Remember, the amplifier can only deliver its rated output when it is not current limited by the power and ground supply wires. This amplifier is designed to drive a speaker load that measures from 2 to 8 ohms. Keep in mind that heat is the long-term enemy of automotive electronics and the lower your © 2003 Directed Electronics, Inc speaker load, the more heat is generated. For low impedance speaker applications or restricted ventilation installations, an external cooling fan may be advisable. 9.

• The gain adjustment allows you to set proper signal match for clean, quiet amplifier 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 se

8. T TTo oop pp L LLi iig ggh hht tt O OOp ppt tti iio oon nns ss - -i. Light On W/Service Code ii. Light Off W/O Service Code iii. Light On, W/O Service Code iv. Light Off, W/Service Code Default is Light On, W/O Service Code The amplifier contains the ability to control the lights on top of the unit behind the logo badge. In addition to custom tailoring many other features, your Directed Dealer can use a Bitwriter® (V2.0 or later) to setup the top light so that it is either on or off when the

of wire used. IASCA and other 3. Check for any hazards or obstructions such as gas tanks, fuel or autosound competition organizations have charts available for this; brake lines, and wiring harnesses you can also find a chart in the before mounting the amplifiers. MECP study guide. Minimum wire 4. Pick a mounting location that will gauge recommendations for the provide adequate access and ventilation and protect the amplifier from heat, moisture, and dirt. individual amplifiers are listed on the

If the RCA inputs are not grounded adequately via the signal source, electrical noise from the vehicle may be picked up in the system. © 2003 Directed Electronics, Inc FRONT PANEL CONNECTIONS/CONTROLS 200/2 - 300/2 1. H HHi iig ggh hh L LLe eev vve eel ll I IIn nnp ppu uut tt C CCo oon nnn nne eec cct tto oor rr - Accepts board active crossover. FLAT does 1v to 10v input from the headunit’s not attenuate any frequencies and speaker output. is for full-range speaker systems. HPF attenuates low fr

The chassis connection point should be scraped free of paint and dirt. Use only quality crimped and/or soldered connectors at both ends of this wire. DO NOT connect this terminal directly to the vehicle battery ground terminal or any other factory ground points. REAR PANEL CONNECTIONS 8 © 2003 Directed Electronics, Inc FIGURE 2—AMPLIFIER CONNECTIONS 250/4 FRONT HIGH INPUT +- L R 1 FRONT HIGH INPUT + - REAR 1 OUTPUT INPUT R L 2 3 L R 7 INPUT 6 3 BASS EQ. OFF ON 5 LPF HPF FLAT MIN MAX 4 GAIN 5 LPF

Electronics, the industry leader in high Directed Audio power amplifiers come quality automotive security and audio with a two-year limited warranty if equipment since 1990. installed by an authorized Directed Directed Audio power amplifiers dealer. If not installed by an authorized continue to set new standards of perfor-dealer, Directed Audio power amplifiers mance, reliability, and affordability in are covered by a one-year, parts-andthe mobile electronics industry. labor limited warranty. Fe

All rights reserved. Sealed Example High-Pass Set at 30Hz In this example, the frequency has been increased to 30 Hz Up to 6 dB of boost is capable at this frequency With +6dB of boost, the woofer has more output down to 23 Hz the overall usable output is increased Figure 8 Figura 8 Abbildung 8 Figure 9 Figura 9 Abbildung 9 AMPLIFIeR WIRInG Power Connections • Power connections accept up to 4 AWG wire • 4 AWG power and ground wire recommended for optimal performance • Connect 12V+ to the battery

installed by an authorized Directed Directed Audio power amplifiers dealer. If not installed by an authorized continue to set new standards of perfor-dealer, Directed Audio power amplifiers mance, reliability, and affordability in are covered by a one-year, parts-andthe mobile electronics industry. labor limited warranty. Featuring high-efficiency MOSFET power Be sure to retain your original sales supplies, flexible on-board crossovers, receipt and refer to the warranty section and state of the

The GREEN LED will turn off and the Protection LED will light RED when the amplifier has shut itself down due to speaker short circuit, DC offset or overheating. 7. R RRe eem mmo oot tte ee S SSu uub bb L LLe eev vve eel ll C CCo oon nnt ttr rro ool ll - Controls the subwoofer amplifier gain controls from a remote location for ease of adjustment during listening. W WWa aar rrn nni iin nng gg: ::DO NOT connect a level control knob from other manufacturers to the Remote Sub Level Control of any Di