Input Sensitivity - The PAR-224's radio and CD inputs have independently adjust- able input sensitivity (gain). The gain adjust controls are accessible through the bottom panel. The diagram below shows the gain provided at various control settings. (see figure 1)

77

4

1

31.5

2

Input Gain Control

Figure 1

Input Clip (overload) LED - This indicator lights when the PAR-224's internal circuitry is overdriven due to improper adjustment of the PAR's input gain controls or excessive levels coming from the head unit. If the input clip indicator lights while music is playing, the input gain controls must be set lower (turned counter- clockwise) or source unit levels must be lowered until the indicator does not come on.

Output Clip LED - This indicator can be used to show when the overall system has reached it's maximum power level. It monitors the PAR-224's output level, which relates to amplifier output. The level at which the indicator activates is adjustable to match amplifier's maximum level. The control is accessible through the bottom panel. The diagram below shows the sensitivity match at various control settings. (see figure 2)

.5V

5V

1V

4V 2V

3V

Clip Level Control

Figure 2

Note that if an electronic crossover or other accessory is connected between the PAR-224 and an amplifier, the gain of the crossover / accessory will affect clip indicator setting. A "fine tuning" adjustment should be made so that the LED comes on just at the volume level where distortion becomes audible (the next section details the procedure to adjust this control). The indicator

is peak responding, and once triggered it will stay on long enough to be noticed no matter how briefly the maximum level is exceeded. This way, the user is warned of the possibility of distortion before it becomes serious.

System Gain Adjusts

In order to achieve maximum signal-to-noise performance from a high quality stereo system, it is desirable to use high level signals wherever possible in the inter-connecting cables. High signal levels will reduce the effect of noise induced into these cables. The peak level of audio signal is usually determined by the clipping level of electronic components. The following procedure should be used as a guide after the system installation is complete and ready for final adjustment.

Adjustment of head unit output and PAR-224 input:

1.Adjust PAR-224 volume control fully counterclockwise

2.Adjust head unit volume to 1/2 - 3/4 of maximum

3.Adjust, if available, head unit line output level to maximum

4. Set PAR-224 selector switch to radio.

5.Adjust all PAR-224 input gains fully counterclockwise.

6.Play a high quality cassette or FM station if a cassette is unavailable

7.Adjust one of the radio input gains clockwise until input clip light comes on. Then adjust counterclockwise about 10 degrees. Repeat this step for the other channel.

8.Set PAR-224 selector switch to CD position and repeat 2 - 7 for alternate source unit.

Adjusting amplifier input gains

1.Adjust amplifier gains to minimum sensitivity. (fully counterclockwise)

2.Adjust the volume knob on the PAR-224 fully clockwise.

3.Increase the gain of the amplifier until the onset of audible distortion.

4.Repeat step 3 for any remaining amplifiers in the system.

Adjusting the output clip indicator

1.Adjust the output clip indicator control fully clockwise.

2.Play system at maximum volume which should be approaching audible distortion.

3.Adjust the output clip indicator counterclockwise until the indicator comes on.

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Precision Power PAR224 manual Adjustment of head unit output and PAR-224 input, Adjusting amplifier input gains

PAR224 specifications

The Precision Power PAR224 is a remarkable amplifier that stands out in the automotive audio industry due to its advanced features, technologies, and robust performance. Designed specifically for car audio enthusiasts who demand high-quality sound, this amplifier delivers a powerful and clear audio experience that enhances any vehicle's sound system.

One of the standout features of the PAR224 is its impressive power output. With a maximum power rating of 1200 watts, this amplifier offers sufficient power to drive subwoofers and speakers seamlessly. It features a two-channel configuration, which allows for versatile installation options, including bridging capabilities to power larger systems. The ability to connect multiple speakers without distortion ensures that users can enjoy rich, immersive sound.

Moreover, the PAR224 is equipped with advanced circuit protection technologies. These technologies prevent overheating and short circuits, significantly extending the lifespan of the amplifier. The built-in protection circuits monitor the temperature and automatically adjust the performance to prevent damage, creating a reliable option for those who prioritize durability and safety in their audio systems.

The amplifier also boasts high-quality components, including precision capacitors and heavy-duty terminals. These components contribute to efficient power transfer and excellent sound quality, ensuring minimal signal loss. Additionally, the amplifier features adjustable crossover settings, allowing users to fine-tune the sound according to their preferences. Whether opting for a low-pass filter for subwoofers or a high-pass filter for speakers, users can achieve optimal sound clarity and definition.

Another notable characteristic is the sleek design of the PAR224. Its compact size allows for easy installation in various vehicle types without compromising on performance. The stylish aluminum chassis not only enhances the aesthetic appeal but also aids in heat dissipation, further improving longevity.

In summary, the Precision Power PAR224 amplifier is a leading choice for car audio enthusiasts, offering an impressive combination of power, durability, and sound quality. Its advanced features, such as circuit protection, adjustable crossovers, and high-quality components, ensure that users receive exceptional audio performance. With its stylish design and reliable operation, the PAR224 is set to transform any car audio system into an immersive sound experience.