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Directed Electronics A1200/4 manual

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Table of contents for the manual

  • Page 1

    AMPLIFIER MODELS A600/4 A1200/4[...]

  • Page 2

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

  • Page 3

    CONGRA TULA TIONS Thank y ou 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 mater ials to consistently deliv er Absolutely State of the Ar t ™ perf or mance, sound quality , reliability , and v alue. This Precision P ower TM product reflects our [...]

  • Page 4

    FEA TURES Adv anced Instrumentation Input Stage TC-X Cr ossover 24dB/Octa v e; HP/LP/FULL; 30-4kHz Crossov er Adaptiv e PWM P ow er Supply AP-IV Protection Circuity Fully Complementar y Darlington Output Stage QB ASS TM Bass Boost (A600/4) QB ASS Plus TM Bass Boost (A1200/4) High V oltage Input Capability with -12dB Attenuation Switch Gold Plated R[...]

  • Page 5

    SPECIFICA TIONS Nominal Power Ratings MODEL 4ohm STEREO 2ohm STEREO 4ohm MONO A600/4 4 X 50 4 X 75 2 X 150 A1200/4 4 X 100 4 X 150 2 X 300 General Specifications F requency Response 20Hz - 20kHz P ow er Bandwidth 10Hz - 50 kHz T otal Harmonic Distor tion + N <0.05% Input T opology Instrumentation Input Sensitivity 150mV - 12 V olts RMS (with -12[...]

  • Page 6

    5 FUSE REQUIREMENTS Y ou will need to install an in-line fuse or circuit break er in the pow er wire within 18” of the batter y . This fuse or circuit breaker is to protect y our 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 you are u[...]

  • Page 7

    AMPLIFIER ST A TUS LEDS The LEDs provide the f ollowing indications: 1. P ower - These LEDs illuminates the center Precision P ow er logo bac kground when the amplifier po wer is tur ned on. 2. Shor t - These LEDs behind the PPI logo will flash to indicate a shor t on the output. 2. Thermal - These LEDs behind the PPI logo will e xtinguish if the a[...]

  • Page 8

    T OOLS/P ARTS FOR INST ALLA TION NO TE: T OOLS ARE NO T SUPPLIED . Small flat b lade scre wdriver Phillips scre wdriver (#2 or medium siz ed) Wire cutters Wire strippers 4 - #6 round head scre ws, and 1 - #8 sheet metal scre w . (or nut, bolt, flat washer , star washer) (see details) 2 - Ring connectors (large enough to accommodate y our method of [...]

  • Page 9

    WIRING Bef ore beginning, disconnect the negative (-) terminal of the batter y prior to connecting the amplifier to the positive (+) 12V terminal to pre vent a shor t to ground and potential damage to wiring and equipment. Some v ehicle radios ha v e an anti-theft f eature where when the radio is remo ved from 12V the r adio will no longer function[...]

  • Page 10

    Obser v e the same precautions for routing these wires that y ou f ollowed f or r unning the pow er and remote tur n on wires. Cut off e xcess and, using wire str ippers , strip 1/4-inch of insulation. Locate the front speak er/remote tur n-on P ower Loc k TM connector . Using a he x wrench loosen the scre ws on the upperside of the connector . Ins[...]

  • Page 11

    F or the rear channels, locate the f our ter minal speak er P ower Loc k TM connector . Using a he x wrench loosen the scre ws on the upperside of the connector . Inser t the speaker leads into the end and secure with the he x wrench. Check to be sure y ou've maintained proper polarity bef ore secur ing each wire . GROUND WIRING Locate an area[...]

  • Page 12

    CHARGING SYSTEM If y our total current dra w is ov er 100 amps ( or total output pow er is ov er 600 watts ), y ou are probab ly e xceeding the capability of your charging system. Dimming lights and fluctuating voltage are solid indicators that y ou need to upgr ade y our alter nator , batter y , or both. Y ou should also chec k the condition and c[...]

  • Page 13

    load, doub le its 4 ohm RMS rating. These amplifiers will eff ectively doub le their pow er at this load. 1000W X 1.5 X2 = 3000 watts 3000W = 250 Amps total current dra w 12V If y ou are using more than one amplifier , add up the total current dra w f or all of them and choose the appropriate gauge based on the gr and total. PO WER WIRE SIZE A mini[...]

  • Page 14

    PO WER LOCK CONNECT ORS Once y ou ha v e r un both the pow er and ground wires, then connect the cab les to the amplifier . Cut off e xcess wire, and using wire strippers, strip the ends of the power and g round cab les appro ximately 1/4 inch. Locate the Po w e r Lock TM pow er and ground connector (supplied). Using a hex wrench, loosen the scre w[...]

  • Page 15

    suitab le subwoof er or center channel. Der iving the mono channel is accomplished b y using the Left Channel P ositiv e wire (L+) as the positiv e speaker wire and the Right Channel Negativ e wire (R-) as the negativ e speaker wire . Note: It is impor tant that a minimum 4 ohm impedance is obser v ed. If the impedance drops below 4 ohms while the [...]

