Setup.
Connect all Mini and Centre speakers to your Receiver/amplifier ensuring all
connections are
in phase.
Ie: Positive (+) wires at Receiver/amplifier end connect to Positive wires
(+) at speaker end and vise versa with Negatives (-). See Fig. A. On your Receiver/amplifier, be sure
to select “
SMALL
” when “telling” your receiver if you are using Large or Small Speakers. For your
X-125 Subwoofer, you will need a 1RCA to 1 RCA lead (not supplied) as these come in varying
lengths of 1 to 20 mtrs). One end connects to your receiver/amplifier and the other into either “L” or
“R” Low Level Inputs on Subwoofer amplifier. There is no need to connect to both “L” and “R” as
these are paralleled internally. See diagram below.
Subwoofer amplifier features.
LED on front panel is
Blue
when active and
Red
when on standby (standby mode, like on a TV draws next to no power). Switch the Subwoofer
amplifier switch to
“AUTO”
and this can be left on indefinitely as the Subwoofer automatically
activates when it senses as incoming signal. LED’s will then turn
Blue.
After signal has been
removed between 15 and 40 minutes, amplifier will revert to Standby mode and LED will change to
Red.
•
Gain Knob
is your volume knob. This adjusts the output of your Subwoofer to balance
and harmonize with output of your 5 x Satellite speakers. DO NOT set this on maximum. Be
careful not to advance this control too far as overload may occur causing damage to your
Subwoofer speaker (see below setting recommendations).
•
Freq Knob.
This control adjusts how low (in frequency) you wish your Subwoofer to
operate at. In other words, 70 Hz is a lower and deeper frequency than 90Hz, so if you set at
70Hz you will be amplifying all music information
70Hz and below
and filtering out
everything above which is the ideal intention of a powered Subwoofer. Take care not to
advance this control too far as overloading may occur (see below recommendations).
•
Phase Switch
If you are using one Subwoofer in the room switch this to “NOR”. If you
are game, you can add as many JENSEN Subwoofers as you like within the room all daisy-
chained together. If more than one Subwoofer is used simultaneously, then all Subwoofers
need to be “in Phase” with each other so that “bass canceling does not occur. If you do this,
connect all your subwoofers up and switch each from “NOR” (Normal) to “REV” (Reverse)
and simply leave on setting that provides the most Bass. This will be the best setting and be
correctly “in phase”.
•
Line Output sockets
are provided for stringing additional subwoofers using an
additional 1RCA to 1 RCA lead. If required, you may “daisy-chain” as many JENSEN
subwoofers together as you like for massively increased Bass performance.
Where should I set Gain & Freq. Control Knobs ??
Once you have your JENSEN X-125 Subwoofer positioned and connected, we suggest
experimenting with the Level Control knob and Frequency Control knob to suit the Volume and
depth of Bass desired. Initially, for Hi-Fi listening, try setting the
Gain knob
at 1 o’clock
and the
Freq. knob at 100Hz.
This is the most popular setting. This setting will boost Bass information
100Hz and below – which is deep, deep Bass at a strong (but not overpowering) level. For Home
Theatre listening (movies), increase the
Gain knob
to 3 o‘clock
and lower the
Freq. knob to 80Hz
.
This will enormously enhance all Bass information 80Hz and below to a boosted Bass setting so
when dinosaurs, earthquakes and explosions kick-in,
they kick in !!
Refrain from turning Level
Control beyond 4 o’clock as Bass will then overpower all other music. Also, overpowering may
incur amplifier damage, Cone damage or both.
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