Table of Contents
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table of contents
introduction
Although it may be hard to remember, back in the 1970's, car audio as we now know it didn't really exist.
Sure, music lovers could buy a cassette or 8-track tape deck and some 6" x 9" three-way speakers.
Advanced stereo buffs might even add a "power-booster" to increase output too as much as 12 watts
RMS! But none of this really delivered the power to cut through road noise with sound quality that
compared with the best home audio. Not until 1979 that is, when a/d/s/ introduced the revolutionary
PowerPlate™ P100 amplifier and 300i 2-way plate loudspeakers. Aesthetically, the P100 introduced the
low profile design which has been an a/d/s/ trademark to this day. Technologically, the P100 combined a
high efficiency switching power supply with a state-of-the-art, discrete high-current stereo power
amplifier. For the first time, a car audio system existed with the musical integrity and dynamic range that
made you want to take long drives to nowhere, just to listen to the music. High quality car audio was
born, and the original a/d/s/ PowerPlate™ P100 made it happen.
The latest improvements to the PowerPlate™ line-up include increased heatsink area to facilitate higher
power output, and fully balanced high-level inputs compatible with any source. The amplifier you have
purchased is an enhancement of the respected P-series multichannel amplifiers. In this version, we have
improved upon the already acclaimed sound quality by addressing internal details, and upgrading selected
components to incorporate the latest technology which was not available when the P-series was originally
designed. Selected low-noise, high-speed op amps are used in critical circuits. Class-A biasing is used
throughout the voltage-gain and active crossover stages. Numerous modifications and "tweaks" were
also performed which improve the power supply dynamics and reduce noise. These changes improve
transparency and dynamic linearity, resulting in a smoother and more detailed top-end, tighter bass, more
explosive dynamic contrasts, and virtually holographic imaging. Left intact are the P-series unequalled
flexibility, high efficiency and superb reliability. These, along with multichannel design, are fundamental in
the a/d/s/ approach to systems engineering, which makes achieving true high fidelity reproduction simple
and predictable in any installation.
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Table of Contents
Related Manuals for ADS P450.2
Summary of Contents for ADS P450.2
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Page 1: Table Of Contents
13-14 internal signal routing 14-15 multi-cross™ crossover and configurations 16-17 AC502 operation tuning 18-19 P450.2 block diagram P650.2 block diagram P850.2 block diagram troubleshooting 23-24 specifications warranty information introduction Although it may be hard to remember, back in the 1970’s, car audio as we now know it didn’t really exist. -
Page 2: About This Manual
about this manual To get the most from your a/d/s/ PowerPlate™, we recommend that you have the installation performed by your qualified authorized a/d/s/ dealer. If this unit is installed by your dealer, we will extend the warranty to two years instead of the standard one-year. However, if you feel that you have the necessary skills and prefer to perform the installation yourself, this manual will guide you through the process of installation and set-up. -
Page 3: Warning And Tips
warnings and tips Always disconnect the battery ground wire before doing any work on your vehicle. Reconnect the cable only after the installation is complete and the wiring has been checked to make sure that there are no problems. If your radio features a code type security system, be sure you know the code before disconnecting the battery! Your a/d/s/ PowerPlate™... -
Page 4: System Planning
system planning Proper system planning is the best way to maximize your PowerPlate’s™ performance. By planning your installation carefully you can avoid situations where the performance or the reliability of your system is compromised. Your authorized a/d/s/ dealer has been trained to maximize your system’s sonic potential. Your a/d/s/ dealer is a valuable resource in helping you with your system design and installation. - Page 5 P450.2 system diagrams System 1 - P450.2 used in 4-channel mode with front and rear full range speakers. front left satellite rear left satellite System 2 - P450.2 used in 2-channel bridged mode with full range speakers.
- Page 6 System 3 - Two P450.2’s, one is used to drive front tweeters and midrange drivers, the second is used in 2-channel bridged mode for subwoofers. Subwoofer level can be controlled by using the source’s front output for the first P450.2 and the rear output for the second P450.2.
- Page 7 P650.2 system diagrams System 1 - P650.2 used in 6-channel mode. Channels 1/2 are high-passed for front speakers. Channels 3/4 are high-passed for rear speakers. Channels 5/6 are low-passed for subwoofers. Although shown with 4-channels of input, the source unit can be either 2- or 4-channel. System 2 - P650.2 used in 6-channel mode.
- Page 8 System 3 - P650.2 used in 3-channel mode. Channels 1/2 and 3/4 are high-passed and bridged for front speakers. Channels 5/6 are low-passed and bridged for a single subwoofer.
