Precision Power MP3 Player PC4200 User Manual

POWERCLASS™  
PC4200 / PC4400 / PC4800 / PC6600 OWNER’S MANUAL  
CONTENTS  
(click on a topic to view)  
CONGRATULATIONS  
QBASS / QBASS REMOTE  
FEATURES / SPECIFICATIONS  
FEATURES / SPECIFICATIONS (cont.)  
INSTALLATION  
CROSSOVER OPERATION  
FREQUENCY DETENT CHARTS  
INPUT COMBINE / GAIN  
THERMAL MANAGEMENT  
TROUBLE SHOOTING  
WIRING  
WIRING (continued)  
POWER / GROUND  
SYSTEM DIAGRAM ONE / TWO  
SYSTEM DIAGRAM THREE  
SYSTEM DIAGRAM FOUR  
SYSTEM DIAGRAM FIVE  
SYSTEM DIAGRAM SIX  
POWER, GROUND, and REMOTE  
SPEAKER WIRING  
BRIDGING  
REAR ENDPLATE DIAGRAMS  
FRONT ENDPLATE PC4200 / PC4400  
FRONT ENDPLATE PC4800  
FRONT ENDPLATE PC6600  
BLOCK DIAGRAM 4200 / 4400  
BLOCK DIAGRAM 4800  
BLOCK DIAGRAM 6600  
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WARRANTY  
FEATURES / SPECIFICATIONS  
Your new amplifier incorporates some or all of the following features:  
Adaptive MOSFET Switching Power Supply  
Fully Complementary Darlington Output Stage  
AP III Protection Circuitry (PC4200, PC4400, PC6800)  
AM IV Protection Circuitry (PC4800)  
QBASS Bass Boost (PC4200, PC4400)  
QBASS PLUS (PC4800, PC6600)  
QBASS REMOTE Compatible (PC4800, PC6600)  
PowerLock Speaker and Power Wire Connectors  
Detented, Variable 3-way Internal Crossover  
Non-Fading Sub Channel  
Balanced Differential Input Stage  
High Voltage Input Capability with Input Attenuation Switch  
Gold Plated RCA Input and Output Connectors  
Mixed Mono/Stereo Operation  
3 Year Warranty when installed by an Authorized PrecisionPower Dealer  
Completely Designed And Handcrafted In The USA  
Specifications  
Power Bandwidth:  
Total Harmonic Distortion:  
Input Topology:  
4.5 Hz - 100 kHz  
0.02 %  
Differential  
Input Sensitivity:  
Input Impedance:  
Load Impedance (stereo)  
Load Impedance (bridge)  
Supply Voltage  
150mv - 12 volts RMS  
10k Ohms  
2 - 8 Ohms  
4 - 8 Ohms  
11 - 15 volts  
Damping Factor  
>500  
>50 V/µS  
Slew Rate  
Idle Current:  
PC4200 / PC4400 - 1.5 Amps  
PC4800 - 3.0 Amps  
PC6600 - 2.0 Amps  
Continuous Output Power  
PC4200  
PC6600  
25 WRMS x 4 @ 4per channel  
50 WRMS x 4 @ 2per channel  
100 WRMS x 2 @ 4bridged  
50 WRMS x 6 @ 4per channel  
100 WRMS x 6 @ 2per channel  
200 WRMS x 3 @ 4bridged  
PC4400  
PC4800  
50 WRMS x 4 @ 4per channel  
100 WRMS x 4 @ 2per channel  
200 WRMS x 2 @ 4bridged  
100 WRMS x 4 @ 4per channel  
200 WRMS x 4 @ 2per channel  
400 WRMS x 2 @ 4bridged  
1
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FEATURES / SPECIFICATIONS  
QBASSand QBASS PLUSSpecifications  
QBASS  
(PC 4200, PC4400, and PC 6600)  
Up to 12dB of Boost centered at 40Hz, with a Q-Factor of 2.  
QBASS PLUS  
(PC 4800)  
Up to 18dB of Boost with selectable center frequency at 30Hz, 36Hz,  
44Hz or 60Hz. Selectable Q of 2 or 4. Optional remote mounted  
Boost Control.  
TE  
Optional QBASS REMOTE (PC 4800)  
REMO  
ASS  
B
This boost control can be mounted  
in the dash and will supersede the  
boost control on the amplifier endplate.  
Q
Designed and handcrafted in the USA  
Q
B
ASS  
Optional QPORTexpansion module  
allows one QBASS REMOTEto  
operate multiple amplifiers. Each  
QPORThas outputs for four amplifiers  
as well as another QPORTfor greater  
+18  
expansion. See your authorized PrecisionPower  
dealer for more information!  
Crossover Specifications  
PC4200 / PC4400  
Front - 12dB/Octave, Detented High Pass 20-5kHz  
Rear - 12dB/Octave, Selectable Detented High or Low Pass 20-5kHz  
RCA Out-Summed Mono 24dB/Octave, Linkwitz-Riley Low Pass, 90Hz  
QBASS™ on Rear Channel  
PC4800  
Front - 12dB/Octave, Detented High Pass 20-5kHz  
Rear - Choice of 12dB/Octave Detented High Pass 20-5kHz, or  
Summed Mono 24dB/Octave, Linkwitz-Riley Detented Low Pass 44-315Hz  
RCA Outputs will be the opposite of your Rear Crossover choice.  
QBASS PLUS™ on Rear Channel  
PC6600  
Front - 12dB/Octave, Detented High Pass 20-5kHz  
Rear - 12dB/Octave, Detented High Pass 20-5kHz  
Sub-Summed Stereo 24dB/Octave, Linkwitz-Riley Low Pass at 90Hz  
QBASS PLUS™ on Sub Channel.  
Dimensions  
PC4200  
PC4400  
PC4800  
PC6600  
Length - 23.72"  
Height - 2.25"  
Width - 8.9"  
Length - 12.22" Length - 13.72"  
Height - 2.25" Height - 2.25"  
Length - 19.72"  
Height - 2.25"  
Width - 8.9"  
Width - 8.9"  
Width - 8.9"  
2
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INSTALLATION  
Tools/Parts needed for Installation (not supplied)  
Small flat blade screwdriver  
Phillips Screwdriver (#2 or medium sized)  
Wire cutters  
Wire strippers  
4 - #6 round head screws, and 1 - #8 sheet metal screw  
(or nut, bolt, and star washer)  
2 - Ring connectors (large enough to accommodate your method of grounding)  
In-line fuse or circuit breaker - see fuse chart below  
Power and ground wire - see Power Wire Calculator on page 4  
Speaker wire - 16 gauge or larger  
Grommets (sized to work with the power wire you plan to use  
in your installation)  
Tube of silicone sealant  
Fuse requirements  
Amplifier  
PC4200  
PC4400  
PC4800  
PC6600  
Maximum Fuse Rating  
40 Amp  
60 Amp  
80 Amp  
80 Amp  
You will need to install an in-line fuse or circuit breaker in the power  
wire within 18" of the battery.This fuse or circuit breaker is to protect  
your vehicle from fire in case the power wire shorts to the vehicle  
body. If you are only using one amplifier, use the fuse rating indicated  
in this chart. If you are using more than one amplifier, add up the fuse  
ratings for all the amplifiers. This sum is the rating for your main fuse or  
circuit breaker.Use a power distribution block or fuse near your amplifiers  
with the appropriate fuse for each individual power wire.  
