Instruction/ maintenance manual of the product PCX 280 Precision Power
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Precision Power 9235 South McKemy Street, T empe, Arizona 85284 www.precisionpower.com 8900-4005 PC X 250 PC X 280.
Power Bandwidth 10 Hz - 50 kHz T otal Harmonic Distortion < 0.02 % S/N Ratio > 110dB Input T opology Instrumentation Input Sensitivity 150mv - 12 Volts RMS Input Impedance 10k Ohms Load Impedanc.
Y ou will need to install an in-line fuse or circuit breaker in the power wire within 18" of the battery. This fuse or circuit breaker is to protect your vehicle from fire in case the power wire shorts to the vehicle body . If you are only using one amplifier, use the fuse rating indicated in this chart.
Before beginning, disconnect the negative (-) terminal of the battery prior to working on the positive (+) terminal to prevent a short to ground. This is important, unless you want to spend the rest of your life with a nickname like "Sparky," or "Smokey.
Once you have run both the power and ground wires, it's time to connect the cables to the amplifier. Cut off excess wire and, using wire strippers, strip the ends of the power and ground cables approximately 1/4 inch. Locate the Power Lock power and ground connector (supplied).
9 1. Adjust all amplifier input gain controls to just above minimum sensitivity (fully counterclockwise). 2. Using the cleanest music source (CD) playing, turn up the head unit source volume until you can hear distortion. Now turn it down a bit until you cannot hear the distortion ( u s u a l l y just below full volume).
All two-channel PCX ™ amplifiers are capable of being bridged into a 4 ohm mono output without switches or bridging modules. This feature permits the creation of a mono channel for a subwoofer or center channel.
1. Cooling Plenums: Maintain a minimum 2” clearance around cooling plenums for proper amplifier cooling. 2. QBASS™ Control: Add more bass to the system by turning this control clock - wise to boost the selected QBASS™ frequency up to 18dB. 3. QBASS™ Remote Port: Port to plug in the optional QBASS Plus™ Remote knob.
I f your grand total current draw is over 100 amps (or total output power is over 600 watts) , you are probably exceeding the capability of your charging system. Dimming lights and fluctuating voltage are solid indicators that you need to upgrade your alternator, battery, or both.
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 P C X ™ a m p l i f i e r is more efficient than most other amplifiers. This formula is to be used as a guideline.
QBASS™ (PCX 250) Up to 12dB of Boost centered at 40Hz, with a Q-Factor of 2. Optional QBASS REMOTE™ : This boost control can be mounted in the dash and will supersede the boost control on the endplate.
Do not attempt to service P r e c i s i o n P o w e r products yourself. Performing exploratory surgery on your audio equipment yourself will void the warranty. Many parts of your P r e c i s i o n P o w e r product are custom built to our specifications.
An important point after buying a device Precision Power PCX 280 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Precision Power PCX 280 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Precision Power PCX 280 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Precision Power PCX 280 you will learn all the available features of the product, as well as information on its operation. The information that you get Precision Power PCX 280 will certainly help you make a decision on the purchase.
If you already are a holder of Precision Power PCX 280, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Precision Power PCX 280.
However, one of the most important roles played by the user manual is to help in solving problems with Precision Power PCX 280. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Precision Power PCX 280 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
