3
Rear Panel
NL4 SpeakON OUTPUT TERMINAL A/B
NL4 Speaker wire connection
CH A: 1+ = (A+), 1- =(A-)
2+ = (B+), 2- = (B-)
Bridge connection: 2+ = (+), 1- = (-)
CH B: 1+ = (B+), 1- =(B-)
INPUT TERMINAL A/B XLR (CANON TYPE)
THROUGH OUTPUT TERMINAL A/B (CANON TYPE)
To be connected to another amplifier.
MODE SLECTOR SWITCH
PARALLEL: (A+B) Monoral.
STEREO: (A), (B) Stereo.
BRIDGE: (A), (B) Bridge connection.
1
3
2
5
6
2 Channel
(AK-D1020, AK-D1820)
4
INPUT SENSITIVITY SELECTOR SWITCH
Input sensitivity: 0.775V, 1V, 1.44V.
BRIDGE
SENSITIVITY
SERIAL NO.
AC220V - 240V/50Hz
SPEAKER
CONNECTION:
B
A
PIN 1+ =B
PIN 1- =B
PIN 2+ =B
PIN 2- =B
PIN 1+ =A
PIN 1- =A
PIN 2+ =
PIN 1- =
INPUT
THROUGH OUT
B
A
B
A
0.775V
1.4V
1.0V
BRIDGE
PARALLEL
STEREO
Made in China
JAPAN
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK. DO NOT EXPOSE THIS APPLIANCE TO
RAIN OR MOISTURE
WARNING
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
QR CODE
PROFESSIONAL D-CLASS POWER AMPLIFIER
～
220V-240V/50Hz
MODEL
AK-D
COOLING FAN
How to connect to
NL4 “SpeakON” Terminal.
1+
1-
2+
2-
POWER SWITCH
SWITCH For On And Off.
VOLUME
CH-A, CH-B, CH-C, CN-D.
4
5
1
2
SIGNAL INDICATOR
CLIP INDICATOR
PROTECTION INDICATOR
An LED indicates at the time of operating protection.
3
POWER INDICATOR
6
P
rofessional
D
-Class
P
ower
A
mplifire
Power
Min
Max
CH B
Min
Max
CH D
Min
Max
CH A
Min
Max
CH C
Clip
Prot
-10
-40
Clip
Prot
-10
-40
Clip
Prot
-10
-40
Clip
Prot
-10
-40
4 Channel (AK-D1040)
2
1
4
3
5
3
2
1
5
6
6
4