Atlantic Technology 271 LR Manuale di istruzioni - Pagina 6
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Models 271 LR, 273m C, and 274t SR
Surround Effects
The 274t SR's size and shape allows greater flexibility in placement than most surround loudspeakers. Due to
their Dipole design's spatial characteristics, it's possible to place the speakers almost anywhere within the
rear third of the room. However, the best location is straight out to the sides of, or slightly behind the
primary listening area, approximately 1-2 feet above seated ear level to 2 feet down from the ceiling.
Note: The surround speakers are intended to re-create the ambient sounds taking place in the movie scene.
Throughout most of a movie or TV program, you may not be directly aware of the surround speakers presence. So
it's OK if you aren't aware of hearing the surround speakers directly. For a more believable surround experience,
please avoid the trap of turning the surrounds up so that you're aware of them all the time. Remember, the signal
they receive is 99% subtle sounds that should make you believe you're in the action up on the screen.
The orientation of the 274t SRs is important to the proper generation of an involving and diffuse surround
effect. To insure proper orientation, make sure that the RIGHT speaker is on the right side wall of the room,
and the LEFT speaker is on the left side wall of the room, as you are seated facing the screen. The 274t SRs
are marked RIGHT and LEFT on the back and have an arrow that should point towards the front of the
room. Should you hang them on the wall, using the supplied keyhole adapters, you must turn the speakers
over (hanging them "upside down") and swap them side to side for proper orientation.
System Set Up
When setting up a complete home theater we strongly recommend that you use a Sound Pressure Level (SPL)
meter. Radio Shack
on your system, put the Processor/Receiver in the Test Mode and set its main volume control to 0dB. Sit in
the prime listening position, set the SPL meter to the 70dB scale, Slow Response, and C Weighting. Now,
holding the meter pointed up and in front of you, let the system cycle its test tone from speaker to speaker
and set every speaker to 75dB using the individual level settings in the Processor/Receiver. As tempting as it
may be to set the subwoofer and/or surround speakers higher than 75dB, try them properly set and see if you
can acclimate to it. Try watching several different movies and keep in mind that the goal is to have a system
that sounds like you're actually "in the movie".
Music Only System (Model 271 LR with subwoofer only)
If you are setting up a music only system, begin with these general guidelines:
The distance between your speakers should be approximately one-half their distance from your
favorite listening position.
If you point the front of the speakers directly towards the prime listening position, you will achieve
the most precise imaging. You will also receive the maximum amount of direct radiated high
frequency energy. If you have a "bright" or "hard" sounding room, aiming the speakers straight out
into the room (or just aiming them partially towards you) may make for a more natural and pleasing
sonic balance.
The distance from each speaker to its three closest room surfaces should be different.
In most rooms, you should not place your speakers in the corners.
The goal is to reproduce accurate musical timbre and natural sound. Additionally, a well set-up stereo pair of
speakers will create excellent imaging and a cohesive representation of the soundstage. Placement in the
room and your listening position have an enormous impact on the ultimate sound you will achieve from
your system. The most important thing is to be creative! Try placing your speakers along the long wall
instead of the short one. Toe the speakers in or point them straight ahead. Pull them away from the wall or
push them closer. Don't be timid. You'll find that moving your speakers, even a few inches, can dramatically
change and possibly improve their sound.
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has a good one that's very affordably priced (approximately $40). To use this meter, turn
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Atlantic Technology
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