Radio Shack XL-400 owner manual Adjusting Frequency Crossover

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X-OVER FREQ

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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

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 the amplifier will pass frequencies (from 45− 400 Hz). You should not use it to adjust the sound you hear through your main speakers.

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Contents XL-400 High Power 2-Channel Bridgeable Amplifier Contents FCC Wants YOU to Know Features14K 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 InputsFloating Ground Connection Four Speaker OutputsCommon 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 Operation Adjusting the Audio LevelTurning 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