User manual DEI 150

[. . . ] Please read the owner's manual carefully before you install the amplifier. Disconnect the battery ground terminal prior to making any electrical connections. Check for any hazards or obstructions such as gas tanks, fuel or brake lines, and wiring harnesses before mounting the amplifiers. Pick a mounting location that will provide adequate access and ventilation and protect the amplifier from heat, moisture, and dirt. [. . . ] Your connections to the amplifier's speaker and power terminals should be made with crimped spade lugs, and the battery and ground connections to the vehicle should be made with crimped ring terminals of the appropriate size (surface area is what counts); soldering the terminals after crimping is also recommended. Due to the high-frequency MOSFET switching power supply used in all Directed Audio amplifiers, filtering the power cable is not generally required (remember that the amp can't deliver full output if the power supply is restricted). Proper grounding of the signal source is mandatory for the amplifier to reach its performance peak. If the RCA inputs are not grounded adequately via the signal source, electrical noise from the vehicle may be picked up in the system. © 1999 Directed Electronics, Inc 3 AMPLIFIER CONNECTIONS Refer to Figure 1 for details. GROUND TERMINAL - connect this terminal to the car chassis with a short heavy gauge wire, DO NOT CONNECT TO THE NEGATIVE TERMINAL OF THE CAR BATTERY or to factory chassis ground points already occupied by factory wires!If you are grounding multiple amplifiers, you may use a high-current distribution block with proper gauge cables, or use individual grounds for each amp attached to the vehicle at separate but close ground points. REMOTE TERMINAL - connect this terminal to the amplifier remote output from your head unit or signal source, if it provides one. You may also use the power antenna output wire from decks that do not have separate amp remote outputs. Do FIGURE 1--AMPLIFIER CONNECTIONS not connect this terminal to a constant source of +12V. +12V POWER TERMINAL - connect this terminal to the positive terminal of the car or separate audio system battery. Refer to the installation guidelines and specs page for proper gauge of wire. YOU MUST PROTECT THIS WIRE WITH A FUSE or circuit breaker located close to the battery. If the fuse(s) blows, check your system for wiring problems or see your dealer. Refer to the speaker wiring diagrams (pg. 6) for different wiring options. 4 © 1999 Directed Electronics, Inc AMPLIFIER CONTROLS Refer to Figure 2 for details. RCA INPUT JACKS - accepts linelevel outputs from head units or signal sources at voltages from 200 mV to 8 volts. High-grade shielded or twisted pair RCA cables are recommended for this input. GAIN ADJUSTMENT - controls the gain (input sensitivity) of the amplifier. CROSSOVER SELECTION SWITCH controls the type of filter for the onboard active crossover. LPF setting is for low-pass (subwoofer) output frequencies, HPF is for high-pass (mid-bass/midrange) outputs. LED INDICATOR - the green Power LED lights to indicate normal operation. The green LED will shut off to indicate amp shutdown due to short circuit, DC offset, or overcurrent conditions detected by onboard protection circuits. Use as necessary for low frequency enhancement. FIGURE 2--AMPLIFIER CONTROLS © 1999 Directed Electronics, Inc 5 SPEAKER WIRING DIAGRAMS Stereo operation Mono operation Simultaneous stereo/mono operation 6 © 1999 Directed Electronics, Inc CROSSOVER SETTINGS AND GAIN ADJUSTMENT Your Directed Audio power amplifier needs to be adjusted carefully to achieve maximum performance. [. . . ] · 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 ! © 1999 Directed Electronics, Inc 7 SPECIFICATIONS 150/250/400 model 150 250 400 RMS continuous power per channel, both channels driven into 4 ohms from 20 to 20, 000 Hz, with less than 0. 08% Total Harmonic Distortion @ 14. 4 VDC RMS continuous power per channel, both channels driven into 2 ohms from 20 to 20, 000 Hz, with less than 0. 1% Total Harmonic Distortion @ 14. 4 VDC RMS continuous power bridged into a 4 ohm load from 20 to 20, 000 Hz, with less than 0. 1% Total Harmonic Distortion @ 14. 4 VDC Dynamic power rating (IHF-202 Standard) bridged into 4 ohms Signal-to-Noise Ratio Frequency Response Damping Factor @ 4 ohm Crossover 50 watts 75 watts 150 watts 200 watts 75 watts 125 watts 250 watts 325 watts 125 watts 200 watts 400 watts 550 watts Greater than 95 dB 20-20, 000 Hz ± 0. 5 dB Greater than 200 Switchable high or low pass 12 dB/octave, continuously variable from 50 to 500 Hz +8 dB, centered at 40Hz 20K ohms Variable from 150 mV to 8 volt 2 to 8 ohms, stereo 4 to 8 ohms, bridged 10 to 16 VDC 20A #12 25A #10 50A #8 Bass Equalization Input Impedance Input Sensitivity Output Impedance Supply Voltage Fusing and Power Cable Requirements (AWG) (Per amp, trunk mounted) 8 © 1999 Directed Electronics, Inc LIMITED TWO YEAR CONSUMER WARRANTY Directed Electronics, Inc. (DEI ) promises to the original purchaser, to replace this product should it prove to be defective in workmanship or material under normal use, for a period of two years from the date of purchase by the dealer as indicated by the date code marking of the product PROVIDED the product was installed by an authorized DEI dealer. [. . . ]