20
Ultra HD Class D amplifier technology
Compared to conventional Class D amps, this con
-
cept achieves an extended frequency response to
more than 40 kHz in combination with reduced dis-
tortion thanks to an advanced integrated feedback
design. Ultra HD Class D achieves outstanding,
“Class AB-like” sound quality combined with the ef-
ficiency of a Class D amplifier.
Signal converters with a native resolution of
32 Bit
The HELIX P TWO uses for the optical input a high-
class DA signal converter of the latest generation
with a native resolution of 32 Bit instead of the com
-
mon 24 Bit. The result is an unprecedented preci-
sion in signal conversion that especially optimizes
the sound quality at lower signal levels.
Smart highlevel input
The latest generation of OE car radios incorpo-
rates sophisticated possibilities of diagnosing the
connected speakers. If a common amplifier will be
hooked up failure messages and loss of specific
features (e.g. fader function) quite often appears -
but not with the P TWO.
The new ADEP circuit (Advanced Diagnostics Error
Protection) avoids all these problems without load
-
ing the speaker outputs of the OE radio during high
volumes unnecessarily.
Start-Stop capability
The switched power supply of the HELIX P TWO
assures operation even if the battery’s voltage
drops down to 6 Volts during engine crank.
there are e.g. noises while switching on/off the
amplifier.
Note:
If the automatic turn-on function is deac-
tivated it is mandatory to use the remote input
terminal to power up the amplifier! The highlevel
signal will be ignored in this case. To deacti-
vate the automatic turn-on feature you have to
change the position of the
Auto Remote
switch
to “Off”.
9. Connecting the loudspeaker outputs
The loudspeaker outputs can be connected
directly to the wires of the loudspeakers. Never
connect any of the loudspeaker cables to the
chassis ground as this will damage your ampli-
fier and your speakers. Ensure that the loud
-
speakers are correctly connected (in phase),
i.e. plus to plus and minus to minus. Exchang
-
ing plus and minus causes a total loss of bass
reproduction. The positive terminal is indicat
-
ed on most speakers. The impedance of each
channel must not be less than 2 Ohms, other-
wise the amplifier protection will be activated.
In addition the speaker outputs can neither be
bridged nor connected in parallel!
Examples for speaker configurations can be
found on page 21.
Installation
Unique Features of the HELIX P TWO
Summary of Contents for P TWO
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