Installing the HELIX DSP PC
Contents
1. 40d6 Fig 6 Q factor effect for the low pass 100B OcdE 10c0B Zu0cdB S0d6 40d06 21 22 Important information about the PP50 DSP If you are using the PP50 DSP with the PP 7E or PP 7S subwoofers please adjust the subwoofer channel high pass filter settings as follows e Crossover frequency 49 Hz e Characteristics Self Define e Q Factor 1 5 High and low pass filter bypass function Use the bypass button to completely bridge the effect of a high or low pass filter with a single push of a button to obtain a simple acoustic comparison with and without filter Important information In fully active systems do not simply bypass the tweeter high pass filter Without any frequency crossover irreparable damage may be caused even at low volumes Bridging a low pass filter on the other hand is generally uncritical and will not result in any damage to the loudspeaker Adjusting the output level The output level of each of the channels may be adjusted using the Output level slide control This increments depend on the governor setting The 10 to 5 dB band has increments of 1 dB the 30 dB to 10 dB band increments of 2 dB and that below 30 dB has increments of 6 dB The exact value is also indicated on the scale next to the slide control and as an absolute value above the slide control When adjusting the slide control values greater than 02. ys bu3 DPHELIX GERMAN CAR HIFI HELIX DSP PC Too l Software Operating Instructions Version June 2011 Contents System requirements cccccc cece ecceeeceeeceeeeceeeeceeeegeceesueeseeeeeeseeteeeseesaeeess 3 Installing the HELIX DSP PC Tool Software 0222024002002202 220 4 Connecting the PP50 DSP to the PC ec cceeceeeeeeeeeeeeeeeeenes 6 Connecting the C DSP P DSP to the PC 22002202200220220 200 7 Starting the SOFWAILE ccc cece cece eeeseeteeeeeceeeaeeeseeseeeeesaeeaeenesseesaeenas 8 Operating controls ccc ec cece eee eeeseeeeeeteeeeeeeeeeseceeeeeeeeeseeeeeeneetseeneeeaaes 10 Description of the main navigation MENU cece secceecceeeceeceeeeeeeeeeeeeeeeeeeeeeas 10 Channel Selection c cece cece cece eeceeeceeeceeeceeeseeeseeeseeeseeeeseeeeesseeseeesaees 12 Linking channels seen nn ae can nern Een era eeqacenstaeceaemncaeh 12 Channel routing configuring inputs and outputs 2 13 Aamin IMPUS Pre EEE a EE E ERNE 13 Naming OU US oe sanieren anne enden en teens 14 Default settings of the individual channel tyPeS cccccceecceeeseeeeeeeeeeseeees 14 Allocating inputs to OUND US en nennen 19 High and low pass filter settings 2 2202202220220220000 Ben nnennnnnnen nenn 17 Crossover WG SCY zen ee een 17 Fiter CAA CISTI SHC S rec a
3. Now use the HELIX DSP Tool equalizer to adjust the frequency response so that it matches EG Plot praxis gt gt gt ATA Spectrum acq 14 01 2011 14 21 39 the reference curve as closely as possible This is an iterative process whereby the equalizer is first adjusted before further measurements are taken However you will see that the desired result is usually achieved after just a few attempts Bear in mind that the Praxis measurement software is set up so that the frequency response is measured in the same 1 3 octave intervals with the same center frequencies you set in the HELIX DSP PC Tool equalizer e We recommend you link the two front channels so the right and left hand front channels can be adjusted simultaneously Individually optimizing each channel is only recommended in rare circumstances Audiotec Fischer always adjusts the vehicle specific setups of the left and right hand channels in the PP50 DSP in an identical manner thereby avoiding adjusting the chan nels separately e When adjusting the frequency response avoid large boosts large cuts pose no problems however e Do not attempt to balance out deep narrow band dips in the frequency response Such dips are nearly always caused by out of phase signal cancellations and it is not possible to sufficiently compensate for them The human ear does not usually perceive these signal cancellations as disturbances e Strong narrow band gain in measured fre
4. system Do not forget to save this configuration to your PC using the Save button and transfer it to the memory of the amplifier using the Store DSP button 35 36 Important information about the PP50 DSP If you are using the PP50 DSP with the PP 7E or PP 7S subwoofers please use the following settings for the subwoofer channel high pass filter crossover frequency 49 Hz characte ristics Self Define Q factor 1 5 Begin with a suitable setting for the subwoofer channel low pass filter A good initial value in this respect is a crossover frequency of 80 Hz with a slope of 24 dB and a Butterworth charac teristics In many cases it is useful to relieve the front and rear loudspeakers from low frequencies using a high pass filter The following settings have proven to meet the operational requirements for the various loudspeaker sizes LS 6x9 or 20 cm LS high pass filter 12 dB Butterworth crossover frequency 40 Hz16 5 cm LS high pass filter 12 dB Butterworth cross over frequency 50 Hz13 cm LS high pass filter 12 dB to 18 dB Butterworth crossover frequency 70 Hz 10 cm LS high pass filter 18 dB to 24 dB Butterworth crossover frequency 80 100 Hz Now set the phase control and the output level of the subwoofer channel so there is a harmo nious balance between the front rear channels and the subwoofer even without the help of the equalizer If it is not possible to achieve an even frequency response i
5. PH Frequency Hz Characteristic PP Characteristic Fr Slope dB Oct Fr Slope dB Oct PP Q Factor Q Factor This section makes it possible to configure almost any type of high pass and low pass filter for the selected channel When doing so the following parameters are adjusted separately crossover frequency filter characteristics slope and the Q factor The functions of the individual parameters are described below Crossover frequency Frequency Use the slide control to select the required crossover frequency for the high pass or low pass filter PP50 DSP Itis possible to adjust the front and rear channels in 1 6 octave increments from 20 Hz to 20 480 Hz The subwoofer channel high pass may be adjusted between 20 Hz and 100 Hz and the low pass from 20 Hz to 150 Hz in increments of 1 Hz P DSP It is possible to adjust the full range channels in 1 12 octave increments between 20 Hz and 20 480 Hz The high pass may be adjusted between 20 Hz and100 Hz and the low pass between 20 Hz and 150 Hz in increments of 1Hz C DSP It is possible to adjust the full range channels in 1 24 octave increments between 20 Hz and 20 480 Hz The high pass may be adjusted between 20 Hz and100 Hz and the low pass between 20 Hz and 150 Hz in increments of 1Hz Filter characteristics characteristics There are four different filter characteristics available for selection and the option setting your own high pass and low pass filter using Self Defin
