Owner's manual

phasing between the MMC 2s and your Bass Panel. The pink noise CD is "shaped" with a 9 db peak at
80-100 Hz. This aids in the detection of an out-of-phase condition. This peak in the midbass focuses the
attention of the listener on this area of the frequency response. When the MMC 2s are out of phase with the
Bass Panel, this peak will be reduced in level. Place the Magneplanar Bass Panel (or subwoofer) next to
the MMC 2s (It is much easier to detect an out-of-phase condition when the "small" speaker is physically
next to the Bass Panel.)
4. A technique which can aid in determining if the phase is correct is by leaning over and positioning your
head equi-distance between the Magneplanar Bass Panel and the "small" Magneplanar as shown in Bass
Panel manual. The left and right ears are equi-distance to the respective speakers. High frequencies will
appear to be up and low frequencies will appear to be down. The 90-100 Hz peak, if in phase, will appear
to be in the middle (and louder). Since the Magneplanar Bass Panel is a dipole, the rear wave is out of
phase with the front wave. To reverse the phase for a phase test, simple turn the Maggie Bass Panel around.
5. However, depending on where the Bass Panel is placed, it is possible for the MMC 2s and the Bass Panel
to be 90 degrees out of phase with the Bass Panel. This will result in little or no difference in loudness of the
peak as the phase is changed. Usually, this means that the woofer is not placed at the correct distance
relative to the MMC 2s. Many powered woofers have continuous phase shift adjustments to correct this
problem without moving the woofer, although changing the location of the woofer is the preferred solution.
M. Bass Management and Processor Settings
1. The MMC 2 is a "small" speaker with limited midbass response. A high-pass filter is required for the
operation of the MMC 2s to roll off the bass frequencies to the MMC 2s. The Magneplanar XO 2 passive
crossover can be used with the MMC 2s or if a processor is being used, the processor can be set for
"small" speaker.
2. The lower frequency response of the MMC 2 depends, to a large degree, on the room acoustics and where
the MMC 2s are used in the room. For example, a front wall placement of the MMC 2s will result in less
midbass and therefore require a higher crossover point. A side wall placement of the MMC 2s in a shoe-
boxed shaped room (when placed about 4 feet or more from the front wall) will give the deepest midbass
response. Crossover points may vary from 100 Hz to as high as 160-200 Hz, depending on all the variables.
N. Tweeter Level Control
1. A rocker switch is located on the back of the speaker near the top (in the crossover region). Depressing the
switch to the right will give maximum high frequencies. Depressing the switch to the left will reduce the high
frequencies with a 1 ohm resistor.
Revised- 1-16-13