Directed Audio 600/4 manual Crossover Settings and Gain Adjustment

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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 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!

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© 2003 Directed Electronics, Inc

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Contents Model 600/4 Directed Electronics, Inc Table of Contents CongratulationsLimited TWO-YEAR Consumer Warranty Features „ Dual switchable 8 dB bass EQ func- tionThreshold at which hearing loss may result „ Summed stereo full-range RCA output jacksInstallation Guidelines Directed Electronics, Inc Front Panel CONNECTIONS/STATUS LED Inputs of the amplifierRear Panel Connections Amplifier Connections 600/4 Rear TOP Panel Features TOP Panel ControlsSpeaker Wiring Diagrams Two Channel StereoSimultaneous Crossover Settings and Gain Adjustment Specifications Greater than 95 dB 20-20,000 Hz ± 0.5 dBDirected Electronics, Inc Vista, California Company behind this system is Directed Electronics, Inc

600/4 specifications

The Directed Audio 600/4 is a high-performance, multi-channel amplifier designed to enhance the audio experience in automotive applications. This amplifier is particularly sought after for its combination of power, efficiency, and sound quality, making it a favorite among car audio enthusiasts.

One of the standout features of the Directed Audio 600/4 is its power output. The amplifier delivers an impressive 150 watts RMS per channel at 4 ohms and 300 watts per channel at 2 ohms. This allows users to drive a wide range of speakers, from factory systems to high-performance aftermarket setups. The robust power handling ensures that the amplifier can deliver clean, distortion-free sound at high volumes.

The Directed Audio 600/4 incorporates advanced technologies that contribute to its superior performance. Notably, it features a high-performance MOSFET power supply, which ensures efficient operation and minimizes heat generation. This design not only enhances reliability but also extends the amplifier's lifespan, making it a solid investment for those seeking long-term audio solutions.

Another key characteristic of the 600/4 is its versatile configuration options. The amplifier offers multiple channels, allowing users to adapt it to various setups. Whether running a complete component system with separate tweeters and woofers or bridging channels for subwoofer applications, this amplifier can be tailored to meet the specific needs of any audio system.

Additionally, the Directed Audio 600/4 features built-in crossover options, enabling users to fine-tune the frequency response to suit their speakers and personal preferences. The adjustable high-pass and low-pass filters provide the flexibility needed to achieve the perfect soundstage, making it easier to create a custom audio environment.

For added convenience, the amplifier is equipped with a remote gain control option, allowing users to adjust the amplifier's output from the front of the vehicle without needing to reach into the trunk or back seat.

In conclusion, the Directed Audio 600/4 stands out for its powerful performance, efficient technologies, and flexibility. With features that cater to both novice and experienced users, it represents an excellent choice for anyone looking to enhance their vehicle’s audio system.
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