6. R Fullrange Front R Tweeter Front R Midrange Front R Woofer Center Fullrange Center Tweeter Center Woofer Rear L Fullrange Rear L Tweeter Rear L Midrange Rear L Woofer Rear R Fullrange Rear R Tweeter Rear R Midrange Rear R Woofer Rear Fill Subwoofer 1 Subwoofer 2 Default high pass Channel output muted 3000 Hz 12 dB Butterworth 500 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 500 Hz 12 dB Butterworth 200 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 500 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 500 Hz 12 dB Butterworth 200 Hz 12 dB Butterworth Default low pass 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 3000 Hz 12 dB Butterworth 80 Hz 24 dB Butterworth 80 Hz 24 dB Butterworth Please note These default settings may of course be modified in the DSP main menu They are only used to protect the connected loudspeaker and are not recommendations for correct settings Allocating inputs to outputs In the center of the input mask you can allocate any of the input signals to each of the eight out puts A H You can also use either the right or left mouse button to make this selection 1 Front L Full Front L Full Front L Full H Front L Full a B Front A
7. dB must be avoided otherwise there is a risk of overloading the amplifier signal processor Ensure that the red area of the level indicator is never visible at any volume This may possibly occur if you have used the full boost of 6 dB in an equalizer frequency band for example The red bar in the level indicator is a clear sign that the signal processor is overloaded which may cause a dramatic and sudden rise in the distortion factor In contrast to an analog amplifier which overloads slowly the digital amplifier stages are comparably very intolerant Digital overmodulation sounds extremely uncomfortable and may quickly damage the connected loudspeaker tweeter It is therefore preferable to set the quietest channel to O dB and adjust all other channels downwards accordingly until the volume balance meets your requirements Muting an output channel Mute The mute button is used to mute the output of a channel Clicking on this function again takes the channel off mute Bypassing the equalizer and the time alignment Bypass MES Activating the Bypass button on the left next to the Output Level slide control bypasses the graphic 1 3 octave equalizer the parametric filter the fine EQ functions and the time alignment settings The Bypass may be removed by clicking on the function for a second time 23 Adjusting the phasing and time alignment Calculate Calculate Dey Time ali
8. list of components and software have been tested by us and judged to meet the operational requirements e Behringer ECM8000 measuring microphone e T BONE Micplug USB microphone USB interface with phantom power e Praxis measurement software from Liberty Instruments freeware e A music CD containing a pink noise test signal Further information can be found under Recommended measuring equipment quency responses and Operating the measurement software Measuring fre Installing the HELIX DSP PC Tool software In order to use the HELIX DSP PC Tool software you must first install it on your PC according to the following instructions e Important Ensure that the processor and or USB interface are not yet connected to your computer Only connect the processor and or USB interface once the software has been suc cessfully installed on the computer e Download the compressed zip file HELIX DSP PC Tool zip from the Audiotec Fischer website www audiotec fischer de The file can be found under the PC Tool tab AUDIOTEC FISCHER INNOVATIVE CAR AUDIO Start News Unternehmen Produkte PC Tool Kontakt Testberichte Download Suche gt Einf hrung Hinweis Fiktereinstellungen Diese Software dient zur Konfiguration des P DSPs und der PP50 DSP Einstellen der Ausg nge Sie ausschlie lich die neue Betriebssoftware Sollte es zu Fehlern bei der Konfiguration kommen empfehlen wir Laufzeitausgleich zu
9. names may be allocated to the input channels A FrontL Full Not used input is muted e Rear L Fullrange Front L Fullrange e Rear L Tweeter CA Front L Tweeter Rear L Midwoofer l Front L Midrange Rear R Fullrange u Front L Woofer Rear R Tweeter gt Front R Fullrange Rear R Midwoofer e Front R Tweeter e Center Full e Front R Midrange Center Tweeter Eee e Front R Midwoofer e Center Midwoofer er Subwoofer Optical Input L Please note This setting does not affect the functionality It is merely used as an overview Optical Input R and helps you to better differentiate between the channels 13 Naming outputs A FrontL Full Just as with the inputs you are also able to allocate names to the outputs A H Ener on the right hand side of the input mask They are selected using the right or left mouse button C Rear L Full In this case however the selected configuration does immediately affect the default settings of the high pass and low pass filters in the DSP main menu This therefore prevents for example a tweeter connected to output A accidentally being assigned a broad band signal which may damage it Any unused output channels should ideally be muted Not_used Center Tweeter Center Woofer Subwoofer 2 Default settings of individual channel types Output channels Not used Front L Fullrange Front L Tweeter Front L Midrange Front L Woofer Front
10. then please select Front Full L in all four entry fields A FrontLFull m Front L Full Front L Full 4 Front L Full 4 Front L Full A Front L Full INCORRECT A Front L Full a Front L Full Not used Front L Full b If for example a sum signal is generated for the subwoofer from four channels front and rear the following setting is useful Subwoofer x Front L Full Front A Full Rear L Full subwoofer 1 C If for example a front center signal is generated from the two front channels the following setting is useful u E Center Full kim Front L Full Front L Full H Front A Full H Front A Full le Center Full d If you are only using the optical digital inputs for example the following setting would be suitable for a multiple channel configuration with a central loudspeaker and subwoofer Optical L Optical L Optical L Optical L Frant L Full Optical A Optical A Optical A Optical R Front A Full Hot used Optical L Optical L 7 Optical L Optical L Rear L Full Optical A Optical A Optical A Optical A Rear R Full Optical L Optical L z Optical K Optical A Center Full Mot used Optical L Optical L 4 Optical R Optical A Subwoofer 1 Flexible Audio Routing Matrix Not used Not_used Not used G Mot used opal put Optical Input R ms ot_used Motused Mot used Not used Mot_used 16 High and low pass filter settings Bypass Bypass ul YE Frequency Hz
