Power switch
volume knob
Low Pass Cutoff Frequency Knob
RCA input
XLR analog input
Line/Bluetooth input selector switch
Full-range/low-pass selector switch
Stereo/BTL selector switch
XLR / RCA selector switch (for BTL)
bluetooth clearing
bluetooth antenna
Speaker output right channel
Speaker output left channel
Power input (AC IN 100~240V)
8
9
10
11
1
2
3
4
5
12
70Hz
200Hz
STEREO
BTL
LINE
BT
A20a
XLR(BTL)
L
R(BTL)
LINE IN
XLR
RCA
1
2
3
5
4
14
6
7
11
8
12
13
6
13
A20a
9
7
10
14
Function and Operation Introduction
A20a
