Cables Unlimited SPK-24G - Manual (Page 8)

Specifications
Transmission Mode : UHF Stereo
Carrier Frequency : 2.4GHz Digital
Operation Voltage : Transmitter, DC 6C 300mA
Speaker, DC 12V 1.5A or 6 x D alkaline batteries (not included)
Remote Control, 1 x CR2032 button cell
Frequency Response : 30 Hz – 20 KHz
Distortion : 0.5%
S/N Ratio : 65 dB
Operation Distance : Up to 50 meters (open area)
Speaker Audio Output Power : 20W Max. (RMS)
ATTENTION:
The transmitter for this speaker set is designed to work with a wide variety of
devices. Our tests have shown the default volume levels of iPods, MP3 players and
other devices connected to the transmitter through the headphone jack does not
have the signal strength required by the transmitter. Raising the volume of your
device will increase the signal strength to the transmitter. The blue signal LED will
light when the required signal strength from your device is reached. We
recommend that you keep the volume set on your iPod or MP3 player at a minimum
of ¾ of full volume.