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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. speaker requirements Each channel of your PowerPlateTM can easily drive 2W speaker loads when used in the stereo mode. When a channel-pair is bridged, the recommended minimum load impedance is 3W for subwoofer use, and 4W for full range operation. Although operation with lower impedances is not likely to cause immediate damage to the internal circuitry, the unit will most likely overheat, causing the thermal protection circuitry to shut down the amplifier. When the chassis cools down, normal operation will resume. Continuing to operate the amplifier under these conditions is not recommended and will reduce its life expectancy. Most speakers designed for car audio operation are 4W impedance. Connecting two such speakers in parallel will result in a 2W impedance load as seen by the amplifier. Some a/d/s/ sub- woofer models feature a dual 4Wvoice coil design. Connecting these voice coils in parallel will result in a 2W nominal impedance which is not recommended for use with bridged channels of your PowerPlateTM. system configurations All a/d/s/ PowerPlatesTM provide extensive features which make a variety of system configurations possible. It is not feasible to cover all of the possibilities within the few pages of this manual. There are a few system configurations, however, which are extremely popular when used alone or as a "building block" of a larger more elaborate system. Please review systems 1 through 4 described below for suggestions on how to configure the most popular combinations. Larger systems may be built from a combination of the simpler building blocks as shown in systems 5 and 6. button is disengaged control is non-operational button is engaged control is operational P450 system diagrams System 1 - P450 used in 4-channel mode with front and rear full range speakers. System 2 - P450 used in 2-channel bridged mode with full range speakers. 5 22 System 3 - Two P450’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 and the rear output for the second P450. 21 6 System 1 – P650 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 used in 6-channel mode. Channels 1/2 are high-passed for front speakers. Channels 3/4 are high-passed for midrange speakers, and channels 5/6 are low-passed for subwoofers. 7 20 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. Using a high signal level from the source and a low input sensitivity setting on the amplifier will keep the background noise levels of the system low. The following procedure will help you get the widest dynamic range from your system: 1. Start with the input level controls of your PowerPlateTM at the minimum (counterclockwise) position. 2. Set the tone controls and any controls on any equalizers or other signal processors to their flat or bypassed positions. 3. Set the input and output level controls, if any, on any associated equipment such as equalizers or outboard electronic crossover as recommended by their manufacturers. 4. Select a well recorded CD or Tape containing material recorded at a fairly high level. Musical content is not important except that the music chosen should be recorded such that any system distortion can be clearly heard, not masked by musical cont...

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