3
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WIRING  
The following is a basic formula to be used as a guide to determine current  
draw. A 50% amplifier efficiency rating is used as an average. Your new  
POWERCLASS amplifier is more efficient, other amplifiers will probably  
be less. This formula is to be used as a guideline. Using wire of a larger  
gauge can only improve the current transfer of your system. Do not use  
smaller gauge wire.  
Total RMS output x 2 = Total Input Wattage  
Total Input Wattage  
= Current Draw (in Amps)  
Supply Voltage  
Example: A POWERCLASS 4400 amplifier has four channels at 50 watts  
RMS per channel into 4 Ohms (50 x 4 = 200).You would use the  
formula in the following way:  
200W x 2 = 400W  
400W  
12V  
= 33.3A Total current draw.  
If the same amplifier is driven into a 2 Ohm stereo or 4 Ohm mono load,  
double it's 4 Ohm RMS rating.All POWERCLASS amplifiers will effectively  
double their power at this load.  
100W x 4 x 2 = 800W  
800W  
12V  
= 66.6A Total current draw.  
If you are using more than one amplifier, add up the total current draw  
for all of them and choose the appropriate gauge based on the grand total.  
Power Wire Calculator  
Recommended MINIMUM Gauge  
Total Current Draw  
Length Of Wire To Be Run  
( in Amps)  
Up to 4ft. 4 to 7ft. 7 to 10ft. 10 to 13ft. 13 to 16ft. 16 to 19ft. 19 to 22ft. 22 to 28ft.  
0-20  
20-35  
35-50  
50-65  
65-85  
85-105  
105-125  
125-150  
14  
12  
10  
8
6
6
12  
10  
8
8
6
6
4
2
12  
8
8
6
4
4
4
2
10  
8
6
4
4
2
2
2
10  
6
6
4
2
2
2
0
8
6
4
4
2
2
0
0
8
6
4
4
2
2
0
0
8
4
4
2
0
0
0
00  
4
2
(
NOTE: The ground wire should be the same gauge as the power wire.  
4
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WIRING  
Before beginning, disconnect the negative (-) terminal of the  
battery prior to working on the positive (+) terminal to prevent  
a short to ground. This is important, unless you want to spend  
the rest of your life with a nickname like "Sparky," or "Smokey."  
Reconnect the negative terminal only after all connections have  
been made.  
Factory Ground wire may  
need to be replaced if it is  
frayed or broken.  
Positive  
Battery  
Terminal  
Fuse must be  
installed within  
18" of battery  
Run signal cables (RCAs)  
and remote turn-on lead  
down the opposite side of  
the vehicle of the power  
wire to avoid radiated noise.  
Drill a hole in the firewall  
and use a rubber grommet  
to keep wire from shorting.  
eject  
1
5
2
6
3
7
4
8
Trk  
1
DP  
B
A
S
S
TREBLE  
B
A
L
A
N
C
E
T
R
A
C
K
P
P
I
M
A
R
K
E
T
I
N
G
T
VOLUME  
L
E
F
T
R
I
G
H
T
F
O
W
A
R
D
REVERSE  
Run the cables under the  
carpet near the side of the  
vehicle. Be careful not to  
drill or screw into the wires  
when you replace the trim.  
Avoid sharp edges that  
could chafe through the  
insulation.  
For systems over 300 watts,  
add a ground cable from the  
amp to the battery  
(see page 6).  
Firmly attach Amp  
Ground Wire to solid  
metal (see page 6).  
Warning!  
Fuse must be installed within 18" of battery  
5
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POWER / GROUND  
Grounding  
Locate an area near the amplifier(s) that is metal and clean an area  
about the size of a quarter to bare metal. Inspect the area around  
and underneath to be sure you won't drill into wires, brake or fuel lines.  
Drill a pilot hole in the middle of this area. Terminate the ground wire  
with a ring connector and attach it to the bare metal using a #8 sheet  
metal screw and washer or preferably, a bolt, nut and a star washer  
(not supplied). We suggest crimping and soldering this connection.  
After the connection is complete, coat the area (on both sides) with  
silicone or some similar material to prevent rust from developing on  
the bare metal.  
If your grand total current draw is over 50 amps (or total output  
power is over 300 watts), you should run a ground wire beside  
your power wire from the battery to the amplifier(s) in addition  
to your regular ground wire. Keep the ground and power wires  
as close together as possible, and use the same gauge wire for both.  
This will ensure that you have a good ground path, and may eliminate  
such potential problems as engine noise and overheated amplifiers.  
Charging System Considerations  
If your grand total current draw is over 100 amps (or total output  
power is over 600 watts), you are probably exceeding the capability  
of your charging system. Dimming lights and fluctuating voltage are  
solid indicators that you need to upgrade your alternator, battery  
(or go to multiple batteries), or both.  
Keep in mind that your amplifiers simply convert electrical energy  
to acoustical energy, and any electrical deficiency will compromise  
the performance of your sound system.  
For more information about charging system upgrades, see your  
local authorized PrecisionPower Dealer or call the PrecisionPower  
technical support office at 1-800-62POWER.  
6
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POWER / GROUND and REMOTE  
Once you have run both the power and ground wires, it's time  
to connect the cables to the amplifier. Cut off excess wire and,  
using wire strippers, strip the ends of the power and ground  
cables approximately 1/4 inch. Locate the PowerLock power  
and ground connector (supplied). With a small flat bladed screw  
driver, loosen the screws before attempting to insert the cables.  
Insert the wires into the appropriate hole, and tighten the  
screws. Once the wires are secure, the PowerLock may be  
plugged into the amplifier. The Power/Ground PowerLock will  
accommodate 6 gauge wire for the PC4200 / PC4400, and 4 gauge  
wire for the PC4800 and PC6600.  
Power/Ground PowerLock  
Fastening screws  
Power wires  
Connect to Amplifier  
Remote turn-on  
Your head unit should have a lead marked 'remote' or 'power  
antenna' which will be used to turn on your amplifier. Extend  
this lead through your vehicle along with your RCA signal wires.  
Strip 1/4 inch of insulation off the wire and insert the end into  
the center terminal of the 5-pin speaker/remote PowerLock.  
