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Today's electronic processors and AV receivers have built-in crossover points for small
and large loudspeaker settings. We recommend using the large setting with the R-800
left and right loudspeakers as this loudspeaker is a full range design. At this setting the
R-800 along with two R-88Subs is capable of delivering very high output in practically
any residential room. When using more than two subwoofers and when maximum
possible SPL is required or when the room is very large, you can set R800s as small.
This will relieve the R-800's woofers and allow higher undistorted output providing
there is sufficient subwoofer support in the system. We recommend setting the small
setting for R-400C center channel loudspeaker for optimum performance.
Before using your processor's auto-level set up routine (level calibration) and
automatic room EQ (where this option is available) we recommend performing a level-
balancing procedure for the R-800 and R-88Sub controls. Setting the BGA-2500 Level
knob at the 1 o'clock setting will provide balanced frequency response for the R-800
loudspeaker at 10-ft. (3 meters). In most cases your setting should not vary too much
from this recommended level. However, different receivers and amplifiers that will
power the R-800 ribbon planar array usually have different amplification factor or gain
and room acoustic parameters will affect the sound as well. Therefore it is important to
set BGA-2500 controls properly to make sure that the R-800's woofers deliver the
same output as the planar ribbon array at the listening position and overall sound is
spectrally balanced. Connect all speakers and electronics in the system as indicated
on either of the above diagrams. Set BGA-2500 controls as recommended below.
R-800:
1. Set BGA-2500 Phase control knob at 0° (Note: When used together with the R-800,
the phase knob on the BGA-2500 amplifier should always be set at 0°).
2. Set Crossover switch at 250Hz.
3. Set Level potentiometer knob at about the 1 o'clock position.
4. Sit in the primary listening location, preferably at equal distance between two
loudspeakers and not closer than 10 feet (3 m) to the screen. Turn on your test or
favorite stereo recording (preferably with vocal content) and listen to it through one
speaker (left or right). Keep adjusting Level knob to the point when the sound is
optimally balanced. To confirm the results, listen to several different recordings and
through both loudspeakers in stereo.
Processor and Amplifier Settings
BG Corp 2005
Installation
13
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