11
32. Speaker output terminal
Removable terminal block (5.00 mm, 3 pins)
Outputs the audio signals of the MAIN output or
power amplifier output.
(See "BLOCK DIAGRAM" on p. 26.)
70 V line terminal
Low impedance terminal
C terminal
The table below shows the specifications of each
output.
A-812D A-824D A-848D
Rated output
120 W
240 W
480 W
Low impedance
4 to 16 Ω
High impedance
(70 V line)
42 Ω
21 Ω
10 Ω
Notes
• Never use the low impedance and high
impedance terminals simultaneously. Doing so
may cause damage to the unit or the peripheral
equipment.
• Never make connection to 4 Ω terminal when
the Impedance setting switch (33) is set to 70 V.
Tip
To change impedance between high and low, use
the Impedance setting switch (33).
33. Impedance setting switch
Changes the speaker output impedance either to
low or high.
70 V: High impedance
4 Ω: Low impedance
Notes
• Make sure that the power is switched OFF
before changing this switch setting. Change
cannot be performed when the power is on.
• The impedance remains as it is even if you
change the switch setting when the power is ON.
However, the impedance will change when you
turn the power ON again after turning the power
OFF.
34. Network terminal
RJ45 jack
Connect this terminal to the 100BASE-TX network
using a STP Category 5 or greater straight through
cable. A PC can be connected directly to this
terminal without using a hub.
35. Recording output jacks
0 dB*, 600 Ω, unbalanced type, RCA jack x 2
Outputs the audio signals of the SUB output.
(See "BLOCK DIAGRAM" on p. 26.)
Used to record the broadcast contents by
connecting the external recording device to these
jacks.
36. Pre-amplifier output jack
0 dB*, 600 Ω, unbalanced type, RCA jack
Used to input the same audio signal as a speaker
output of the unit into another power amplifier.
37. Power amplifier input jack
0 dB*, 600 Ω, unbalanced type, RCA jack
Input the output of the signal processor or other
devices connected to the preamplifier output
jack. (See "Connecting the External Equipment
between the Pre-amplifier Output and the Power
Connecting a pin plug to this jack disconnects
the power amplifier section from the preamplifier
section inside the unit.
38. Input setting switches (Inputs 5 and 6)
Set which to send the audio signals input from the
Inputs 5 and 6 to the AUDIO or DUCK using the
slide switches.
(See "BLOCK DIAGRAM" on p. 26.)
Output destination
selection switch
Usable input terminal
AUDIO
AUDIO input terminal
( Removable terminal block)
DUCK
DUCK input terminal
(RCA jack)
39. DUCK input jacks (Inputs 5 and 6)
–20 dB*, 10 kΩ, unbalanced type, RCA jack x 2
To use these jacks, select "DUCK" with the Input
setting switches (38).
(See "BLOCK DIAGRAM" on p. 26.)
40. AUDIO input terminals (Inputs 5 and 6)
–60 dB*, 600 Ω, electronically-balanced,
removable terminal block (3.81 mm, 3 pins)
To use these terminals, select "AUDIO" with the
Input setting switches (38).
(See "BLOCK DIAGRAM" on p. 26.)
* 0 dB = 1 V