The following is a basic formula to be used as a guide to determine current draw. A50% amplifier efficiency rating is used as an average. Your new PCXamplifier is more efficient than most other amplifiers. This formula is to be used as a guideline. Using wire of a larger gauge can only improve the current transfer of your system. Do not use smaller gauge wire.

Total Amplifier RMS output x 2 = Total Input Wattage from car

Total Input Wattage = Current Draw (in Amps)

Supply Voltage

Example: A POWERCLASS™ PCX 280 amplifier has two channels at 80w per channel RMS rating into 4 Ohms (80 x 2 = 160).

You would use the formula in the following way:

160W x 2 = 320W

320W = 26.6 Amps Total current draw.

12V

If the same amplifier is driven into a 2 Ohm stereo or 4 Ohm mono load, double it's 4 Ohm RMS rating. AllPOWERCLASS™ amplifiers will effectively double their power at this load.

160W x 2 x 2 = 640W

640W = 53.3 Amps Total current draw.

12V

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.

Recommended Minimum Gauge

Total Current Draw

(in amps) Up to 4ft. 4 to 7ft.

Length Of Wire To Be Run

7 to 10ft. 10 to 13ft. 13 to 16ft. 16 to 19ft. 19 to 22ft. 22 to 28ft.

25-50

10

10

50-65

8

8

65-85

6

6

85-105

6

6

105-125

4

4

125-150

2

2

150-200

0

0

200-250

00

00

 

 

 

8

6

4

4

4

2

0

00

8

4

4

2

2

2

0

000

6

4

2

2

2

0

00

000

6

4

2

2

0

0

00

000

4

4

2

2

0

0

00

000

4

2

0

0

0

00

000

0000

NOTE: The ground wire must be the same gauge or larger as the power wire.

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Precision Power PCX 280, PCX 250 manual Recommended Minimum Gauge

PCX 250, PCX 280 specifications

Precision Power is a renowned name in the audio industry, offering high-performance amplifiers that cater to both casual listeners and audiophiles. Two standout products in their lineup are the PCX 280 and PCX 250 amplifiers. Each model is designed to deliver exceptional sound quality, impressive power output, and innovative technologies that elevate the listening experience.

The PCX 280 is a powerhouse amplifier, capable of delivering up to 280 watts of peak power. This amplifier is designed to drive high-performance speakers and subwoofers, making it ideal for those seeking a dynamic audio experience. The PCX 280 features a Class D amplifier topology, which ensures high efficiency and low heat generation. This allows users to enjoy long listening sessions without the worry of overheating or distortion. Additionally, the PCX 280 incorporates a built-in crossover network, enabling precise frequency separation between different audio components for a clearer soundstage.

On the other hand, the PCX 250 is a slightly more compact but equally powerful option, with a peak output of 250 watts. This amplifier is perfect for smaller audio systems or casual listening environments, providing ample power without compromising sound quality. Like the PCX 280, the PCX 250 uses Class D technology, ensuring efficiency and minimal power loss. Its design also features a variable gain control, allowing users to fine-tune the output level to match their specific needs.

Both models showcase Precision Power's trademark quality and attention to detail. The robust construction of the PCX amplifiers includes a sturdy chassis designed to reduce vibrations and unwanted resonance, further enhancing audio clarity. The intuitive interface, complete with well-placed controls and LED indicators, allows users to easily adjust settings and monitor performance.

In terms of connectivity, both amplifiers offer versatile input options, including RCA and speaker-level inputs, making them compatible with various audio sources. These amplifiers also feature durable binding posts for speaker connections, ensuring a secure connection that maximizes sound transmission.

In summary, the Precision Power PCX 280 and PCX 250 amplifiers are exceptional choices for anyone seeking superior audio performance. With their advanced Class D technology, solid construction, and user-friendly features, both models provide powerful and clear sound, making them ideal companions for music enthusiasts and audiophiles alike. Whether you opt for the powerhouse PCX 280 or the compact yet capable PCX 250, you can trust that you're investing in quality audio equipment designed to enhance your listening experience.