AMPLIFIER MODELS
DCX 300.4 |
DCX 600.4 |
DCX 800.5 |
DCX 1000.4 |
TABLE OF CONTENTS
Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Fuse Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Amplifier Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 QBASS/QBASS PLUS Specifications . . . . . . . . . . . . . . . . . . . . . .6 Tools/Parts for Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Ground Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Charging System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Current Draw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Power Wire Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Power Lock Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Amplifier Bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Mixed Mono Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 DCX 300.4 Front Plate Diagram . . . . . . . . . . . . . . . . . . . . . . . . .13
DCX 300.4 End Plate Diagram . . . . . . . . . . . . . . . . . . . . . . . . . .14 DCX 600.4 and DCX 1000.4 Front Plate Diagram . . . . . . . . . . .15 DCX 800.5 Front Plate Diagram . . . . . . . . . . . . . . . . . . . . . . . . .17 DCX 600.4, DCX 800.5, DCX 1000.4 End Plate Diagram . . . . .19 Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 DCX 300.4, 600.4, 1000.4 Block Diagram . . . . . . . . . . . . . . . . .20
DCX 800.5 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Advanced Instrumentation Input . . . . . . . . . . . . . . . . . . . . . . . . .22 QBASS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 QBASS PLUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 TC-X Crossover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Crossover Detent Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Input Combine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Adjusting Input Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 High Mass Internal Heatsink . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Forced Air Thermal Management . . . . . . . . . . . . . . . . . . . . . . . .26 AP-IV Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
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CONGRATULATIONS
Thank you for choosing PrecisionPowerTM audio equipment. Designed and engineered in the USA, this product combines innovative technology with the finest materials to consistently deliver Absolutely State of the Art™ performance, sound quality, reliability, and value. This PrecisionPowerTM product reflects our commitment to offer you unparalleled performance and quality for years of dependable service and listening enjoyment.
SERVICE
Do not attempt to service PrecisionPowerTM products yourself. Performing maintenance on your audio equipment will void the warranty. Many parts of the PrecisionPowerTM product are custom built to our specifications. Our factory parts are not made available to anyone else nor are they for sale. Our goal is to make sure that your PrecisionPowerTM product will always sound as good as the day it was purchased. Contact your Authorized PrecisionPowerTM Dealer about obtaining any warranty service through PrecisionPowerTM. (See the Warranty on the outside of the back cover).
CAUTION
Extended use of a high powered audio system may result in hearing loss or damage. While PrecisionPowerTM systems are capable of
“Concert Level” volumes with incredible accuracy, they are also designed for you to enjoy at more reasonable levels all of the sonic subtleties created by musicians. Please observe all local sound ordinances.
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FEATURES
Advanced Instrumentation Input Stage
TC-X Crossover 12dB/Octave; HP/LP/FULL; 30-4kHz Crossover Adaptive PWM Power Supply (DCX 300.4, DCX 600.4, DCX 800.5) AP-IV Protection Circuity
Fully Regulated PWM Power Supply (DCX 1000.4) Fully Complementary Darlington Output Stage Forced Air Thermal Management (DCX 1000.4) QBASSTM Bass Boost (DCX 300.4)
QBASS PlusTM Bass Boost (DCX 600.4, DCX 800.5, DCX 1000.4)
High Voltage Input Capability with -12dB Attention Switch Gold Plated RCA Input and Output Connectors PowerLockTM Speaker and Power Wire Connectors Mixed Mono/Stereo Operation
2 Yr Warranty if installed by an Authorized PrecisionPower Dealer
SPECIFICATIONS
Power Ratings |
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|
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MODEL |
4ohm STEREO |
2ohm STEREO |
4ohm MONO |
||
DCX 300.4 |
4 |
X 50 |
4 |
X 75 |
2 X 150 |
DCX 600.4 |
4 |
X 75 |
4 |
X 150 |
2 X 300 |
DCX 1000.4 |
4 |
X 125 |
4 |
X 250 |
2 X 500 |
DCX 800.5 |
4 |
X 50 |
4 |
X 100 |
2 X 200 |
|
4ohm MONO |
2ohm MONO |
|
||
5/Ch. |
1 |
X 200 |
1 |
X 400 |
|
All power ratings given above are tested at 12.5V; 4 ohms; 20Hz - 20kHz.
