FOURAUDIO HD2 Manual Download Page 8 | Manualshive

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FOURAUDIO HD2 Manual Download Page 8

3 Basic Usage

The HD2 needs to be connected to its audio sources and sinks, of course. It works with different
programs for its DSPs according to the loudspeaker configuration (number of ways, mode of
equalization, downsampling rates, etc.) and with different FIR filters (if FIR equalization is selected).
The setups and filters can be uploaded from the PC or downloaded to the PC and stored on disk. The
DSP programs are uploaded automatically. The user can just forget about them.

A total number of up to 30 setups can be uploaded simultaneously. The maximum number of FIR filters
is limited to 50 by the program structure but may be lower in reality due to the internal memory size.

The setups contain the total state of the HD2, that is, the routing setup, selected programs and filters,
EQ settings etc. Also the FIR filters are stored in the setup. You can download the setup to the hard disk
and transfer it to another HD2. Since all necessary information is inside the setup, the user just has to
recall the setup in the second HD2 which will behave just like the source HD2.

3.1 Network Setup

To configure the HD2 externally via a remote PC, it contains a network chip with an own MAC address
which is unique for the HD2. Thus, the HD2 has to be integrated in a network via its Ethernet connector
which can happen in two different ways:

1. If the network is managed by a DHCP server, the HD2 will automatically obtain an own IP.

2. If only static IP addresses without any DHCP server are used, you have to establish a

connection between the remote PC and the HD2 either directly via an Ethernet patch cable or
by using a switch. Connect the HD2s and the PC to the switch. The HD2s then must have
different IP addresses which share the subnet with the PC's IP address.

The HD2 communicates with the remote PC via an own TCP/IP protocol. This requires the appropriate
network setup on the PC.

In case that a DHCP server is used in the network and the PC is already connected to the network, no
further actions are required.

If direct communication between PC and HD2 is desired, the both PC and HD2 have to be in the same
subnet. The default IP address of the HD2 is 192.168.1.15. Thus, open the network configuration on
your PC and modify the properties of the TCP/IP protocol such that the PC has an IP address in the
same subnet, e.g. 192.168.1.1.

If you are using more than one HD2s at a time, you have to assign different IP addresses. This is

8

Fig. 2: TCP/IP configuration

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Summary of Contents for HD2

Page 1: ...Manual for HD2 and HD2Control Version 1075 4 2 11 12 2009 ...

Page 2: ...3 Establishing a connection to the HD2 10 4 4 Basic Concept of Operation 12 4 4 1 Status Bar 12 4 5 System Tab simple mode 13 4 5 1 Selecting Recalling a Setup 13 4 5 2 Select Different Input 13 4 6 Advanced Tab 13 4 6 1 FIR Filters 13 4 6 2 Setups 14 4 6 3 Configuration Wizard 15 4 6 4 Firmware Update 18 4 6 5 Erase Flash Mem Reset to Factory Defaults 19 4 6 6 Download Upload the Complete Configu...

Page 3: ... stacked dual range Function single range A ADC 0 stacked ADC 0 left B ADC 0 right C ADC 1 stacked ADC 1 left D ADC 1 right Early versions Early versions have 4 input XLR jacks labelled 1 3 2 4 5 and 6 In the housing near the input jacks switches are provided to select between inputs 1 and 3 between inputs 2 and 4 In case a 3rd AD converter is provided its inputs are statically connected to inputs...

Page 4: ...nputs and Outputs As digital in and outputs a balanced AES EBU in output as well as an optical in output are provided These can be selected in the routing options of the remote software Only one 2 channel input at a time can be used that is either opto or XLR The 2 channel output is always available at the opto and XLR jacks 4 ...

Page 5: ...ser enters the mode to set gain or delay for one of the input or output channels The LED display then shows the gain delay for the channel with SEL flashing The button below each channel then operates as a select button instead of a mute button The input display section consists of 4 level meters and several status LEDs CLP input signal clips DRC if lit input operates in dual range stacked mode AN...

Page 6: ...ral behaviour with 0 dB gain the master gain has to be set to 10 5 dB Note From Firmware 1073 upwards the master gain behaviour has changed The range depends on the selected configuration For analog inputs master gain ranges from 108 0 to 19 5 dB A gain of 0 dB then provides neutral behaviour Master Delay Function Overall delay applied to every input Position After the PEQ Bank in the input path R...

Page 7: ...erall delay applied to every input Position After the PEQ Bank in the input path Range Minimum 0 Maximum depends on the delay used in the FIR filter and the outputs Comments The delay uses a variant memory pool inside the DSP That is if e g a high master delay is used the maximum channel delay decreases and vice versa In this menu the input to be adjusted is shown on the display and indicated by a...

Page 8: ...emote PC it contains a network chip with an own MAC address which is unique for the HD2 Thus the HD2 has to be integrated in a network via its Ethernet connector which can happen in two different ways 1 If the network is managed by a DHCP server the HD2 will automatically obtain an own IP 2 If only static IP addresses without any DHCP server are used you have to establish a connection between the ...

Page 9: ...as an IP address of 192 168 1 15 Try to access the HD2 by opening a console typing ping 192 168 1 15 and see if it reacts The console can be found under Start Programs Accessories If you get no response Did you use the right cable crossover cable if directly connected to PC standard patch cable if connected to router switch hub Firewall active configure it to not block port 5000 Windows network se...

