Wiring, Mounting | Tandy 40-1221 instruction

Cat. No. 40-1221

Bullet Horn Tweeter

(illus -- photo of product)

Your Optimus Bullet Horn Tweeter features a high quality piezo ceramic disc drive bimorph driver element. This ce- ramic driver replaces the traditional voice coil and mag- netic structure, completely eliminating the most common causes of magnetic tweeter failure — distortion due to mechanical interference (such as dirt on the voice coil) and the voice coil interfering with the magnetic structure.

The tweeter requires no crossover network (crossover is optional) and no specific baffling, and can be used on most 4-, 8-, and 16- ohm speakers.

WIRING

Wire the tweeter to your audio system, then test the con- nections.

Connect speaker wire from one of your audio system’s positive outputs to the tweeter’s positive (+) terminal.

Connect speaker wire from your audio system’s matching negative output to the tweeter’s unmarked negative (–) terminal.

(illus -- simple connection diagram)

Cautions:

•Be sure all wiring is fully protected from sharp edges.

•Be sure the audio system is off when connecting any wires.

•Leave enough slack in the wires so they can reach the terminals easily.

MOUNTING

If you decide to mount the tweeter inside an enclosure, temporarily disconnect the tweeter while you mount it.

If necessary, cut a hole in the enclosure 31/2 inches in di- ameter to accommodate the tweeter.

You need four 3/16-inch screws and four matching nuts (not supplied) to mount the tweeter inside an enclosure. Mount the tweeter from the outside, so its front edge is flush with the front of the mounting surface for proper sound dispersion.

Optimus is a registered trademark used by Tandy Corporation.

RadioShack is a trademark used by Tandy Corporation.

40-1221 specifications

The Tandy 40-1221 is a vintage computing device that represents a significant milestone in the history of personal computing. Known for its robust performance and reliability, the Tandy 40-1221 was part of Tandy Corporation's line of computers in the 1980s. This model catered to a variety of user needs, from home computing to small business applications, making it a versatile choice during its time.

One of the main features of the Tandy 40-1221 is its use of the Intel 8085 microprocessor. This 8-bit processor was renowned for its efficiency and processing power, enabling users to run various applications smoothly. The presence of 64KB of RAM allowed for effective multitasking capabilities, making it suitable for word processing, simple programming, and data management tasks.

The Tandy 40-1221 also boasted a built-in 5.25-inch floppy disk drive, which was an essential feature for software loading and data storage during the era. This allowed users the convenience of easily loading programs and saving their work, thus enhancing productivity. Additionally, the machine supported a range of external peripherals, including printers and modems, through a series of expansion ports, thereby increasing its functional capabilities.

In terms of display, the Tandy 40-1221 featured a monochrome screen, which was standard for computers of that era. The clarity of the text on the screen, combined with a simple user interface, ensured that users could navigate through their tasks without unnecessary complexity. The keyboard layout was designed for ergonomic use, allowing for comfortable typing over extended periods.

The durability of the Tandy 40-1221 is another characteristic that helped it stand out. Built with quality materials, it was engineered to withstand the rigors of everyday use, making it a dependable choice for consumers. Its compact design also made it suitable for various setups, whether on a desktop or a makeshift workstation.

In conclusion, the Tandy 40-1221 is a notable example of early personal computing technology, embodying the features and characteristics necessary for effective computing during its time. Its combination of a powerful processor, ample RAM, expandable storage options, and a user-friendly interface made it an essential tool for users seeking a reliable computing experience. Though it may now be considered a relic in the evolution of technology, the Tandy 40-1221 holds a special place in the annals of computing history.