Mark Feldstein & Associates SP4080 Wireless Indoor Outdoor Speakers - #SP4080 - Manual (Page 7)

TROUBLE SHOOTING
NO SOUND
Ensure the AC adaptor is fully inserted into the AC outlet and the power
connection input on the transmitter.
Ensure the speaker is switch ON.
Speaker’s battery capacity is too low, replace with new batteries or connect
the AC adaptors to the speakers.
Ensure the TV or audio component is ON.
The connected audio / video equipment is not playing. Start playing the
equipment.
The volume of speaker is too low, adjust the volume to an appropriate level.
DISTORTED
Press the “AUTO SCAN” button under the speakers until the frequency
between the transmitter and speakers are matched.
Change the position of the channel selector on the transmitter. You must
then press the “AUTO SCAN” button on the speakers.
Battery capacity is too low. Replace with the new battery.
Ensure the volume level of speakers is adjusted properly.
The speaker is too far away from transmitter, move them closer.
The input level of the audio signal is too low. Turn up the volume of the
audio source equipment.