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12-2018.fm Page 1 Friday, May 12, 2000 12:46 PM
XL-400 High Power
4/3/2-Channel Bridgeable
Amplifier
Owner’s Manual
Please read before using this equipment.
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12-2018.fm Page 2 Friday, May 12, 2000 12:46 PM Contents Features .................................................................................................................................. 3 Preparation ............................................................................................................................. 4 Supplied Hardware ............................................................................................................ 4 Choosing a Mounting Locatio
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12-2018.fm Page 3 Friday, May 12, 2000 12:46 PM Features Power Indicator Your RadioShack High Power 4/3/2-Chan- — lights when power is nel Bridgeable Amplifier produces a total of supplied to the amplifier. 400 watts to give added punch and power to Protection Indicator — lights if the amplifier your vehicle’s existing auto sound system. shuts itself down. The amplifier produces up to 200 watts per Crossover Frequency Circuit — lets you channel (if bridged) of clean, powerful sound adjus
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12-2018.fm Page 4 Friday, May 12, 2000 12:46 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. Power Wire (Red) (1) Ground Wire (Black) (1) Remote Wire (Blue/White) (1) Flat Washers (4) 4-Pin Connector with Wire (2) Twist-On Terminal Connectors (9) Sheet Metal Screws (4) Lock Washers (4) Also, be aware that installation in your vehi- BEFORE YOU BEGIN THE cle might requir
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12-2018.fm Page 5 Friday, May 12, 2000 12:46 PM Warning: The amplifier gets very hot while it Then test the connections. When you verify is on. Do not touch the amplifier or place that everything works as expected, discon- flammable objects near it. nect the amplifier, mount it in your vehicle, and reconnect it. Preparing the Mounting Area Caution: If you do not make the connections in the order shown, damage to the amplifier Before you mount the amplifier, make sure and your auto sound syste
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12-2018.fm Page 6 Friday, May 12, 2000 12:46 PM Cautions: 100 watts per channel if you connect your auto sound system to two pairs of • For added safety and to protect your speakers or one pair of speakers and a amplifier and auto sound system, dis- subwoofer). Each speaker must have an connect the cable from your vehicle’s impedance of at least 4 ohms. Your local negative (–) battery terminal before you RadioShack store carries a full line of begin. speakers. • Be sure your speakers can hand
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12-2018.fm Page 7 Friday, May 12, 2000 12:46 PM This connection turns on the amplifier when you turn on the auto sound sys- tem, and turns off the amplifier when you turn off the auto sound system. This prevents your vehicle’s battery from being drained if you leave your amplifier on when you turn off your auto sound system. If your auto sound system does not have a switched power lead, connect the blue/white wire’s other end to a point in your vehicle’s fuse block that has power only when yo
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12-2018.fm Page 8 Friday, May 12, 2000 12:46 PM Connecting Inputs (Speaker Wire) Inputs” on Page 9 to connect LOW-LEVEL INPUTS your amplifier. You can connect your auto sound system’s Note: For the best results, use shielded au- low-level line out jacks to the amplifier’s low- dio cables (not supplied) available at your lo- level line in jacks. cal RadioShack store. If your auto sound system does not have 1. Temporarily place the amplifier as close low-level line out jacks, see “High-Lev
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12-2018.fm Page 9 Friday, May 12, 2000 12:46 PM If your auto sound system has two line out jacks (left and right), connect the auto sound system to the amplifier. Left Right Auto Sound System Note: For the best results, use shielded audio Y-adapters (not supplied) available at your local RadioShack store. using either a floating or common HIGH-LEVEL (SPEAKER ground connection. WIRE) INPUTS Note: A floating ground connection lets the If your auto sound system does not have amplifier provide m
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12-2018.fm Page 10 Friday, May 12, 2000 12:46 PM Four Speaker Outputs Floating Ground Connection Violet/Black Green/Black Gray/Black White/Black Auto Sound System Common Ground Connection Violet/Black Green/Black Gray/Black White/Black Auto Sound System 10 Connecting Inputs Right Rear + Right Rear + Speaker Violet Speaker Violet Right Rear– Speaker Common Left Rear – Speaker Green Left Rear + Left Rear + Green Speaker Speaker Right Front + Right Front + Speaker Speaker Gray Gray Right