11. 0 125 160 200 250 315 400 500 630 630 1x 1x25 1x6 2k 2x5 3K2 4x 5x 6x3 8k 10k 12x5 16x 20k The following window will appear if the PP50 DSP or P DSP is not connected correctly or the USB drive is not installed correctly CT lt Can t find DSP Interface Start Demomode You can still start the software in demo mode However it is not possible to make any adjustments in demo mode as the device is not connected If you start in demo mode you then have the option of selecting the user interface for the specific device The user interface will open automatically on selection Important information about the PP50 DSP e If you start the software in demo mode it will not recognize any optical and USB interface sub sequently connected It is then necessary to close the program completely and restart it e Once the PP50 DSP has been connected to the PC via the HELIX USB Interface the amplifier will be in PC mode which deactivates various functions such as the under voltage detector or the automatic switching on off using High Level or Remote for example This status remains active until you close the software again correctly using the Close button It is not enough to simply break the connection between the PC and the PP50 DSP If you do this the amplifier remains in DSP mode for up to an hour and does not switch off even if you switch off your car radio Important information on the P DSP e Once the P DSP has been conne
12. Full Front FR Full Front A Full H Front A Full RearLFull RearLFur Rear L Full Rear F Full Rear K Full Rear R Full U Rear Full ki a a Front R Full H Front R Full Front L Full Front L Full Front L Full Front F Full H Rear L Full H Rear R Full x E a amp D X Q D lt x La Se er i Hot used Hot used H Natu seq Mot used net sed Mot used Important information In order to reach the maximum level on each output it is important that each of the output channels always equals the sum of four input signals If you only select one input signal per output the maximum possible output level is reduced by about 12 dB General information about the input output configuration e You do not have to use all the P DSP inputs It is entirely possible to generate all eight output channels from only two input channels e We recommend setting all unused inputs and outputs to Not _ used e Each output channel should always equal the sum of four input signals This means that all fields required for the sum signal must be completed even if they are always filled with the same signal If this is not the case there will be a significant drop in output 15 The following examples are provided as way of clarification a If for example Output A Front L Full is allocated to Input A Front L Full
13. P via the radio or the remote input or via the high level input Starting the software Requirements e The software and the USB driver have been installed correctly e The PP50 DSP or the C DSP P DSP have been connected correctly to the computer e The most recent version of the operating software has been installed on the PP50 DSP and or the C DSP P DSP instructions can be found in the user manual of the respective device In order to start the software please execute the HELIX DSP PC Tool Rev 1 XX exe file The following window will then appear on your screen jp x WHELIX W Read DSF Setting Version 2 03 Rev 1 23 05 2011 Firmware Update Now press the Connect button If the PP50 DSP or the C DSP P DSP has been connected cor rectly the program user interface will appear within 5 15 seconds Setup A Setup i PHELIX GERMAN CAR HIFI Reset Save Store DSP Link Link Link Link Link PPSO 0S5P Channeli Ea Channel 2 ES Channel3 E Channel4 ES Channel5 ES Frequency Hz AH Frequency Hz HA i haracteristic FR haracteristic FR J Characteristic La Characteristic FH FH Slope dB Oct FH Slope dB Oct i Calculate Calculate T T Distance Delay Bypass in 5 i T Mute N i LY MNM oS t DEHHNUEEEEHHUENNEHHNHHNNNNHHNN a 0 50 63 80 100 125 160 200 250 315 400 500 630 800 1x 1K25 1x6 2k 2x5 3x2 4k 5k 6x3 8k 10k 12K5 16x 20k 25 32 40 50 63 80 10
14. PC Tool If communication problems occur between the DSP and the computer please install the most recent version of this file The most recent file can be found under Download under the PC Tool tab on our homepage Detailed instructions on updating the operating software can be found in the P DSP user manual under Updating the operating software Connecting the PP50 DSP to the PC e Connect the red connector of the HELIX Optical amp USB Interface to the red CONTROL IN PUT on the PP50 DSP CONTROL INPUT MicroSD i ET TEL ve fi a Bog Ee Bg By PAE ma s a A a z STATUS CONTROL Please note The interface connector may only be inserted one way up Do not attempt to force the connector into the CONTROL IN PUT the wrong way up lial3 a gt lt 4 OPTICAL amp USB INTERFACE Connector to CONTROL INPUT e Connect the HELIX Optical amp USB Interface USB connector to a free USB port on your PC e Switch on the PP50 DSP via your car radio Connecting the C DSP P DSP to the PC e Connect the P DSP directly to the computer using the supplied USB cable Use the USB port on the P DSP STATUS CONTROL Please note It is not possible to use the HELIX USB Interface with this processor Only use the P DSP USB port to connect to the computer CONTROL CONTROL STATUS MicroSD POWER INPUT e Then insert the USB cable into a free port on the computer e Now switch on the P DS
15. band excess gain than to narrow band frequency dips You can read more about adjusting the equalizer in the chapter entitled Measuring frequency responses i ar bo i Pe al Lr C3 LA CH Ln Co co Ar Zu En a Lm 25 32 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1x 1x25 1x6 2k 25 32 40 50 63 80 100 125 160 200 250 315 400 500 630 630 Ik 1k45 Ik 2K A Sk dk Dk kJ Ok 10K 1265 16k 20K 2 PP50 DSP Parametric filter In addition the graphic 1 3 octave equalizer the PP50 DSP also has one parametric filter for each channel which may be used to make even finer acoustic adjustments This filter is intended exclu sively for compensating excess gain in the frequency response range 0 to 30 dB This prevents any boosts and therefore eliminates any dips in the frequency response A parametric filter is typically used for the narrow band resonance of a door panel for example which cannot be eliminated with the 1 3 octave equalizer The center frequency of the parametric filter may be precisely adjusted using the Hz slide control in 1 6 octave increments and for the subwoofer channel in 1 12 octave increments the corresponding value is displayed above the slide control The following diagram illustrates their function 10dEB Ode 10cdB Z0dB Z0cB 40d6 28 The Q slide control is used to adjust the bandwidth of the frequency cut A low Q factor equates to a broad band reduct
