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JENSEN
JA SERIES
JENSEN DSP AMP App Operation
The input level control (gain) is used to obtain the best
Input level Control
possible match between the head unit audio output
(Master Level at HOME
and the amplifier input. Begin by turning the input level
Mode)
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
X-OVERMode
( JA2B and JA4B )
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.
JA 1 B (Mono) amp works only with LPF.
X-OVER Mode
(JA1B)
X-OVER Control
This control allows precise adjustment of the crossover
frequency.
This control provides additional boost@ 45Hz when
Bass Boost
used with subwoofers. Adjust this control with caution -
as improper use can damage speakers!
Select between the following EQ presets : Classic, Pop.
EQ Presets
Rock. Jazz. Custom (allows user to enter custom EQ
settings).
Custom EQ from EQ Presets is selected to make the
Custom EQ
customized audio settings and each gain per frequency
can be adjusted at EQ Mode of the App.
It allows the amp illumination to be turned off or on at
RGB Color
RGB mode of the App. One color or multiple colors can
be controlled.
@---�---------
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)
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.
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Low-Level Input
(RCA)
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Note: Do not use both low and high level inputs
at the same time - connect only one or the other.
JENSEN
2 Speakers (stereo)
Speaker (bridged)
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(SPEAKER OUlJ
(SPEAKER OU lJ
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RIQHT@
LEFT
E9----- BRIDGEDMODE-----S
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Typical Stereo Wiring
Typical Bridged Wiring
ohms minimum)
(4 ohms minimum)
(2
Typical speaker connections shown
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 CHASSIS
GROU�O
JASERIES
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