Page 10: ...file contents into a directory of your own choice The directory which HD2Control exe resides in must have write access for the current user A HD2_Config directory will be created to store temporary data 4 2 Starting the Software The software is started by executing HD2Control exe You ll see the following GUI 4 3 Establishing a connection to the HD2 To identify the HD2 in the network its IP address...

Page 11: ...vices are listed in the drop down list The entries consist of the serial number of the HD2 followed by its IP address in the network In case the desired device has not been found you can retrigger a network scan by clicking Network scan Now select the desired device to connect to and click Select HD2 The dialog will close the selected IP address will be transferred in the IP edit field in the main...

Page 12: ...n reduction and coil temperature meters Channel mute and phase inversion Limiter Limiter configuration In Output Tabs EQs Peak Shelving Low Highpass for in and output channels Filter Butterworth Linkwitz Riley etc filters with slopes up to 60dB oct Frequency phase response plot of in output 4 4 1 Status Bar Since software version 1075 4 1 a status bar appears at the bottom of the window At the bot...

Page 13: ... shut off the HD2 and start again it will come up with the gain value it had before shutting off 4 5 2 Select Different Input Based on the currently selected routing different inputs can be selected In most cases three input options are available namely Analog DRC Digital SRC and Digital AES There are however routing presets which do not allow all of these e g routings which use 4 analog inputs Wi...

Page 14: ...to PC button in the FIR filter group box opens a small filter selection dialog After the desired filter has been selected a directory selection dialog comes up The selected filter is then stored as a file with the extension fir in the selected directory The file name is automatically derived from the display name 4 6 2 Setups A setup contains the complete state information of the HD2 All settings ...

Page 15: ... directly or click Browse to search for it in a file selection dialog Select a position to upload to Selecting a non empty list entry will overwrite the setup at that position After successful uploading the setup list in the system tab is refreshed 4 6 3 Configuration Wizard In the Advanced tab you find a button labelled Configuration Wizard After clicking the button you can select the type of cro...

Page 16: ... e g removes all routings which do not use the analog inputs Selecting the check box Dual range ADC DRC further removes all entries which do not use DRC Additionally a filter can be set on the output routing in the X Over drop down box E g selecting 1 4 shows only routings which support 1 4 crossovers Note when FIR filters are selected routing presets that do not fit to the filter settings are not...

Page 17: ...s a 2 or 3 way speaker limiters filters can be set as for a 2 or 3 way system The signals at the outputs are then added up and fed to a full range speaker Note FIR filters provide values for clock and multipath If you selected FIR filters in the X Over dialog the controls automatically show these values and are disabled When you click next the last page appears not shown here and with the Finish b...

Page 18: ... Note the current software HD2Control requires at least firmware version 1071 to operate You can connect to HD2s with older firmware versions and do firmware updates but should not expect that the software fully works with that version Upgrading the firmware of the HD2 to a newer version can be done via ethernet You should have a valid firmware file named hd2_v fwu were denotes the 4 digit main ve...

Page 19: ...y for valid files and upload them The HD2 does not have to be empty for this operation FIR filters different from the ones that are already present in the HD2 are appended If an FIR filter already exists in the HD2 it will not be uploaded Setups behave differently since they are fixed to a certain position If a setup file is named Set5_ setupname hd2 and a setup already exists in the HD2 at positi...

Page 20: ... reduction induced by both limiters That is if the level exceeds the peak limiter threshold by 4 dB a gain reduction of 4 dB is shown If the RMS or thermo limiter is active the gain reduction of both limiters are added and shown here Speaker temperature is shown in the bar left to the gain reduction meters blue bar gets red on top This is the percentage of the allowed maximum temperature as modell...

Page 21: ...or unmuted output Input mute buttons en disable the corresponding input causing the connected ouput to be silent The input mute button turns red when muted The mute buttons of the connected ouputs turn light red and are disabled to indicate that no input signal arrives Master mute disables all inputs Thus all other mute buttons are disabled and coloured light red 21 Fig 14 Example Outputs AnalogOu...

Page 22: ...have the following meaning Gain Gain of the amplifier in dB Contin Output Continuous output power of the amplifier in Watts or different unit determined by the switch at the bottom right Surge When the capacitors of the amps are full more than the continuous output power can be drawn for a short time This is the value above the cont power that can be drawn Surge Duration See above Specifies the ti...

Page 23: ...ge AD converters etc different numbers of in and output paths can occur The above picture shows the processing when using FIR filters as crossover filters In case of IIR equalization and crossover filters the blocks DS X over EQ and US that is downsamplers crossover FIR filters and upsamplers are non functional Instead the IIR filters crossovers as well as EQ are set in the PEQ bank elements You c...

Page 24: ...open a control The filter has to be activated by clicking on the Active checkbox Remove an EQ Filter To remove an EQ Filter select it by clicking one of the controls in the corresponding row and click Remove afterwards Remove all EQs Filters To remove all EQs Filters in the input output click on the Remove All button in the corresponding group Copying Eqs Filters between Channels To duplicate Eqs ...

Page 25: ...25 Fig 19 Select and copy paste filters using the context menu right mouse button ...

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