Radio Shack XL-400 owner manual Connecting Ground and SWITCHED/PRIMARY Power

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Cautions:

For added safety and to protect your amplifier and auto sound system, dis- connect the cable from your vehicle’s negative () battery terminal before you begin.

Be sure your speakers can handle as much as 400 watts of power (200 watts per channel if you connect your auto sound system to one pair of speakers and bridge the amplifier’s outputs, or

100 watts per channel if you connect your auto sound system to two pairs of speakers or one pair of speakers and a subwoofer). Each speaker must have an impedance of at least 4 ohms. Your local RadioShack store carries a full line of speakers.

To make it easier to gauge wire length and connect the amplifier, temporarily place the amplifier as close as possible to the selected mounting location.

CONNECTING GROUND AND SWITCHED/PRIMARY POWER

Blue/White

Fuse

Red Holder

Black

Vehicle’s Battery

Chassis

Ground

Switched Power Lead

Auto Sound System

Follow these steps to connect the amplifier to ground, switched power, and primary power.

1.If you have not done so already, discon- nect the cable from your vehicle’s nega- tive (–) battery terminal.

2.Use a screwdriver to connect the spade end of the supplied black ground wire to the amplifier’s GND (ground) terminal.

3.Connect the black ground wire’s other end to a chassis ground, such as a metal bolt attached to a metal part of the vehicle’s frame. Be sure the bolt is not

insulated from the chassis by a plastic part.

4.Use a screwdriver to connect the spade end of the supplied blue/white wire to the amplifier’s REM (remote power) ter- minal.

5.If your auto sound system has a switched power lead, connect the blue/ white wire’s other end to your auto sound system’s switched power lead using one of the supplied twist-on termi- nal connectors.

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Preparation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents XL-400 High Power 2-Channel Bridgeable Amplifier Contents Features FCC Wants YOU to Know14K Gold-Plated Noise-Isolated Low-Lev Supplied Hardware Before YOU Begin the InstallationPreparation Choosing a Mounting LocationBefore YOU Make the Connections Installation OrderRouting Cables and Wires Preparing the Mounting AreaConnecting Ground and SWITCHED/PRIMARY Power Fm Page 7 Friday, May 12, 2000 1246 PM Connecting Inputs LOW-LEVEL InputsHIGH-LEVEL Speaker Wire Inputs Using either a floating or common ground connectionFour Speaker Outputs Floating Ground ConnectionCommon Ground Connection Two Speaker Outputs Connecting Speakers Preparing the Speaker WiresConnecting Four Speakers Connecting Two Speakers Unbridged ConnectionConnecting Two Speakers Bridged Connection Connecting Two Unbridged Speakers and One Bridged Subwoofer Cle’s negative battery terminal. Then Completing the InstallationTesting Connections Mounting the AmplifierCompleting the Installation Adjusting the Audio Level OperationTurning on Amplifier Adjusting Frequency Crossover Troubleshooting Symptom Possible Cause SuggestionReplacing the SFE-Type Fuse CareReplacing a Fuse Replacing the Blade-Type FusesFm Page 22 Friday, May 12, 2000 1246 PM Specifications Limited One-Year Warranty