CAUTION – CAUTION – CAUTION
1.
FUSING: The speaker terminal plate indicates a maximum fuse value of 4 amps —
Type 3AG (“normal” or “fast blow”). As a precaution, your speakers have been shipped with 3 amp fuses installed. Never bypass, increase the value beyond 4 amps, or use “slow blow” fuses in these speakers. Our destruct tests indicate it is virtually impossible to burn out the tweeters if the above precautions are observed.
NOTE: Burned out tweeters indicate abuse and are not covered by the warranty.
2.
CAT OWNERS: It has been reported that cats will sometimes use Magneplanars for scratching posts. Should you have this problem we suggest cat repellent from your local pet shop.
Fine Tuning
1.
BASS RESPONSE: If you do not have access to test equipment play a record or CD with a repetitive bass line. Try the speakers in several positions. Begin experimenting with the speakers approximately 3 feet from the wall. While listening to the repetitive bass, move the speaker forward and backward in increments of about 6 inches. You should notice positions where the bass is stronger or weaker.
While trying di ff erent speaker placements, move around the listening area. You will notice the bass is stronger in some locations than others. This is due to standing waves in the room. You should locate your listening position and the speakers where the sound seems the most natural.
2.
TILT FEATURE: When sitting in a low chair or when seated more than 10 or 12 feet from the speakers, the speakers should be tilted forward for best frequency balance. To tilt the speakers forward, pull the top of the speaker forward to allow the fl ippers on the ends of the feet to drop down. To disengage the fl ippers simply pull the speaker forward or reach down and rotate the fl ipper over the top of the foot.
3.
STEREO IMAGING AND DEPTH: Once you have determined the best bass position, separate the speakers by 60% of the distance from your listening chair to the speakers. For example, if your chair is 10 feet from the speakers, move the speakers apart in increments of 3 or 4 inches, listening carefully at each position.
At some point you will start to hear two separate speakers instead of a “stage e ff ect.” If you have this “hole-in-the-middle” e ff ect, your speakers are too far apart. Begin moving them back together in small increments until you notice a point at which you achieve one cohesive “sound stage.” Orchestral music is good for this adjustment.
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4.
OPTIONAL TWEETER ATTENUATION: There are several reasons for possibly needing to attenuate the tweeters in the LRS:
1.
Recordings typically in the “pop” or “rock” vein often exhibit a pronounced rise in the treble region.
2.
The Magneplanar Quasi ribbon tweeter is very e ffi cient in its total energy dispersion. If the surrounding walls are exceptionally re fl ective, the overall perceived acoustical balance can be tipped toward a “hot” high end.
3.
Put A and B together and it can be unbearable.
5.
Attenuation is accomplished by placing a resistor in the attenuation position on the connection plate (see Figure 1 on next page). Provided with your speakers are 1 and 2 ohm resistors for this purpose. These resistors will provide 1 to 4 dB of attenuation.
If you continue to have a brightness problem you might consider room treatment.
6.
ROOM ACOUSTICS: A room that is overly “bright” or “alive” will usually give the sound a “blurred” or “confused” e ff ect. It can also contribute to the brightness problem mentioned above. On the other hand an overly “dead” room usually robs the sound of the aliveness and inner detail that can make you “think you are there.”
You can determine which type of room you have by doing what acoustical engineers do when they are without their test equipment—they walk around a room while making an occasional loud clap with their hands. If you do this at di ff erent locations in your room and listen to the sound that bounces back at you from the room boundaries, you can get a pretty good idea of what your room is like. If you hear a tailing “zing” after the loud clap, you can be quite certain you have a “bright” room and you may need to consider some type of wall treatment.
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