7
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SPEAKER WIRING  
Using 16 gauge or larger, run the speaker wires from the  
amplifier location through the vehicle to the speakers. Observe  
the same precautions for routing these wires that you followed  
for running the power and remote turn-on wires. Cut off excess  
and, using wire strippers, strip 1/4 inch of insulation. Locate  
the speaker/remote turn-on PowerLock connector. Loosen the  
four outer screws on the underside of the connector and insert  
the front (PC4200, PC4400 and PC4800) or sub (PC6600)  
speaker leads into the end. Check to be sure you've maintained  
proper polarity before securing each wire.  
Speaker PowerLock Connector  
Right Speaker negative  
Right Speaker positive  
Remote turn on  
Left Speaker positive  
Left Speaker negative  
Speaker PowerLock Connector  
Right Speaker negative  
Right Speaker positive  
Left Speaker positive  
Left Speaker negative  
Speaker/Remote PowerLock  
For the rear channels, locate the four terminal speaker  
PowerLock connector. (For PC650, the front channel also uses  
a four terminal PowerLock connector.) On 4 and 6 channel  
PowerClass Amplifiers, all speaker PowerLocks plug into the  
amplifier with the screws facing up. Loosen the screws on the  
top of the blocks and insert the stripped ends of the speaker  
wires into the end. Double check polarity, secure each wire by  
tightening the screws, and plug the PowerLock connector into  
the amplifier with the screws on top.  
8
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BRIDGING  
Bridging  
Any or all pairs of channels (front, rear or sub) on your POWERCLASS  
multi channel amplifier are capable of being bridged into a 4 ohm mono  
output without switches or bridging modules. This feature permits  
the creation of a mono channel for a subwoofer or center channel.  
Deriving the mono channel is accomplished by using the left channel  
positive wire of the pair as the positive speaker wire and the right  
channel negative wire as the negative speaker wire.You should always  
be working with the wires of a single PowerLock speaker connector  
when bridging a pair of channels.  
NOTE: It is important that a minimum 4 ohm impedance is observed.  
If the impedance drops significantly below 4 ohms while the amplifier  
is wired in the bridged configuration, the amplifier's protection circuitry  
may engage.  
Mixed Mono Output  
The ability to run stereo speakers while simultaneously running  
a mono output from the same channel pair is accomplished by  
running the stereo speakers normally and tapping into the appropriate  
wires for the "mixed mono" channel (left channel positive for the  
positive speaker wire and right channel negative for the negative  
speaker wire). Total speaker impedance should be no lower than  
2 ohms on the stereo channels and 4 ohms on the mono channel.  
NOTE: Passive crossovers must be used for "mixed mono"  
operation. Choose a low pass crossover around 100Hz for your  
subwoofer, then choose a high pass crossover for your stereo  
channels. The high pass crossover must be at the same or slightly  
higher frequency than the low pass crossover to maintain the  
correct impedance. See your PrecisionPower dealer or call  
1-800-62POWER for more information about passive crossovers.  
9
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ENDPLATE DIAGRAMS  
POWER / GROUND / QBASS™  
PC4200  
PC4400  
POWER  
Designed and Handcrafted in the U.S.A.  
+
-
2
1
4
POWER / MUTE  
Designed and Handcrafted in the U.S.A.  
+
-
2
1
3
PC4800  
POWER / MUTE  
Designed and Handcrafted in the U.S.A.  
QBASS  
0
+18  
QBASS  
+
-
REMOTE  
5
2
6
7
1
3
PC6600  
POWER / MUTE  
Designed and Handcrafted in the U.S.A.  
QBASS  
0
+18  
QBASS  
+
-
REMOTE  
5
1
2
3
6
1. POWER / GROUND PowerLock  
After you have securely connected your power and ground wires, plug in the  
Power / Ground PowerLock connector here.  
2. COOLING VENTS (see page 18).  
3. POWER / MUTE indicator  
A green light indicates that the amplifier is on, a red light indicates that the amplifiers  
muting circuits are engaged.  
4. POWER indicator  
A green light indicates that the ampilfier is on.  
5. QBASSLevel  
Turn this control clockwise to boost the QBASS PLUScircuit by up to 18dB.  
6. QBASS REMOTE™ plug in  
Plug in the data cable from the optional QBASS REMOTEdash mount level control here.  
(This will bypass the amplifier's on board QBASScontrol)  
7. FORCED AIR INTAKE VENTS (see page 18 and 19).  
10  
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ENDPLATE DIAGRAM  
4200 / 4400  
1. REAR HP/LP switch  
This switch is used to select whether the amplifier will provide a high  
pass (switch in) or low pass (switch out) signal to the rear speakers. (see page 16).  
2. REAR GAIN  
Use this control to match the output level of the head unit to the rear channel of  
the amplifier (see page 18).  
3. QBASSControl  
Rotate clockwise to boost up to 12dB at 40Hz (see page 15).  
4. FRONT GAIN  
Use this control to match the output level of the head unit to the front channel of  
the amplifier (see page 18).  
5. COOLING VENTS (see page 18).  
6. SPEAKER/REMOTE CONNECTOR  
After connecting remote and speaker wires, plug in the PowerLock  
connectors here (see pages 7-9).  
3
1
2
4
5
6
REAR  
L - L + R + R -  
FRONT  
L - L + R E M R + R -  
REAR REAR  
HP/LP GAIN QBASS  
FRONT  
GAIN  
REAR INPUTS  
L
R
FRONT INPUTS L / R  
OUTPUTS L / R  
COMBINE  
-12dB  
REAR XOVER FREQ.  
FRONT HP FREQ.  
8
12  
13  
10 11  
7
9
7. REAR XOVER FREQ.  
Use this control to adjust the rear crossover frequency from 20Hz to 5kHz (see page 16).  
8. REAR INPUTS  
Plug in the rear RCA leads from your head unit here (see page 14).  
9. -12dB  
For use with high level inputs (4V up to 12V). Push this switch  
in to attenuate the input by 12dB (see page 14).  
10. COMBINE  
Push this switch in to connect the rear channels to the front inputs (see page 18).  
11. FRONT XOVER FREQ.  
Use this control to adjust the front crossover frequency from 20Hz to 5kHz (see page 16).  
12. FRONT INPUTS  
Plug in the front RCA leads from your head unit here (see page 14).  
13. L/R OUTPUTS  
Left and Right RCA outputs provide summed mono low pass signal to another amplifier.  
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ENDPLATE DIAGRAM  
4800  
1. REAR LP FREQ.  
Use this control to adjust the rear low pass crossover frequency from 44Hz to 315Hz  
(see page 16).  
2. REAR GAIN  
Use this control to match the output level of the head unit to the rear channel of  
the amplifier (see page 18).  
3. FRONT GAIN  
Use this control to match the output level of the head unit to the front channel of  
the amplifier (see page 18).  
4. QBASS 1  
Use this switch with the QBASS 2 to program the QBASS PLUScircuit. (see page 15).  
5. QBASS 2  
Use this switch with the QBASS 1 to program the QBASS PLUScircuit. (see page 15).  
6. Q SELECT 4/2  
Push this button in for a Q setting of 4 and out for a setting of 2.  
