Page 5
Phase Control
All three X2 Series Monoblock amplifiers include a PHASE
switch that allows you to invert the polarity of the signal being
passed through the amplifier. Setting this switch to OUT has
the same effect as reversing the positive and negative speaker
leads.
Bass Boost and Frequency Control
These amplifiers have an adjustable Bass Boost acts like a
single-band para-graphic equalizer. Use the BASS BOOST
control carefully. Increasing low-frequency output puts
tremendous demands on the speaker and amplifier.
The BASS BOOST control determines how much boost
is applied to the signal and is adjustable from 0 to +12dB.
The BASS BOOST FREQ control determines around what
frequency the boost is applied.
Input Source
All three X2 Series Monoblock amplifiers include an input
source selector switch. This switch makes it easy to daisy-
chain multiple amplifiers together. In NORMAL mode, these
amplifiers will source the audio signal from the two INPUT
RCA jacks on the front panel. In SLAVE mode, these amps
source the audio signal from the SLAVE IN RCA jack on the
front panel. This jack should be connected to the SLAVE OUT
jack of an identical Master amplifier using an RCA interconnect
cable.
Using the SLAVE IN connection will bypass all but the PHASE
Control switch on the Slave amplifier and use only those on the Master amp.
Slave Connections
As outlined above under the INPUT SOURCE description, All
three X2 Series Monoblock amplifiers include an audio signal
input and output connection that can be used to daisy-chain
multiple identical X2 Series Monoblock amplifiers together.
On the main amplifier, the RCA Interconnection wires should
be connected to the RCA INPUT and the SLAVE OUT Jacks.
If only one Slave amp will be used, connect the SLAVE OUT
from the master amp to the SLAVE IN on the second amp. If
additional amplifiers are required, repeat the SLAVE OUT to
SLAVE IN connection from the previous amplifier in the signal
chain.
Remote Level Control
The X2 Series Monoblock amplifiers ship with a remote level
control that can be installed in near the driver’s seat so the
owner can adjust the level of a subwoofer.
To set the gains on these amplifiers, either leave the Remote
Level Control disconnected or turn it to it’s maximum setting
(fully clockwise). The Remote Level Control functions as an
attenuator so as not to alter the gain structure of the amp and
cause distortion, unlike a remote bass boost control.
20.92 [531,35mm]
XDi 2500.1 REV 2.04
CROSSOVER
FREQ Hz
OFF
DC
DETECT
SIGNAL
DETECT
SLAVE IN
SLAVE OUT
SUB
1
Ω
MIN
FUSE 40 AMP X 6
+12
V
GND
TURN ON
INPUT
REMOTE
LEVEL
DO NOT BRIDGE
OR STRAP
X2 2500
.1
20.92 [531,35mm]
XDi 2500.1 REV 2.04
CROSSOVER
FREQ Hz
OFF
DC
DETECT
SIGNAL
DETECT
SLAVE IN
SLAVE OUT
SUB
1
Ω
MIN
FUSE 40 AMP X 6
+12
V
GND
TURN ON
INPUT
REMOTE
LEVEL
DO NOT BRIDGE
OR STRAP
X2 2500
.1
20.92 [531,35mm]
XDi 2500.1 REV 2.04
CROSSOVER
FREQ Hz
OFF
DC
DETECT
SIGNAL
DETECT
SLAVE IN
SLAVE OUT
SUB
1
Ω
MIN
FUSE 40 AMP X 6
+12
V
GND
TURN ON
INPUT
REMOTE
LEVEL
DO NOT BRIDGE
OR STRAP
X2 2500
.1
20.92 [531,35mm]
XDi 2500.1 REV 2.04
CROSSOVER
FREQ Hz
OFF
DC
DETECT
SIGNAL
DETECT
SLAVE IN
SLAVE OUT
SUB
1
Ω
MIN
FUSE 40 AMP X 6
+12
V
GND
TURN ON
INPUT
REMOTE
LEVEL
DO NOT BRIDGE
OR STRAP
X2 2500
.1
20.92 [531,35mm]
XDi 2500.1 REV 2.04
CROSSOVER
FREQ Hz
OFF
DC
DETECT
SIGNAL
DETECT
SLAVE IN
SLAVE OUT
SUB
1
Ω
MIN
FUSE 40 AMP X 6
+12
V
GND
TURN ON
INPUT
REMOTE
LEVEL
DO NOT BRIDGE
OR STRAP
X2 2500
.1
