JENSEN
JA SERIES
JENSEN DSP AMP App Operation
Input level Control
(Master Level at HOME
Mode)
X-OVERMode
( JA2B and JA4B )
The input level control (gain) is used to obtain the best
possible match between the head unit audio output
and the amplifier input. Begin by turning the input level
control fully counterclockwise. Next. tum up the head
unit volume control around 3/4 of the way up. Adjust the
input level control clockwise until audible distortion is
heard, then slightly counterclockwise to provide the best
match. Repeat for all input level controls.
The crossover is used to filter out frequencies above
or below a certain point. Choose LPF when using
the amplifier with subwoofers. HPF when using with
midrange/tweeter combinations and FULL when using
with coaxial-type speakers.
Note: Choose FULL when using the amplifier in stereo/
bridged simultaneous mode. In this mode. passive
crossovers are required. Failure to use the correct
passive components may damage the amplifier and/
or speakers. Consult a qualified professional for
recommendations.
X-OVER Mode JA 1 B (Mono) amp works only with LPF.
(JA1B)
X-OVER Control This control allows precise adjustment of the crossover
frequency.
Bass Boost This control provides additional boost@ 45Hz when
used with subwoofers. Adjust this control with caution -
as improper use can damage speakers!
EQ Presets Select between the following EQ presets : Classic, Pop.
Rock. Jazz. Custom (allows user to enter custom EQ
settings).
Custom EQ Custom EQ from EQ Presets is selected to make the
customized audio settings and each gain per frequency
can be adjusted at EQ Mode of the App.
RGB Color It allows the amp illumination to be turned off or on at
RGB mode of the App. One color or multiple colors can
be controlled.
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JENSEN
JASERIES
Amplifier Connections
Speaker Connections
Connect speaker wires
observing polarity. The
minimum impedance load
for the amplifiers is 2 ohms
stereo and 4 ohms bridged.
Use of loads lower than these
is not recommended and may
cause amplifier damage. The
amplifiers can be wired for
stereo, bridged or stereo/
bridged simultaneous
operation.
Input Signal Connections
Low Level Input (RCA)
2 Speakers (stereo)
(SPEAKER OUlJ
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••••
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RIQHT@
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o
LEFT
e
Typical Stereo Wiring
(2
ohms minimum)
Speaker (bridged)
(SPEAKER OUlJ
I
•• ••
I
E9----- BRIDGEDMODE-----S
L@}J
Typical Bridged Wiring
(4 ohms minimum)
Typical speaker connections shown
Low level (RCA) input signal is preferred for best performance. Typical trunk-mount
amplifier installations require a 17-20 foot RCA cable. Most trucks and under-seat
applications require a 6-9 foot RCA cable. Using twisted pair construction RCA
cables will minimize noise.
Low-Level Input
(RCA)
':-CIJRCE.3
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High Level Input
(Speaker Wire)
High level inputs should only be used
when RCA outputs are not available from
the head unit. Connect the head unit
speaker outputs to the high level input
connector as shown below. The black wire
(signal reference ground) may or may not
require a connection to chassis ground -
depending on your particular installation.
TO CHASS
I
S
GROU�O
Note: Do not use both low and high level inputs
at the same time - connect only one or the other.
