Steren AMP-210SD Manual De Instrucciones página 24

3. For connect the speakers there are different ways for example:
+
-
+
-
10
- Two 8 Ω speakers in parallel to get an
impedance of 4ohms
- Two 8 Ω speakers in serial to get an impedance
of 16ohms
- Four 8 Ω speakers in serial/ parallel to
get an impedance of 8ohms