7. FORCED AIR EXHAUST VENTS (see page 18 and 19).  
8. SPEAKER/REMOTE CONNECTOR  
After connecting remote and speaker wires, plug in the PowerLock  
connectors here (see pages 7-9).  
3
4
5
6
2
1
7
8
REAR  
L - L + R + R -  
FRONT  
L - L + R E M R + R -  
REAR FRONT QBASS Q SELECT  
GAIN GAIN 4/2  
1
2
REAR LP FREQ.  
REAR INPUTS  
L
R
REAR HP/LP  
-12dB  
COMBINE  
FRONT INPUT L / R  
OUTPUT L / R  
REAR HP FREQ.  
FRONT HP FREQ.  
11  
15  
13 14  
16  
9
10  
12  
17  
9. REAR HP/LP switch  
This switch is used to select whether the amplifier will provide a high  
pass (switch IN) or mono low pass (switch OUT) signal to the rear speakers. (see page 16).  
10. REAR HP FREQ.  
Use this to adjust the rear high pass crossover frequency from 20Hz to 5kHz (see page 16).  
11. REAR INPUTS  
Plug in the rear RCA leads from your head unit here (see page 14).  
12. -12dB  
For use with high level inputs (4V up to 12V). Push this switch  
in to attenuate the input by 12dB (see page 14).  
13. COMBINE  
Push this switch in to connect the rear channels to the front inputs (see page 18).  
14. FRONT HP FREQ.  
Use this to adjust the rear high pass crossover frequency from 20Hz to 5kHz (see page 16).  
15. FRONT INPUTS  
Plug in the front RCA leads from your head unit here (see page 14).  
16. OUTPUTS  
Left and Right RCA outputs provide high pass or mono low pass signal to another amplifier.  
17. FORCED AIR INTAKE VENTS (see page 18 and 19).  
12  
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ENDPLATE DIAGRAM  
6600  
1. FRONT GAIN  
Use this control to match the output level of the head unit to the front channel of  
the amplifier (see page 18).  
2. REAR GAIN  
Use this control to match the output level of the head unit to the rear channel of  
the amplifier (see page 18).  
3. SUB GAIN  
Use this control to match the output level of the head unit to the sub channel of  
the amplifier (see page 18).  
4. COOLING VENTS (see page 18).  
5. SPEAKER/REMOTE CONNECTOR  
After connecting remote and speaker wires, plug in the PowerLock  
connectors here with the screws facing up (see pages 7-9).  
2
1
3
4
5
FRONT  
L - L + R + R -  
REAR  
L - L + R + R -  
SUB WOOFER  
L - L + R E M R + R -  
FRONT REAR SUB  
GAIN GAIN GAIN  
FRONT INPUTS  
L / R  
Q SELECT 4/2  
1
XOVER FREQ.  
FRONT REAR  
2
COMBINE  
REAR INPUTS  
L / R  
QBASS  
-12dB  
9
10 11 12  
6
7
8
13  
14  
6. COMBINE  
Push this switch in to connect the rear channels to the front inputs (see page 18).  
7. Q SELECT 4/2  
Push this button in for a Q setting of 4 and out for a setting of 2 (see page 15).  
8. QBASS 1  
Use this switch with the QBASS 2 to program the QBASS PLUScircuit. (see page 15).  
9. QBASS 2  
Use this switch with the QBASS 1 to program the QBASS PLUScircuit. (see page 15).  
10. FRONT XOVER FREQ.  
Use this control to adjust the front crossover frequency from 20Hz to 5kHz (see page 16).  
11. REAR XOVER FREQ.  
Use this control to adjust the rear crossover frequency from 20Hz to 5kHz (see page 16).  
12. -12dB  
For use with high level inputs (4V up to 12V). Push this switch  
in to attenuate the input by 12dB (see page 14).  
13. FRONT INPUTS  
Plug in the front RCA leads from your head unit here (see page 14).  
14. REAR INPUTS  
Plug in the rear RCA leads from your head unit here (see page 14).  
13  
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INPUTS  
There are two sets of RCA INPUTS on the front end of your amplifier.  
Plug the RCA cables from your head unit into the appropriate set of  
inputs, front and rear. If your head unit doesn't have RCA outputs  
don't worry. Simply add a set of RCA plugs (available at your dealer)  
to your front or rear set of speaker leads (see drawing below), plug  
them into the input jacks, and push in the -12dB switch.  
SOURCE Headunit  
eject  
1
5
2
6
3
7
4
8
Trk 1  
BASS  
TREBLE  
PPI MAR KET ING DPT  
BALANCE  
TRACK  
VOLUME  
LEFT  
RIGHT  
FOWARD  
REVERSE  
(+) Positive  
LEFT input  
(-) Negative  
(+) Positive  
RIGHT input  
(-) Negative  
WARNING: If you are using a source unit with bridged high powered (or  
"floating ground") speaker outputs, a suitable high to low level adapter  
must be used. If you are unsure about your head unit see your local  
PrecisionPower dealer or call 1-800-62Power.  
Balanced Differential Inputs  
This circuitry reduces noise radiated into your signal cables by up to  
40dB. This is equivalent to a noise reduction of approximately one  
hundred times what the noise level would be without this circuitry.  
It provides all the benefits of a true 'balanced' line without the need  
of any special cables (see diagram below). This type of input works  
with any conventional RCA cable.  
music  
noise  
(+)  
( )  
(
+
=)  
signal and ground  
music noise  
music  
and noise  
music  
noise  
noise  
(+)  
( )  
(
-
= 0 )  
noise cancels  
music  
NO noise  
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QBASSand QBASS REMOTE™  
QBASS™  
For extra BOOM from your system, we've developed the  
QBASSbass control circuit. The QBASS control is located  
to the left of the speaker outputs, and allows you to add up to  
12dB of boost centered at 40Hz by rotating the control clockwise.  
QBASS  
QBASS™  
Is a standard feature on the PC4200/PC4400.  
QBASSPLUS™  
On PC4800 and PC6600 amplifiers, we've taken bass control  
to a higher level with QBASS PLUS. The two QBASS switches  
(labeled 1 and 2) on the front end of the amplifier allow you  
to select one of four frequency centers - 30Hz, 36Hz, 44Hz  
and 60Hz. The Q SELECT switch determines the width of  
boosted frequencies. A 'Q' of 2 (switch out) will give you a  
wide boost while a 'Q' of 4 will boost a narrow range of  
frequencies. (See chart below.) On the rear end panel you  
will find the QBASS PLUSlevel control and the plug-in  
for an optional QBASS REMOTElevel control. Adjust the  
level control clockwise for up to 18dB of boost at your  
selected frequency and Q.  
QBASS PLUS™  
Q = 2  
QBASS PLUSSettings  
Q = 4  
1
IN  
IN  
OUT  
OUT  
2
IN  
OUT  
IN  
Freq.  
