Crossover Settings and Gain Adjustment

Your Viper 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 FLAT. If the amplifier is driving your subwoofers, set the switch to LPF, and for mid-bass/midrange output, set to HPF.

The crossover frequency control needs to be adjusted to suit your particular system. For subwoofer applications, try to keep the setting low enough to prevent the 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 adjust- ment, 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 ampli- fier operation. For full-range and simultaneous stereo/mono bass applications, 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 amplifier 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 distortion, slowly raise the gain of the amplifier 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.

The same procedure should be used for adjusting the amplifier when the on-board crossover is set to LPF or HPF, 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!

400.2 specifications

Directed Electronics 400.2 is a premium automotive security system that offers advanced protection for vehicles, merging state-of-the-art technology with user-friendly features. As part of Directed Electronics' esteemed legacy in vehicle security, the 400.2 model stands out for its robust characteristics designed to deter theft and unauthorized access.

One of the notable features of the 400.2 is its two-way communication system. This allows for bidirectional signal transmission between the vehicle and the remote key fob, enhancing convenience for the user. When the vehicle is armed or disarmed, the remote provides instant feedback through lights or tones, giving the vehicle owner peace of mind regarding the status of their security system.

The Directed Electronics 400.2 incorporates a powerful shock sensor that detects any impact or tampering attempts on the vehicle. This feature is crucial as it can trigger an alarm, providing an audible deterrent against potential thieves. Additionally, the system includes a built-in siren that emits a loud, startling noise to draw attention and discourage intruders.

Another significant characteristic of the 400.2 is its capability to integrate with various vehicle systems. It functions seamlessly with many types of vehicles, allowing for a customizable security setup that meets specific requirements. The system supports multiple zones of protection, which means that different areas of the vehicle can be monitored independently. This flexibility ensures comprehensive coverage.

The Directed Electronics 400.2 also features a remote start option, enabling users to start their vehicle from a distance. This function not only enhances convenience but also allows the vehicle to warm up or cool down before the driver gets in, providing added comfort in varying weather conditions.

In terms of installation, the system is designed to offer a straightforward setup process. Directed Electronics provides clear instructions, making it easier for both professional installers and DIY enthusiasts to get the system up and running effectively. The compact design of the module means it can be installed discreetly within the vehicle.

Overall, the Directed Electronics 400.2 stands as a hallmark of automotive security technology, combining user-friendly features, extensive compatibility, and advanced safety measures that help protect vehicles from theft and damage. With its innovative approach to vehicle protection, the 400.2 remains a top choice for those seeking reliable automotive security solutions.