Dynaudio BM Посібник користувача - Сторінка 7

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Dynaudio BM Посібник користувача

Operation

Controls
Level switch
This sets the input sensitivity of the unit. The +4 position is intended for professional use and means that full
power is reached with an input level of +4dBm (balanced). The -10 position is intended for semi-professional or
domestic use and means that full power is reached with an input level of -10dBm (unbalanced).
HF Trim
This control allows the high frequency level to be adjusted. The HF Trim circuit is a low-Q equalizer which reaches
a maximum range of 6dB @ 15kHz (see graph).
LF Trim
This control allows the low frequency level to be adjusted. The LF Trim circuit is a low-Q equalizer which reaches a
maximum range of 6dB @ 50 Hz (see graph).
The trim controls are intended to allow the user to make some adjustment of the speaker response to
accommodate personal tastes and variations in acoustic environment.
Figure 1: Trim Control Response
Indicators
There are two LED indicators on the front baffle of the BM15A.
The right LED is the power/fault indicator. On switching the unit on this will shine red for about five seconds and
then turn green to indicate normal operation. If for any reason the amplifier protection circuitry is engaged the LED
will turn back to red.
The left LED is a "true-clip" indicator and lights if the low frequency amplifier clips. It is acceptable to have this LED
light up occasionally, but avoid running your system with this LED on most of the time.
Running in
The drivers in your BM15A must be run in before optimum performance is achieved. Avoid using the system at
high levels for the first 24 hours of operation. Full run-in is usually achieved after about one week of normal
operation.
Operation
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