Speaker Impedance - Yamaha XS250 Owner's Manual

Speaker Impedance

In STEREO and PARALLEL modes, the minimum load (i.e., speaker) impedance is 4 . In BRIDGE mode it is 8 .
Make sure that the impedance does not fall below this specified impedance.
Using the barrier strip and binding posts simultanuously
STEREO mode connections:
PARALLEL mode connections:
BRIDGE mode connections:
MODE
BRIDGE
STEREO PARALLEL
Set to STEREO
MODE
BRIDGE
STEREO PARALLEL
Set to PARALLEL
MODE
BRIDGE
STEREO
PARALLEL
Set to BRIDGE
SPEAKERS
+ +
– –
– + + – –
Each speaker
min. 8
SPEAKERS
+ +
– –
– +
Speaker
min. 16
– + + –
+ + –
Each speaker
min. 8
– + + –
– +
Speaker
min. 16
7