JL Audio 300/2 User manual

Set "Filter Freq."
to "80" (24 clicks)
Adjust "Boost" to
"+3" initially
Adjust "Input Sens." to
achieve desired output
level from subwoofer
Connect to
CS112-W3
Connect to head unit
line level output
Connect to input
of 300/2 Amplifier
Set "Filter Freq." to
80 Hz (15 clicks)
Adjust "Input Sens."
to achieve desired output
level from front speakers
Left Speaker output to both left speakers (8Ωresistor inline with rear)
Right Speaker output to both right speakers (8Ωresistor inline with rear)
Connect to 250/1
preamp outputs
This section is not
used in this application
= POSITION
Recommended initial amplifier settings for this system...
8Ω25w
Resistor
8Ω25w
Resistor
XR650-CX
(Left Rear)
XR650-CX
(Right Rear)
XR650-CS
(Left Front)
250/1
CS112-W3
(Subwoofer)
XR650-CS
(Right Front)
Aftermarket Head Unit
300/2
Note: These settings are intended as a “baseline” for tuning this system. Depending on the vehicle and the customer’s
tastes, some variation in the crossover and bass control settings may be necessary for optimum performance.
SYSTEM 8:
Audiophile Single-
Subwoofer System
This is a perfect setup for the
customer who wants the highest
levels of sound quality but is not
interested in huge bass.
The single 12W3 in the
CS112-W3 provides strong output
and excellent bass quality without
taking up a ton of trunk space. It's
driven by a 250/1 monoblock.
The four XR systems (XR650-CS
in the front, XR650-CX in the rear)
are cleanly driven by the 300/2.
This system is shown connected
to a single pair of line level outputs
at the head unit. In this configuration,
front-to-rear fading is not possible
and subwoofer level must be
carefully preset.
RCA Cable (pair)
Speaker Wire
Remote Lead