Radio Shack XL-260 owner manual Connecting Two Unbridged Speakers and One Bridged Subwoofer

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3.Repeat Steps 1–2 to connect the front right 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 (+) 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’s CH3 (+) terminal, 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.

Subwoofer

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

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-260 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 ConnectionsFm Page 6 Tuesday, May 9, 2000 1002 AM Connecting Ground and SWITCHED/PRIMARY Power 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 TroubleshootingTroubleshooting Replacing the Blade-Type Fuses CareReplacing a Fuse Replacing the SFE-Type FuseSpecifications 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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