Recommended Minimum Gauge

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 PCX™ amplifier 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 RMS output x 2 = Total Input Wattage

Total Input Wattage = Current Draw (in Amps)

Supply Voltage

Example: A POWERCLASS™ PCX 1500 amplifier has two channels at 200w per channel RMS rating into 4 Ohms (500 x 1 = 500).

You would use the formula in the following way:

500W x 1 = 500W

500W = 41.6 Amps Total current draw.

12V

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

500W x 1 x 2 = 1000W

1000W = 83.3 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.

Your New! PCX™ amplifier has a TC-XCrossover (Total Control X-over©) (See page 19 for crossover Detent Chart). 12dB per octave phase correlated crossover built in to provide superior system flexibility without the added expense and installation of an outboard crossover. The speaker outputs of your amplifier are high-pass, low-pass, or all-pass according to the HP/LP/Full switch on the front endplate. You would choose low pass (switch middle) to use this amp for sub- woofers, choose high pass (switch left), or full (switch right) to use this amp for full range speakers.

The RCAoutputs are controlled by a separate HP/LP/Full switch, and are always independent of the speaker output crossover. As well as being able to independently select HP/LP/Full, your new PCX™ amplifier allows independent selection of frequencies from 30-4kHz (See page 19).

NOTE: The System Diagrams beginning on page 18 show several ways to use the virtually unlimited PCX™ amplifiers internal crossovers in your system.

PCX 1250

Front - 12dB/Octave, Detented; HP/LP/Full; 30-4kHz

Rear - 12dB/Octave, Detented; HP/LP/Full; 30-4kHz;

Subsonic - 12dB/Octave, Detented; High Pass; 5-80Hz

QBASS - on Front Channel - up to 12db boost @ 40Hz.

PCX 1500

Front - 12dB/Octave, Detented HP/LP/Full; 30-4kHz

Output - 12dB/Octave, Detented; HP/LP/Full; 30-4kHz

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.

Subsonic - 12dB/Octave Detented; High Pass; 5-80Hz

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
300-up	000	000

000

0000

000

0000

000

0000

000

0000

000

0000

00000

QBASS PLUS - on Front Channel - up to 18db boost @ 30, 36, 44, 60Hz.

NOTE: The ground wire should be the same gauge as the power wire.

Precision Power PCX1250 manual Recommended Minimum Gauge

Models: PCX1250

Recommended Minimum Gauge