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12-2018.fm Page 11 Friday, May 12, 2000 12:46 PM Two Speaker Outputs Floating Ground Connection Violet/Black Green/Black Green Violet Auto Sound System Common Ground Connection Violet/Black Green/Black Green Auto Sound System 11 Connecting Inputs Gray Gray Right + Right + Speaker Violet Speaker Right – Common Speaker Left – Speaker Left + Left + Speaker Speaker Gray/ Gray/ Black Black White/ White/ Black Black White White
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12-2018.fm Page 12 Friday, May 12, 2000 12:46 PM 3. Strip the insulation from the ends of CONNECTING SPEAKERS 1 each conductor to expose /4 inch of You can connect four speakers, two speak- wire. Twist the ends to secure loose ers and a subwoofer, or just two speakers to strands. the amplifier and your auto sound system. Important: Before you make the connec- Conductors tions, make sure both BRG/ST switches (on 1 /4 Inch the left and right sides of the amplifier) are set to ST. 4 Inches Prepa
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12-2018.fm Page 13 Friday, May 12, 2000 12:46 PM Connecting Four Speakers CH2 Front CH1 Front CH3 Rear CH4 Rear Right Speaker Left Speaker Left Speaker Right Speaker CH2 (+) 1. Use a screwdriver to connect the front (–) wires to the amplifier’s and CH2 (–) left speaker’s positive (+) wire to the terminals. CH1 (+) amplifier’s terminal. 4. Repeat Steps 1–3 to connect the rear 2. Use a screwdriver to connect the front left and rear right speaker’s positive (+) left speaker’s negative (–) wir
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12-2018.fm Page 14 Friday, May 12, 2000 12:46 PM Connecting Two Speakers (Bridged Connection) Left Speaker Right Speaker Caution: This connection produces 200 2. Use a screwdriver to connect the left watts per channel. Use this connection only if speaker’s negative (–) wire to the ampli- you have high-power speakers that can han- fier’s CH2 (+) terminal. dle a power output of 200 watts. 3. Repeat Steps 1–2 to connect the right Note: CH2 (+) and CH4 (+) are used as nega- speaker’s positive (+)
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12-2018.fm Page 15 Friday, May 12, 2000 12:46 PM 4. Use a screwdriver to connect the sub- channel you connected in Step 4. For woofer’s positive (+) wire to the ampli- example, if you connected the sub- fier’s CH3 (+) or CH4 (+) terminal. woofer’s positive (+) wire to the ampli- fier’s CH3 (+) terminal, connect the 5. Repeat Step 4 to connect the sub- subwoofer’s negative (–) wire to the woofer’s negative (–) wire to the ampli- amplifier’s CH3 (–) terminal. fier’s negative (–) terminal for th
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12-2018.fm Page 16 Friday, May 12, 2000 12:46 PM Completing the Installation and auto sound system operate properly. TESTING THE The amplifier turns on after a few seconds. CONNECTIONS If you cannot quickly confirm whether the Before you continue, make sure you have auto sound system and amplifier are working securely made all connections. Then recon- turn off your vehicle’s ignition properly, nect the cable to the vehicle’s negative (–) and disconnect the cable from your vehi- battery te
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12-2018.fm Page 17 Friday, May 12, 2000 12:46 PM 5. Secure the amplifier to the mounting surface using the supplied sheet metal screws and washers. 6. Reconnect the wiring. 7. Reconnect the cable to the vehicle bat- tery’s negative (–) terminal. 8. Reset your vehicle’s clock, your auto sound system’s tuner memory, and other timer/memory devices. 17 Completing the Installation
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12-2018.fm Page 18 Friday, May 12, 2000 12:46 PM Operation LEVEL (MIN/ 1. Use a screwdriver to turn TURNING ON THE MAX) on the left and right sides of the AMPLIFIER amplifier fully counterclockwise to MIN. The amplifier automatically turns on a few seconds after you turn your vehicle’s ignition switch to ACC or ON or turn on your auto sound system, depending on how you wired the system. The POWER indicator on the side of the amplifier lights when the amplifier is on. 2. Turn the auto soun
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12-2018.fm Page 19 Friday, May 12, 2000 12:46 PM ADJUSTING FREQUENCY CROSSOVER If you installed a subwoofer using the steps in “Connecting Two Speakers and One Sub- woofer (Unbridged Connection)” on Page 14 or “Connecting Two Unbridged Speakers and One Bridged Subwoofer” on Page 15, set X-OVER FREQ ON/OFF to ON, then adjust X-OVER FREQ for your vehicle’s acoustics. The amplifier passes through all frequencies at or below that setting (45- 400 Hz). Note: X-OVER FREQ selects the limit at which
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12-2018.fm Page 20 Friday, May 12, 2000 12:46 PM Troubleshooting We do not expect you to have any problems with your RadioShack High Power 4/3/2-Channel Bridgeable Amplifier, but if you do have a problem, this chart might help. If not, take the ampli- fier to your local RadioShack store for assistance. Symptom Possible Cause Suggestion No power — the amplifier’s Power problem. Check the amplifier’s and auto POWER indicator does not light sound system’s fuses and after the vehicle’s auto s
