Hertz H8 DSP User Manual
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Hertz H8 DSP User Manual

Digital interface processor
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H8 DSP
Digital Interface Processor
USER'S
MANUAL
rev 1.0
www.hertzaudiovideo.eu

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  • Page 1 H8 DSP Digital Interface Processor USER’S MANUAL rev 1.0 www.hertzaudiovideo.eu...

  • Page 2: Table Of Contents

    CONNECTIONS .................................. 10 5.1 Power supply and remote turn on ......................... 10 5.2 How to turn the h8 dsp on / off ..........................10 5.3 Personal computer and digital remote control (drc) .................... 11 5.4 High-level input signals ............................11 5.5 Low-level input signals ............................

  • Page 3: Product Description / Safety Precautions

    H8 DSP through a remote control device called DRC. WARNING: 1- To Install the software and set up the H8 DSP a PC provided with Windows XP, Windows Vista, Windows 7, Windows 8 or Windows 10 operating system, 1.5 GHz minimum processor speed, 1 GB RAM minimum memory and a graphics card with a minimum resolution of 1024 x 600 pixels is required.

  • Page 4: H8 Dsp And Drc Installation

    H8 DSP User’s manual Digital Interface Processor 3. H8 DSP AND DRC INSTALLATION External dimensions 191 mm / 7.51” 191 mm / 7.51” 191 mm / 7.51” Mounting dimensions How to install 4,2x20mm / 0,16”x0,78” 183.6 mm / 7.22” 183.6 mm / 7.22”...

  • Page 5: Connection Panels - Description

    H8 DSP User’s manual Digital Interface Processor 4. CONNECTION PANELS – DESCRIPTION MULTIPOLAR CONNECTOR The H8 DSP features a 20 multipolar interface for input signals, power supply and various control connections. 1: Violet 2: Gray 3: White 4: Green 5: Red...

  • Page 6: Input Signals

    MASTER inputs (SPEAKERS). Sensitivity is increased by adjusting the IN LEVEL controls (see 8.1.9) Optical digital S/PDIF input. Connect an optical fiber cable with TOSLINK connector. The H8 DSP accepts PCM input signals up to 96kHz 24 bit sampling frequency (see 5.6) OUTPUT SIGNALS OUTPUTS CH1÷CH8;...

  • Page 7: Inputs - Remote Control Outputs And Power Supply

    A misconnection may result in damage to the H8 DSP. After connecting to power supply, wait at least 10 seconds before turning the H8 DSP on. REMOTE IN-OUT. REM IN: input for the processor remote turn on through the source Remote Out signal.
  • Page 8 DRC (Digital Remote Control) connection to configure the processor. USB: USB (type B) connection plug, to connect the processor to a PC and manage its functions through the H8 DSP software. The connection standard is USB 1.1 / 2.0 / 3.0 compatible.

  • Page 9: Controls And Settings

    H8 DSP User’s manual Digital Interface Processor CONTROLS AND SETTINGS IN level: Input signals adjustments. By turning the knobs counter-clockwise, sensitivity decreases; by turning them clockwise, it increases. This setting is important for an optimal signal / noise ratio (see 8.1 - 8.2) CLIP: Input clipping detector (see 8.1.9)

  • Page 10: Connections

    HOW TO TURN THE H8 DSP ON / OFF The H8 DSP is on when the POWER ON LED lights up in white. It can be turned on / off in the following ways: Press the DRC main “POWER” switch (to turn on). Keep the DRC main “POWER” switch pressed (to shut down).

  • Page 11: Personal Computer And Digital Remote Control (Drc)

    (provided) WARNING: if a DRC is not installed in the system the H8 DSP is set up with the volume adjustment to the maximum acoustic level. Connecting the processor without performing the required adjustments may lead the system to play at full power causing a strong acoustic noise and damaging the speakers.

  • Page 12: Low-Level Input Signals

    DVD) or DTS can not be reproduced. The output of these devices will therefore be set in STEREO mode for the signal to be reproduced. If digital signals at frequency higher than 96kHz (Ex. 192 kHz) are supplied, the H8 DSP locks up.

  • Page 13: Output Signals

    DRC HE (optional) WARNING: if a DRC is not installed in the system the H8 DSP is set up with the volume adjustment to the maximum acoustic level. Connecting the processor without performing the required adjustments may lead the system to play at full power causing a strong acoustic noise and damaging the speakers.

