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Table of Contents
Related Manuals for Directed Electronics Precision Power A1200/4
Summary of Contents for Directed Electronics Precision Power A1200/4
- Page 1 AMPLIFIER MODELS A600/4 A1200/4...
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Page 2: Table Of Contents
A1200/4 Front Plate Diagram ......17 A1200/4 End Plate Diagram ......19 Inputs . -
Page 3: Congratulations
CONGRATULATIONS Thank you for choosing Precision Power 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 Precision Power product reflects our commitment to offer you unparalleled performance and quality for years of dependable service and listening enjoyment. -
Page 4: Features
AP-IV Protection Circuity Fully Complementary Darlington Output Stage QBASS Bass Boost (A600/4) QBASS Plus Bass Boost (A1200/4) High Voltage Input Capability with -12dB Attenuation Switch Gold Plated RCA Input and Output Connectors PowerLock Speaker and Power Wire Connectors Mixed Mono/Stereo Operation WHAT’S INCLUDED... -
Page 5: Specifications
9 - 16 Volts >150 >20V/µs Up to +18dB @ 40Hz Up to +18dB Boost @30, 36, 44, or 60Hz 12dB/Octave 30-4kHz A600/4 1.0 Amps A1200/4 1.8 Amps Width Height 10-½” 2-¾” 10-½” 2-¾” 4ohm MONO 2 X 150 2 X 300... -
Page 6: Fuse Requirements
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. Amplifier A600/4 A1200/4 Fuse... -
Page 7: Amplifier Status Leds
AMPLIFIER STATUS LEDS The LEDs provide the following indications: 1. Power - These LEDs illuminates the center Precision Power logo background when the amplifier power is turned on. 2. Short - These LEDs behind the PPI logo will flash to indicate a short on the output. -
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: Wiring
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. - Page 10 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 front speaker/remote turn-on PowerLock wrench loosen the screws on the upperside of the connector. Insert the front speaker leads into the end and secure with the hex wrench.
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Page 11: Ground Wiring
Rear Speaker POWERLOCK Connector 2mm hex wrench Left Speaker - Left Speaker + Right Speaker + Right Speaker - For the rear channels, locate the four terminal speaker PowerLock connector. Using a hex wrench loosen the screws on the upperside of the connector. -
Page 12: Charging System
CHARGING SYSTEM If your 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 both. You should also check the condition and current capacity of the stock battery negative cable and connections, and replace or upgrade as necessary. -
Page 13: Power Wire Size
load, double its 4 ohm RMS rating. These amplifiers will effectively double their power at this load. 1000W X 1.5 X2 = 3000 watts 3000W = 250 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 grand total. -
Page 14: Power Lock Connectors
POWER LOCK CONNECTORS Once you have run both the power and ground wires, then 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 connector (supplied). -
Page 15: Mixed Mono Output
suitable subwoofer or center channel. Deriving the mono channel is accomplished by using the Left Channel Positive wire (L+) as the positive speaker wire and the Right Channel Negative wire (R-) as the negative speaker wire. Note: It is important that a minimum 4 ohm impedance is observed. If the impedance drops below 4 ohms while the amplifier is wired in the bridged configuration, the amplifier’s protection circuitry may engage. -
Page 16: A600/4 Front Plate Diagram
A600/4 FRONT PLATE DIAGRAM 1. Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums for proper amplifier cooling. 2. Rear Speaker Connector: Speaker PowerLock connector. 3. Front Speaker/Remote Connector: Speaker PowerLock connector. 4. QBASS Level Control: Controls bass boost, centered at 40Hz with up to 18dB of boost. - Page 17 12. Rear Input INT/EXT Switch: Select the INT position if you want to use the internal signal path from the front crossover for the rear input, or the EXT position to use the external rear RCA input. 13. Source HP/LP/FULL Switch: Select the desired setting. HP/LP/FULL for the internal signal from the front channel to the rear channel when not using an external rear RCA input.
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Page 18: A600/4 End Plate Diagram
2. Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums for proper amplifier cooling. A1200/4 FRONT PLATE DIAGRAM 1. Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums for proper amplifier cooling. 2. Rear Speaker Connector: Plug in the PowerLock connector here. - Page 19 4 & 5. QBASS 1 and QBASS 2 Freq.: Use these switches, QBASS 1 and QBASS 2 to program the QBASS PLUS circuit frequency. 6. -12dB Attenuation Switch: Push this switch ‘IN’ for high voltage input (4V-12V) capability. This button must be pushed ‘IN’ for use with speaker level input on common ground head-units or for high voltage line drivers.
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Page 20: A1200/4 End Plate Diagram
HP/LP/FULL for the internal output signal of the RCA output. Note: See the next section for the rear panel view of this endplate. A1200/4 END PLATE DIAGRAM 1. Power/Ground PowerLock : After you have securely connected your power and ground wires, plug in the Power/Ground PowerLock connector here. -
Page 21: 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 22: A600/4, A1200/4 Block Diagram
A600/4, A1200/4 BLOCK DIAGRAM INPUT ATTENUATION INPUT ATTENUATION... -
Page 23: Advanced Instrumentation Input
ADVANCED INSTRUMENTATION INPUT The Advanced Instrumentation Input has been incorporated from the legendary Precision Power isolates the chassis ground from the audio circuit of the amplifier and 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. -
Page 24: Qbass/Qbass Plus Specifications
This boost control can be mounted in the dash and will supersede the boost control on the amplifier endplate. QBASS PLUS On the A1200/4 amplifier, we’ve taken bass control to a higher level with QBASS PLUS . The two QBASS... - Page 25 QBASS Settings Freq. 30Hz 36Hz 44Hz 60Hz CAUTION: QBASS PLUS strong subwoofer section. +18dB is a tremendous amount of bass boost and may damage your speakers or create excessive distortion if abused. The optional QBASS REMOTE mounted in the dash and will supersede the boost control on the endplate.
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Page 26: Tc-X Crossover
HP/LP/FULL, your new amplifier allows independent selection of frequencies from 30Hz- 4kHz (see Crossover Detent Chart in this guide). A600/4, A1200/4 Front - 12dB/Octave, Detented High Pass 30Hz-4kHz Rear - 12dB/Octave, Detented High Pass; HP/LP/FULL RCA Outputs - 12dB/Octave, Detented High Pass;... -
Page 27: Crossover Detent Chart
CROSSOVER DETENT CHART Detent # Low Pass High Pass Frequency (Hz) Frequency (Hz) @ -3dB 1076 1428 1700 2436 2830 2980 @ -3dB 1036 1144 1300 1504 1812 2196 2840 4116 4540 4728 4728... -
Page 28: Input Combine
INPUT COMBINE Your multi-channel 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 Rear Input INT/EXT switch on the amplifier endplate to route the front signal to the rear channels as well. -
Page 29: Troubleshooting
Thermal Protection engaged. The amplifiers will turn off and after a minute or so will come back on (the status LEDs will extinguish). In this case, ensure that there is nothing blocking the normal convection airflow of the amplifier. No obstruction should be within 2”... - Page 30 LIMITED TWO YEAR CONSUMER WARRANTY: Directed Electronics 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.