Radio Shack XL-400 owner manual HIGH-LEVEL Speaker Wire Inputs

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If your auto sound system has two line out jacks (left and right), connect the auto sound system to the amplifier.

CH 4

CH 3

CH 1

CH 2

LeftRight

Auto Sound System

Note: For the best results, use shielded audio Y-adapters (not supplied) available at your local RadioShack store.

HIGH-LEVEL (SPEAKER WIRE) INPUTS

using either a floating or common ground connection.

If your auto sound system does not have low-level line out jacks but has only speaker outputs, connect your auto sound system’s speaker outputs to the amplifier’s HIGH IN- PUT jacks.

If your auto sound system has four speaker outputs, see “Four Speaker Outputs” on Page 10 to connect your system’s speaker outputs to the ampli- fier using either a floating or common ground connection.

If your auto sound system has two speaker outputs, see “Two Speaker Out- puts” on Page 11 to connect your sys- tem’s speaker outputs to the amplifier

Note: A floating ground connection lets the amplifier provide more power to each speak- er, but requires that you connect a separate wire to each speaker terminal. A common ground connection lets you use fewer wires to connect the speakers to the amplifier, but reduces the amount of power supplied to the speakers from the amplifier.

Use the supplied wire harnesses and the supplied twist-on terminal connectors to make the appropriate connections.

Connecting Inputs

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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 Preparation Before YOU Begin the InstallationSupplied Hardware Choosing a Mounting LocationRouting Cables and Wires Installation OrderBefore YOU Make the Connections Preparing the Mounting AreaConnecting Ground and SWITCHED/PRIMARY Power Fm Page 7 Friday, May 12, 2000 1246 PM LOW-LEVEL Inputs Connecting InputsUsing either a floating or common ground connection HIGH-LEVEL Speaker Wire InputsFour Speaker Outputs Floating Ground ConnectionCommon Ground Connection Two Speaker Outputs Preparing the Speaker Wires Connecting SpeakersConnecting Two Speakers Unbridged Connection Connecting Four SpeakersConnecting Two Speakers Bridged Connection Connecting Two Unbridged Speakers and One Bridged Subwoofer Testing Connections Completing the InstallationCle’s negative battery terminal. Then Mounting the AmplifierCompleting the Installation Adjusting the Audio Level OperationTurning on Amplifier Adjusting Frequency Crossover Symptom Possible Cause Suggestion TroubleshootingReplacing a Fuse CareReplacing the SFE-Type Fuse Replacing the Blade-Type FusesFm Page 22 Friday, May 12, 2000 1246 PM Specifications Limited One-Year Warranty