30Hz  
36Hz  
44Hz  
60Hz  
+18dB  
+12dB  
+6dB  
0dB  
OUT  
36Hz  
44Hz  
30Hz  
60Hz  
CAUTION: QBASSand QBASS PLUSshould only be used in  
systems with strong subwoofers. 18dB is a lot of bass boost and  
could damage full range speakers.  
15  
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CROSSOVER Operation  
Your new POWERCLASS amplifier has crossover circuits built-in to provide  
exceptional system flexibility without the added expense and installation of an  
outboard crossover. See the frequency detent charts on page 17 to set your  
amplifier's crossover.  
PC4200 / PC4400  
The front crossover is high pass and can be adjusted from 20Hz to 5kHz by  
turning the FRONT HP FREQ.control.If you need full-range, turn the control  
fully counterclockwise to the 20Hz position.The rear crossover can be high  
pass or low pass, chosen by the REAR HP/LP switch. The REAR XOVER  
FREQ. control determines the rear crossover frequency between 20Hz and  
5kHz, 20Hz being fully counterclockwise.The RCA outputs are always mono  
low pass at 90Hz to send a subwoofer signal to another amplifier.  
PC4800  
The front crossover is high pass and can be adjusted from 20Hz to 5kHz by  
turning the FRONT HP FREQ.control.If you need full-range, turn the control  
fully counterclockwise to the 20Hz position. The rear crossover actually  
consists of two crossovers, one high pass and one mono low pass. The  
high pass section is a 12dB/octave Linkwitz-Riley type that is adjustable  
from 20Hz to 5kHz using the REAR HP FREQ. control. For full range  
operation, turn the control fully counterclockwise to the 20Hz position. The  
low pass section is a 24dB/octave Linkwitz-Riley type that you can adjust  
from 44Hz to 315Hz with the REAR LP FREQ. control. High pass or low  
pass to the rear channel is determined by the REAR HP/LP switch, 'OUT'  
being low pass and 'IN' being high pass. When you select high pass, the  
RCA outputs will be low pass and vice versa.  
PC6600  
The front and rear crossovers are both high pass, and can be adjusted from  
20Hz to 5kHz using the XOVER FREQ. FRONT and REAR controls.For full  
range operation, turn the control fully counterclockwise to the 20Hz position.  
The subwoofer crossover is a 24dB/octave Linkwitz-Riley type fixed at 90Hz.  
See system diagrams starting on page 21 for examples!  
16  
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FREQUENCY DETENT CHARTS  
PC4200 / PC4400 / PC4800 / PC6600  
The crossover frequency range of your new POWERCLASS amplifier goes from  
20Hz - 5kHz, and the controls are detented for accurate tuning. Each "click" counted  
from the full counterclockwise position corresponds to a specific frequency.Refer to  
this chart for set-up instructions.  
PC4200/PC4400 - Front HP & Rear Xover Freq.  
PC4800 - Front and Rear HP Freq.  
DETENT PC6600 - Front and Rear Xover Freq.  
DETENT  
1
20 Hz  
1
44 Hz  
2
21 Hz  
2
44 Hz  
3
21 Hz  
21.5 Hz  
22 Hz  
23 Hz  
24.5 Hz  
26 Hz  
3
44 Hz  
4
4
45 Hz  
5
5
46 Hz  
6
6
48 Hz  
7
7
51 Hz  
8
8
54 Hz  
9
27.5 Hz  
30 Hz  
9
58 Hz  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
62 Hz  
32 Hz  
67 Hz  
35 Hz  
72 Hz  
39 Hz  
78 Hz  
43 Hz  
85 Hz  
49 Hz  
94 Hz  
56 Hz  
104 Hz  
115 Hz  
124 Hz  
132 Hz  
141 Hz  
150 Hz  
162 Hz  
175 Hz  
189 Hz  
207 Hz  
227 Hz  
240 Hz  
249 Hz  
258 Hz  
268 Hz  
280 Hz  
287 Hz  
290 Hz  
295 Hz  
298 Hz  
303 Hz  
307 Hz  
311 Hz  
315 Hz  
315 Hz  
315 Hz  
64 Hz  
73 Hz  
80 Hz  
88 Hz  
100 Hz  
114 Hz  
134 Hz  
160 Hz  
196 Hz  
260 Hz  
320 Hz  
368 Hz  
432 Hz  
496 Hz  
608 Hz  
752 Hz  
864 Hz  
1008 Hz  
1200 Hz  
1488 Hz  
1952 Hz  
2816 Hz  
4512 Hz  
4944 Hz  
5000 Hz  
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INPUT COMBINE and GAIN  
Input Combine  
Your multi channel POWERCLASS amplifier can use both front  
and rear outputs from your head unit to maintain the ability to fade  
front to rear, or you can run a single set of RCAs to the front inputs  
and push in the COMBINE switch on the amplifier end plate to route  
the front signal to the rear channels as well.  
Adjusting The Amplifier Input Gain  
1. Adjust all amplifier input gain controls to just above minimum  
sensitivity (fully counterclockwise).  
2. Using the cleanest source (CD), with music playing turn up  
the head unit until you can hear distortion. Now turn it down a  
bit until you cannot hear the distortion.  
3. Increase the Amplifier gain (clockwise) until the onset of  
audible distortion. Then decrease the gain to the point just  
before the distortion starts. This setting minimizes background  
noise and prevents overload.  
4. Repeat step 3 for any remaining amplifiers in the system.  
Heatsink Cooling  
The unique heatsink on your POWERCLASS amplifier has  
been designed with fins on the inside of the aluminum mass.  
This allows for the transfer of heat from the circuitry to the  
heatsink fins and out through the vents in the endplates. Be  
sure you have ample space around the amplifier for cooling,  
at least 2" on all sides.  
18  
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FORCED AIR THERMAL MANAGEMENT  
To manage the additional heat associated with higher output capability,  
a thermally controlled fan has been designed into the PC4800.  
When the heatsink temperature reaches a predetermined  
value, the fan is activated. Cool air is drawn in through  
the lower intake vents on the endplate. This cool air  
flows below the circuit board, through the fan and  
across the internal fins, cooling the heatsink.  
The heated air is then forced out through  
the upper endplate exhaust vents.  
Cool Air Intake  
Warm Air Exhaust  
19  
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TROUBLE SHOOTING  
NO SOUND  
Is the LED lit?  
YES  
RED  
NO  
Check Power and Remote turn-on wire  
for voltage. Make sure Ground wire is  
secure.  
WHAT COLOR ?  
GREEN  
Substitute RCA inputs with another  
source, and connect a known good  
speaker to one channel.  
Central Muting is engaged. Remote  
turn-on wire must have more than 8  
volts to release central muting. Check  
Remote turn-on at the head unit.You  
may need to install a relay if the head  
unit doesn't put out sufficient voltage.  
