40-137 2.fm Page 1 Tuesday, August 10, 1999 3:25 PM
900 MHz Wireless Amplified Speakers
Cat. No. 40-1372
OWNER’S MANUAL
Please read before using this equipment.
AMX-25
y
g
g
40-137 2.fm Page 2 Tuesday, August 10, 1999 3:25 PM
FEATURES
Your Optimus 900 MHz Wireless Am plified Speakers bring you the latest
in wireless speaker technology. Operating in the 900 MHz band, this
speaker system’s signals easily travel
through walls and floors, delivering
high-quality stereo sound to almost
anywhere in or around your home.
Now you do not need to place the
speakers in the same room as your
stereo system to hear your favorite
programs.
The system includes a transmitter
that connects to your audio source,
and two speakers that receive signals
from the transmitter.
The speaker system’s features include:
Two-Wa
si
production from even the most
demanding audio sources.
Bass Boost
bass sound.
10-Watt Amplifier
sound throughout the high and low
frequency ranges.
, Bass Reflex Speaker De-
— provides excellent sound re-
n
— adds a deeper, richer
— produce s clear
THE FCC WANTS YOU
TO KNOW
Your speaker system might cause TV
or radio interference even when it is
operating properly. To determine
whether your speaker system is causing the interference, unplug your
speaker system’s transmitter. If the
interference goes away, your speaker
system is causing it.
Try to eliminate the interference by:
• Moving your speakers aw ay f rom
the receiver
• Connecting your speakers to outlets that are on a different electrical circuit from the receiver
• Contacting your local RadioShack store for help
Note:
interference from other 900 MHz devices such as wireless headphones,
cordless phones, or other wireless
speakers that operate on the same
frequencies. If you experience interference, try moving the speakers
away from the other devices.
Your speakers are subject to
Optional Speaker Bracket
able through RadioShack Unlimited)
lets you easily mount your speakers
on the wall.
Char
er Jack
PRO-100 Wireless Headphones.
2
— lets you charge the
Optimus is a registered trademark used by Tandy Corporation.
RadioShack is a trademark used by Tandy Corporation.
— (avail-
© 1997 Tandy Corporation.
All Rights Reserved.
40-137 2.fm Page 3 Tuesday, August 10, 1999 3:25 PM
PREPARATION
INSTALLING THE
TRANSMITTER
Connecting to Your Audio
Source
You can connect the transmitter to
your audio source’s left and right audio output jacks or its headphones
jack.
Caution:
mitter to the audio source’s speaker
output. Doing so could damage the
transmitter and audio source.
1. Connect one end of the supplied
Do not connect the trans-
audio patch cord to the transmitter’s
AUDIO IN
and red plug to R).
L
jacks (white plug to
If you are using your audio
source’s stereo headphones jack,
connect the whi te and red plugs
at the other end of t he patch cord
to the white and red phono jacks
on the supplied Y-cable.
If your audio source has a
headphones jack, connect the
1
/8-inch
1
/8inch stereo plug on the other end
of the Y-cable directly to the
audio source’s
1
/8-inch head-
phones jack.
If your audio source ha s a
Note:
1
/4-inch headphones jack , use the
supplied
1
/8-to-1/4-inch stereo
adapter.
2. If you are using your audio
source’s audio output jacks, connect the white and red plugs at
the other end of the patch cord
directly to the audio sourc e’s corresponding left and right audio
jacks (white plug to left and red
plug to right).
3
40-137 2.fm Page 4 Tuesday, August 10, 1999 3:25 PM
Connecting to Power
Plug the supplied AC adapter’s small
straight barrel plug into the transmitter’ s
DC 18V
adapter into a standard AC outlet.
Cautions:
• The transmitter’s supplied AC
adapter (in a box marked
TRANSMITTER
and at least 150 milliamps, and
its plug’s center tip is positive.
Using an adapter that does not
meet these specifications could
damage the adapter or the transmitter.
jack. Then plug the
FOR
) provides 18 volts
INSTALLING THE
SPEAKERS
Select a location for each speaker
that is near an AC outlet.
Caution:
AC adapter (in a box marked
SPEAKER
least 800 milliamps, and its plug’s
center tip is positive. Using an adapter that does not meet these specifications could damage the adapter or
the speaker.
Follow these steps to install the
speakers.
1. Turn off both speakers by rotating
Each speaker’s supplied
FOR
) provides 15 volts and at
their
POWER/VOL
knobs fully
counterclockwise until they click.
•The
CHARGER
jack on the transmitter is for charging the
RadioShack PRO-100 Wireless
Headphones (Cat. No. 3 3-1145).
Do not plug any other device i nto
this jack.
4
2. Set each speaker’s mode switch
as follows:
— For the left stereo speaker
L
— For the right stereo speaker
R
— If your source is mono
MONO
3. Plug the AC adapter’s large ri ghtangle barrel plug into the
speaker’s
DC 15V 800mA
jack.
4. Plug the AC adapter into a standard AC outlet.
40-137 2.fm Page 5 Tuesday, August 10, 1999 3:25 PM
OPERATION
Follow these steps to use your speakers.
1. Turn on your audio source.
2. Rotate the transmitter’s
LEVEL
all
the way to the right (minimum
setting).
3. If you connected the transmitter
to an audio sou rce’s LINE OUTPUT jack (or a jack that is not
controlled by the audio source’s
volume control), slowly rotate
to the left until the indica-
LEVEL
tor at the front of the transmitter
just starts to flicker.
If you connected the transmitter
to an audio source’s headp hones
jack (or jack that is controlled by
the audio source’s volume control), set the audio source’s volume to the desired level first
(about midway), then slowly
rotate
to the left until the
LEVEL
indicator at the front of the transmitter just starts to flicker.
