HELIX PP50 DSP Handbuch Seite 22

MODE/DIP switches functionalities
The PP50 DSP MODE/DIP switches can be used to set basic functions. Major DSP settings can be activa-
ted and changed using the switches.
Note: Most of these switches are deactivated once you've installed a vehicle-specific setup file into the
PP50 DSP as the necessary settings are included as part of the setup file. Also, if you've created a setup
file using the HELIX PP50 DSP PC Tool or you are using a vehicle specific setup file, the DIP switch func-
tions change.
Important: If you use front or rear loudspeakers with an impedance of 2 Ohms, make sure that
Switch 1 is set to ON, otherwise the amplifier may malfunction.
Functionality of the MODE/DIP-Switches
with the „factory setup"
Speaker load front / rear channels
Switch 1 OFF = 4 Ohms
(Subwoofer channels can always handle 2 Ohms
loads)
Subwoofer mute
Switch 2
OFF = Subwoofer activated
ON = Subwoofer deactivated
Amplifier gain
Switch 3 Switch 4
OFF OFF
OFF ON
ON OFF
ON ON
Filter settings for front / rear channels
Switch 5 ON =
6 ON =
Switch
7 ON =
Switch
Switch 8 ON =
Switch 9 ON =
Switch 10 ON =
Time alignment
Switch 11 Switch 12
OFF OFF
OFF ON
ON OFF
ON ON
22
ON = 2 Ohms
= amp. gain +/- 0 dB
= amp. gain + 4 dB
= amp. gain - 2 dB
= amp. gain + 2 dB
+ 3dB at 16 kHz
- 5dB at 4,5 kHz Q=3,5
- 5dB at 1,8 kHz Q=7
+ 4dB at 1 kHz Q=4
- 5dB at 200 Hz Q=7
+ 3dB at 60 Hz
= deactivated
= small cars
= mid sized cars
= large cars
Highpass filter front channels
Switch 13 Switch 14
OFF OFF
OFF ON
ON OFF
ON ON
Highpass filter rear channels
Switch 15 Switch 16
OFF OFF
OFF ON
ON OFF
ON ON
Subwoofer
Switch 17 OFF = 12 dB slope
ON = 24 dB slope
Switch 18 Switch 19
OFF OFF
OFF OFF
OFF ON
OFF ON
ON OFF
ON OFF
ON ON
ON ON
cutoff frequency
= linear
= 100 Hz / 12 dB
= 75 Hz / 12 dB
= 50 Hz / 12 dB
cutoff frequency
= linear
= 100 Hz / 12 dB
= 75 Hz / 12 dB
= 50 Hz / 12 dB
Switch 20 cutoff freq.
OFF = linear
ON = 120 Hz
OFF = 100 Hz
ON = 90 Hz
OFF = 80 Hz
ON = 70 Hz
OFF = 60 Hz
ON = 50 Hz