Radio Shack XL-400 owner manual Connecting Two Unbridged Speakers and One Bridged Subwoofer

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CH3 (+)

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4.Use a screwdriver to connect the sub- woofer’s positive (+) wire to the ampli- fier’s CH3 (+) or CH4 (+) terminal.

5.Repeat Step 4 to connect the sub- woofer’s negative (–) wire to the ampli- fier’s negative (–) terminal for the same

channel you connected in Step 4. For example, if you connected the sub- woofer’s positive (+) wire to the ampli-

fier’sterminal, connect the subwoofer’s negative (–) wire to the amplifier’s CH3 (–)terminal.

Connecting Two Unbridged Speakers and One Bridged Subwoofer

CH1 Front

CH2 Front

Left Speaker

Right Speaker

Note: CH4 (+) is used as a negative (–) termi- nal for a bridged connection.

1.Use a screwdriver to connect the left front speaker’s positive (+) wire to the amplifier’s CH1 (+) terminal.

2.Use a screwdriver to connect the left front speaker’s negative (–) wire to the amplifier’s CH1 (–)terminal.

3.Repeat Steps 1–2 to connect the right front speaker’s positive (+) and negative

(–)wires to the amplifier’s CH2 (+) and CH2 (–)terminals.

4.Use a screwdriver to connect the sub- woofer’s positive (+) wire to the ampli- fier’s CH3 (+) terminal.

5.Repeat Step 4 to connect the sub- woofer’s negative (–) wire to the ampli- fier’s CH4 (+) terminal.

Subwoofer

6.Make sure the BRG/ST switch on the right side of the amplifier is set to ST, then set the BRG/ST switch on the left side of the amplifier to BRG.

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 Choosing a Mounting Location Before YOU Begin the InstallationPreparation Supplied HardwarePreparing the Mounting Area Installation OrderRouting Cables and Wires Before YOU Make the ConnectionsConnecting 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 Mounting the Amplifier Completing the InstallationTesting Connections Cle’s negative battery terminal. ThenCompleting the Installation Adjusting the Audio Level OperationTurning on Amplifier Adjusting Frequency Crossover Symptom Possible Cause Suggestion TroubleshootingReplacing the Blade-Type Fuses CareReplacing a Fuse Replacing the SFE-Type FuseFm Page 22 Friday, May 12, 2000 1246 PM Specifications Limited One-Year Warranty