  • Page 16

    A600/4 FR ONT PLA TE DIA GRAM 1. Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums f or proper amplifier cooling. 2. Rear Speaker Connector: Speaker P ower Loc k TM connector . 3. Fr ont Speaker/Remote Connector: Speak er P ower Loc k TM connector . 4. QB ASS TM Level Contr ol: Controls bass boost, centered at 40Hz with up t[...]

  • Page 17

    12. Rear Input INT/EXT Switch: Select the INT position if y ou want to use the inter nal signal path from the front crosso v er for the rear input, or the EXT position to use the e xter nal rear RCA input. 13. Sour ce HP/LP/FULL Switch: Select the desired setting. HP/LP/FULL f or the inter nal signal from the front channel to the rear channel when [...]

  • Page 18

    A600/4 END PLA TE DIA GRAM 1. P ower/Gr ound Po w e r Lock TM : After y ou ha v e securely connected y our pow er and ground wires, plug in the P ower/Ground Po w e r Lock TM connector here. 2. Cooling Plen ums: Maintain a minimum 2” clearance around cooling plenums f or proper amplifier cooling. A1200/4 FR ONT PLA TE DIA GRAM 1. Cooling Plenums:[...]

  • Page 19

    4 & 5. QB ASS TM 1 and QB ASS TM 2 Freq.: Use these s witches, QB ASS TM 1 and QB ASS TM 2 to progr am the QB ASS PLUS TM circuit frequency . 6. -12dB Attenuation Switch: Push this s witch ‘IN’ f or high v oltage input (4V -12V) capability . This button must be pushed ‘IN’ f or use with speak er le vel input on common g round head-units[...]

  • Page 20

    19. Output Sour ce HP/LP/FULL Switch: Select the desired crossov er setting, HP/LP/FULL f or the RCA output signal. 20. Output Crosso ver Freq. Contr ol: Use this control to adjust the output crossov er frequency from 30Hz to4kHz. 21. Output Cr osso ver HP/LP/FULL Switch: Select the desired crossov er setting, HP/LP/FULL f or the inter nal output s[...]

  • Page 21

    INPUTS There are two sets of RCA jac ks on the front end of your amplifier . The RCA cab les from y our source unit go in the set labeled INPUTS . If your source unit doesn’t ha v e RCA outputs, then add a set of RCA plugs (a v ailable at y our dealer) to your front or rear set of speak er leads (see dra wing below). Plug them into the input jac [...]

  • Page 22

    A600/4, A1200/4 BLOCK DIA GRAM INPUT A TTENUA TION INPUT A TTENUA TION 21[...]

  • Page 23

    AD V ANCED INSTRUMENT A TION INPUT The Adv anced Instr umentation Input has been incor porated from the legendar y Precision P ower TM 2500F1 . This circuit completely isolates the chassis ground from the audio circuit of the amplifier and reduces noise radiated into y our signal cables b y up to 40dB. This is equiv alent to a noise reduction of ap[...]

  • Page 24

    QB ASS/QBASS PLUS SPECIFICA TIONS QB ASS TM ( A600/4 ) Up to 18dB of boost centered at 40Hz, with a Q-f actor of 2. QB ASS PLUS TM ( A1200/4 ) Up to 18dB of boost with selectab le center frequency at 30Hz, 36Hz, 44Hz or 60Hz, with a Q-f actor of 2. Optional QB ASS REMO TE TM ( A1200/4 ) This boost control can be mounted in the dash and will superse[...]

  • Page 25

    CA UTION: QB ASS PLUS TM should only be used in systems with a strong subwoof er section. +18dB is a tremendous amount of bass boost and ma y damage your speak ers or create e xcessiv e distor tion if ab used. The optional QB ASS REMO TE TM : This boost control can be mounted in the dash and will supersede the boost control on the endplate. These P[...]

  • Page 26

    25 TC-X CR OSSO VER Y our ne w amplifier has a TC-X Crossov er (T otal Control X-ov er ® ) 30Hz-4kHz (see this guide f or Crossov er Char t).12dB per octa ve 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 ar[...]

  • Page 27

    CR OSSO 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 170[...]

  • Page 28

    INPUT COMBINE Y our multi-channel amplifier can use both front and rear outputs from y our head unit to maintain the ability to f ade front to rear , or y ou can run a single set of RCAs to the front inputs and push in the Rear Input INT/EXT s witch on the amplifier endplate to route the front signal to the rear channels as well. ADJUSTING INPUT GA[...]

  • Page 29

    28 Ther mal Protection engaged. The amplifiers will tur n off and after a minute or so will come bac k on (the status LEDs will e xtinguish). In this case, ensure that there is nothing b locking the normal con v ection airflow of the amplifier . No obstr uction should be within 2” of the amplifier on all sides. Note: Low battery v oltage will cau[...]

  • Page 30

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