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12-2015.fm Page 1 Tuesday, July 13, 1999 3:47 PM Cat. No. 12-2015 OWNER’S MANUAL Please read before using this equipment. XL-150 High Power 4-Channel Stereo Amplifier...
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12-2015.fm Page 2 Tuesday, July 13, 1999 3:47 PM FEATURES Your Optimus XL-150 High Power 4- Channel Stereo Amplifier is designed to give added punch and power to your vehicle’s existing autosound system. The amplifier produces up to 40 watts...
12-2015.fm Page 3 Tuesday, July 13, 1999 3:47 PM CONTENTS Preparation ... 4 Supplied Hardware ... 4 Before You Begin the Installation ... 4 Choosing a Mounting Location ... 5 Preparing the Mounting Area ... 5 Routing Cables and Wires ... 5 Installation Order ...
12-2015.fm Page 4 Tuesday, July 13, 1999 3:47 PM PREPARATION SUPPLIED HARDWARE Your amplifier comes with the following items. Be sure you locate everything shown before you store or dispose of the packing materials. (illustration - show all amplifier parts, wires, and hardware) BEFORE YOU BEGIN THE INSTALLATION Before you install your amplifier, read all the instructions in this owner’s manual.
12-2015.fm Page 5 Tuesday, July 13, 1999 3:47 PM Choosing a Mounting Location A good location for mounting the am- plifier is in your vehicle’s trunk. Wher- ever you decide to mount it, choose a location that: • Does not interfere with the vehi- cle’s operation •...
12-2015.fm Page 6 Tuesday, July 13, 1999 3:47 PM BEFORE YOU MAKE THE CONNECTIONS The supplied connection cables in- clude all the lead wires you need to connect the amplifier to ground, power, and your existing autosound system. Important: • Do not cut these wires. If you cut any wire, you cannot obtain a refund or exchange on this prod- uct.
12-2015.fm Page 7 Tuesday, July 13, 1999 3:47 PM CONNECTING GROUND AND SWITCHED/PRIMARY POWER Follow these steps to connect the am- plifier to ground, switched power, and primary power. 1. If you have not done so already, disconnect the cable from your vehicle’s negative (–) battery ter- minal.
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12-2015.fm Page 8 Tuesday, July 13, 1999 3:47 PM 5. Connect the blue/white wire’s other end to your autosound sys- tem’s switched power lead using one of the supplied twist-on termi- nal connectors. (illus) This connection turns on the amplifier when you turn on the autosound system, and turns off the amplifier when you turn off the autosound system.
12-2015.fm Page 9 Tuesday, July 13, 1999 3:47 PM CONNECTING INPUTS LOW-LEVEL INPUTS You can connect your autosound system’s low-level line out jacks to the amplifi- er’s low-level line in jacks. If your autosound system does not have low-level line out jacks, see “High Level (Speaker Wire) Inputs”...
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12-2015.fm Page 10 Tuesday, July 13, 1999 3:47 PM If your autosound system has two line out jacks (left and right) , connect the autosound system to the amplifier as shown: (illus) Note: For the best results, use shielded audio Y-adapters such as Cat. No. 42- 2435 (not supplied).
12-2015.fm Page 11 Tuesday, July 13, 1999 3:47 PM HIGH-LEVEL (SPEAKER WIRE) INPUTS If your autosound system does not have low-level line out jacks but has only speaker outputs, connect your autosound system’s speaker outputs to the amplifier’s HIGH INPUT •...
12-2015.fm Page 14 Tuesday, July 13, 1999 3:47 PM CONNECTING SPEAKERS You can connect two or four speakers to the amplifier and your autosound system. Preparing the Speaker Wires Caution: You must connect a sepa- rate wire to each speaker terminal as described in the following procedures.
12-2015.fm Page 15 Tuesday, July 13, 1999 3:47 PM Connecting the Speakers to the Amplifier 1. Use a screwdriver to connect the front left speaker’s positive (+) wire to the amplifier’s SPEAKERS FL (+) 2. Use a screwdriver to connect the front left speaker’s negative (–) wire to the amplifier’s SPEAKERS FL (–) 3.
12-2015.fm Page 16 Tuesday, July 13, 1999 3:47 PM COMPLETING THE INSTALLATION TESTING THE CONNECTIONS Before you continue, make sure you have securely made all connections. Then reconnect the cable to the vehi- cle’s negative (–) battery terminal. on both ends of LEVEL (MIN/MAX) the amplifier to its mid position (see “Adjusting...
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12-2015.fm Page 17 Tuesday, July 13, 1999 3:47 PM 4. Drill -inch (3.57 mm) holes at the marked locations, being care- ful not to damage anything behind the mounting surface. 5. Secure the amplifier to the mount- ing surface using the supplied sheet metal screws and washers.
12-2015.fm Page 18 Tuesday, July 13, 1999 3:47 PM OPERATION TURNING ON THE AMPLIFIER The amplifier automatically turns on a few seconds after you turn your vehi- cle’s ignition switch to ACC or ON, or turn on your autosound system, de- pending on how you wired the system.
12-2015.fm Page 19 Tuesday, July 13, 1999 3:47 PM TROUBLESHOOTING We do not expect you to have any problems with your Optimus XL-150 High Power 4-Channel Car Amplifier, but if you have a problem, this chart might help. If not, take the amplifier to your local RadioShack store for assistance.
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12-2015.fm Page 20 Tuesday, July 13, 1999 3:47 PM SYMPTOM No sound (continued) The amplifier might have shut down (continued) Power problem. Distorted sound The amplifier might be receiving too much input power from your auto- sound system. An output channel might have shorted.
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12-2015.fm Page 21 Tuesday, July 13, 1999 3:47 PM SYMPTOM POSSIBLE CAUSE The amplifier might be Reduce your autosound receiving too much system’s output power power from your auto- (if possible), or reduce sound system. the autosound system’s volume. SUGGESTION...
12-2015.fm Page 22 Tuesday, July 13, 1999 3:47 PM CARE AND MAINTENANCE Your Optimus XL-150 High Power 4-Channel Stereo Amplifier is an example of su- perior design and craftsmanship. The following suggestions will help you care for your amplifier so you can enjoy it for years.
12-2015.fm Page 23 Tuesday, July 13, 1999 3:47 PM REPLACING A FUSE If the amplifier does not operate, you might need to replace the red power cable’s 25-amp SFE-type fuse or the 25-amp blade-type fuse on the amplifi- er’s back panel. Check both fuses. Important: Let the amplifier cool down and see if it starts again before you assume a fuse needs to be re-...
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12-2015.fm Page 24 Tuesday, July 13, 1999 3:47 PM Replacing the Blade-Type Fuse 1. Disconnect the cable from the vehicle’s negative (–) battery ter- minal. 2. Grasp the fuse’s plastic end and pull it out. (illustration - show surrounding area, fuse holder, and fuse being pulled out) 3.
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12-2015.fm Page 28 Tuesday, July 13, 1999 3:47 PM Limited One-Year Warranty This product is warranted by RadioShack against manufacturing defects in material and workmanship under nor- mal use for one (1) year from the date of purchase from RadioShack company-owned stores and authorized Ra- dioShack franchisees and dealers.