16. cted to the computer and the PC Tool started the P DSP will be in PC mode However it does not remain switched on if the remote input signal or high level signal is switched off Please ensure that these signals remain switched on during the configu ration process Operating controls Main navigation menu setup A setup B Setup D I IX Save Store Ds p wv HE LIX BERMAN CAR HIFI Reset button The Reset button is used to reset all the adjustments made in the software Pressing this button also resynchronizes the connection between the device and the software Important information If you accidentally press the Reset button while adjusting the DSP without having saved your se tup you will loose all your data Save button Use the Save button to save an adjusted setup to a specified location on your PC Clicking on the Save button opens a window which allows you to select the location and give the setup a file name All setups are automatically given the file extension afp The afp files contain all the PC Tool software settings and may only be opened using this software The Save button is also used to save the DSP settings as a micro SD card file To use this func tion the amplifier processor must be connected to the computer and all the specific settings al ready adjusted the settings must be saved using the Store DSP button Then right click on the Save button A window will now open whic
17. cy cut or boost with a narrower band width This function mainly serves to eliminate specific individual problems in the frequency response 29 30 C DSP Graphic equalizer fine adjustment function El Fine Setting The C DSP also has a fine adjustment function for each individual band in the 1 3 octave equali zer Its functionality is identical to that of the P DSP although the setting options are significantly more comprehensive This makes it possible to adjust the central frequencies of each of the bands of the C DSP by increments of 1 24 octaves which allows almost any frequency to be selected as required The Q factor setting also has an extended range of possible values The adjustment ran ge lies between 0 5 and 15 whereby the individual bands may be adjusted more broadly in com parison to the P DSP This function therefore offers almost the same setting options as a purely parametric equalizer Measuring frequency responses To optimally adjust setting of the equalizer using the HELIX DSP PC Tool it is absolutely neces sary to be able to measure the frequency responses of the loudspeakers in your vehicle Even absolute professionals are unable to make perfect adjustments using their hearing alone Thankfully good measuring equipment is now affordable and is definitely worth the investment Measuring equipment The following list of necessary components and software have been tested by us and judged to meet the operat
18. d the Praxis measurement software from Liberty Instruments This is free to download from www libinst com praxis_downloads htm The software offers a considerably greater range of functions than is necessary for measuring fre quency responses To simplify it we have therefore created a configuration file which performs all the necessary software settings so that you can get on with the measurements This configuration file is available on the Audiotec Fischer website under PC Tool Downloads Download the Pra xis Setup ATF ini file and save it preferably in the same directory where you previously installed the Praxis software usually under C Programs Praxis Also download the reference curve which you will use later to help you adjust the equalizer This is also available on the Audiotec Fischer website under PC Tool Downloads Reference frequency response curve Europe px2 This file must be saved in the same directory as the confi guration file Now install the configuration file by starting the Praxis measurement software as follows Config gt Load Config File gt Software specific Liberty Praxis MAIN FORM o Mhk Config View Scripts Heb Exit Praxis Load Config File Software and Hardware Postoracess save As Software specific None 1 Save As Startup Configs Hardware Specific Use StartUp Configs ES Te N Source Prirnar Plo
19. e The table presents an overview of the typical pro perties of the different filter characteristics Butterworth e Regular impulse behavior e Sharp transition from the passband to the stopband e 3 dB gain in the crossover frequency band e The most popular characteristics suitable for almost all applications Bessel e Very good impulse behavior e Very gradual transition from the passband to the stopband e Requires loudspeakers that also have a smooth frequency response outside the functional range e Less than 1 dB gain in the crossover frequency 17 e Only practical in combination with very high quality loudspeaker systems not recommended for subwoofers Linkwitz e Very good impulse behavior e No steep transition from the passband to the stopband e No gain at the crossover frequency e Only useful in combination with very high quality loudspeaker systems not particularly recom mended for subwoofers Chebyshev e Very sharp transition from the passband to the stopband e Poor impulse behavior e Frequency response exhibits waviness 1 dB ripple e Only recommended as a low pass for subwoofer or as a high pass as required for tweeters which are operated near to their resonance frequency Self Define e Only available as a 12 dB filter with adjustable filter values e Useful as a high pass filter in so called filtered bass reflex systems whereby the crossover frequency usually corresponds to the tuning fre
20. e slightly above the set crossover frequency it may be useful to select a steep slope e g 24 dB per octave for the low pass filter e A small 19 mm tweeter operated in a fully active system at up to 3000 Hz also requires a stee per slope 18 dB to 24 dB to avoid overloading the woofer and causing a considerable distor tion factor e In most instances a high pass filter for a woofer or subwoofer is sufficiently dimensioned with 12 dB and is only necessary when small loudspeaker systems are used e A lower slope steepness of just 6 dB in fully active systems is to be used with caution par ticularly with tweeters and are only useful in combination with a suitably selected crossover frequency Important information e If you have selected the Linkwitz filter characteristics you are only able to set the values to 12 dB and 24 dB e The Self Define characteristics always has a slope of 12 dB per octave Q factor Q Factor This slide control is only active if you select the Self Define characteristics The slope for this characteristics setting is fixed at 12 dB and there is the option of adjusting the Q factor of the high or low pass between 0 5 and 2 0 in increments of 0 1 The Q factor effect is illustrated below using the example of a high and low pass filter with a crossover frequency of 1000 Hz Fig 5 Q factor effect for the high pass 10dB Ode 10dB zZ0dB Z0dE
