Behringer B2030A ユーザーガイド

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TRUTH  B2030A/B2031A
Not only the physical location of speakers but also the acoustic
characteristics of the room have a substantial effect on the way
your TRUTH sounds. Make sure that the room neither sounds
too hall-like nor too dull-basically, neither like a bathroom nor
totally without an echo. You can alter the room acoustics easily
by installing or removing carpets, curtains or furniture. Fabric
covering on the wall opposite the speakers might be a good
idea if the room is too reflective. The next chapter describes
how to adapt the TRUTH to the room acoustics, once it has
been set up properly.
3.4 Adapting the TRUTH to the room acoustics
This chapter describes how you can use the switches on the
rear of the B2030A/B2031A to adapt the speaker to the acoustics
of your control room. However, you should try to improve a
potentially impaired sound by optimizing the loudspeaker
placement beforehand.
Fig. 3.4: Rear panel legending
If you are still having problems, you could try the following: The
ROOM COMPENSATION switch 
( 9 ) allows you to lower the
bass range, depending on the speaker position. Ex-factory, the
switch is set to a neutral position. If you’ve set up the TRUTH
close to the wall or in a corner, try reducing the low-frequency
level in steps of 2 dB. Since every room and speaker setup are
unique in their acoustic properties, we cannot provide more
specific information here. The same applies to the HIGH
FREQUENCY switch 
(10), which determines the tweeter level
(between +2 dB and -4 dB). Here too, the best setting depends
on the room acoustics. If you have an additional subwoofer
installed, you can attenuate the TRUTH’s lower cutoff frequency
using the LOW FREQUENCY switch 
( 8 ). This can be necessary
when adapting the TRUTH to your subwoofer. Trust your own
aural instinct, but don’t forget: Listening at high volume levels
over long periods leads to listening fatigue and thus reduces
your ability to judge the sound. Consequently, we recommend
regular pauses to keep your hearing "healthy".
As a general rule, you should set up and adjust the TRUTH with
great care. Above all, you should take your time: unlike hi-fi
speakers, the B2030A/B2031A is tuned to produce a neutral
sound, which can be confusing when you are working for the
first time with such a high-quality speaker. Don’t try to adjust
the TRUTH with its rear panel switches to produce a "bombastic"
sound that impresses you or other listeners. To get a feeling for
the TRUTH’s sound, you should listen to as many records as
possible that were produced in other studios. We also
recommend that you listen to your own recordings over as many
other systems as possible, for example, your car system. If you
find that your mixes are somewhat "dull" in their overall sound,
the reason might be too much treble from your TRUTH. On the
other hand, if you set the bass level too high, you will find that
your mixes lack bass power. Tuning a speaker can take several
days’ time, so once again: take your time!
It might be necessary to insert an equalizer between console
and speaker, in particular, if you prefer extreme setups or sound
images. The BEHRINGER ULTRACURVE PRO DEQ2496 has
proven its usefulness in practice, as it is not only a simple
equalizer but also features a real-time analyzer. You can use
our measuring microphone ECM8000 to automatically adapt the
TRUTH to your room or modify its frequency response.
4. Installation
The BEHRINGER TRUTH features one balanced XLR and one
balanced 1/4" TRS input. If connecting to other equipment is
possible using balanced inputs, always make such connections
because they offer maximal compensation of disturbing signals.
Fig. 4.1: 1/4" TS connector
Fig. 4.2: 1/4" TRS connector
Fig. 4.3: XLR connectors
4. Installation
01_EN_B2030A_0135_v03.pmd
27.06.2007, 12:44
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