Magneplanar 3.7i Instruction Manual 1. Introduction 3 2. General Description 3 3. Carton Contents 3 4. Packaging 3 5. Assembly 4 6. Hookup 5 7. Caution 5 8. Speaker Placement 5 9. Bass Response 6 10. Left/Right 6 11. Stereo Width and Imaging 7 12. Phasing 8 13. Room Acoustics 8 14. Optional Tweeter or Midrange Attenuation 9 15.
Magneplanar 3.7i Instruction Manual Quick Step-Up Instructions The 3.7i has exceptional phase characteristics that are accomplished without the use of compensation networks. To realize the optimum phasing, the 3.7i should be angled inward as shown in the diagrams in the manual. (Do not place parallel to the front wall.) The most precise imaging for a single listener is with the tweeters on the inside. For a larger “sweet spot” and multiple listeners, place tweeters on the outside.
1. Introduction Congratulations on your purchase. The Magneplanar 3.7i loudspeaker was conceived and designed by perfectionists, for perfectionists. Due to the elegant simplicity and ruggedness of the design, the Magneplanar 3.7i loudspeaker will give many years of trouble-free service. 2. General Description The 3.7i is a 3-way, full-range ribbon design with a quasi-ribbon bass and midrange, and true-ribbon tweeter. 3. Carton Contents • 1 pair 3.
5. Assembly This will require the help of an assistant. Lay the speaker face down on a fabric-covered table, or as an alternative, carefully lay the speaker on its side. Attach the L-shaped brackets to the oval base and to the speaker panel using only the two bolts as shown in the diagram. Next, install the supporting braces with the remaining 2 bolts for each bracket. To prevent cross-threading the bolts, install by hand before using a screw-driver. Do not use power tools.
6. Hookup The 3.7i features unique, high current connectors which provide optimum contact area with the speaker cables up to 10 gauge (or for banana connectors). Simply strip 1/2" of insulation from the end of the cable. Insert the cable into the terminal (observing polarity), and tighten the set screws with the Allen wrench provided. Banana plug connectors can be used and locked in place with the set screws.
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. Need more bass? Most of the area of any full-range Maggie is devoted to bass reproduction. (In the case of the 20.
11. 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.
12. Phasing The Magneplanar 3.7i 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 speakers should angled as shown in Figures 1 or 2. Once you have located the ideal speaker position, a mark is helpful for quickly replacing the speakers.
14. Optional Tweeter or Midrange Attenuation To attenuate the tweeter or midrange, remove the jumper(s) and install a resistor. The 1 ohm resistor is the standard tweeter and midrange resistor values. Other tweeter and midrange resistor values are available from your Magneplanar dealer. In addition to the tweeter resistor, installing the 1 ohm midrange resistor will also provide a “warmer” balance. 15.