21. easy to spot as the transparent ring on the preamplifier changes color from blue to red this requires that it is already connected to the PC Suitable measurement signals So called pink noise is used as a measurement test signal and must be reproduced by the car radio This is the only means of ensuring that the equalization in many factory installed radios in this instance the sound control which is not accessible to the user is taken into consideration during the reading If you don t have the CD with a pink noise test signal you can download it from the Audiotec Fischer website under Downloads Tools If you want to burn the track onto a CD please use the Rosa Rauschen cda file Rosa Rau schen is the German term for pink noise If your car radio can also play music directly from a USB stick select either the uncompressed WAV format Rosa Rauschen wav or the MP3 format 31 Rosa Rauschen mp3 and copy them to the USB memory We recommend creating a CD of the test signal if possible Appropriate car radio settings for taking readings To take readings it is important that your car radio is set up correctly All sound controls should be set to either linear or the central position Deactivate any existing loudness functions The balan ce and fade controllers must also be adjusted to the central position Measurement software For measuring the frequency responses we recommen
22. erst das aktuellste Factory Setup in den P DSP 50 DSP zu laden Eine Anleitung dazu finden Sie in der Toomis Bedienungsanleitung im Kapitel Installation von fahrzeugspezifischen Setups zqyuanzug Download Hinweis Die i ummer des PC Tools sol ine Stelle vor und nach dern Minus die gleichen Nummern aufweisen wie die der Iche immer in der aktue nin den P DSP die PP50 DSP gespielt werden sollte Bei Anderungen Nummer hinter dem Mir e afl Datei nicht geupdated werden HELIX PC Tool PC Tool Rev 1 45 zip PP50 DSP Factory Setups PP50 DSP ex factory MP3 mode PP7E Rev 1 40 af2 PP50 DSP PC Tool setup Rev 1 40 afl P DSP Factory Setups Firmware Update P DSP Rev 1 45 hex P DSP Rev 1 40 afl P DSP Rev 1 40 af2 AUDIOTEC FISCHER H negr ben 26 57392 Schmallenberg Deutschland Telefon 49 0 2972 97 O B00KMARK a a Impressum H ndlerlogin e This zip file contains a folder called HELIX DSP PC Tool e Unpack the entire folder and save it on your hard drivelmportant This folder must not be sa ved to any portable data storage media e g USB stick but stored on the hard drive e If the folder has been successfully unpacked and saved you will find it contains the following files among others alltrans bxt borlndnm alll 8 cp3245rt dll Fed2x dll 2 HELI DSF PC Tool Rev 1 42 exe Ej Mo File afp E P DSP 1 40 hex E PPSODSP Rev 1 40 hex in USE driver exe e Now double click on the USB dri
23. ge from the channel routing user interface 11 Channel selection Lirik Link Link Link Link Channel 1 ZZ Channel2 EZ Channel3 2 Channel4 ZZ Channel5 Selecting channels for adjustment Select the channel you want to adjust To do so simply click on the respective box with the left mouse button The active channel is indicated by the red LED top front left in the example The software allows each channel to be adjusted separately In spite of this it often makes sense Linking channels Link Link Link Link Link Channel 1 Channel 2 Channel 3 Channel 4 to link the two front channels or the two rear channels for example and therefore adjust them simultaneously This is particularly recommended for the high and low pass filters since having different values for the right and left channels should be avoided Even with the equalizer a sepa rate adjustment of channels only makes sense if sound optimization is only required for a single listening position Simply insert a tick by the channels you want to adjust simultaneously in the example above the two front channels Important information When linking two channels the adjustments made previously to one channel are not automatically transferred to the other channel Only those adjustments made after the link has been created are then applied in an identical manner to the linked channels Therefore please consider whether two or more channels should be adjusted simul
24. gnment overview page Overview So that you don t have to constantly switch backwards and forwards between the individual chan nels when adjusting the time alignment and phase you can use the Overview button to display all the channel values simultaneously This presents you with the following display o lx Back to DSP Menu gt hase amp Time Alignment Overview PHELIX GERMAN CAR HIFI Channel 1 fa E Calculate Calculate Delay Channel 3 Calculate Calculate Delay Channel 5 Calculate Calculate Delay Channel 7 mm a LS Calculate Calculate Distance Delay Channel 2 ol H a Calculate Calculate Delay Channel 4 i Calculate Calculate Delay Channel 6 f La re Ls Calculate Calculate Distance Delay Channel 8 Ba r ee Calculate Calculate Delay Use the Back to DSP Menu button located in the top left hand corner to return to the previous display Adjusting the phase The phase position of each of the front and rear channels can be switched between 0 and 180 degrees Regulation of the subwoofer channel phase is particularly sensitive and may be adjusted between 0 and 360 degrees in increments of 22 5 degrees This makes it possible to acoustically adjust the subwoofer precisely to the front and rear channels 24 Adjusting the time alignment Time Alignment It is only possible to achieve a clean natural resp
25. h allows you to select the location On confirmation the program generates a micro SD card file with the file extension ac1 This process can take up to a minute This file can then be simply installed via the micro SD card slot on any of the devices of the same type without the need for the device to be connected to the computer Please note It is then no longer possible to open and therefore amend the ac1 file We therefore strongly recommend saving the settings as afp files Important information Saving the settings as an afp file does not save them in the actual amplifier Please use the Store DSP button for this It is not possible to install the afp files directly in the amplifier processor via the micro SD card slot the PC Tool must be used instead Store DSP button The Store DSP button is used to permanently transfer the settings you made in the PC software to the amplifier s processor s internal memory The amplifier then accesses this setup in its memory each time it is switched on The afp file is also always saved in the amplifier processor and loaded from the device when the software opens Nevertheless we still recommend that you also always manually save the afp file on your computer Please note The PP50 DSP memory is only able to manage a single setup generated using this software The C DSP P DSP memory is able to manage two different setups These can be selected via the software Selecting t
