McIntosh MC451

12
The MC451’s crossover tailors the output


knob to the loudspeaker’s published crossover point.
Frequencies below the crossover point will be sent


CROSSOVER
(MONO MODE)
300
250 400
550
180
130 800
1k100
CROSSOVER POINT
Hz
+1.2
-3
+3-6
0
VACUUM TUBE LEVEL
dB

adjustments to be made to the vacuum tube ampli
-

the low end of the loudspeaker and the mid/high
range.

gain adjustments from -6dB to +3dB. The knob has
a center detent to mark the point of 0dB gain, but
adjustments are continuous from -6dB to 0dB and
0dB to +3dB.
Setting Up the Crossover