JL Audio W7 - Manual (Page 10)

Bass EQ:
Generally not necessary in W7 applications (we recommend defeating it by
switching the “Bass EQ” switch to “Off”). May be used with Remote Bass
Control to provide some user controllable broad bass boost. When used in this
manner, set “Q” to “1.1”, set “Center Freq.” to “45” Hz, “Boost” is defeated by
connection of Remote Bass Control.
Remote Bass Port:
Permits connection of an
optional remote bass boost
controller (RBC-1), giving you
control over the boost of the
parametric EQ from the front
of the vehicle. The RBC-1
controller is sold separately.
Amp Low-Pass Filter:
Set “Mode/Slope” switch to “24dB”.
Set “Filter Freq. (Hz)” knob to “85”.
Lower settings are likely to result in a
poor transition between the upper
response of the W7 and the lower
response of the mid-bass speakers.
Amplifier Input:
Connect RCA-type
cables from the head
unit (or processor) to
these two jacks.
Use both jacks
(with a Y-adapter
if necessary).
Infrasonic Filter:
Turn “Off” for Sealed Enclosure.
Turn “On” for Ported Enclosure and
set the knob to “25” Hz.
Input Sensitivity Controls:
Proper adjustment of these controls is critical!
For virtually all aftermarket head units,
set “Input Voltage” to “Low”.
See “Input Sensitivity Setting Guide”
on pg. 14 for precise setting instructions. Dual Mono Speaker
Output Connections:
Connect wire directly to “+”
and “–” “Subwoofer Output”
connections and to the W7.
10W7-3
free Air Resonance (fs): 30.6 Hz
Electrical “Q” (Qes): 0.578
Mechanical “Q” (Qms): 7.647
Total Speaker “Q” (Qts): 0.537
Equivalent compliance (Vas): 1.28 cu. ft. (36.1 ltrs)
One-Way, Linear Excursion (Xmax)*: 0.9 in. (23 mm)
Thermal Power Handling (Pt): 750 Watts Continuous
Reference Efficiency (no): 0.171 %
Efficiency (SPL @ 1W/1m): 84.3 dB
Dc Resistance (Re): 2.75Ω
Effective Piston Area (Sd): 59.8 sq. in. (0.0386 sq. m)
Nominal Impedance (Znom): 3Ω
* Xmax specifications are derived via one-way voice coil overhang method with
no correction factors applied.
REcOMMENDED cONTINUOUS (RMS) POWER RANGE fOR ONE SUBWOOfER DRIVER:
5 0 0 W 7 5 0 W 1 0 0 0 W 2 0 0 0 W 4 0 0 0 W 2 5 0 W
JL Audio 500/1v2:
These settings are intended
as a “baseline” for tuning
your system. Depending
on your vehicle and your
preferences, some variation in
the crossover and bass control
settings may be necessary
for optimum performance.
= position of knob
= position of switch
= switch with two possible positions
= setting will vary (see sidebar)
Amplifier Recommendation: 500/1v2 (pictured), HD750/1
or G-MAX
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