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Precision Power DCX 300.2 manual

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Table of contents for the manual

  • Page 1

    AMPLIFIER MODELS DCX 300.2 DCX 500.2[...]

  • Page 2

    T ABLE OF CONTENTS Congratulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Ser vice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 F eatures . . . . . . . . . . . . .[...]

  • Page 3

    CONGRA TULA TIONS Thank you f or choosing Precision P ower TM audio equipment. Designed and engineered in the USA, this product combines innov ativ e technology with the finest materials to consistently deliver Absolutely State of the Ar t ™ perf or mance, sound quality , reliability , and v alue. This Precision P ower TM product reflects our com[...]

  • Page 4

    FEA TURES New! Advanced Instrumentation Input Stage. New! 24dB/Octav e; HP/LP/FULL; 30-4kHz Crossov er . New! Independent Line Output Crossov er 30-4kHz PWM P ower Supply T r iple Dar lington Output Stage. AP-IV Protection Circuity QB ASS TM Bass Boost High V oltage Input Capability with -12dB Attention Switch. Gold Plated RCA Input and Output Conn[...]

  • Page 5

    SPECIFICA TIONS Power Ratings MODEL 4 ohm 2 ohm 4 ohm MONO DCX 300.2 2 X 75 2 X 150 1 X 300 DCX 500.2 2 X 125 2 X 250 1 X 500 All power ratings given abo ve are tested at 12.5V ; 4 ohms; 20Hz - 200Hz. General Specifications Load Impedance (Stereo) 2–8 ohms Load Impedance (Bridged) 4–8 ohms Input T opology Balanced differential Conv ersion Effic[...]

  • Page 6

    5 Fuse Requirements Y ou will need to install an in-line fuse or circuit break er in the power wire within 18” of the batter y . This fuse or circuit breaker is to protect your v ehicle from fire in case the power wire shor ts to the v ehicle body . If you are only using one amplifier , use the fuse rating indicated in this char t. If y ou are us[...]

  • Page 7

    AMPLIFIER ST A TUS LEDS The LEDs provide the f ollowing indications: 1. P ower - This LED illuminates RED when the amplifier pow er is tur ned on with the remote input (output muted). After a shor t time dela y this LED will tur n GREEN (amplifier ready). 2. Clip Output - This LED illuminates RED on the peaks of the output signal when the peaks are[...]

  • Page 8

    T OOLS/P ARTS FOR INST ALLA TION NO TE: TOOLS ARE NO T SUPPLIED. Small flat blade scre wdr iv er Phillips screwdriv er (#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 grou[...]

  • Page 9

    Note: The cables running fr om 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 v ehicle to the speakers . Obser ve the same precautions f or routing these wires that you f ollowed f or running the[...]

  • Page 10

    Note: The power connector is inserted into the amplifier with the wire clamping scre ws 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 quar ter down to bare metal. Inspect the area around and under neath to be sure you will not drill into wires, brak e or fu[...]

  • Page 11

    Y ou should also chec k the condition and current capacity of the stock battery negative cab le and connections, and replace or upgrade as necessary . K eep in mind that your amplifiers simply conv er t electr ical energy to acoustical energy , and any electrical deficiency will compromise the perf or mance of y our sound system. F or more inf or m[...]

  • Page 12

    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 eff ectiv ely double their po wer at this load. 500W X 1.5 X2 = 1500 watts 1500W = 125 Amps total current dra w 12V If you are using more than one amplifier , add up the total current dra w f or all of them and choose the[...]

  • Page 13

    PO WER LOCK CONNECT ORS Once you ha ve run both the power and g round wires, then connect the cables to the amplifier . Cut off e xcess wire, and using wire strippers, strip the ends of the power and ground cab les appro ximately 1/4 inch. Locate the Po w e r Lock TM pow er and ground connector (supplied). With a small flat blade scre wdr iv er , l[...]

  • Page 14

    DCX 300.2, DCX 500.2 FRONT PLA TE DIA GRAM 1. Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums f or proper amplifier cooling. 2. Speaker/Remote Connector: Plug in the P ower Loc k TM connector here. 3. Output Xover Freq. Control: Use this control to adjust the sub bass output signal crossov er frequency from 30Hz to 4kHz. ([...]

  • Page 15

    DCX 300.2, DCX 500.2 END PLA TE DIA GRAM 1. Cooling Plen ums: Maintain a minim um 2” clearance around cooling plenums f or proper amplifier cooling. 2. P ower/Gr ound Po w e r Lock TM : After you ha ve securely connected your po wer and ground wires, plug in the P ower/Ground Po w e r Lock TM connector here. 3. QB ASS REMO TE TM : Plug in the dat[...]

  • Page 16

    INPUTS There are two sets of RCA jac ks on the front end of your amplifier . The RCA cables from y our source unit go in the set labeled INPUTS. If your source unit doesn’t ha ve RCA outputs , then add a set of RCA plugs (av ailable at y our dealer) to your front or rear set of speaker leads (see dr awing belo w). Plug them into the input jacks ,[...]

  • Page 17

    QB ASS PLUS/QBASS REMO TE On DCX 300.2 , and DCX 500.2 amplifiers, w e’v e taken bass control to a higher le v el with QB ASS PLUS TM . The two QB ASS TM s witches (labeled 1 and 2) on the front end of the amplifier allow y ou to select one of f our frequency centers 30Hz, 36Hz, 44Hz and 60Hz. On the rear end plate you will find the QB ASS TM le [...]

  • Page 18

    TC-X CROSSO VER Y our new DCX amplifier has a TC-X Crossov er (T otal Control X- over ® ) 30Hz-4kHz (see this guide for Crosso ver Chart).12dB per octav e phase correlated crossov er b uilt-in to provide superior system fle xibility without the added e xpense and installation of an outboard crossov er . The speaker outputs of y our amplifier are h[...]

  • Page 19

    CROSSO VER DETENT CHART Detent # Low P ass F requency (Hz) @ -3dB High P ass F requency (Hz) @ -3dB 1 2 3 4 5 6 7 8 9 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 28 28 30 30 30 32 34 36 38 42 46 50 52 54 60 66 76 88 100 116 136 144 168 198 240 286 310 340 380 424 484 576 632 748 932 1076 1428 1700[...]

  • Page 20

    ADJUSTING INPUT GAIN 1. Adjust all amplifier input gain controls to just abov e minimum sensitivity (fully counterclockwise). 2. Using the cleanest music source (CD) pla ying, tur n up the head unit source v olume until you can hear distor tion. Now turn it down a bit until you cannot hear the distortion (usually just below full v olume). 3. Increa[...]

  • Page 21

    TROUBLESHOO TING NO SOUND Is the LED illuminated? YES NO Check P ower and Remote tur n-on wire f or voltage . Make sure the g round wire is secure. STILL NO SOUND See your A uthor ized Precision P ower TM Dealer or call 1-800-62PO WER. SOUND IN ONE CHANNEL ONL Y Re verse the left and right speakers b y unplugging the speaker connector , turning it [...]

  • Page 22

    LIMITED TWO YEAR CONSUMER W ARRANTY : Directed Electronics, Inc. promises to the original purchaser , to replace this product should it prov e to be defectiv e in workmanship or mater ial under normal use, f or a period of two y ears from the date of purchase b y the dealer as indicated by the date code marking of the product PRO VIDED the product [...]