STILL NO SOUND - See your Authorized PrecisionPower Dealer or Call  
1-800-62Power  
SOUND IN ONE CHANNEL ONLY  
Reverse left and right speakers by unplugging the speaker connector, turning it  
over and plugging it back in.  
SOUND IS NOW IN  
OPPOSITE CHANNEL  
Reverse RCA inputs  
SAME CHANNEL  
Problem is in the speaker or speaker  
wire of the silent channel.  
SOUND IS NOW IN  
SAME CHANNEL  
OPPOSITE CHANNEL  
Problem is in the Amplifier. See your  
local Authorized PrecisionPower Dealer  
or call 1-800-62POWER.  
Reverse RCAs at head unit  
SOUND IS NOW IN  
OPPOSITE CHANNEL  
Problem is in the head unit  
SAME CHANNEL  
Problem is in the RCA cables  
AMPLIFIER SHUTS OFF  
Short Circuit Protection engaged:  
The amplifier will turn off and try to come back on immediately. The  
amplifier will cycle like this indefinitely, with "blips" of sound each  
time. If this is the case, check your speakers and wiring for low  
impedance and short circuits.  
Thermal Protection engaged:  
The amplifier will turn off and several minutes later will come back  
on. In this case, ensure that there is nothing blocking the normal  
convective airflow of the amplifier. No obstruction should be within  
2" of the amplifier on all sides.  
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SYSTEM DIAGRAM  
ONE / TWO  
Passive  
Crossover  
Passive  
Crossover  
Source Unit  
Tweeter  
Tweeter  
eject  
1
2
3
4
5
6
7
8
Trk  
1
BASS  
TREBLE  
BALANCE  
TRACK  
P
P
I
M
A
R
K
E
T
I
N
G
D
P
T
VOLUME  
LEFT  
RIGHT  
FOWARD  
REVERSE  
MidRange  
MidRange  
In  
p
u
S
t
e
n
si  
ti  
vi  
ty  
R
In  
L
p
u
t
R
O
ut  
L
pu  
t
P
re  
c
is  
io  
P
ow  
P
E
n
er  
P
o
Q
w
e
V
-1  
o
lu  
r
1
4
m
e
Po  
w
er  
+
M
ad  
PE  
e
Q
in  
-1  
+
U
S
14  
A
b  
+
o  
w
+
id  
le  
PEQ-114  
Preamp/Equalizer  
Sub  
Sub  
POWERCLASS Amplifier  
PC4200, PC4400 or PC4800  
Front High Pass 100Hz  
Rear Low Pass 100Hz  
Passive  
Crossover  
Passive  
Crossover  
Source Unit  
Tweeter  
Tweeter  
eject  
1
2
3
4
5
6
7
8
Trk  
1
BASS  
TREBLE  
BALANCE  
TRACK  
P
P
I
M
A
R
K
E
T
I
N
G
D
P
T
VOLUME  
LEFT  
RIGHT  
FOWARD  
REVERSE  
MidRange  
MidRange  
R
In  
pu  
t
L
In  
R
pu  
Re  
ar  
ut  
pu  
t
O
S
en  
si  
ti  
vi  
ty  
t
L
R
Fr  
Ou ont  
tp  
ut  
L
LE  
D
S
el  
ec  
t
1
P
ow  
er  
2
Fr  
eq  
3
ue  
nc  
4
y
A
P
d
ju  
re  
c
st  
is  
io  
P
A
Su  
b
V
n
o
lu  
P
ow  
R
-
m
e
2
4
e
r
Lo  
w
5
Po  
L
ow  
w
e
-M  
id  
F
In  
H
igh  
-M  
id  
R
i
Tr  
eb  
le  
+
M
ad  
e
in  
r  
+
D
U
S
ef  
ea  
A
t
+
S
ub  
+
w
+
M  
id  
M
id  
l
e
P
A
R
-2  
45  
PAR-245  
Preamp/Equalizer  
Passive  
Crossover  
Passive  
Crossover  
Tweeter  
Tweeter  
MidRange  
MidRange  
POWERCLASS Amplifier  
PC4200, PC4400 or PC4800  
Front High Pass 20Hz  
Rear High Pass 20Hz  
Mixed Mono Sub  
Passive  
Crossover  
Sub  
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SYSTEM DIAGRAM  
THREE  
Source Unit  
eject  
1
2
3
4
5
6
7
8
Trk  
1
BASS  
TREBLE  
BALANCE  
TRACK  
P
P
I
M
A
R
K
E
T
I
N
G
D
P
T
VOLUME  
LEFT  
RIGHT  
FOWARD  
REVERSE  
R
In  
pu  
t
L
In  
R
pu  
Re  
ar  
ut  
pu  
t
O
S
en  
si  
ti  
t
L
vi  
ty  
R
Fr  
Ou ont  
tp  
ut  
L
LE  
D
S
el  
ec  
t
1
P
ow  
er  
2
Fr  
eq  
3
ue  
nc  
4
y
P
A
d
ju  
re  
c
st  
is  
io  
P
A
Su  
b
V
n
o
P
ow  
lu  
R
-
m
e
2
4
e
r
Lo  
w
5
Po  
w
Low  
e
-M  
id  
F
In  
H
igh  
-M  
id  
R
li
Tr  
eb  
le  
+
M
ad  
e
in  
er  
+
D
U
S
ef  
ea  
A
t
+
ub  
+
+
-M  
id  
i
id  
eb  
l
e
P
A
R
-2  
45  
PAR-245  
Preamp/Equalizer  
Passive  
Passive  
Tweeter  
Tweeter  
Crossover  
Crossover  
MidRange  
MidRange  
Front  
Rear  
Passive  
Crossover  
Passive  
Crossover  
Tweeter  
Tweeter  
MidRange  
MidRange  
POWERCLASS Amplifier  
PC4200, PC4400 or PC4800  
Front High Pass 88Hz  
Rear High Pass 88Hz  
Low Pass RCA Outputs  
(for constant sub)  
Sub  
Sub  
POWERCLASS Amplifier  
One or Two Channel Amplifier  
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SYSTEM DIAGRAM  
FOUR  
Source Unit  
eject  
1
2
3
4
5
6
7
8
Trk  
1
BASS  
TREBLE  
BALANCE  
TRACK  
P
P
I
M
A
R
K
E
T
I
N
G
D
P
T
VOLUME  
LEFT  
RIGHT  
FOWARD  
REVERSE  
R
In  
pu  
t
L
R
In  
p
u
R
