User manual MAGNEPAN 1.7

[. . . ] Install the spacers on the bottom mounting bolt to tilt the speaker backwards. The amount of angle will be dependent on your particular listening conditions. Under most conditions, stacking 2 spacers will be adequate; however, some experimentation may be necessary. The 8 mounting bolts are installed in the speakers. [. . . ] BURNED OUT TWEETERS ARE NOT COVERED UNDER THE WARRANTY. 8. Speaker Placement Proper speaker placement and room acoustics can have a greater effect on a music system than upgrading one of the components in the system. Unfortunately, there is no definitive guideline which will cover all possible listening rooms. Some experimentation is required for locating the optimum position. The following are a few general guidelines: 9. Bass Response Play a CD with repetitive bass. Try the speakers in several possible locations in the room. Begin experimenting with the speakers about 3 feet from the front wall. Try moving the speakers forward or backward in increments of 6 to 12 inches. One position in the room should be noticeably better than others. Also experiment with your listening location to avoid standing waves. 10. Stereo Width and Imaging Once you have located the best position for the speakers and your chair for bass performance, separate the speakers by 50-60% of the distance from your chair to the speakers. For example, if your chair is 10 feet from the speakers, move the speakers 5-6 feet apart. Now, move the speakers apart in increments of 3 or 4 inches at a time, listening carefully at each position. At some point you will start to hear two separate speakers instead of a stage effect or continuous image. When this occurs, your speakers are too far apart. Begin moving the speakers back in small increments until you notice a point at which you achieve one cohesive sound stage. For best imaging, angle the speakers so they are on axis with the listening position as shown in Fig. 1 11. Left/Right The 1. 7's are matched pairs and mirror-imaged. The serial number for each speaker in the pair is the same, except for a "1" or "2" following each serial number. As you face the front of the speakers, the speaker with the serial number ending with the "1" after its serial number has the tweeter near the left edge, and the speaker serial number ending with the "2" has the tweeter near the right edge. Depending upon the acoustics of your room, the imaging and sound stage will be better with the tweeters on the inside or the outside. 12. Phasing The Magneplanar 1. 7 has superior phase characteristics. We suggest you resist the tendency to place the speakers so they are parallel to the front wall. For optimum phasing, the speaker should be on axis with the listening position as shown in Fig. This requires a certain degree of toe-in, especially if the speakers are placed with the tweeters on the inside. [. . . ] The Magneplanar Quasi Ribbon Tweeter is very efficient in its total energy dispersion. If the surrounding walls are exceptionally reflective, the overall perceived acoustical balance will be tipped towards a "hot" high end. Attenuation is performed through insertion of a resistor in place of the jumper. The pair of 1 ohm resistors will attenuate the tweeter1-2 dB. [. . . ]