Toa BG-235 - Manual (Page 9)

9
6.4. Manual Mute Terminal Connection
Closing the manual mute (+) and (–) terminals
causes the Mute Receive inputs to be muted
(the inputs set to be muted). MANUAL
MUTE MIC / LINE 1
H C + - E
Short-circuit current:
Open voltage: 1 mA or less
35 V or less
6.2.2. LINE 2, LINE 3 input connections
LINE 2
H E
E
H
Input source
Input source
Input source
H
E
H
E
Upper and lower RCA inputs are internally, passively mixed.
6.3. Output Connections
6.3.1. Speaker connections
Each amplifier has 3 speaker outputs: 4 Ω, 25 V, and 70 V. Use only one of these outputs for connection.
Class 2 wiring may be used.
Note: Impedances in the figures below represent total speaker load impedance.
70 V LINE
Total impedance
245 Ω (BG-220)
140 Ω (BG-235) 25 V LINE
Total impedance
31 Ω (BG-220)
18 Ω (BG-235)
Speaker output terminal
COM 4 Ω
Speaker output terminal
COM 25 V
Speaker output terminal
COM 70 V
4 – 16 Ω 70 V Line 25 V Line
The terminals marked with the symbol are hazardous live.
The external wiring to these terminals requires installation by an
instructed person.
WARNING
6.3.2. MOH output connection
The MOH output is 0 dB*, 600 Ω, and balanced (transformer-isolated).
* 0 dB = 1 V
MOH OUT (ZONE2)
600Ω
H C E
MOH OUT (ZONE2)
600Ω
H C E
Note
C
E
H
E
H
When connecting equipment with
unbalanced input, short-circuit the "C"
and "E" lines as shown at right.
6.3.3. Line output connection
The Line output is 0 dB*, 600 Ω, and unbalanced.
* 0 dB = 1 V
LINE OUT
600Ω
H E
E
H