N o i s e s W h i l e t h e E n g i n e i s O n

A l t e r n a t o r w h i n e :

This noise changes in frequency with engine RPM. Check for:

. Excessive input level setting on the amplifier

. High resistance in cabling or corroded and/or loose connections

. Polarity of the input cables

If the problem persists, check the whines and pops checklist below.

T i c k s / b u z z :

This noise should go faster and slower with engine RPM, but not really change in frequency. This is due to the ignition or the fuel pump.

. Try moving the input cables to avoid contact with the fuel pump or wiring

If the problem persists, check the whines and pops checklist below.

A c c e s s o r y p o p :

This popping noise occurs as the result of turn signals, brake lights, etc. You can try:

. Moving the cables to avoid contact with the wires for the accessories

. Relocating various ground connections

W h i n e s a n d p o p s :

If you have a combination of noises, or if one or more of the problems listed above persists despite efforts to stop the problem, the noise may be caused by one or more of the following problems:

. Excessively high input level setting on the amplifier

. Poor or open shielding, extra long cables or corroded input cables

. Bad connections

. Bad (or high resistance) system ground

. Reversed polarity on audio signal cables

. Poor quality source unit

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Directed Electronics MA4100 I s e s W h i l e t h e E n g i n e i s O n, T e r n a t o r w h i n e, C k s / b u z z
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MA4100 specifications

The Directed Electronics MA4100 is a cutting-edge car audio amplifier that brings dynamic power and superior sound quality to any vehicle's audio system. Engineered with precision, the MA4100 is designed to deliver enhanced audio performance while ensuring reliability and longevity.

One of the standout features of the MA4100 is its high power output. With a maximum power rating of 1000 watts, this amplifier provides impressive amplification for both high- and low-impedance speakers. Its four-channel configuration allows for versatile installation options, making it suitable for driving multiple speakers or subwoofers. The amplifier is capable of a bridged mode, allowing users to combine channels and boost output even further for a robust listening experience.

Equipped with advanced Class D technology, the MA4100 is both efficient and compact. This design minimizes heat production and ensures that the amplifier runs cool even under heavy load. Compared to traditional amplifiers, Class D amplifiers consume less power, making the MA4100 an energy-efficient choice for car audio enthusiasts. This efficiency also translates into smaller size, providing flexibility in installation without compromising on power delivery.

The Directed Electronics MA4100 features a built-in crossover and adjustable gain settings, allowing users to tailor the sound output to their preferences and vehicle acoustics. The variable high-pass and low-pass filters enable users to control which frequencies are amplified, optimizing the audio experience.

Furthermore, the MA4100 is designed with durability in mind. With a robust build quality, including a heat-sink design that facilitates efficient cooling, it is built to withstand the rigors of automotive environments. The amplifier is also equipped with protection circuitry to safeguard against overheating, short circuits, and overloading, ensuring long-term performance and reliability.

In terms of installation, the MA4100 includes high-level inputs that make it compatible with factory audio systems, allowing for easy integration without requiring extensive modifications. With its combination of power, efficiency, and sound quality, the Directed Electronics MA4100 is an excellent choice for audiophiles looking to upgrade their car's audio system. Whether for daily commuting or road trips, the MA4100 elevates the in-car listening experience to new heights.
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