HEDD 20 MK2, Operation Manual, Page: 16 / 22

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Input Selection
This 4-position rotary switch selects which signal to reproduce.
“Analog” takes an analog signal from a symmetrical source.
The other 3 positions refer to an incoming digital AES signal. Left,
Right or Mono can be extracted from the data.
For multi-channel audio that exceeds
stereo, for example 5.1 surround sound,
the monitors have to be fed through
the analog XLR input.
Input Sensitivity
The “Input Sensitivity” rotary switch levels the voltage of the analog input. It can be used
to optimize the signal to noise ratio for the A/D converter. In case of weak input signals
the gain can be added for up to +4 dB. In case of very loud signals (>2 V) either -4 or -10
dB gain reduction can be applied to avoid an A/D converter overload.
The setting has no effect when the signal is received through the digital AES input.
Desk Filter
Monitors sitting on meter bridges or desks may suffer by early reflections from the desk
surface that potentially blur the sound. The “Desk Filter” is a 3-position PEQ (Parametric
Equaliser) that minimizes the effect. Please note that we cannot give an exact
recommendation because the acoustical environments play a vital role. Please find out
in how far these filters may improve the sound.
ANALOG/AES INP. SENS. [dB] DESK FILTER
M
ONO L
EFT
A
NALOG
R
IGHT
ANALOG IN AES IN AES THROUGH
1
3
2
PUSH
1
3
2
PUSH
Small up to 80 x 150 cm [d x w]
Med. up to 100 x 180 cm [d x w]
Large for larger consoles or desktops