HELIX P ONE MK2

17
en
7. Connecting the loudspeaker outputs
The loudspeaker outputs can be connect-
ed directly to the wires of the loudspeakers.
Never connect any of the loudspeaker cables
with the chassis ground as this will damage
your amplier and your speakers. Ensure that
the loudspeakers are correctly connected (in
phase), i.e. plus to plus and minus to minus.
Exchanging plus and minus causes a total
loss of bass reproduction. The plus pole is
indicated on most speakers. The impedance
must not be lower than 1 Ohm, otherwise the
amplier protection will be activated. Exam-
ples for speaker congurations can be found
on page 19 et sqq.
8. Optional: Activation / deactivation of the
internal subsonic lter
The P ONE MK2 is equipped with a switch-
able 21 Hz subsonic lter. The lter can be
activated or deactivated inside the device.
On: Subsonic lter activated (by default).
O󰀨: Subsonic lter deactivated. The subsonic
lter should only be deactivated if the am-
plier is driven by a digital signal proces-
sor (DSP) or DSP amplier. In addition,
a subsonic (highpass) lter with a cut-o󰀨
frequency of min. 20 Hz and a slope of
min. 36 dB/octave (Butterworth character-
istic) must be provided in the signal path
of the preconnected DSP / DSP amplier.