Cat. No. 31-3044
HTS-105 Home Theater System
Your HTS-105 Home Theater System includes the STAV-
3770 receiver (RadioShack 31-3042, with its owner’s man-
ual and accessories), two front speakers, two surround-
sound (rear) speakers, one center-channel speaker, and
one amplified subwoofer. All you need to add to have a
complete home theater system are an audio/video input
source (stereo Hi-Fi VCR or DVD/LD player) and a TV.
Caring for Your Speakers
• Use a polishing cloth or dry cloth to wipe off dust and
dirt.
• If the cabinet is very dirty, wipe it with a soft cloth
dipped in a neutral cleanser diluted with water, then
wipe again with a dry cloth. Do not use furniture wax
or cleaners.
For receiver instructions and the HTS-105’s warranty, refer
to the STAV-3770 Owner’s Manual. The instructions on
the next few pages only cover basic home theater and
speaker connections, and how to adjust the subwoofer
controls. Before making any connections, see “Positioning
Speakers” in the STAV-3770 Owner’s Manual to choose
the best locations for your speakers.
• Never use thinner, benzene, insecticide sprays, or
other chemicals on or near the cabinets.
• Never use a vacuum cleaner to clean the grille cloth.
Connecting Speakers
Center Speaker
Your HTS-105 system includes all speaker wires required
for speaker connections. Each speaker wire consists of
two conductors (individual wires) encased in insulation
and is color-coded so you can identify each conductor (the
color mark is on only one of the conductors in each speak-
er wire pair). Use these colors as a guide to help you prop-
erly connect the speakers. (For subwoofer connection,
use the supplied patch cable with phono plugs on both
ends. Phasing is automatic.) For easy identification, your
speakers are labeled FRONT and REAR.
Front Left
Speaker
Front Right
Speaker
Subwoofer
Listening
Area
Rear Left
Speaker
Rear Right
Speaker
If the supplied speaker wires are too short for your con-
nections, you can purchase additional wire at your local
RadioShack store. Use 16-gauge (or larger) speaker wire
for all speaker connections.
Speaker Specifications
Power Handling .................. 35W RMS, 105W Maximum
(all speakers except subwoofer)
When connecting each conductor to a speaker terminal,
hold down the terminal lever, insert the conductor’s end
into the small hole, and release the terminal lever to se-
cure the conductor.
Nominal Impedance Front /Center ..................... 8 Ohms
Nominal Impedance Rear ................................. 16 Ohms
Sensitivity (all speakers except subwoofer) ........... 86 dB
When connecting each conductor to the receiver, press
open the terminal lever, insert the conductor’s end into the
small hole, and press the lever closed to secure the con-
ductor.
Supplied Accessories
Notes:
Quantity
Description
Colors
• Be sure you connect the receiver’s right and left posi-
tive (+) and negative (–) terminals to the speaker’s
corresponding right and left positive (+) and negative
(–) terminals.
Speaker Wires
2
2
Receiver Out to Front Speakers
Light Blue/Pink
Green/Orange
Receiver Out to Surround Sound
Speakers
• Do not connect two pairs of speakers to a single set of
terminals.
1
Receiver Out to Center Speaker
Patch Cable
Yellow
• Surround speakers generally sound best if you posi-
tion them above ear level.
1
1
Receiver Out to Subwoofer (single cable)
VCR Out to Receiver In (dual cable)
© 1999 Tandy Corporation.
All Rights Reserved.
RadioShack and Optimus are registered trademarks used by Tandy Corporation.
Connecting the Front Speakers
Left
Front Speaker
Right
Front Speaker
Pink
Light Blue
FRONT SPEAKERS
SUB
R
L
WOOFER
CAUTION: SPEAKER IMPEDANCE
~ 16 / SPEAKER
8
PRE
OUT
R
R
L
L
CENTER
SURROUND
SPEAKERS
SPEAKER
1. Connect the light blue conductor to the receiver’s FRONT SPEAKERS L (+) red terminal.
2. Connect the other conductor to the receiver’s FRONT SPEAKERS L (–) black terminal.
3. Connect the light blue conductor’s other end to the left front speaker’s positive (+) red terminal.
4. Connect the other conductor’s end to the left front speaker’s negative (–) black terminal.
5. Using the pink wire, repeat Steps 1–4 to connect the receiver’s FRONT SPEAKERS R terminals to the right front speaker’s
terminals.
Connecting the Surround-Sound Speakers
FRONT SPEAKERS
SUB
R
L
WOOFER
CAUTION: SPEAKER IMPEDANCE
~ 16 / SPEAKER
8
PRE
OUT
R
R
L
L
CENTER
SURROUND
SPEAKERS
SPEAKER
Green
Orange
Surround-Sound
Speaker
Surround-Sound
Speaker
Right
Left
1. Connect the green conductor to the receiver’s SURROUND SPEAKERS L (+) red terminal.
2. Connect the other conductor to the receiver’s SURROUND SPEAKERS L (–) black terminal.
3. Connect the green conductor’s other end to the left surround speaker’s positive (+) red terminal.
4. Connect the other conductor’s end to the left surround speaker’s negative (–) black terminal.
5. Using the orange wire, repeat Steps 1–4 to connect the right surround speaker to the receiver’s SURROUND SPEAKERS R
terminals.
3
Connecting the Subwoofer
FRONT SPEAKERS
SUB
R
L
WOOFER
CAUTION: SPEAKER IMPEDANCE
~ 16 / SPEAKER
8
Subwoofer
Receiver
PRE
OUT
R
R
L
L
LINE LEVEL LEVEL
INPUT
POWER
MAX
MIN
CENTER
SURROUND
SPEAKERS
SPEAKER
AC OUTET
AC 120V 60Hz
CAUTION:
DONOT CONNECT
TV SET OR MONITOR.
SWITCHED
100W MAX
0.8A MAX
LINE LEVEL
INPUT
LEVEL
POWER
MIN
MAX
Subwoofer
Use the supplied single patch cable to connect the receiver’s SUBWOOFER/PRE OUT jack to the subwoofer’s LINE LEVEL INPUT
jack. Then connect the subwoofer’s power cord to a standard AC outlet or the receiver’s SWITCHED outlet. The subwoofer’s
POWER indicator lights when the power is on.
Wall Mounting the Speaker System
To mount the speakers on a wall, you need wood screws with heads that fit into the keyhole slot on the back of each speak-
er. Make sure the wall surface and screws you use are appropriate for the weight of the speakers. Keep in mind that the
speaker’s vibration will affect the surface, so we do not recommend mounting on plywood boards or other soft-surface
walls.
1
4
Drill a hole and thread a screw into the wall, letting the head extend about / inch (6 mm) from the wall. Align the keyhole
slot with the mounting screw and slide the speaker downward to secure it.
Wall or pillar
Mounting
Screw
Keyhole Slot
Wall or pillar
Gap
Incorrect
Correct
1/4"
Adjusting the Subwoofer Level
You can adjust the subwoofer sound level independently from the other speaker’s level. Rotate LEVEL on
the back of the subwoofer clockwise to increase the volume; counterclockwise to decrease it.
LINE LEVEL LEVEL
INPUT
POWER
MAX
MIN
Note: Always set to MIN before you begin listening, then increase the level slowly. If the system is turned
on with the volume set too high, it can cause damage to hearing or to the speaker. Take care not to in-
crease the volume at the receiver (including BASS or LOUDNESS controls) with the subwoofer’s LEVEL
set at the MAX position: the signal level might reach a clipping level, causing damage to the subwoofer’s
amplifier or speaker element.
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
06/99
Printed in the USA
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