26. he setups A D Setup A The PC Tool software allows the direct comparison of a maximum of four different setups using the Setup A to Setup D buttons First load a previously adjusted setup into the selected memory by clicking with the right hand mouse button on the respective box under Setup A D This opens a window in which you can retrieve the corresponding afp file from a chosen location A setup is automatically active and audible as soon as it is loaded Important information The volume is temporarily reduced when switching between the various setups in order to avoid any potential temporary static noise when modifying the parameters Channel routing the Configure Inputs Outputs button UHR Inputs Outputs This button is used to switch to the channel routing overview in which you can configure any of the inputs and outputs This allows you to assign names to each of the individual channels to add up input signals and allocate a specific input signal to each output To protect the connected louds peaker you are also able to load suitable automatic default settings for each of your settings for each channel which may of course be amended as required Please note The channel routing overview may only be found in the PC Tool user interface of our standalone processors The PP50 DSP does not have this function Configure DSP button euras This button is used to return to the main PC Tool pa
27. ie USB Audioger t hie Lautsprecher USB SERIES A gt Mikrofon USB Audiogerat Ea Mixer and 1 0 Matching f Digital 10 Matching i tapas Use Digital Gut Tom Upk Use Digital In g dB 33 Frequency response readings 34 Ensure that you have correctly adjusted the time alignment using the HELIX DSP PC Tool be fore you start the measurement Sit in the driver s seat with the measuring microphone It is best to place your PC Notebook Netbook on the passenger seat so that you can use it easily Ensure that the screen is not positioned directly in front of the loudspeaker on the pas senger side as this can distort the readings Start the pink noise reproduction on your car radio Set the volume to fully cover any ambient noise Ideally the vehicle will be in an enclosed garage while you are taking the measurements so that traffic noise does not affect the readings for example Begin by measuring the front loudspeaker system i e initially mute the rear loudspeaker and any connected subwoofer e g using the HELIX DSP PC Tool Mute function Hold the measuring microphone upright and gradually turn it to a horizontal position in a semi circle between your left and right ears To start taking readings on your PC press the F12 function key Praxis will now start measu ring for approximately 18 seconds You can then identify the determined frequency response together with the red reference curve on your PC
28. ing readings Frequency response readings ccccccecceeccecceeceeeceeceecceeceecaecaueceesueseesseesaeeses 34 Important information about the PP50 DSP a enonnennnnennnnennensnnnnsnrnrerrnrsrrnnnn 36 System requirements PC system requirements e Atleast 1 GHz processor e Atleast 1 GB RAM main memory e Atleast 25 MB free hard disk space e 1 free USB port for connecting the HELIX Optical amp USB Interface e Screen resolution of at least 1024 x 768 pixels or greater The software has been tested on the following operating systems Windows XP Windows Vista 32 bit and Windows 7 PP50 DSP system requirements e You require the HELIX Optical amp USB Interface Part No H424493 e The relevant SETUP FILE must be installed in the PP50 DSPFile name PP50 DSP PC Tool Software Rev X X af1 Detailed instructions are provided in the PP50 DSP user manual P DSP system requirements e You require the supplied USB cable e The most recent version of the SETUP FILE must be installed in the P DSPFile name P DSP PC Tool Software Rev X X af1Detailed instructions are provided in the P DSP user manual Recommended equipment for correct in vehicle sound measurement A device is required to measure frequency responses in order to optimize the PP50 DSP to your vehicle There are now very reasonably priced systems which operate on a PC Notebook Netbook and make it affordable for everyone to achieve reliable readings The following
29. ion while a high Q value equates to a particularly narrow band cuts The effect of the Q control is illustrated in the following diagram 10dB I IM Q Ode est acs aoc pre ete er et he Rin sh j or 0DdgB eS Roper rec mere cree ehe her ei fe Maut ER eRe bate at sens ect ir SEI LA 0 5 p i a 4 JR 1 a PUA nn T Eid Cee Reais ME Be DR et cy Pi id Me ea bee hte i eee Teint ES EL AAE Mare Ba A A LH PE ear DAA TEEN EHE fet hac AATRE EE ATA CANETA OTAN VET PEP e ee sl YN PTAA ees ene Catone TRAA eatin DAN SA Wt Ea leeren 40dB 20 SO 100 200 c00 ik P DSP Graphic equalizer fine adjustment function EQ Fine Setting The FineEQ function is used to precisely adjust the 1 3 octave equalizer and provides a similar function to the parametric filter of the PP50 DSP The FineEQ function makes it possible to adjust each of the 30 bands of each channel even more accurately Therefore both the center frequency and the Q factor of each band may be adjusted with great precision To finely adjust the selected band click with the mouse on the level control of the specific band This should turn red On the right hand side in the EQ Fine Setting area you can now adjust the center frequency of the band up and down This adjustment is made in 1 12 octave increments The quality Q factor of each band may also be adjusted The default value for each band is 4 3 In this respect the P DSP provides the option of adjusting a frequen
