Adam Sub20 Bedienungsanleitung Seite 6

Controls and Connectors
Satellite Filter
The satellites in such a system can be driven full range or with a 85Hz high pass as
recommended by Dolby® laboratories for use in surround setups. Recommenda-
tion: If possible go with the main signal to the Sub20 first and connect your satellites to the
Sub20 output, be it XLR symmetrical or RCA asymmetrical. To prevent the satellites from
the low frequencies in most cases leads to a better sound from your satellites, as they do
not have to deliver the big amplitudes. Often clarity and dynamic range of these speakers
are improved that way.
Attention! If you switch the filter in or out, it often becomes necessary to switch the
phase as well - try it out please!
Sub Level:
Input Sensitivity control from -60dB to +6dB relative to 775mV when used via
the symmetrical XLR input or relative to 250mV when used via the asymmetrical
Cinch (RCA) input.
Sub Filter:
The upper frequency limit of the unit is variable and can be set to any value
between 50 and 150Hz. The 85Hz marker indicates the recommendation of
Dolby® labs for surround sound settings. In practice a slightly lower crossover
frequency delivers tighter bass response, for typical near-midfield monitors we recommend
a 12 or 11 clock position, meaning 70 to 75Hz as upper limit or, to be more exact, -3dB point
in the frequency response.
Please note: these settings do not have a precise character, as different satellites and different
room acoustics lead to results that cannot be foreseen. In the majority of cases there is the
danger of boominess, if you take the same say 85Hz for both the satellite and the subwoofer.
Somewhat smaller values for the sub lead to tighter and better controlled bass response.
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