Yamaha Portable Speaker BR12M User Manual

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ENGLISH
4
Connecting the Speakers
Full-range Connection
Each speaker features two input / parallel connectors — two 1/4" phone jacks. Use one phone jack to receive
input from your sound system / power amplifier. The other phone jack can be used to parallel-connect an addi-
tional speaker (keeping in mind the impedance considerations mentioned below).
Impedance Considerations
When connecting speakers in parallel be sure to check
the rated load impedance of the power amplifier. Most
power amplifiers are capable of safely driving speakers
with minimum impedance of 8 ohms or 4 ohms. A pair
of parallel-connected 8-ohm speakers have a total
impedance of 4 ohms. Two 8-ohm speakers can safely
be paralleled on one output. 4-ohm speakers, however,
should not be parallel-connected with other speakers.
These models can be connected in parallel, however, if
you are using a power amplifier that can safely drive
load impedances of 2 ohms or lower. Check your
speaker impedance on page 18.
Phone Plug Wiring
Phone plugs for connection to the phone jack inputs should be wired as
shown to the right. Be sure to use proper speaker cable — NOT shielded
instrument or line cable — for all speaker connections.
ST OUT
L
R
MIXING
CONSOLE
GRAPHIC
EQUALIZER
POWER
AMPLIFIER
SPEAKER
SYSTEMS
HOT(+)
COLD(–)

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