FULL RANGE
STEREO LINE INPUT
NOT USED
Y-ADAPTOR
Note: You can use the Radio/CD designated mono line output
or a full range stereo line output. For full range stereo line output,
you will need an optional “Y-Adaptor” as shown
PARALLEL MONO
SUBWOOFERS
2-
OHMS EACH MINIMUM
GN
D
RE
M
+1
2V
PO
W
ER
IN
PU
T
F
US
E
SP
EA
KE
R
OU
TP
UT
+
+
-
-
6
AT2000.1 / AT3000.1 / MONO AMPLIFIER APPLICATIONS
Basic application
SUBSONIC:15 Hz to 55 Hz
These sub bass amplifiers can be used in any of the bi-amplification systems
BASS EQ: 0 to +12dB
described in this manual, replacing the 2 channel amplifiers as per the
illustrations.
PHASE: 0 to 180 degrees
Interconnect cable checklist:
Connect the inputs to a suitable source, e.g. a head unit with good quality RCA
Level control checklist:
cables. Connect the LINE OUT to the inputs of the system highs amplifier.
Refer to the section
“Setting up systems after installation for best performance”
Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,
Minimum final loudspeaker impedance: 1-Ohm.
simplifying the hookup of multiple speakers
Crossover frequency control checklist:
LOW PASS: 35Hz to 250Hz
GN
D
RE
M
+1
2V
PO
W
ER
IN
PU
T
F
US
E
SP
EA
KE
R
OU
TP
UT
+
+
-
-
OU
TP
UT
IN
PU
T
BA
SS
S
UB
L
OW
RE
M
OT
E
CO
NT
RO
L
PO
W
ER
PR
OT
EC
T
R
R
L
L
0d
B
12
dB
1
5H
z 5
5H
z
40
Hz
15
0H
z
6
V
0.2
V
BO
OS
T
S
ON
IC
PA
SS
LE
VE
L
REMOTE TURN-ON
CHASSIS GROUND
TO B12 Volts VIA FUSE
DESIGNATED MONO
OUTPUT FROM HEAD UNIT
MONO
SUBWOOFER
utotek
a
0dB
18dB
ATR-1
