Radio Shack XL-260 owner manual Operation, Turning on Amplifier, Adjusting the Audio Level

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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 31 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 LEVEL (MIN/MAX) on the left and right sides of the amplifier to adjust the level of the audio signals 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.

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Contents XL-260 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 AreaFm Page 6 Tuesday, May 9, 2000 1002 AM Connecting Ground and SWITCHED/PRIMARY Power 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 SuggestionTroubleshooting Replacing the SFE-Type Fuse CareReplacing a Fuse Replacing the Blade-Type FusesSpecifications Limited One-Year Warranty

XL-260 specifications

The Radio Shack XL-260 was a pioneering model in the compact scientific calculator market introduced in the early 1980s. This device was particularly well-regarded for its unique blend of functionality, portability, and affordability, making it a popular choice among students and professionals alike.

One of the main features of the XL-260 was its classic LCD display, which offered a clear and easy-to-read output. The display was capable of showing up to 8 digits and allowed for straightforward viewing of calculations. This was particularly beneficial for users who needed to perform complex mathematical computations without experiencing eye strain.

The XL-260 was equipped with a wide range of mathematical functions that catered to different user needs. Basic arithmetic operations such as addition, subtraction, multiplication, and division were always accessible. Additionally, it featured advanced functions including square roots, percentages, and memory storage, allowing users to save and recall values quickly. This made it an excellent tool for engineering students and professionals who often needed to perform numerous calculations.

One of the standout technologies of the XL-260 was its use of solar power, which complemented its battery operation. This hybrid power source ensured that users could rely on the calculator for extended periods without the constant need for battery replacements. The solar panel, situated atop the device, captured light to power the electronic components, showcasing a forward-thinking approach to energy efficiency for consumer electronics during that era.

Another characteristic of the XL-260 was its user-friendly layout. The calculator had well-defined buttons that provided tactile feedback, making it easy to input data accurately. The keys were designed to be durable and responsive, reducing the potential for user error during fast-paced calculations. The compact design and lightweight profile added to its appeal, allowing users to easily carry it in their bags or even pockets.

Overall, the Radio Shack XL-260 represented an important era in the evolution of personal calculators. Its combination of essential features, user-oriented design, and innovative power solutions made it a staple for many during its time. Though the landscape of technology has evolved significantly since its release, the XL-260 remains a nostalgic symbol of early digital calculation devices that laid the groundwork for future advancements in scientific computing.
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