Magnepan MC1 - Manual (Page 7)

For this type of installation, hook the 2 center channel MC1s in series as shown below.
If possible, use a separate amplifier on each MC1 in a dual center channel configuration.
Magnepan does not recommend hooking dual center channel MC1s in parallel (to be
operated by one center channel amplifier).
D. Rear Channel Installation
Typical rear channel installation
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