Important
Use either the low level or high level input, do not
use both at same time.
Low level input
Use a pair of shielded stereo audio cables with RCA
type jack. Most trunk-mount amplifiers need a 20
feet RCA cable ( appr 5 – 6
meters). Most under the seat
installations require 12 feet
( 2 – 3 meters) RCA cables.
Avoid placing the RCA cable
close to speaker cables,
power cables and remote
control cable. Connect to in-
put socket R/L.
X-D50
have three inputs, Front R/L, Rear R/L and
one for the mono sub channel.
Depending on your chosen configuration you can
use either three separate RCA cables, or two RCA
cables using the
Parallel input
switch to connect
rear and sub inputs in parallel.
Input and controls
Low level Input Wiring
Inputs may be low level from the RCA output of the car
stereo or high level from the car stereo speaker out-
put. Low level = RCA is to prefer for the best sound
quality.
Connect left and right speaker wires coming from
the car stereo to the high level input as shown. You
must connect both plus and minus as the inputs are
balanced, connecting plus only gives lower level and
bad sound quality. By changing the polarity of plus
and minus, you can change the phase.
X-D50
On X-D50 the high level signal is fed internally to
channel SUB when using high level input.
5
Hi level input plug on amp for CH L/R.
High Input
(Rear)
Violet: L ch.+
Violet/Black: L ch.-
Green/Black: R ch.-
Green: R ch.+
Hi level input plug on amp for CH L/R.
High Input
(Front)
White: L ch.+
White/Black: L ch.-
Grey/Black: R ch.-
Grey: R ch.+
High level input socket
Automatic turn on when using high level input.
The amplifier turns on automatically when using high
level input, you dont need to connect a separate
remote wire from your head unit.
For a soft turn ON /OFF operation we recommend
you to use a remote wire, if this is available.
High Level Input wiring
Parallel input on X-D50
If you don’t have dual line cables to
rear and sub input you can use a
single line cable. Connect to the rear
stereo input sockets and set the
Parallel input swich to position ”P-
sub” and the signal is fed to the Sub
input socket automatically.
Parallel
input
Off
P Sub
