Directed Audio owner manual Front Panel CONNECTIONS/CONTROLS A502-A404

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FRONT PANEL CONNECTIONS/CONTROLS A502-A404

1.RCA Input Jacks - Accepts line level outputs from head units or signal processors at voltages between 150mV and 7.5 volts.

2.RCA Output Jacks - These pass through RCA jacks can be used to send the input signal to a second amplifier.

3.Gain Control - Controls amplifier sensitivity and is used to match the input level of the amplifier to the output level of the signal source.

4.Crossover Selection Switch - Controls the type of filter for the on- board active crossover. FLAT does not attenuate any frequencies and is for full-range speaker systems. HPF attenuates low frequencies and is used for mid-range speakers and tweeters. LPF attenuates high

frequencies and is used for subwoofers speakers.

5.Bass EQ Switch - Adds an additional 8 db of boost to the speaker output when on.

6.Light Bar/Fan - Allows connection of an optional LED light bar or optional additional cooling fan for the amplifier.

7.Status LED - Will illuminate GREEN to indicate the amplifier is on and operating normally, and will be illu- minated RED if the amplifier shuts down due to short circuit, DC offset, or overheating detected by on- board protection circuitry.

8.Input Mode Switch - Selects 2 or 4 channel operation (model A404 only).

FIGURE 1—AMPLIFIER CONNECTIONS A502 FRONT

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© 2004 Directed Electronics, Inc

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Contents A502 A404 Congratulations Table of ContentsLimited TWO-YEAR Consumer Warranty „ Selectable 12dB/octave two-way crossover FeaturesInstallation Guidelines Directed Electronics, Inc Frequencies and is used for subwoofers speakers Front Panel CONNECTIONS/CONTROLS A502-A404Amplifier Connections A404 Front Rear Panel ConnectionsFactory ground points Speaker Wiring Diagrams A502 Stereo Operation 2 Channel top view Speaker Wiring Diagrams A404Stereo Operation 4 Channel top view Channel Stereo with Mono Sub top view Crossover Settings and Gain Adjustment Directed Amplifier-VARAD Cross Reference Chart LED Tube Installation OptionalCEA Specifications Bridged 4 Ohm SpecificationsDirected Electronics, Inc Vista, California

A404, A502 specifications

Directed Audio, a pioneer in the car audio industry, has garnered attention with its innovative models like the A502 and A404. These two amplifiers showcase a blend of power, clarity, and advanced technology, aimed at enhancing the in-car audio experience for enthusiasts and casual listeners alike.

The Directed Audio A502 is a two-channel amplifier that delivers impressive performance with 50 watts RMS per channel at 4 ohms, offering a punchy sound without sacrificing fidelity. It features a high and low-pass crossover, allowing users to tailor their audio output to their specific setup, whether they're driving high-frequency speakers or deep bass subwoofers. The A502 is built with a sleek aluminum chassis that not only provides durability but also enhances the heat dissipation, ensuring reliable performance during extended use. The amplifier's compact size makes it an excellent choice for various vehicle installations, fitting effortlessly in tight spaces without compromising on sound quality.

On the other hand, the Directed Audio A404 is a four-channel amplifier designed for those looking to elevate their audio system further. It boasts 50 watts RMS per channel at 4 ohms and can be bridged to power subwoofers with 100 watts RMS at 4 ohms. This versatility makes the A404 a perfect match for full-range speakers and subwoofer combinations, enabling users to build a comprehensive audio system tailored to their listening preferences. Similar to the A502, the A404 includes selectable high and low-pass filters, expanding its adaptability.

Both models leverage Class D amplification technology, ensuring efficient power usage that results in less heat generation compared to traditional Class A/B amplifiers. This efficiency not only enhances performance but also contributes to a longer lifespan for both the amplifier and the audio components connected to it. Moreover, Directed Audio amplifiers come equipped with short circuit and thermal protection circuitry, safeguarding against potential damages during operation.

In terms of design, both amplifiers reflect a modern aesthetic with their clean lines and a minimalist profile. Their easy-to-read terminals and layout simplify installation, making them accessible for DIY enthusiasts. With a reputation built on quality and performance, Directed Audio A502 and A404 stand out in the competitive landscape of car audio, catering to diverse needs while delivering exceptional sound quality that transforms any driving experience into a remarkable audio journey.
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