2 Ohm Nominal
Component
Speaker System
OWNER’S MANUAL
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FEATURES
SPL 6 Midrange / Woofer
The SPL 6 is an excellent performer with a combination of high
sensitivity, solid bass and smooth response throughout the audible
range.
· Lightweight Cone designed for good rigidity and high sensitivity
· 2 Ohm Voice Coil for increased output
SPL 1 Aluminum Dome Neodymium Tweeter
The SPL 1 tweeter is a high performance 1” Neodymium tweeter
designed to deliver outstanding high frequency reproduction.
· Black Aluminum 1" dome for improved power handling and
linear response
· Ferrofluid-immersed Voice Coil enhances heat dissipation
· Vented Aluminum Voice Coil Former for superb heat dissipation
and high power handling
SPL 6X Passive Crossover Network
The SPL 6X crossover consists of high quality, multi-element
components with a two position tweeter level control. This allows
tailoring high frequency output to the installation and individual
preferences.
· 24 dB/octave Acoustic Summation Crossover Slopes
· Variable tweeter control for added flexibility
· Dynamic tweeter protection allows for improved power handling
and continuous output
· Ultra-low DCR Inductors for minimal signal loss (High power
Ferrite in woofer path)
2 Ohm Nominal System Impedance
The 2 Ohm impedance design of the SPL 60 system provides an overall
3 dB increase in output compared to a 4 Ohm design.
· Effectively a doubling of Sound Pressure Level -- withthesame
amplifier voltage output
· More stable, phase coherent load than two 4 Ohm speakers
operating in parallel
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LOCATION
AND
MOUNTING
The first step in a successful installation is thorough
planning. Choose the location for your speaker
components carefully. Follow these suggestions to
ensure proper imaging and the best performance:
· Select a location where each tweeter and
midrange/woofer can be mounted close to each
other. A good rule of thumb is a maximum of
one foot from cone to tweeter.
· Choose
a
location that offers the least
obstruction of sound to your ears.
· Try to mount the components on the same plane.
· Always check behind the chosen mounting
locations to make sure that there are no
obstructions (e.g., trunk springs, gas tank,
window tracks) or wires in the way, as well as to
make sure that there is ample support on which
to mount the components.
INSTALLING Flush Mounting:
THE
TWEETER
1) Cut a 2 1/16” (52mm) diameter hole through the
mounting surface. If the surface is covered with
cloth or carpet, be careful not to tear or pull the
material. Sometimes it is a good idea to peel the
material away, and then trim it by hand.
2) Secure the cup in the mounting cutout by using
the spring clips and screw provided. Slip the
spring clips through the bottom of the cup and
tighten the screw until the cup is firmly seated.
See Figure 1.
3) Once the cup is secure, mount the tweeter into
the cup making sure to first pass the tweeter
wires through the openings in the cup. Turn the
outer swivel ring, (not the tweeter) clockwise to
lock it into place. See Figure 2. The tweeter
may be tilted approximately 15 degrees to
optimize dispersion and imaging.
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1/4” 6-32 machine
screw
Turn Clockwise to Lock
Flush mount
cup
Mounting
surface
Spring
clip
FIGURE 1
FIGURE 2
Surface Mounting:
1) Drill one 5/16" diameter hole for the tweeter lead wires and two pilot
holes for the mounting screws.
2) Attach the surface mount plate with two flat head screws.
3) Pass the lead wires through the hole. See figure 3.
4) Engage the locking holes on the back of the tweeter onto the tabs on
the plate and rotate counter-clockwise until locked. See figure 4.
Turn Counter-Clockwise to Lock
FIGURE 3
FIGURE 4
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The SPL 6 Midrange/Woofer can be mounted on
the front or rear of a panel; gaskets are provided
for both options. The bolt hole configuration will fit
a variety of American, European and Asian OEM
patterns making it ideal for direct placement. Best
performance is achieved when the speaker is
securely mounted to a door panel or rear deck.
There should be no gaps between the speaker and
the mounting surface, as this will impair its low
frequency performance. Be certain that both the
panel and the speaker are securely mounted to
prevent unwanted vibration.
INSTALLING
THESPL6
MIDRANGE/
WOOFER
1) Mark the speaker location by using the
template provided.
2) Cut the opening and debur the edges with a
file.
3) Hold the speaker in place against the
mounting surface and mark the mounting bolt
holes.
6) Drill the appropriate size hole for the screws
provided.
7) Place the SPL 6 into the trim ring, make the
speaker wire connections, then install the
speaker/trim ring assembly to the panel using
The SPL 6X Passive Crossover can be mounted
in virtually any location inside the vehicle. Be
sure not to mount the SPL 6X outside the vehicle,
or in a location where it may be exposed to dirt or
moisture (e.g., the engine compartment, inside a
wheel housing, at the bottom of a leaky trunk,
inside a door).
MOUNTING
THE SPL 6X
CROSSOVER
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Tweeter Attenuation
TWEETER
LEVEL
CONTROL
The SPL 60 system has been designed to provide
optimum sound in a variety of installation locations. The
provided crossover allows for 2 positions of tweeter
level control, 0dB and -3dB. A switch under the plastic
crossover cover sets one of the two positions. The
factory setting is 0 dB.
Tweeter Level
Control Switch
FIGURE 5
SPL 6 Wiring Diagram
WIRING
Figure 6 shows a diagram illustrating the wiring of the
SPL 60 Component Speaker System. It is important to
make sure that all connections are in phase; that is
positive (+) is connected to positive (+), and negative (-)
is connected to negative (-) since an out-of-phase
connection will cause a dislocated image and low bass
output.
We suggest using premium cable.
The
connectors provided with this system will accommodate
wire from 12 gauge to 16 gauge.
Head Unit
Amplifier
SPL 6X
Crossover
SPL 1 Tweeter
SPL 6 Woofer
FIGURE 6
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SPECIFICATIONS
SPL 60 System Specifications
Frequency Response
55 Hz - 20,000 Hz ±3dB
Sensitivity
94 dB SPL at 1 meter (2.83 Volts)
100 dB SPL at .5 meter (2.83 Volts)
Continuous Power Handling
Peak Program Power Handling
Nominal Impedance
50 watts
100 watts
2W
Crossover Slope Rate
24 dB/octave ASC
Crossover Dimensions
2 5/8” (W) x 1 3/8” (H) x 4 3/4” (D)
SPL 6 Midrange/Woofer
Frequency Response
Continuous Power Handling
Peak Program Power Handling
Sensitivity
55 Hz - 3200 Hz ±3dB
50 watts with SPL 6X Crossover
100 watts with SPL 6X Crossover
94 dB SPL at 1 meter (2.83 Volts)
Nominal Impedance
2W
Nominal Driver Diameter
Mounting Cut-Out Diameter
Mounting Depth
6 1/2”
5 5/8”
2 3/4”
SPL 1 Metal Dome Tweeter
Frequency Response
3200 Hz - 20,000 Hz ±3dB
Sensitivity
94 dB SPL at 1 meter (1 watt)
Nominal Impedance
4W
Nominal Tweeter Diameter
Mounting Cut-Out Diameter
Mounting Depth (flush mount)
1”
(Rev A, 1/3/97)
2 1/16”
3/4"
120 Blue Ravine Road Folsom
tel 916.351.1288
California 95630 USA
fax 916.351.0414
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