30. ional requirements e Behringer ECM8000 measuring microphone e T BONE Micplug USB microphone USB interface with phantom power e Praxis measurement software from Liberty Instruments free to download from www libinst com praxis_downloads htm e A music CD containing a pink noise test signal Measuring microphone The Behringer ECM8000 is a very robust and linear measuring microphone with omnidirectional characteristics In comparison to considerably more expensive microphones it also provides per fectly sufficient results for this application The supplied wind deflector should not be used when taking measurements It always requires a preamplifier which supplies the microphone with the necessary voltage phantom power There is therefore no need for a direct connection to a PC sound card Suitable preamplifiers A microphone preamplifier with phantom power is required for the measuring microphone to function with the PC This function can be performed by the T Bone MICPLUG USB for examp le It is simply attached to the measuring microphone and connected directly to the PC using the unfortunately very short USB cable supplied There is no need for a specific driver If the USB connecting cable is too short we recommend using an additional XLR microphone cable to con nect the microphone and the preamplifier When using the MICPLUG USB ensure that the phan tom power has been activated using the small button on the underside This is
31. ists of only a voice and no accompanying instru ments In small increments adjust the time alignment of one of the front loudspeakers until you can hear the voice either directly from the front or slightly from the right 1 o clock position It is usually only necessary to regulate the time alignment by only a few centimeters to reach the desired result Now mute the front channels using the Mute function and reactivate the rear channels Listen to the same piece of music again and adjust the time alignment of the rear channels so that the voice can be heard from directly behind you or slightly from the right 5 o clock positi on Reactivate the front channels keeping the subwoofer channel muted as before PP50 DSP The PP50 DSP also has the option of using the Additional Delta Delay Front Rear slide control to shift the rear channels backwards until it is almost impossible to hear them or they no longer have any negative effect on the natural response of the front loudspeaker It is not usually necessary to adjust the time alignment of the subwoofer following the tape measure method Setting the phase control is particularly effective in this respect This completes the adjustment of the time alignment 25 26 Important information The time alignment function may only be used to achieve optimum stereo reproduction for one listening position in the vehicle However spatial reproduction in the other positions is u
32. n the bass range using the settings given above you can use the equalizer for further adjustments in the subwoofer channel AUDIOTEC FISCHER Audiotec Fischer GmbH Gewerbegebiet Lake Il Hunegraben 26 57392 Schmallenberg Germany Tel 49 0 2972 9788 0 Fax 49 0 2972 9788 88 E mail helix audiotec fischer com Internet www audiotec fischer com 3
33. nne nenne are ae ne Rare ehe 17 Butterworth Bessel Linkwitz Chebyshev Self define SODO e E E E E E A E E E 19 OE COT eE EE OEE AE E EET 21 High pass and low pass filter bypass FUNCTION ccceccecceeeeeeeeeeeeeseeeeeeneeees 22 Adjusting the output levels 022020020020020020 nn nnn nen nnnnn nennen 23 Adjusting the phasing and time alignment 2 022022022000o 24 Adjusting the phase 24024022002n0nnnnenennnnnnnenennennnnenennnnnnnnennn nenn ene nenne nme 24 Adjusting the time alignment z02202400200 00 000000 nenn ann anno nnn ann anne ann nnnnnnnen 25 Adjusting the equalizer 020020020020020nnnnnnnnennnnnnnnnnnnnnn nennen 27 Graphic 1 3 octave equalizer 2u0220ssensensennennennnnnnnnnnnnnnn nennen nnenne nennen 27 PP30 DSP Parametric TCM seen ee ae ne ee ea 28 P DSP Graphic equalizer fine adjustment function 022202200220 2220 29 C DSP Graphic equalizer fine adjustment function 02200200220 220er 30 Measuring frequency responses 2 022022022002000n0nnnnnnnnnnnennn nennen 31 Measuring equipment waxes scree ee ea ne 31 Measuring microphone Suitable preamplifiers Suitable measurement signals Measurement Software u2ss02sussnsnsennnnennnunnnnnnennennnnnennnnnnsnnennnnnnennennnnnne nenn 32 Appropriate car radio settings for tak
34. onse of the music if the time alignment is adjus ted correctly The program therefore allows sensitive adjustments in increments of 7 mm The software provides two different ways of adjusting the time alignment Calculate Distance This mode requires the input of the distance between the loudspeaker Distance the ear of the listener The program uses this to calculate the necessa ry time delay for each channel Calculate Delay This mode requires the direct input of the preferred time delay value if available The optimum setting is most easily calculated using the Calculate Distance mode as follows Use a tape measure to measure in centimeters the distance between the front left loudspeaker and your head in your sitting listening position Adjust this value using the slide control Repeat these steps for each of the other channels The program uses these distances to calculate the required time delay for each of the channels and displays these values accordingly in msec This prevents a delay on the loudspeaker furthest from the listening position usually the subwoofer channel whereas the loudspeaker closest to the listener usually experiences a delay It is not necessary to measure adjust the values as accurately as possible as they merely serve as initial values for the fine adjustment Now mute the rear channels and the subwoofer using the Mute function Select a piece of music which preferably cons
35. quency of the bass reflex tunnel Examples of the different filter characteristics are presented for a 1000 Hz high and low pass filter with a slope of 24 dB Fig 1 Filter characteristics of the high pass 100B Ode 10dB Z0dE Z0dE 40d6 Fig 2 Low pass filter characteristics 10c0B Ode 10d6 20d6 Jod 40d6 Slope Use this slide control to adjust the slope of the filter in 6 dB increments from O dB per octave filter not active to a maximum of 42 dB per octave on the C DSP and a maximum of 30 dB per octave on the P DSP filter with very steep slope The effect of the slope on the frequency cha racteristics of a filter is illustrated below using the example of a 1000 Hz high and low pass with Butterworth characteristic Fig 3 Effect of slope on the high pass 10dB OdB 100B z0cdB 19 Fig 4 Effect of slope on the low pass 10d6 Ode 10cdB zZ0dB JOAD 40d6 The value you select for the slope depends heavily on the type of application The following points may aid your decision e The steeper the slope the worse the filter impulse behavior e The preferred level for the subwoofer channel low pass filter is 24 dB e Standard values for the crossover between the woofer and the tweeter in fully active systems lie around 12 dB e If the woofer exhibits considerable lack of clarity in the frequency respons