ut  
pu  
t
O
ea  
t
r
S
e
n
si  
L
ti  
vi  
ty  
R
Fr  
ont  
pu  
O
ut  
t
L
L
E
D
S
e
le  
c
t
1
P
o
w
e
r
2
Fr  
e
q
3
ue  
n
c
4
y
P
A
d
ju  
re  
st  
c
is  
io  
P
A
Su  
b
V
n
P
o
o
lu  
R
-
m
e
2
w
e
4
Lo  
w
5
r
P
ow  
Lo  
w-M  
er  
F
id  
In  
H
-C  
R
igh  
-M  
id  
l
Tr  
eb  
le  
+
M
a
d
e
e
r
+
D
i
n
e
fe  
U
S
a
t
A
+
b
+
w
+
M  
Passive  
Crossover  
id  
Passive  
Crossover  
i
M  
id  
Tweeter  
Tweeter  
e  
b
P
A
le  
R
-2  
45  
PAR-245  
Preamp/Equalizer  
MidRange  
MidRange  
Passive  
Crossover  
Passive  
Crossover  
Tweeter  
Tweeter  
MidRange  
MidRange  
POWERCLASS Amplifier  
PC4800  
Front High Pass 320Hz  
Rear High Pass 320Hz  
RCA Output Low Pass 315Hz  
MidBass  
MidBass  
Sub  
Sub  
POWERCLASS Amplifier  
PC4800  
Front High Pass 100Hz  
Rear Low Pass 100Hz  
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SYSTEM DIAGRAM  
FIVE  
Source Unit  
eject  
1
2
3
4
5
6
7
8
Trk  
1
BASS  
TREBLE  
BALANCE  
TRACK  
P
P
I
M
A
R
K
E
T
I
N
G
D
P
T
VOLUME  
LEFT  
RIGHT  
FOWARD  
REVERSE  
R
In  
pu  
t
L
In  
R
pu  
Re  
ar  
ut  
pu  
t
O
S
en  
si  
ti  
vi  
ty  
t
L
R
Fr  
Ou ont  
tp  
ut  
L
LE  
D
S
el  
ec  
t
1
P
ow  
er  
2
Fr  
eq  
3
ue  
nc  
4
y
A
P
d
ju  
re  
c
st  
is  
io  
P
A
Su  
b
V
n
o
lu  
P
ow  
R
-
m
e
2
4
e
r
Lo  
w
5
Po  
L
ow  
w
er  
-M  
id  
F
In  
H
igh  
-M  
id  
-C  
R
i
Tr  
eb  
le  
+
M
ad  
e
in  
r  
+
U
S
ef  
ea  
A
t
+
S
ub  
+
+
M  
id  
M
id  
l
e
P
A
R
-2  
45  
PAR-245  
Preamp/Equalizer  
SA  
U
n
H
z
M
8
K
r
1
2
.
ze  
ali  
qu  
e
E
tav  
+
1
2
db  
Oc  
K
H
z
ird  
6
.
4
K
H
z
T
h
-
1
2
1
6
H
z
+
1
2
db  
+
1
2
db  
3
.
2
K
b
z
-
1
2
8
K
H
b
-
2
z
b
2
0
K
H
d
+
1
2
2
d
b
K
H
z
+
1
2
db  
1
.
6
d
b
+
1
-
1
2
K
H
z
4
-
2
b  
z
1
2
db  
K
H
-
1
2
b  
+
1
0
0
H
z
+
1
2
db  
8
0
1
2
db  
-
2
H
z
+
2
K
-
1
2
db  
db  
+
1
2
K
H
z
1
d
0
H
z
5
4
0
b
+
1
2
db  
-
1
2
z
+
1
2
db  
H
db  
1
K
-
1
2
d
+
1
2
z
H
d
H
z
b
K
1
2
0
0
b
+
1
2
d
2
.
5
-
1
2
d
H
z
+
1
2
db  
db  
0
0
5
d
+
1
2
H
z
K
H
z
1
0
0
1
2
d
b
.
2
7
-
1
2
b  
2
+
1
z
2
db  
1
2
db  
2
5
0
H
d
+
1
+
H
z
5
0
db  
H
z
2
db  
-
1
2
db  
+
1
2
6
3
5
-
1
d
b
H
z
1
2
db  
+
1
2
1
2
6
d
b
+
e
r
H
z
-
1
2
2
5
ow  
-
1
2
d
d
b
H
z
2
db  
n
P
+
1
2
3
2
0
-
1
i
is  
2
db  
1
H
z
b
2
db  
r
P
ec  
30  
+
6
3
2
d
+
1
-2  
-
1
Q
E
2
D
1
2
db  
H
z
2
b  
+
5
6
1
-
1
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r
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H
P
ow  
3
1
.
5
+
1
2
db  
1
+
1
2
db  
H
z
-
2
b  
8
0
d
1
2
db  
1
+
0
H
z
1
4
+
1
2
db  
EQ  
-
1
2
db  
at  
fe  
De  
In  
p
u
t
st  
e
re  
o
o
u
m
t
o
n
o
O
u
in  
L
t
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R
d
n
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te  
o
o
r
G
m
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R
w
L
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P
R
DEQ-230 third octave EQ  
Passive  
Crossover  
Passive  
Crossover  
Tweeter  
Tweeter  
MidRange  
Tweeter  
MidRange  
Tweeter  
Passive  
Crossover  
Passive  
Crossover  
MidRange  
MidRange  
Sub  
Sub  
POWERCLASS Amplifier  
PC6600  
Front High Pass 88Hz  
Rear High Pass 88Hz  
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SYSTEM DIAGRAM  
SIX  
Source Unit  
eject  
1
2
3
4
5
6
7
8
Trk  
1
BASS  
TREBLE  
BALANCE  
TRACK  
P
P
I
M
A
R
K
E
T
I
N
G
D
P
T
VOLUME  
LEFT  
RIGHT  
FOWARD  
REVERSE  
R
In  
pu  
t
L
In  
R
pu  
Re  
ar  
ut  
pu  
t
O
S
en  
si  
ti  
vi  
ty  
t
L
R
Fr  
Ou ont  
ut  
tp  
L
LE  
D
S
el  
ec  
t
1
P
ow  
er  
2
Fr  
eq  
3
ue  
nc  
4
y
P
A
d
ju  
re  
c
st  
is  
io  
P
A
Su  
b
V
n
P
ow  
o
lu  
R
-
m
e
2
4
e
r
Lo  
w
5
Po  
w
Low  
er  
-M  
id  
F
In  
H
igh  
-M  
-
R
li
id  
Tr  
eb  
le  
+
M
d
ad  
e
in  
r  
+
D
U
S
ef  
ea  
A
t
+
ub  
+
w
+
M  
id  
i
M
id  
l
e
P
A
R
-2  
45  
PAR-245  
Preamp/Equalizer  
Hz  
7K  
3.3  
z-2  
KH  
14  
H
z
KH  
.75  
-15  
Hz  
7K  
9.3  
L
Q
H
z
KH  
4
37  
-9.  
Hz  
4K  
Q
.
5
st  
Boo  
1
H
ut  
/
C
hz  
.5K  
z-4  
KH  
4
1
2
db  
L
+
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1.9  
Q
5
st  
oo  
A
S
1
.
b
H
t
/
B
1
in  
e
ad  
U
Cu  
Hz  
5K  
4
2
-1.  
db  
M
+
1
2
e
r
0
94  
Hz  
a
liz  
Q
.
