User manual MAGNEPAN MMC 2

[. . . ] However, there are general guidelines to follow. Choose a placement that will position the MMC 2s as far from a corner as possible - preferably more than 3 or 4 feet and the further, the better. We want you to be a satisfied customer and this is a critical issue for good sound. This is especially important for the front channels. [. . . ] 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 woofer, this peak will be reduced in level. Place the Magneplanar Woofer (or subwoofer) next to the MMC 2s (It is much easier to detect an out-ofphase condition when the "small" speaker is physically next to the Woofer. ) A technique which can aid in determining if the phase is correct is by leaning over and positioning your head equidistance between the Magneplanar Woofer and the "small" Magneplanar as shown in Fig. 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 Woofer 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 woofer around. However, depending on where the woofer is placed, it is possible for the MMC 2s and the woofer to be 90 degrees out of phase with the woofer. 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. 6. Speaker Angle Adjustment For the best sound, the MMC 2 should be angled so that the panel is on-axis with the listener with a minimum distance from the wall of 30 degrees. (Use of the MMC 2 as a dual center channel speaker requires slightly different adjustments. Contact Magnepan for dual center speaker installations). Pull the MMC 2 out until you feel the resistance of the Cam/Stop. Insert the long 5/64 inch allen wrench into the Cam/Stop at the bottom of the speaker as shown in Fig. 1 and 2 below and loosen the allen screw. [. . . ] 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. 8. Tweeter Level Control 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. 9. Service and Shipping In the unlikely event you should need service for your MMC 2s, we recommend you return it through your dealer. [. . . ]