Radio Shack XL-400 owner manual Operation, Turning on Amplifier, Adjusting the Audio Level

Page 18
EL (MIN/MAX)
LEV-

12-2018.fm Page 18 Friday, May 12, 2000 12:46 PM

ˆOperation

TURNING ON THE

AMPLIFIER

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.

Important: Your amplifier requires 60 amps or more of power from your vehicle’s battery during operation. To protect your battery from discharging, do not operate the amplifi- er unless your vehicle is running.

Note: Your amplifier temporarily shuts down if it gets too hot, then restarts automatically once it cools.

ADJUSTING THE AUDIO LEVEL

For the best performance, you must set

on the left and right sides of the amplifier to adjust the level of the audio sig- nals that enter the amplifier.

1.Use a screwdriver to turn LEVEL (MIN/ MAX) on the left and right sides of the amplifier fully counterclockwise to MIN.

2.Turn the auto sound system’s volume control to about one-third of its full range.

3.On the left and right sides of the ampli- fier, adjust LEVEL (MIN/MAX) to a com- fortable listening level.

4.Turn up the auto sound system’s volume control until the sound begins to distort. Then immediately turn the volume down to a point just before where the distor- tion began.

Caution: Never turn up the auto sound system’s volume control more than needed to adjust the audio level, or more than two-thirds of its maximum vol- ume.

5.On the left and right sides of the ampli- fier, adjust LEVEL (MIN/MAX) until the sound is at the maximum level you want the amplifier to produce.

6.Adjust the auto sound system’s volume control to a comfortable listening level.

18

 

Operation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Image 18
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