Some audio sources might
Note:
not make the indicator flicker. For
these sources, simply rotate
all the way to the le f t.
LEVEL
4. Rotate each speaker’s
knob clockwise until it clicks
VOL
POWER/
and you hear the program sourc e
or hissing.
5. Slowly rotate
TUNING
on each
speaker until the indicator on the
front of each speaker lights
steadily.
Notes:
• When the indicator lights
steadily, the speaker is tuned
to the same frequency being
transmitted by the transmitter.
• If reception is poor, even when
the speakers are near the
transmitter, try either raising
the transmitter to a position
higher than the speakers or
moving it aw ay from the audi o
source.
• When transmitting over long
distances, the signal might get
weaker and the indicator m ight
dim. When this hap pens, your
speakers continue to operate
but receive the sign als in m onaural instead of stereo.
6. Rotate each speaker’s
knob to a comfortable listen-
VOL
POWER/
ing level.
Note:
speakers’
Make sure you set both
POWER/VOL
knobs to
the same level so the stereo
sounds are properly balanced
between the two speakers.
5
40-137 2.fm Page 6 Tuesday, August 10, 1999 3:25 PM
7. Set
speaker to
bass sound.
Be sure to turn off the speakers when
you are not using them.
If you hear distorted sound, check
these things :
• Adjust
• Change the pos ition of the transmitter
• Rotate
transmitter and then adjust
ING
away
• Adjust
so the indicator at the front of the
transmitter occasi on all y fl ickers
on the back of each
BASS
for a deeper, richer
ON
TUNING
until the interference goes
LEVEL
on the speakers
FREQ. ADJUST
on the transmitter
on the
TUN-
IF YOU HAVE
A PROBLEM
If you cannot get sound once you
have connected the system, check
these things:
• Make sure you rotate each
speaker’s
clockwise until it clicks so the
speakers are turned on
• Be sure the AC adapters are
plugged in and have power
• Be sure the audio source is
turned on and tuned to an active
frequency
• If you have connected to jacks
that are controlled by the audio
source’s volume control, be sure
the source’s volume control is
turned up
• Adjust the speaker’s volume control
• Adjust
• Change the position of the transmitter
TUNING
POWER/VOL
on the speakers
knob
ADJUSTING THE
FREQUENCY
If you receive interference from other
devices, you might be a ble to reduce
it by adjusting the speaker’s operating
frequency. Simply rotate
on the transmitter, then rotate
JUST
TUNING
dio is free from interference.
6
on each speaker until the au-
FREQ. AD-
If you still have a problem with the
speaker system, see your local RadioShack store for assistance.
40-137 2.fm Page 7 Tuesday, August 10, 1999 3:25 PM
CARE AND MAINTENANCE
Your Optimus 900 MHz W ireless Am plified Speakers are an example of s uperior design and craftsmanship. The following suggest ions will help you care for
your speakers so you can enjoy them for years.
Keep the speakers dry. If they get wet, wipe them dry immediately.
Liquids might contai n minerals that can corrode the electronic circuits .
Use and store the speakers only in normal temperature environments. Temperature extreme s can shorten the life of electronic devices and distort or melt plastic parts.
Handle the speakers gently and carefu lly. Dropping t hem can damage the circuit boards an d c an caus e t he spea ke rs to work improperly.
Keep the speakers aw ay from dust and dirt, which can cause premature wear of parts.
Wipe the speakers with a damp cloth occasionally to keep them
CLEANER
looking new. Do not use harsh chemicals, cleaning solvents, or
strong detergents to clean the speakers.
Modifying or tampering with your speaker system’s internal components can
cause a malfunction and might invalidate its warranty and void your FCC authorization to operate it. If your speaker system is not operating as it should, take it
to your local RadioShack store for assistance.
7
40-137 2.fm Page 8 Tuesday, August 10, 1999 3:25 PM
SPECIFICATIONS
TRANSMITTER
Operating Frequency Range ...................................................912.5–914.5 MHz
Power Source .................................................................18V DC, 150 milliamps
SPEAKERS
Frequency Response.....................................................................50 Hz–15 kHz
S/N Ratio ...................................................................................................55 dB
Stereo Separation ................................................................................. ≥ 20 dB
Audio Distortion ..........................................................................................
Operating Range ..............................................................150 Feet (Open Field)
Automatic Frequency Control (AFC) ................................. More than ±150 kHz
Tuning Range ....................................................................... ≥913.5 ±1.25 MHz
Minimum Volume Hum ............................................................................ < 2mV
Bass Boost Effect (100 Hz) ....................................................................8 ±2 dB
Power ....... ....................... ................. ........................ ................ ....10 Watts RMS
Power Source .................................................................15V DC, 800 milliamps
Speaker Elements .............................................. 2-Inch Tweeter, 4-Inch Woofer
≤
2%
Specifications are typ ical; in dividua l u nits m ight v ary. Spec ificat ions are s ub ject
to change and improvement without notice.
SUPPLIED ACCESSORIES
Audio Patch Cord
Y-Cable
RadioShack Limited Warranty
This product i s warranted agai nst defects for 90 days from date of pu rchase from RadioShack companyowned stores and authorized RadioShack franchisees and dealers. Within this period, we will repair it without
charge for parts and labo r. Simply
RadioShack store. Warranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage.
EXCEPT A S PROV IDED H EREIN , Rad ioSha ck MA KES NO EXPR ESS WARRA NTI ES AND ANY IM PLIED
WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states do not per mit limitation or exclusion of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the purchaser.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.
bring your RadioShack sales slip
We Service What We Sell
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
1A7 Printed in China
1
/8-to-1/4-inch Stereo Adapter
AC adapters
as proof of purchase date to an y
10/95
Loading...