5
t
q
u
1
os  
Bo  
E
H
/
b  
ric  
et  
m
ara  
ut  
-
1
z
4
C
KH  
z-1  
0H  
33  
b
+
1
2
d
P
Q
.
5
B
a
nd  
1
st  
oo  
H
1
0
B
-
1
2
b  
t
Cu  
/
Hz  
50  
z-5  
0H  
16  
4
+
1
2
db  
L
Q
.
5
1
t
os  
Bo  
H
/
-
1
2
d
b
Hz  
60  
z-2  
0H  
4
C
ut  
8
+
1
2
d
b
Q
1
H
ost  
o
Hz  
30  
4
ut  
/
B
-
1
2
db  
C
z-1  
L
4
0H  
1
2
db  
Q
5
+
H
s
t
B
oo  
2
db  
Hz  
4
ut  
/
-
1
z-  
2
70  
C
0H  
d
b
Q
5
+
1
2
H
st  
oo  
4
/
B
L
C
ut  
d
b
r
Q
+
1
2
e
ow  
s
t
r
P
oo  
e
4
/
B
w
o
C
ut  
P
n
io  
is  
+
1
2
db  
c
e
0
1
r
-2  
s
t
P
Q
o
Bo  
M
ut  
/
P
C
d
b
+
1
2
EQ  
-
1
b  
at  
fe  
De  
r
e
w
o
P
n
io  
is  
c
re  
P
In  
p
u
a
tt  
t
e
O
u
n
u
a
t
p
tio  
n
u
t
-1  
2
st  
e
re  
d
B
in  
o
o
u
n
m
t
o
no  
L
i
R
L
R
d
n
u
te  
o
o
r
G
m
r
e
e
R
w
o
P
PMQ-210 Ten Band Parametric EQ  
POWERCLASS Amplifier  
POWERCLASS Amplifier  
PC6600  
Left Channel  
PC6600  
Right Channel  
Passive  
Crossover  
Passive  
Crossover  
Tweeter  
Tweeter  
MidRange  
MidRange  
Tweeter  
Passive  
Crossover  
Passive  
Crossover  
Tweeter  
MidRange  
MidRange  
Sub  
Sub  
POWERCLASS Amplifiers  
2 - PC6600  
Front High Pass 88Hz  
Rear High Pass 88Hz  
All Channels Bridged  
25  
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BLOCK DIAGRAM  
4200/4400  
BSA  
Q
INPUT ATTENUATION  
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BLOCK DIAGRAM  
4800  
BSA  
PULS  
Q
BSARMOTE  
Q
INPUT ATTENUATION  
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BLOCK DIAGRAM  
6600  
R
O
B
S
B
S
PLUS  
Q
Q
INPUT ATTENUATION  
28  
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WARRANTY  
Three-Year Limited U.S.A. Warranty  
This warranty gives you specific legal rights, and you may also have other rights which vary from  
state to state. PrecisionPower warrants its products to be free from defects in materials and  
workmanship under normal use and service for a period of three (3) years from the date of  
original purchase when the unit is installed by an Authorized Dealer. Non-Authorized Dealer  
installed products carry a one (1) year parts and ninety (90) days labor limited warranty. The  
extent and conditions of Limited Warranty are as follows:  
1. Authorized Dealer Installed Products:PrecisionPower will either repair or replace at no charge,  
to the original purchaser, any unit which PrecisionPower’s examination discloses to be defective  
and under warranty, provided the defect occurs within three (3) years from the date of original  
purchase when the unit is installed by an Authorized Dealer and the product is returned immedi-  
ately to PrecisionPower. This warranty is not transferable.  
2. Non-Authorized Dealer Installed Products: PrecisionPower will either repair or replace at no  
charge, to the original purchaser, any unit which PrecisionPower’s examination discloses to be  
defective and under warranty, provided the defect occurs within ninety (90) days from the date of  
purchase and the product is returned immediately to PrecisionPower. Warranty claims beyond  
ninety (90) days for Non-Authorized Dealer Installed Products will be for parts only and will  
extend for one (1) year from the date of purchase. This warranty is not transferable.  
3. The date of purchase and proof of Authorized Dealer Installation of a PrecisionPower product  
must be established by an original sales receipt which must accompany the article being re-  
turned for warranty work.  
4. This warranty shall NOT apply to any PrecisionPower product found to have the original fac-  
tory serial number removed or defaced. All products received (by PrecisionPower) for in war-  
ranty or out of warranty repair, with their original serial numbers removed or defaced, will NOT be  
repaired and will be returned to sender, freight collect. Refer to original packaging for the serial  
number of your component speakers.  
5. The provisions of this warranty shall not apply to any PrecisionPower product used for a  
purpose for which it is not designed, which has been repaired or altered in any way, or which has  
been connected, installed, or adjusted other than in accordance with the instructions furnished in  
PrecisionPower’s owner’s manual. Nor shall this warranty apply to any part which has been  
subject to misuse, neglect, or accident.  
6. PrecisionPower does not authorize any other persons to assume any other liability in connec-  
tion with its products. THIS WARRANTY IS THE ONLY EXPRESS WARRANTY MADE BY  
PRECISIONPOWER APPLICABLE TO ITS PRODUCTS. ANY IMPLIED WARRANTY OR MER-  
CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE APPLICABLE TO  
PRECISIONPOWER PRODUCTS IS LIMITED IN DURATION TO THE DURATION OF THIS  
LIMITED WARRANTY. PRECISIONPOWER SHALL NOT BE LIABLE FOR THE INCIDENTAL,  
CONSEQUENTIAL, OR COMMERCIAL DAMAGES RESULTING FROM THE BREACH OF THIS  
WRITTEN WARRANTY. Some states or provinces do not allow the exclusion or limitation of  
incidental or consequential damages or limitations on how long an implied warranty lasts; so the  
above limitations or exclusions may not apply to you.  
7.Your product will be serviced on an in-warranty basis within the warranty period for the correc-  
tion of warranted defects. If improper operation of your PrecisionPower product should occur,  
contact your Authorized Dealer for assistance with the return and factory repair of your  
PrecisionPower  
product. If an Authorized Dealer is not available, return the unit including your name, telephone  
number, return address, a copy of your sales receipt, and a description of the problem to:  
PrecisionPower,Inc.  
Service Department  
4829 S. 38th Street  
Phoenix, AZ 85040-2964  
TO RETURN PRECISIONPOWER PRODUCTS OUT OF WARRANTY: Return the unit, postage  
prepaid, in the original protective carton. Please include a description of the problem and, if  
desired, a request for an estimate of repair costs. Unless a request for an estimate is included,  
the unit will be repaired as necessary. Please contact PrecisionPower Customer Service at 1-  
800-62-POWER for questions concerning out of warranty repair charges. Repaired unit will be  
returned with an itemized statement, C.O.D.  
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