- Page 9 P850.2 system diagrams System 1 - P850.2 used in 6-channel mode. Channels 1/2 are high-passed for front speakers channels 3/4 are high-passed for rear speakers, and channels 5/6 and 7/8 are bridged low-pass for subwoofers. Although shown with 4-channels of input, the source unit can be either 2- or 4-channel. System 2 - The P850.2 is used in 8-channel mode.
- Page 10 System 3 - The P850.2 is used in fully active 8-channel mode. Channels 1/2 are high-passed for front tweeters. Channels 3/4 are bandpassed for front midrange. Channels 5/6 are bandpassed for front midbass. Channels 7/8 are low-passed for subwoofers. The P850.2 is configured for 2-channel input. Note: Optional AC502 can be used in this system to adjust the level of the subwoofers.
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Page 11: Installation
installation Disconnect the battery ground cable. Reconnect the ground cable only after the installation is complete and the wiring has been checked to make sure that there are no problems. If your radio features a code type security system, be sure you know the code before disconnecting the battery! Run a minimum AWG #8 power wire directly from the battery to the PowerPlate™... - Page 12 proper size fuse less than 18" from battery speaker connections for stereo configurations Minimum recommended impedance is 2 stereo. Speaker terminals accept up to AWG #12 speaker wire. speaker connections for bridged configurations Minimum recommended impedance is 4 when bridged to subwoofers and 3 when bridged to full range speakers.
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Page 13: Signal Sources
signal sources Due to the wide input level adjustment range, all a/d/s/ PowerPlates™ can be driven with either a conventional preamplifier drive signal or the amplifier signal from a powered source unit. This makes the PowerPlate™ perfect for upgrading an OEM (Original Equipment Manufacturer) stereo system while retaining the factory installed radio. -
Page 14: Internal Signal Routing
Channels 3-8 can be accessed through the din 3-8 connector by using the optional AC202 RCA to DIN adapter for P850.2 only. DIN ch 3-8 connections: pin 1 ch 6 pin 2 audio signal ground pin 3 ch 4 pin 4 ch 5 pin 5 ch 3... -
Page 15: Internal Signal Routing
internal signal routing con’t Channels 5/6 input switch (P650.2 and P850.2) - selects input from three possibilities. When the switch is in the left position, channels 5/6 receive input from a summed input of channels 1, 2, 3, and 4 RCA input. Channel 5 receives the summed input of channels 1 and 3. -
Page 16: Multi-Cross™ Crossover And Configurations
multi-cross™ crossover configuration xover control 1/2 - The crossover selection switch for channels 1 & 2 has three possibilities: When the switch is in the left position, channels 1 & 2 receive signal from the crossover output of channels 3 & 4. Note: When the switch is in the left position, the output level is controlled by the ch 3/4 level control. - Page 17 multi-cross™ crossover configuration, cont'd xover control 5/6 (P850.2) - The crossover section dedicated for channels 5 & 6 are activated by depressing the switch next to the frequency adjustment control. Both high-pass and low-pass crossovers are infinitely adjustable from 45Hz to 5,000Hz. The high-pass and low- pass sections may be combined to create a bandpass filter.
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Page 18: Ac502 Operation
3/4 crossover. If the 1/2 crossover switch is in the 3/4 position the 1/2 level will also be controlled. You can use P450.2 as a bridged two channel subwooofer amplifier this way. On the P650.2 the AC502 will control the level of the low-pass output of the 5/6 crossover. On the P850.2 the AC502 will control the level of the low-pass output of the 7/8 crossover. - Page 19 adjusting input sensitivity The input sensitivity setting is important to ensure proper performance, low noise levels, and maximum system reliability. As a general rule, components at the "front end" of the system should be set as high as possible with the input sensitivity of the amplifier set as low as possible while still providing adequate volume levels.
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Page 20: P450.2 Block Diagram
P450.2... -
Page 21: P650.2 Block Diagram
a/d/s/ P650.2... -
Page 22: P850.2 Block Diagram
a/d/s/ P850.2... -
Page 23: Troubleshooting
troubleshooting symptom possible cause action to take no output low or no remote turn-on check remote turn-on voltage input output at amplifier and correct as needed fuse blown check power wire integrity and reversed polarity, repair as needed and replace fuse power wires not connected check power wire and ground connections and repair or... - Page 24 symptom possible cause action to take distorted output (cont’d) speakers are blown check system with known working speakers and repair or replace as needed poor bass response speakers wired with wrong check speaker polarity and polarity causing cancellation repair as needed at low frequencies crossover set incorrectly reset crossovers referring to...
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Page 25: Specifications
47 k recommended fuse type P850.2 2 X 40 ATC P650.2 2 X 30 ATC P450.2 2 X 20 ATC crossover section3 ch 1 & 2 high-pass ch 3 & 4 high-pass & low-pass ch 5 & 6 high-pass &... -
Page 26: Warranty Information
warranty information 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.