Toa BG-220 Operating Instructions Manual
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Toa BG-220 Operating Instructions Manual

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MIXER AMPLIFIERS

TABLE OF CONTENTS

2. SAFETY PRECAUTIONS ........................... 3
3. GENERAL DESCRIPTION ......................... 5
4. FEATURES ................................................. 5
Front ............................................................ 5
Rear ............................................................. 6
Connection ........................................... 8
6.2. Input Connections ................................ 8
6.3. Output Connections .............................. 9
7.1. Manual Mute ....................................... 10
Thank you for purchasing TOA's Mixer Amplifiers.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
MIC/LINE 1
LINE 2
0
10
0
10
BASS
TREBLE
MIXER AMPLIFIER BG-235
OPERATING INSTRUCTIONS
LINE 3
SIGNAL
0
10
7.2. Automatic Mute .................................. 10
8. MOH OUTPUT ASSIGNMENT ................. 11
9. 2-CHANNEL BROADCAST ...................... 11
10. OPERATION ............................................. 12
ATTACHMENT ......................................... 12
13. VOLUME SETTING .................................. 13
14. VOLUME CONTROL COVER .................. 13
15. BLOCK DIAGRAM ................................... 14
16. DIMENSIONAL DIAGRAM ....................... 15
17. SPECIFICATIONS .................................... 16
Accessories ............................................... 16
Optional products ...................................... 16
BG-220
BG-235
PEAK
POWER
ON
OFF

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Summary of Contents for Toa BG-220

  • Page 1: Table Of Contents

    17. SPECIFICATIONS ........16 7. MUTING FUNCTION Accessories ..........16 7.1. Manual Mute ........10 Optional products ........16 Thank you for purchasing TOA's Mixer Amplifiers. Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.

  • Page 2: 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 3: Safety Precautions

    • Should the following irregularity be found during use, immediately switch off the power, disconnect the power supply plug from the AC outlet and contact your nearest TOA dealer. Make no further attempt to operate the unit in this condition as this may cause fire or electric shock.
  • Page 4 Indicates a potentially hazardous situation which, if mishandled, could CAUTION result in moderate or minor personal injury, and/or property damage. When Installing the Unit • Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock. •...

  • Page 5: General Description

    The BG-220 and BG-235 are 3-input mixer amplifiers for background music and general announcement. Power output is rated at 20 W for the BG-220 and 35 W for the BG-235. These units are suited for use in bars, retail stores, and banquet rooms, and are equipped with the MOH output that permits 2-channel broadcast when used in conjunction with the optional booster amplifier BA-235 (35 W) or BA-260 (60 W).

  • Page 6: Rear

    4. Line 2 input volume control 7. Peak indicator Adjusts gain of the Line 2 input. Lights red if output signals approach clipping level. Turn the knob clockwise to increase the level and If steady lit, turn down the corresponding input counterclockwise to decrease it.
  • Page 7 13. Function switch 15. Manual mute terminal Used to set the MOH ASSIGN, MUTE RECEIVE, Closing between (+) and (–) terminals mutes the and AUTO MUTE functions, and to select MIC or input signal set for Mute Receive by the Function LINE 1.

  • Page 8: Connections

    6. CONNECTIONS 6.1. Removable Terminal Plug Connection Notes • 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. • Use cables of AWG 12 – 24. [Cable end treatment] 2-core shielded cable Solid cable and stranded cable...

  • Page 9: Output Connections

    COM 4 Ω 25 V 70 V 25 V LINE 70 V LINE Total impedance Total impedance 31 Ω (BG-220) 245 Ω (BG-220) 18 Ω (BG-235) 140 Ω (BG-235) 4 – 16 Ω 25 V Line 70 V Line The terminals marked with the symbol are hazardous live.

  • Page 10: Muting Function

    7. MUTING FUNCTION Manual mute and Automatic mute are available for the muting function. Manual mute is a function to mute the LINE 2 and/or LINE 3 input when the manual mute terminals are closed. Automatic mute is an audio-signal activated mute function to automatically mute the LINE 2 and/or LINE 3 input when audio signals enter the MIC/LINE 1 input.

  • Page 11: Mic/Line 1 Line 2 Line

    BA-260 (60 W). (Example) When MIC/LINE 1, LINE 2, and LINE 3 input signals are output to the Zone 1, and LINE 3 input signals to the Zone 2. (BG-220 or BG-235) (ZONE 1) Sound source A MIC/LINE 1...

  • Page 12: Operation

    Over 10 cm (3.94") 12. RACK MOUNTING BRACKET ATTACHMENT To mount the BG-220 (BG-235) in a standard 19" equipment rack, use the optional MB-25B-BK or MB-25B-J Rack Mounting Kit. Before attaching the rack mounting bracket, remove each 2 frontmost screws on both sides of the unit. These removed screws are not used for rack mounting.

  • Page 13: Volume Setting

    [MB-25B-J] The MB-25B-J is designed to mount two BG-220 (BG-235) units in a single rack. When using this bracket, remove 4 plastic feet on the bottom surface of each unit and joint the 2 units with a joint bracket, as illustrated below.

  • Page 14: Block Diagram

    15. BLOCK DIAGRAM...

  • Page 15: Dimensional Diagram

    16. DIMENSIONAL DIAGRAM Unit: mm (in) 265 (10.43) 249 (9.8) 210 (8.27) 6-M4 (1.57) 165 (6.5)

  • Page 16: Specifications

    17. SPECIFICATIONS Model No. BG-220 BG-235 Power Source 120 V AC, 60 Hz Rated Output 20 W 35 W Power Consumption 60 W (rated output) 90 W (rated output) 36 W (based on cULus standards) 55 W (based on cULus standards) Frequency Response 50 Hz –...

This manual is also suitable for:

Bg-235

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