Optimus AMX-25 User Manual

4
Connecting to Power
Plug the supplied AC adapter’s small
straight barrel plug into the transmit-
ter’s
DC 18V
jack. Then plug the
adapter into a standard AC outlet.
Cautions:
• The transmitter’s supplied AC
adapter (in a box marked
FOR
TRANSMITTER
) provides 18 volts
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 trans-
mitter.
•The
CHARGER
jack on the trans-
mitter is for charging the
RadioShack PRO-100 Wireless
Headphones (Cat. No. 33-1145).
Do not plug any other device into
this jack.
INSTALLING THE
SPEAKERS
Select a location for each speaker
that is near an AC outlet.
Caution:
Each speaker’s supplied
AC adapter (in a box marked
FOR
SPEAKER
) provides 15 volts and at
least 800 milliamps, and its plug’s
center tip is positive. Using an adapt-
er that does not meet these specifica-
tions could damage the adapter or
the speaker.
Follow these steps to install the
speakers.
1. Turn off both speakers by rotating
their
POWER/VOL
knobs fully
counterclockwise until they click.
2. Set each speaker’s mode switch
as follows:
L
— For the left stereo speaker
R
— For the right stereo speaker
MONO
— If your source is mono
3. Plug the AC adapter’s large right-
angle barrel plug into the
speaker’s
DC 15V 800mA
jack.
4. Plug the AC adapter into a stan-
dard AC outlet.
40-1372.fm Page 4 Tuesday, August 10, 1999 3:25 PM

Optimus AMX-25 Specifications

Transmitter Specifications

operating frequency range	912.5–914.5 MHz
power source	18V DC, 150 milliamps

Speaker Specifications

frequency response	50 Hz–15 kHz
S/N ratio	55 dB
stereo separation	≥ 20 dB
audio distortion	≤2%
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