Directed Audio 6550 Owner's Manual
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Directed Audio 6550 Owner's Manual

Directed audio power amplifier model 6550 owner's manual
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Summary of Contents for Directed Audio 6550

  • Page 1 6550...
  • Page 2 © 2002 Directed Electronics, Inc...

  • Page 3: Table Of Contents

    Featuring high-efficiency MOSFET power supplies, flexible on-board crossovers, and state of the art audio design, Directed Audio power amplifiers will excite and delight the mobile sound TABLE OF CONTENTS Limited Two-Year Consumer Warranty ......4 Features .

  • Page 4: Limited Two-Year Consumer Warranty

    LIMITED TWO-YEAR CONSUMER WARRANTY Directed Electronics, Inc. promises to the original purchaser, to replace this product should it prove to be defective in workman- ship 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...

  • Page 5: Features

    FEATURES Dual high-speed MOSFET switching power supplies and complimentary bipolar outputs. Thermal, DC offset, reverse polarity, and short circuit protection. Top-mounted controls accessed for system tuning. Dual continuously variable 12 dB/octave two-way crossovers (ch 1-6, RCA output). Switchable 8 dB bass EQ function and optional remote subwoofer level control (ch 5-6).

  • Page 6: Installation Guidelines

    INSTALLATION GUIDELINES 1. Please read this owner’s manual carefully before installing this ampli- fier. 2. Disconnect the battery ground terminal prior to making any elec- trical connections. 3. Check for any hazards or obstruc- tions such as gas tanks, fuel or brake lines, and wiring harnesses before mounting the amplifier.
  • Page 7 speaker load, the more heat is generated. For low impedance speaker applications or restricted ventilation installations, an external cooling fan may be advisable. 9. Battery and ground connections to the vehicle should be made with crimped ring terminals of the appro- priate size (surface area is what counts);...

  • Page 8: Front Panel Connections/Status Led

    3. S S t t a a t t u u s s L L E E D D - Lights GREEN to indi- cate the amplifier is on and oper- ating normally, and will be off if the FIGURE 1—AMPLIFIER CONNECTIONS 6550 FRONT amplifier shuts down due to short circuit, DC offset, or overheating detected by the on-board protection circuitry.

  • Page 9: Rear Panel Connections

    4. R R e e m m o o t t e e T T u u r r n n O O n n - This terminal turns on the amplifier when (+) 12 volt is applied to it. Connect it to FIGURE 2—AMPLIFIER CONNECTIONS 6550 REAR © 2002 Directed Electronics, Inc the remote turn on lead of the head unit or signal source.

  • Page 10: Top Panel Controls

    TOP PANEL CONTROLS 1. I I n n p p u u t t G G a a i i n n A A d d j j u u s s t t m m e e n n t t - Controls amplifier sensitivity and is used to match the input level of the amplifier to the output level of the signal...

  • Page 11: Top Panel Features

    TOP PANEL FEATURES Control Panel Cover The gain and filter controls are located under a control panel cover on top of the amplifier. The control panel cover must be removed to gain access to the gain and filter controls. SPEAKER WIRING DIAGRAMS Stereo operation (top view) Four Channel Stereo with Mono Sub ©...
  • Page 12 N N O O T T E E : : When wiring the 6550 for three channel operation, connect the left audio signal to both channels one and two RCA jacks and the right audio signal to both channels three and four RCA jacks using RCA Y adapters.

  • Page 13: Crossover Settings And Gain Adjustment

    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.

  • Page 14: Specifications

    SPECIFICATIONS Directed model 6550 RMS continuous power per channel, Channels 1-4 driven into 4 ohms from 20 to 20,000 Hz, with less than 0.08% total Harmonic Distortion @ 14.4 VDC. Channel 5-6 driven into 4 ohms from 20-250 Hz, with less than 0.08% THD @ 14.4 VDC.
  • Page 16 Directed Electronics, Inc. Vista, California 92083 www.directed.com Quality Directed products are sold and serviced throughout North America and around the world Call 800 274 0200 for more information about our products and services © 2002 Directed Electronics, Inc. - All rights reserved - G45066 02/02 The company behind this system is Directed Electronics, Inc.

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