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Summary of Contents for Precision Power DCX 300.2
- Page 1 AMPLIFIER MODELS DCX 300.2 DCX 500.2...
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Page 2: Table Of Contents
DCX 300.2, DCX 500.2 Front Plate Diagram ....13 DCX 300.2, DCX 500.2 End Plate Diagram ....14 Inputs . -
Page 3: Congratulations
CONGRATULATIONS Thank you for choosing PrecisionPower 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 PrecisionPower product reflects our commitment to offer you unparalleled performance and quality for years of dependable service and listening enjoyment. -
Page 4: Features
FEATURES New! Advanced Instrumentation Input Stage. New! 24dB/Octave; HP/LP/FULL; 30-4kHz Crossover. New! Independent Line Output Crossover 30-4kHz PWM Power Supply Triple Darlington Output Stage. AP-IV Protection Circuity QBASS Bass Boost High Voltage Input Capability with -12dB Attention Switch. Gold Plated RCA Input and Output Connectors. PowerLock Speaker and Power Wire Connectors. -
Page 5: Specifications
SPECIFICATIONS Power Ratings MODEL 4 ohm DCX 300.2 2 X 75 DCX 500.2 2 X 125 All power ratings given above are tested at 12.5V; 4 ohms; 20Hz - 200Hz. General Specifications Load Impedance (Stereo) Load Impedance (Bridged) Input Topology... - Page 6 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. DCX 300.2 DCX 500.2 Dimensions Length DCX 300.2...
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Page 7: Amplifier Status Leds
AMPLIFIER STATUS LEDS SHORT PROTECT THERMAL PROTECT POWER CLIP OUT 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). -
Page 8: Tools/Parts For Installation
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... - Page 9 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 same precautions for routing these wires that you followed for running the power and remote turn on wires.
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Page 10: Ground Wiring
Note: The power connector is inserted into the amplifier with the wire clamping screws in the up position as shown below. GROUND WIRING Locate an area near the amplifier(s) that is metal and clean an area about the size of a quarter down to bare metal. Inspect the area around and underneath to be sure you will not drill into wires, brake or fuel lines, etc. -
Page 11: Current Draw
You should also check the condition and current capacity of the stock battery negative cable and connections, and replace or upgrade as necessary. 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 you local authorized PrecisionPower Technical Support at 1-800-62POWER x2033 . -
Page 12: Power Wire Size
If the same amplifier is driven into a 2 ohm stereo or 4 ohm mono load, double it’s 4 ohm RMS rating. All DCX amplifiers will effectively double their power at this load. 500W X 1.5 X2 = 1500 watts 1500W = 125 Amps 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... -
Page 13: Powerlock Connectors
Once the wires are secure, the PowerLock Power/Ground PowerLock DCX 300.2 , and DCX 500.2 . power and ground may be plugged into the amplifier. The will accommodate 4 gauge wire for the... -
Page 14: Dcx 300.2, Dcx 500.2 Front Plate Diagram
DCX 300.2, DCX 500.2 FRONT PLATE DIAGRAM DC X 300. 2 DC X 500. 2 Fr ont Panel BR I D G E R - R + R EM O U TPU T FR EQ FU LL H P 1. Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums for proper amplifier cooling. -
Page 15: Dcx 300.2, Dcx 500.2 End Plate Diagram
DCX 300.2, DCX 500.2 END PLATE DIAGRAM DC X 300. 2 DC X 500. 2 End Panel 1. Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums for proper amplifier cooling. 2. Power/Ground PowerLock connected your power and ground wires, plug in the Power/Ground PowerLock connector here. -
Page 16: Inputs
INPUTS There are two sets of RCA jacks on the front end of your amplifier. The RCA cables from your source unit go in the set labeled INPUTS. If your source unit doesn’t have RCA outputs, then add a set of RCA plugs (available at your dealer) to your front or rear set of speaker leads (see drawing below). -
Page 17: Qbass Plus/Qbass Remote
QBASS PLUS/QBASS REMOTE On DCX 300.2 , and DCX 500.2 amplifiers, we’ve taken bass control to a higher level with QBASS PLUS (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. On the... -
Page 18: Tc-X Crossover
HP/LP/FULL, your new DCX amplifier allows independent selection of frequencies from 30Hz-4kHz (see Crossover Detent Chart in this guide). DCX 300.2/500.2 Speaker Output - 12dB/Octave, Detented HP/LP 30Hz-4kHz Low Level Output - 12dB/Octave, Detented; HP/LP... -
Page 19: Crossover Detent Chart
CROSSOVER DETENT CHART Detent # Low Pass High Pass Frequency (Hz) Frequency (Hz) @ -3dB @ -3dB 1036 1144 1300 1504 1812 1076 2196 1428 2840 1700 4116 2436 4540 2830 4728 2980 4728... -
Page 20: Adjusting Input Gain
ADJUSTING INPUT GAIN 1. Adjust all amplifier input gain controls to just above minimum sensitivity (fully counterclockwise). 2. Using the cleanest music source (CD) playing, turn up the head unit source volume until you can hear distortion. Now turn it down a bit until you cannot hear the distortion (usually just below full volume). -
Page 21: Troubleshooting
TROUBLESHOOTING NO SOUND Is the LED illuminated? STILL NO SOUND See your Authorized PrecisionPower SOUND IN ONE CHANNEL ONLY Reverse the 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. - Page 22 LIMITED TWO YEAR CONSUMER WARRANTY: Directed Electronics, Inc. promises to the original purchaser, to replace this product should it prove to be defective in workmanship or material under normal use, for a period of two years from the date of purchase by the dealer as indicated by the date code marking of the product PROVIDED the product was installed by an authorized Directed dealer.
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