General Specifications |
|
Frequency Response |
20Hz - 20kHz |
Power Bandwidth |
10Hz - 50 kHz |
Total Harmonic Distortion |
>0.02% |
S/N Ratio |
<110dB |
Input Topology |
Instrumentation |
Input Sensitivity |
150mV - 12 Volts RMS |
|
(with -12dB pad) |
Input Impedance |
40 kOhms |
Load Impedance (stereo) |
2 - 8 Ohms |
Load Impedance (bridged) |
4 - 8 Ohms |
Supply Voltage |
11 - 16 Volts |
Damping Factor |
>500 |
Slew Rate |
>20V/µs |
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QBASSTM |
Up to +18dB @ 40Hz |
|
QBASS PLUSTM |
Up to +18dB Boost |
|
|
@30, 36, 44, or 60Hz |
|
Crossovers |
12dB/Octave |
|
Crossover Frequency |
30-4kHz |
|
Idle Current: |
DCX 300.4 |
2 Amps |
|
DCX 600.4 |
2.5 Amps |
|
DCX 1000.4 3 Amps |
|
|
DCX 800.5 |
2.5 Amps |
Dimensions |
|
|
|
Length |
Width |
Height |
DCX 300.4 |
21-½” |
10-½” |
2-¾” |
DCX 600.4 |
24-¾” |
10-½” |
2-¾” |
DCX 1000.4 |
29-3/8” |
10-½” |
2-¾” |
DCX 800.5 |
28-1/8” |
10-½” |
2-¾” |
FUSE REQUIREMENTS
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 fuse or circuit breaker. You may also want to add a power distribution block near your amplifiers to distribute large gauge power cable to multiple amplifiers.
Amp |
Fuse |
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|
DCX 300.4 |
50A |
|
|
DCX 600.4 |
70A |
|
|
DCX 1000.4 |
100A |
|
|
DCX 800.5 |
100A |
|
|
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AMPLIFIER STATUS LEDS
3 4
SHORT PROTECT THERMAL PROTECT
POWER |
CLIP OUT |
1 2
The LEDs provide the following indications:
1.Power - This LED illuminates RED when the amplifier power is turned on with the remote input (output muted). After a short time delay this LED will turn GREEN (amplifier ready).
2.Clip Output - This LED illuminates RED on the peaks of the output signal when the peaks are too high. This clipping causes audible distortion in the speakers.
3.Short - This LED illuminates RED on a short condition. The amplifier will turn off and try to turn back on.
4.Thermal - This LED illuminates RED on a thermal condition. The amplifier will turn off and turn back on in a minute or so.
Note: Read the AP-IV Protection Circuit section for additional information regarding Short and Thermal protection.
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QBASS/QBASS PLUS SPECIFICATIONS
QBASSTM (DCX 300.4)
Up to 18dB of boost centered at 40Hz, with a Q-factor of 2.
QBASS PLUSTM (DCX 600.4, 1000.4, 800.5)
Up to 18dB of boost with selectable center frequency at 30Hz, 36Hz,
44Hz or 60Hz, with a Q-factor of 2.
Optional QBASS REMOTETM (DCX 600.4, 1000.4, 800.5)
This boost control can be mounted in the dash and will supersede the boost control on the amplifier endplate.
TOOLS/PARTS FOR INSTALLATION
NOTE: TOOLS ARE 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, flat washer, star washer) (see details)
2 - Ring connectors (large enough to accommodate your method of grounding)
In-line fuse or circuit breaker Power and ground wire Speaker wire - 12-16 gauge
Grommets (sized to work with the power wire you plan to use in your installation)
Tube of silicone sealant
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WIRING
Before beginning, disconnect the negative (-) terminal of the battery prior to connecting the amplifier to the positive (+) 12V terminal to prevent a short to ground and potential damage to wiring and equipment. Some vehicle radios have an anti-theft feature where when the radio is removed from 12V the radio will no longer function and must be code reset.
Note: The cables running from the battery to the rear of the car should be installed on the side of the car opposite to the antenna.
When using 16 gauge wire or larger, run the speaker wires from the amplifier location through the vehicle to the speakers. Observe the
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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 PowerLockTM connector. Loosen the outer screws on the underside of the connector. Insert the speaker leads into the end. Check to be sure you've maintained proper polarity before securing each wire, and plug the PowerLockTM into the amplifier.
Note: The power connector is inserted into the amplifier with the wire clamping screws in the up position as shown below.
For the rear channels, locate the four terminal speaker PowerLockTM connector. (For DCX 800.5, the 5th channel also uses a four terminal PowerLockTM connector.) On 4 and 5 channel DCX amplifiers, all speaker PowerLockTM 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 PowerLockTM connector into the amplifier with the screws on top.
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