Yamaha S15e Owner's Manual - Page 3

CAUTION! For the four models, S10e, S12e, S15e and S12Me, use the TS-30, TS-40, TS-80, or TS-90 speaker stand by Ultimate Support System, Inc. sold separately. When using speaker stands, observe the following precautions to prevent the speaker stands from falling over or the speaker system being dropped. • Use the speaker stands with their legs fully opened. • Do not place more than one speaker on the same speaker stand. • Tighten fastening screws securely. • Remove the speakers from the stands before moving the stands or adjusting their height. • Implement measures to prevent the speaker stands from falling over. • Use the stand at no higher than 150 cm for all speaker models. • The top tube of the TS-30 and TS-40 speaker stands has a diameter of 1-1/2", but is tapered to 1-3/8" at the top to fit in the mounting holes on the four models named. If you should remove the top tube from a stand, be sure to insert it with the narrow end up when reassembling. Connecting the Speakers CONNECTION EXAMPLE The illustration below shows audio connections for a standard setup using two speaker systems. %"*4:$)"*/&% .*9*/( $0/40-& (3"1)*$ &26"-*;&3 - - 108&3 ".1-*'*&3 - 3 3 3 41&",&3 4:45&.4 41&",&3 4:45&.4 DAISY-CHAINING SPEAKERS Since the speaker systems in this series are equipped with two input terminals that are internally connected in parallel, it is possible "daisy-chain" speakers by connecting the output from the power amplifier to one phone jack, and a second speaker system to the other. All speaker models in this series have a nominal impedance of 8Ω. Since most power amplifiers are designed to provide stable performance at a load impedance of 4 or 8Ω, Yamaha recommends that no more than two 8Ω speaker systems be daisy-chained together. This will allow the amplifier to operate properly and avoid overheating.