JL Audio W7 Owner's Manual page 10

REcOMMENDED cONTINUOUS (RMS) POWER RANGE fOR ONE SUBWOOfER DRIVER:
2 5 0 W 5 0 0 W
Amplifier Recommendation:
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)
10
7 5 0 W 1 0 0 0 W
500/1v2 (pictured), HD750/1
or G-MAX
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.
Infrasonic Filter:
Turn "Off" for Sealed Enclosure.
Turn "On" for Ported Enclosure and
set the knob to "25" Hz.
Remote Bass Port: Amp Low-Pass Filter:
Permits connection of an Set "Mode/Slope" switch to "24dB".
optional remote bass boost Set "Filter Freq. (Hz)" knob to "85".
controller (RBC-1), giving you Lower settings are likely to result in a
control over the boost of the poor transition between the upper
parametric EQ from the front response of the W7 and the lower
of the vehicle. The RBC-1 response of the mid-bass speakers.
controller is sold separately.
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.
2 0 0 0 W 4 0 0 0 W
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.
Ampli er Input:
Connect RCA-type
cables from the head
unit (or processor) to
these two jacks.
Use both jacks
(with a Y-adapter
if necessary).
Dual Mono Speaker
Output Connections:
Connect wire directly to "+"
and "–" "Subwoofer Output"
connections and to the W7.