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Table of Contents
Summary of Contents for FOURAUDIO HD2
- Page 1 Manual for HD2 and HD2Control Version 1075.4.2 11.12.2009...
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Page 2: Table Of Contents
3.1.2 Setting A Specified IP Address..................9 3.1.3 Network troubleshooting....................9 4 The remote software HD2Control....................10 4.1 Installation...........................10 4.2 Starting the Software......................10 4.3 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... -
Page 3: Hd2 In- And Outputs
AD converter are combined to form a dual range converter with a higher dynamic range. The first versions of HD2 usually are set to stacked mode. In later versions, the AD converter operation mode can be set by software. -
Page 4: Digital Inputs And Outputs
Output jack Function Sub left Low left Mid left High left Sub right Low right Mid left High righ 1.3 Digital Inputs 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. -
Page 5: Front Panel
The front panel operations are not yet fully completed. Thus, the buttons MENU and PARAM are non- functional. With STORE and RECALL, menus can be entered which allow to store and recall setups from a list. The PAGE keys navigate through the adjustable settings. After starting up, the HD2 is in the →... - Page 6 Comments: The default maximum voltage for the AD converters is 28.5 dBu (26.6 Vpp) while the DAC output voltage range is 18 dBu (7.94 Vpp). Thus, there is a “loss” of 10.5 dB inside the HD2. To obtain a neutral behaviour with 0 dB gain, the master gain has to be set to 10.5 dB.
- Page 7 Pushing the knob in this menu resets the IP to the default value 192.168.1.15. After restarting the HD2, it uses this IP. Comments: If the HD2 is connected to a DHCP router, this setting has no effect, since the IP assigned by the router is used.
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Page 8: Basic Usage
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. -
Page 9: Resetting To The Default Ip Address (192.168.1.15)
3.1.1 Resetting To The Default IP Address (192.168.1.15) Power on the HD2 and wait until the HD2 has finished booting. Then, use the Page keys on the front panel and enter the Menu 'Reset IP'. Push the knob. You get a message 'IP reset to 192.168.1.15). -
Page 10: The Remote Software Hd2Control
4.3 Establishing a connection to the HD2 To identify the HD2 in the network, its IP address has to be known. In case of a direct connection, the default address should be 192.168.1.15 which is the default value in the IP address GUI element in the... - Page 11 If several HD2 devices are connected to the network at the same time, the one used in the last session is entered into the IP Address field. To change this, the user has to select the HD2 to connect to. Click...
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Page 12: Basic Concept Of Operation
Fig. 5: HD2Control GUI after connection 4.4 Basic Concept of Operation The software GUI is organized in several tabs. Each of these tabs is explained in detail below. A short overview follows here: Functions System IP settings Routing Setup and filter management Storing and restoring the configuration to the hard disk. -
Page 13: System Tab (Simple Mode)
Note: the master gain stored in the setup will not be restored by recalling it. That is, if your master gain is at -10 dB when recalling the setup, it will not be changed afterwards. If you shut off the HD2 and start again, it will come up with the gain value it had before shutting off. -
Page 14: Setups
<filtername>.blk and <filtername>.fcs. The .fcs file contains information about the filter to be displayed in the GUI. As soon as a filter is uploaded to the HD2, it is newly formatted to reside in only 1 file with the suffix .fir. You can either upload the .blk file (if the corresponding .fcs file exists in the same directory) or upload a .fir file. -
Page 15: Configuration Wizard
Downloading a Setup A setup can be downloaded to hard disk for archiving or uploading it to another HD2. Clicking on the Download to PC button opens a dialog with a drop-down list which allows to select the setup to be downloaded. - Page 16 2 selected filters have to be the same. If the settings are correct, the Next button is highlighted. After finishing the wizard, the 2 files will be uploaded to the HD2. After the crossovers have been selected, the Routing page comes up: Fig. 9: Routing page in the Config Wizard A routing can be selected from the drop-down box.
- Page 17 Fig. 10: Multipath and clock options in the config wizard In the left drop-down box, the internal clock, the HD2 operates on, can be selected. If you chose to use FIR filters in the first dialog. The multipath options allow to combine several output paths internally and feed, e.g. a speaker with a passive crossover inside.
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Page 18: Firmware Update
When using FIR filters, normally, the 4 outputs of one DSP are configured to feed sub, low, mid and high paths of a speaker. The HD2 allows to use a stereo mode inside one DSP, that is, it can feed mid and high 2 times or the coefficients for the high path 4 times. -
Page 19: Erase Flash Mem / Reset To Factory Defaults
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. -
Page 20: In-/Outputs Tab
current PIN was entered correctly, the PIN is changed to the new one. In the status log, an appropriate message shows up. 4.7 In-/Outputs Tab Fig. 13: In-/Output dialog with level, gain reduction and temperature meters The gain tab contains indicators for input and output levels and gain reductions of the limiter as well as controls to set input and output gains, delays, mutes and phase inversions. - Page 21 Setting Delays The delays can be set by typing values in miliseconds into the edit fields or by clicking on the up/down buttons next to te fields. The step depends on the sampling rate, that is, for a sampling rate of 48000 Hz, the step is 1/48 milisecond.
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Page 22: Limiter Tab
Since version 1075.4.2, the dialog has changed. A new feature is the switch between different units (W, dB, dBu, V) and the reference to either the amplifier output or the HD2 output. The switches are located at the bottom right of the dialog. If dB, dBu or volts are used, the impedance of the speaker is used for calculations. -
Page 23: Input And Output Tabs
After a value has been changed in the edit field, it has to be sent to the HD2. You'll notice the submit button to be activated after a change. Fig. 16: Limiterdialog (as above) with values in dBu referred to the HD2 output 4.9 Input and Output Tabs... - Page 24 Fig. 18: The input / output tabs allow to set EQs/filters and show magnitude and phase of the corresponding channel If you use an IIR equalization, place the IIR filters in the output paths. You can see the frequency and phase responses of the path in the blue plot. Note: If a filter is set in an input path, the frequency response will influence a corresponding output path as well.
- Page 25 Fig. 19: Select and copy/paste filters using the context menu (right mouse button)
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