7
INSTALLATION AND SETUP
For sealed enclosures, use DBO to
enhance the middle of the bass region.
Set the HP FREQ control to 35Hz to
40Hz and adjust the BOOST control to
taste. This will make the bass sound
bigger and fuller. Alternatively, for
tighter-sounding bass, set the HP FREQ
control between 45Hz and 50Hz,
and also adjust the BOOST control
according to your preference.
For infinite-baffle applications, set the
HP FREQ control to the speaker’s F
S
value (to keep the subwoofer from
trying to create bass below the
resonant frequency) and adjust the
BOOST control to taste.
INSTALLING NEON
TUBES (OPTIONAL)
1. Using a Phillips screwdriver, remove
all screws on the amplifier’s
output/power end panel and set
them aside.
2. Using a 3 ⁄32-inch Allen wrench,
remove only the screws on the
amplifier’s (top) clear cover and set
them aside.
3. Remove the end panel and slide the
cover off. Set both parts aside.
4. Locate the enclosed hardware bag
and remove the four clips. Each clip
has a square end and a larger round
end. Using a round end, press two
clips onto each neon tube (e.g.,
Street Glow AN9 or equivalent), as
shown in
Figure 9
below.
5. For each tube, align both clips so the
square ends slide onto an exposed
extrusion edge, as shown in Figure 9.
Do not cover any screw holes. When
installed correctly, each neon tube
will sit under an extrusion and not be
visible when viewed from directly
above.
6. Route each neon tube’s power cable
through its respective NEON hole on
the end panel (see
Figure 9
).
7. Slide the cover back into place and
reinstall its screws. Then, replace
the end panel and reinstall its
screws.
8. Finish the installation of the neon
tubes as instructed in their owner’s
manual.
P
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B
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6
0
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L
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N
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O
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N
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PROTECT
POWER
I-E OPT
Installing A Clip
On Extrusion Lip
(side view)
Clip
Neon
Tube
Neon Tube
and Clip
Lip
Installed Neon Tube
Under Extrusion Lip
Clip
Clip
To Neon
Power
Supply
To Neon
Power
Supply
Px600.2 Amplifier
(top view with clear cover off)
Output/Power
End Panel
Figure 9.
Installing neon tubes in a JBL Px600.2 amplifier.
Installation is similar for other models.
TROUBLESHOOTING
SYMPTOM
LIKELY CAUSE
SOLUTION
No audio
No voltage at BATT+
Check voltages at
(POWER LED
or REM terminals,
amplifier terminals
is off)
or bad or no ground
with VOM
connection
No audio
DC voltage on
Amplifier may need
(PROTECT LED
amplifier output
service; see enclosed
flashes every
warranty card for
4 sec.)
service information
No audio
Amplifier is
Make sure amplifier
(PROTECT
overheated
cooling is not blocked
LED is on)
at mounting location;
verify speaker-system
impedance is within
specified limits (see
“Specifications” on the
next page)
No audio
Voltage less than 9V on
Check vehicle
(PROTECT
BATT+ connection
charging system for
and POWER
defective voltage
LEDs flash)
regulator
I-E/OPT LED
Amplifier is being
Check INPUT
is on all times
overdriven
LEVEL setting;
(not flashing)
see previous page
No audio
Voltage more than 16V
Check vehicle
(PROTECT
or less than 8.5V on
charging system for
LED is on)
BATT+ connection
defective voltage
regulator
Distorted audio
Input sensitivity is
Check INPUT
not set properly, or
LEVEL setting; or
amplifier or source
check speaker wires
unit is defective
for shorts or grounds
Distorted audio
Short circuit in
Remove speaker leads
and PROTECT
speaker or wire
one at a time to locate
LED flashes
shorted speaker or
wire, then repair
Music lacks
Speakers are not
Check speaker
“punch”
connected properly
connections for
proper polarity