Audient ASP2802, Operating Manual

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Page -19- © Audient Ltd
Peak Reading Bargraph Meter
A 10-segment LED bargraph meter with peak detection and a
separate overload indication LED, suitable for use in today’s
modern digital recording environment.
6 dB per segment in the lower region of the meter (-36 to -18
dB) and 4 dB per segment in the middle region (-18 to -6 dB)
with 2 dB per segment in the top region of the meter for greater
resolution.
0VU is the centre of the scale and calibrated to a nominal
operating level of +4 dBu. Which in turn is relative to a typical
EBU calibration of +18 dBu = 0 dBFS. 0 dBFS is your absolute
maximum digital level (full scale) and should be avoided at all
costs - digital clipping is not a pleasant sound.
As such the bargraph meter scale on ASP2802 is calibrated in
dBFS, such that +4 dBu = 0VU = -14 dBFS. Therefore, a nominal
operating level of 0VU will result in 14 dB of headroom in your
digital recording platform (providing your AD/DA converters are
aligned to 0 dBFS = +18 dBu.
14 dB of headroom is very useful as most music sources (except
for the huge dynamic range of an orchestra) have crest factors
(the difference between average [RMS] and peak level) of around
12-20 dB. Therefore ASP2802 provides some headroom for your
beautifully crisp transient sources.
Channel Strip