Table Of Contents - HELIX PP50DSP Operating Instructions Manual

Contents
System requirements ...................................................................................... 3
Installing the HELIX DSP PC-Tool Software .................................................. 4
Connecting the PP50 DSP to the PC ............................................................. 6
Connecting the C-DSP/P-DSP to the PC ....................................................... 7
Starting the software ....................................................................................... 8
Operating controls ........................................................................................ 10
Description of the main navigation menu .......................................................... 10
Channel selection .......................................................................................... 12
Linking channels: .............................................................................................. 12
Channel routing - configuring inputs and outputs ..................................... 13
Naming inputs: .................................................................................................. 13
Naming outputs: ................................................................................................ 14
Default settings of the individual channel types: ............................................... 14
Allocating inputs to outputs: .............................................................................. 15
High and low-pass filter settings ................................................................. 17
Crossover frequency ......................................................................................... 17
Filter characteristics .......................................................................................... 17
Butterworth
Bessel
Linkwitz
Chebyshev
Self-define
Slope ................................................................................................................. 19
Q-factor ............................................................................................................. 21
High-pass and low-pass filter bypass function .................................................. 22
Adjusting the output levels .......................................................................... 23
Adjusting the phasing and time alignment ................................................. 24
Adjusting the phase .......................................................................................... 24
Adjusting the time alignment ............................................................................. 25
Adjusting the equalizer ................................................................................. 27
Graphic 1/3 octave equalizer ............................................................................ 27
PP50 DSP: Parametric filter ............................................................................. 28
P-DSP: Graphic equalizer fine adjustment function .......................................... 29
C-DSP: Graphic equalizer fine adjustment function ......................................... 30
Measuring frequency responses ................................................................. 31
Measuring equipment ....................................................................................... 31
Measuring microphone
Suitable preamplifiers
Suitable measurement signals
Measurement software ..................................................................................... 32
Appropriate car radio settings for taking readings
Frequency response readings .......................................................................... 34
Important information about the PP50 DSP ...................................................... 36