Yamaha BR15 User Manual

ENGLISH

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 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.

S T   O U T

L

R

MIXING
CONSOLE

GRAPHIC
EQUALIZER

POWER
AMPLIFIER

SPEAKER
SYSTEMS

HOT(+)

COLD(–)