Control Elements - SPL HPm Manual

Control Elements

Phase Ø
With the phase inversion switch the phase the of the left or right channel can be
inverted (180°).
Stereo/Mono/Mute
The audio signal can be switched between stereo and mono. In the Mute position, the
headphone outputs are muted.
Crossfeed
The Crossfeed parameter of the HPm is continuously adjustable via the crossfeed
control.
Matrix On/Off
With the Matrix switch, the Phonitor Matrix (Crossfeed, Speaker Angle, Center Level)
can be activated or deactivated.
Speaker Angle
The Angle parameter can be adjusted in three settings: 20°, 30° and 40°. The studio
standard is 30°.
Center Level
To make the listening experience even more perfect, the level of the center of the
stereo image needs to be attenuated when the Phonitor Matrix is active. This ensures
that not only the position of all sound sources is correct but also their volume. With
HPm, this parameter, which we call "Center" in the Phonitor Matrix, can also be
adjusted in three settings. You can choose between an attenuation of -0.5dB, -1 dB or
-1.5 dB. The standard for an authentic representation of the stereo image is -1 dB.
HEADPHONE AMP 1
With the Volume poti for the HEADPHONE AMP 1 the volume for headphone 1 can be
adjusted.
HEADPHONE AMP 2
With the Volume poti for the HEADPHONE AMP 2 the volume for headphone 2 can be
adjusted.
4 HPm – 500 Series