operate the unit in this condition as this cord itself. - Page 4 • Contact your TOA dealer as to the cleaning. If dust • Avoid installing the unit in humid or dusty locations, is allowed to accumulate in the unit over a long...
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Page 5: General Description
2. 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 (40 Ω output) configuration. Besides, the DA- 250F's output is made available for bridge connection, allowing it to be used as a 500 W (8 Ω) x 2 channels... -
Page 6: Installation Precautions
5. 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 7: Nomenclature And Functions Front
6. NOMENCLATURE AND FUNCTIONS [Front] DA-250F DA-250FH 4. Ventilation panel (Air Vent) 1. Power switch [ OFF] A filter is located inside the ventilation panel. Power is switched on and off with each To clean the filter, remove the ventilation panel. depression of this switch. -
Page 8: Rear
[Rear] DA-250F DA-250FH 6. AC inlet • 3-channel input mode Connect the supplied power cord to this inlet. Set either BRIDGE 1 or 2 to ON. When bridge-connecting Channels 1 and 2, set 7. Functional earth terminal [SIGNAL GND] BRIDGE 1 to ON, and BRIDGE 2 to ON when Hum noise may be generated when external bridge-connecting Channels 3 and 4. -
Page 9: Button Settings And Speaker Connections
7. BUTTON SETTINGS AND SPEAKER CONNECTIONS 7.1. Connections Step 1. Switch off the unit's power. BRIDGE 2 ON/OFF button RIDGE 1 ON/OFF button (DA-250F only) (DA-250F only) Step 2. Set the BRIDGE ON/OFF buttons (DA-250F only) and CH 1 mode ON/OFF button. Step 3. - Page 10 [2 inputs - 2 outputs] Button Setting BRIDGE 1 Speaker output terminals BRIDGE 2 BRIDGE 2 BRIDGE 1 CH 1 mode 8 – 16 Ω – 8 – 16 Ω – [1 input - 2 outputs] Button Setting BRIDGE 1 Speaker output terminals BRIDGE 2 BRIDGE 2...
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Page 11: When Using The Da-250Fh
[1 input - 3 outputs (2)] Button Setting BRIDGE 1 Speaker output terminals BRIDGE 2 BRIDGE 1 CH 1 mode 8 – 16 Ω – 4 – 8 Ω – 4 – 8 Ω – 7.3. When Using the DA-250FH [4 inputs - 4 outputs] Button Setting... -
Page 12: Removable Terminal Plug Connection
8. 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 Setting
9. INPUT SENSITIVITY SETTING The input sensitivity for each channel can be set to either +4 dB (factory preset) or –10 dB. CAUTION These servicing instructions are for use by qualified personnel only. To avoid electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so. -
Page 14: Protection Operation List
Abnormal DC Load disconnected. Protection indicator Contact the TOA dealer where the unit was voltage output lights. purchased. 11. VOLUME CONTROL CAP ATTACHMENT To protect the input volume control from accidental operation, it is recommended to replace the control knob with the supplied volume control cap as illustrated. -
Page 15: Cleaning The Filter
12. 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
13. BLOCK DIAGRAMS 13.1. DA-250F... -
Page 17: Da-250Fh
13.2. DA-250FH... -
Page 18: Dimensional Diagram
14. DIMENSIONAL DIAGRAM Unit: mm... -
Page 19: Specifications
15. SPECIFICATIONS Model DA-250F CE DA-250FH CE Power Source 220 – 240 V AC, 50/60 Hz Power Consumption 200 W (at 1/8 rated output x 4 channels) 4 channels: 250 W x 4 (4 Ω), 4 channels: 250 W x 4 (40 Ω) Output 170 W x 4 (8 Ω) - Page 20 Printed in Japan 133-22-028-50...
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