Dynaudio BM 6A mkII Gebruikershandleiding - Pagina 7
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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 control works from 3kHz upwards and has a range
of 5dB (see figure 1).
LF Trim
This control allows the low frequency level to be adjusted. The control works from 100 Hz downwards and has a
range of 5dB (see figure 1). This section uses a special equalizer design which effectively swaps bandwidth for
power. As you turn the LF trim level down the low frequency extension is improved.
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 BM6A.
The right LED is the power/fault indicator. On switching the unit on this will shine red for about ten 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 BM6A 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.
Protection
The BM6A has a comprehensive electronic protection system. Thermal overload or DC voltage on the outputs will
Operation
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