36. quency responses should on the other hand be completely eliminated as the ear is very sensitive to this If the graphic equalizer is insufficient for this function please use the additional parametric filter PP50 DSP or the fine adjustment function C DSP P DSP e Once you have corrected the front channels mute them and activate the rear channels keep the subwoofer muted as before e Now perform the measurement process as described in the same way for the rear loudspea kers There are different approaches however e You also measure the rear loudspeakers from the driver s seat This method is only recommen ded if the vehicle has just two seats or if you usually only travel alone The rear loudspeakers usually sound very unpleasant in the rear seats if they have been optimized for the driver s seat e Alternatively in vehicles with four or more seats sit in the middle in the rear to take the rea dings for the rear loudspeakers and adjust the settings to achieve a pleasant sound in the rear seats Audiotec Fischer use this procedure to create the vehicle specific setups for the PP50 DSP e Now reactivate all the loudspeakers including the subwoofer and take another frequency res ponse reading The next step is to optimally adjust the subwoofer to the front rear loudspea kers The equalizer should only be used as the last means of adjustment Following this adjustment the PP50 DSP should have the optimum setup for your loudspeaker
37. sually worse with time alignment Always switch on the time alignment before you adjust the frequency response with the equali zer Adjusting the equalizer Graphic 1 3 octave equalizer Each of the DSP channels has its own equalizer which affects the frequency response in high resolution 1 3 octave increments The front and rear channels therefore have 30 slide controls for the bands between 25 Hz and 20 kHz The subwoofer channel has 10 bands from 25 Hz to 200 Hz The curve displayed above the slide control indicates the function of the equalizer The frequency bands have been subdivided into 1 3 octave internals because this is particularly suited to human hearing and makes it easy to adjust the equalizer if the frequency response is also measured in the same 1 3 octave resolution please also refer to the chapter Measuring fre quency responses Each band of the equalizer allows a maximum boost of 6 dB and a maximum cut of 18 dB This asymmetrical design was chosen because boost levels of more than 6 dB are rarely required Any stronger narrow band frequency dips measured in the frequency response are usually due to signal cancellations caused by the phase shifts which may not be eliminated by the equalizer even with greater boost levels Expe rience shows that attention should be paid to the elimination of excess gain in the frequency res ponse when adjusting it Hearing is considerably more sensitive to narrow
38. t T to gt F y Default Data Directory to gt F eg E Target Hardware Spenfie nd Demo Scripts arget lt create new plob Preferences 48 Lautsprecher Realiek High Def ADIDAS Mikrofon Reatiek High Deini Name m AudPodMixer 28 12 2010 20 40 Dateiordner d CalCheck 27 12 2010 20 35 Dateiordner di Demoscripts 27 12 2010 20 36 Dateiordner 2 d MicMixer 28 12 2010 20 40 Dateiordner E di ProbeMixer 28 12 2010 20 40 Dateiordner p VCLscripts 27 12 2010 20 35 Dateiordner Praxis ini 14 01 2011 12 44 Konfigurationsei Dateiname Praxis ini Dateityp Int ini Abbrechen z This opens a window in which you can select the directory where you previously saved the Praxis Setup ATF ini configuration file Click with the mouse on Open to automatically load the configuration file and LOAD CONFIG will be temporarily displayed T Liberty Praxis MAIN FORM Stimulus Acquisitio Fostproces Fi Configur Apply E Configure E Source e Primary Pot zl LOAD CONFIG Now you need to adjust the microphone you are going to use to take the measurements Setup gt D A amp A D gt Dev This naturally requires that you have already connected your measuring microphone to a USB port on your PC via the preamplifier Praxis is now ready for the frequency response reading Format Fie Print Clone Hold Cl armult OT i ss Dey skan
39. taneously before making any adjustments Channel routing configuring inputs and outputs The C DSP P DSP allows input channels to be freely allocated to the output channels To perform this allocation click on the Configure Inputs Outputs box in the DSP PC Tool main menu once the software starts This will then present you with the following input mask Setup A Setup B Setup C Setup D oy x Reset Save Store DSP PHELIX GERMAN CAR HIFI Configure DSP Link PC Link Device Ka Device Type Device S N A FrontL Full n Front L Full Not_used H Not_used 4 Not_used lA FrontL Full Front R Full Not_used Not_used M Not_used IB Frente Fut lB piner E a D Rear Full _ _ le Center Full L Rear L Full Not_used H Not_ used Not_used C Rearlrull RearR Full Not_used 4 Not_used f Not_used D Rear R Full 1 Center Full Not_used 1 Not_used Not_used E Center Tweeter IF Subwoofer Subwoofer Not_used H Not_used LH Not_used F Center Woofer Flexible Audio Routing Matrix Optical Input L Optical L Not_used H Not_used H Not_used G Subwoofer1 Optical Input R Optical R Not used Not_used 1 Not_used H subwoofer Naming inputs On the left hand side of this mask you can allocate a name to each of the input channels C DSP A H and P DSP A F to give you the best possible overview Make the transfer using the right and left mouse buttons The following
40. ver exe file to install the USB communication driver This driver must be installed before you start the HELIX DSP PC Tool Rev X xx exe program The following window will appear on your PC when you install the USB driver BA C Users Dant AppData Local Temp DPinst_Monx86 exe 32 hit 05 detected Ci UsersDanis AappData Local Temp DPInstx66 exe WiInstalling driver Important information If this window does not open please execute the USB driver exe file again Installing the driver itself can take up to 1 minute depending on the PC e Once the driver has been installed your PC is ready to use the software e You may now connect the processor and or USB interface to a free USB port on your PC Information on the PP50 DSP The PP50 DSP is supplied as standard with operating software af1 file for adjusting the DSP via the PC Tool This file is located in the amplifier s first memory bank af1 If communication prob lems occur between the PP50 DSP and the interface PC Tool please install the most recent ver sion of this file The file can be found under Download under the PC Tool tab on our homepage Download the latest version of this file and install the file via a micro SD card Detailed instructions can be found under Installing vehicle specific setups in the PP50 DSP user manual Information on the P DSP The P DSP is supplied as standard with operating software for configuring the DSP via the
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