Tandy 40-1221 User Manual

Bullet Horn Tweeter

(illus -- pho to 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 c oil and mag­netic 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.

Cat. No.

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.

40-1221

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 con­nections.

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

• 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 3
ameter to accommodate the tweeter.

You need four
(not supplied) to mount t he 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.

3

/16-inch screws and four matching nuts

1

/2 inches in di-

© 1997 Tandy Corporation.

Optimus is a registered tradem ark used by Tandy Corporation.

RadioShack is a trademark used by Tandy Corporation.

All Rights Reserved.

Follow these steps to mount the tweeter.

(illus -- mounting diagram; use fractions
for inch measurements)

1. Use the tweeter’s mounting bracket as a template to mark the locations for the mounting holes.

2. Drill four

1

/8-inch (3 mm) holes in the mounting locations.

3. Secure the bracket to the mounting location with the screws and nuts.

SPECIFICATIONS

Speaker Weight............................................. ....... ....... .. ............ ..... ....... ....... ....... ....... ...................................3.97 oz (112.5 g)

Power Handling................................................................................................. ................................................75 Watts RMS

Maximum Power .......................................................................................................................................................150 Watts

Impedance................................................................................................................................................. High (Piezo Driver)

Frequency Response .............................................................................................................................................1.8–30 kHz

Sensitivity .......................................................................................................................................................................93 dB

RadioShack

A Division of Tandy Corporation

Fort Worth, Texas 76102

1/97 Printed in the USA