Crossover Settings and Gain Adjustment

Your Directed Audio power amplifier needs to be adjusted carefully to achieve maximum performance. These are some guidelines to follow when fine-tuning the amplifier.

For full-range and simultaneous stereo/mono bass applications, the crossover selection switch should be set to FULL. If the amplifier is driving your subwoofers, set the switch to LOW, and for mid-bass/midrange output, set to HIGH.

The crossover frequency control needs to be adjusted to suit your particular system. For subwoofer applications, try and keep the setting low enough to prevent image smearing (you should not be able to hear male voices from the subwoofer) but not so low as to create a gap between the subwoofer and the mid-bass/midrange speakers. For mid-bass/midrange settings, try to keep the setting low enough to keep your sound stage in front of you, without overdriving the speaker. It will be to your advantage to spend some extra time with this adjustment, listening to familiar music or system set-up discs to achieve the kind of musical reproduction that you prefer.

The gain adjustment allows you to set proper signal match for clean, quiet amplifier operation. For full-range and simultaneous stereo/mono bass appli- cations, start by playing some music you are familiar with. With the gain adjustment on the amplifier in the

middle of its rotation, bring up the volume on your head unit to the 3/4 volume setting or until you start to hear distortion or clipping. If you hear distortion before you reach the 3/4 volume setting of your head unit, reduce the gain setting on the ampli- fier and start to raise the head unit volume again. When you can listen to the music at or slightly above 3/4 on your head unit without audible distor- tion, slowly raise the gain of the ampli- fier until distortion is heard, then back off the gain until the distortion is not audible. This setting will allow you to reach full output with all but the quietest of source material, while avoiding excessive noise in the system.

Note: Remember that the Directed ESP® amplifiers use a digital gain control with a finite number of adjustment steps. A very small adjustment may not cause any audible change in level.

The same procedure should be used for adjusting the amplifier when the on board crossover is set to LOW or HIGH, but you will also have to take into consideration the effect that gain adjustment has on system frequency response and imaging. Again, plan on spending some time with music that you know getting the gain and crossover settings the way you like. Test discs and analyzers may help with this process, but in the end it's your ears that count - listen to the music!

A802, D2205, A1004 specifications

Directed Electronics has established itself as a leader in the automotive electronics industry, offering a wide range of products designed to enhance vehicle security and convenience. Among their notable offerings are the D2205, A802, and A1004, which showcase cutting-edge technologies and features designed to protect vehicles effectively.

The Directed Electronics D2205 is a premium remote start system that combines convenience with advanced security features. This system boasts a high range of operation, allowing users to start their vehicles from a significant distance, making it perfect for chilly mornings or hot summer days. One of its standout features is the two-way communication capability, which provides feedback to the user about the vehicle’s status, such as whether the engine is running or if the doors are locked. The D2205 also includes various programmable features that allow users to customize their experience, including the ability to set engine runtime, adjust remote start settings, and even add additional functionalities like keyless entry or trunk release.

The A802 model is designed primarily for alarm and security. It integrates several advanced technologies such as a shock sensor, which detects any unauthorized tampering or movement, triggering audible alerts to deter potential thieves. The A802 also includes a built-in interface for remote start integration, meaning users can combine the security features with remote ignition functionality. Its ease of installation, coupled with support for a wide range of vehicles, makes it a versatile choice for enhancing automotive security. The A802's remote key fob allows users to arm and disarm the system from a distance, adding an extra layer of convenience to vehicle access.

Finally, the Directed Electronics A1004 represents a robust solution in the realm of vehicle security systems. This model features a compact design, making it easy to install without compromising on performance. It is equipped with multiple zone protection, offering a comprehensive security solution that includes perimeter and motion sensors. The A1004 also facilitates passive or active arming options, providing users with flexibility in how they secure their vehicles. Additionally, this system can be integrated with other Directed Electronics products, enabling a more cohesive security approach tailored specifically to user needs.

In summary, Directed Electronics has developed exceptional products like the D2205, A802, and A1004, which reflect their commitment to innovation and quality in vehicle security and convenience. Each model showcases advanced technologies and features aimed at enhancing user experience while ensuring maximum vehicle protection.