Speaker A Speaker B - Mesa/Boogie Dual Rectifier Road King Amp Owner's Manual

SPEAKER IMPEDANCE MATCHING & HOOK-UP GUIDE: (Continued)
PARALLEL:
When wiring in parallel, the resistance of the speakers decreases. Two 8 ohm speakers wired in ( hooked-up ) Parallel results in a 4
ohm load. It's easy to calculate the effect of a resistive load when all the speakers are all the same resistance. It is really not suggested
to wire different resistive load values in Parallel ( 8 and 4, 16 and 8 etc. ) The formula for figuring the total impedance in Parallel is the
multiplication of the two loads divided by the sum of the two loads - i.e. putting two 8 ohm speakers in Parallel results in a 4 ohm load.
Connect the Positive side of Speaker A to the Positive side of Speaker B - Connect the Negative side of Speaker A to the Negative
side of Speaker B.
Speaker A
8 Ohms
COMBINATION OF SERIES & PARALLEL:
This is really just two sets of Parallel wired speakers connected in series. This is how you maintain a consistent load with multiple
speakers. The importance of this is more evident when you have more than one cabinet to connect to your amplifier. This is when you
All 4 Spkrs.are 8 Ohms
SPEAKER A
Made by
Electro-Voice
SPEAKER C
Made by
Electro-Voice
POSITIVE
Made by
Electro-Voice
Total Load = 4 Ohms
SPEAKER B
Made by
Electro-Voice
SPEAKER D
Made by
Electro-Voice
NEGATIVE
Made by
Electro-Voice
need to figure out the loads and how to wire them up with-
out applying too low of a resistance on the amplifier.
Simply connect the Positive side of Speaker A to the Posi-
tive side of Speaker C.
Connect the Negative side of Speaker A to the Positive
side of Speaker B, then on to the Positive side of Speaker
D and finally on to the Negative side of Speaker C.
And lastly, connect the Negative side of Speaker B to the
Negative side of Speaker D.
4 Eight ( 8 ) Ohm speakers wired in Series Parallel = a
Total Load of 8 Ohms.
PAGE 39
Speaker B
8 Ohms
NEGATIVE
POSITIVE