  • Page 14: How To Setup The H8 Dsp Without A Pc

    6. HOW TO SETUP THE H8 DSP WITHOUT A PC The H8 DSP can be used without a PC and in this case it will not be possible to use the sole the DE-EQ (de-equalization) function to eliminate any pre-existing equalization in the OEM audio system.

  • Page 15: Source De-Equalization

    This means that the response curve is not flat and the difference between the highest and the lowest level can reach 6 dB. By calibrating the device so that the LED never lights up, the H8 DSP sensitivity may be suboptimal (low) and you may experience noise (whistle) on the speakers.
  • Page 16 • The DE-EQ LED turns on to show that you recorded a de-equalization curve, otherwise it will be off. • If the DE-EQ CHECK LED on the H8 DSP is on, you can run the de-equalization procedure again. The new data will erase the ones previously stored.

  • Page 17: Amplifiers Sensitivity Calibration

    AUX IN: To use this input install the DRC (optional), or activate it through the specific AUX SEL wire (see 4.4.4). (see 4.5.7) - If a source with a CD player is connected to the AUX input, disconnect the H8 DSP outputs from the amplifiers and proceed as detailed in chapters 6.1.3 - 6.1.4...

  • Page 18: H8 Dsp Software And Drivers Installation / Uninstallation Guide

    7. H8 DSP SOFTWARE AND DRIVERS INSTALLATION / UNINSTALLATION GUIDE PC SOFTWARE INSTALLATION GUIDE Insert the “H8 DSP Setup CD 1.0” CD-ROM into the CD player of the PC you are going to use. Windows XP: select My Computer from the Windows START menu;...
  • Page 19 H8 DSP User’s manual 7 Digital Interface Processor Windows XP: select NEXT to continue with the installation or CANCEL to interrupt it; Windows Vista: select NEXT to continue with the installation or CANCEL to interrupt it; Windows 7: select NEXT to continue with the installation or CANCEL to interrupt it;...

  • Page 20: Drivers Installation Guide

    Windows 7 / 8 / 10 The peripheral device has been correctly installed and is ready for use. Remark: The H8 DSP uses HID drivers already integrated in Windows. For this reason, they are not included in the CD and will always install automatically.

  • Page 21: H8 Dsp Software Uninstall

    Start / All Programs / H8 DSP / uninstall. Procedure 2 To uninstall the H8 DSP PC software you can also follow the standard procedure: Start / Control Panel / Applications Installation / H8 DSP / uninstall.

  • Page 22: H8 Dsp Installation Guide Using A Pc

    Make sure that the IN Level knobs for the inputs used (L / R Front, L / R Rear, Aux IN L-R) are set to minimum sensitivity as in the figure (position -). Turn on the H8 DSP and connect the USB cable to a PC. Start H8 DSP software by clicking the icon previously created on the PC desktop.
  • Page 23 H8 DSP User’s manual 8 Digital Interface Processor If synchronization is successful, a dialog box will show the data exchange between processor and software. Wait a few seconds and, finally, confirm by selecting OK. At this point you need to have in mind the system you want to develop beforehand, since from this moment if you want to change any of the settings you will have to go through the guided procedure all over again.
  • Page 24 (hissing sound) when playing music tracks. This is due to the low signal / noise ratio provided by the H8 DSP input head unit. If you have this problem,...
  • Page 25 This means that the response curve is not flat and the difference between the highest and the lowest level can reach 6 dB. By calibrating the device so that the LED never lights up, the H8 DSP sensitivity may be suboptimal (low) and you may experience noise (whistle) on the speakers. A few quick LED flashes indicate only a small distortion when handling maximum peaks (very occasional) of music tracks.
  • Page 26 Select CANCEL to exit the procedure. Processor PRE OUT outputs (Ch1÷Ch8) allocation. The H8 DSP features 8 PRE output and the software will automatically assign a number from 1 to 8 for the analogue outputs. With DEFAULT settings the channels available are the following: CH1=Front TW LEFT;...
  • Page 27 Stop playing the Test track, remove the supplied Setup CD from the CD player of your head unit and then select OK. Once the de-equalization is complete, the H8 DSP DE-EQ CHECK LED will turn on indicating that you have recorded a curve. If the de-equalization is repeated, new data will replace the previous one.
  • Page 28 A. Amplifiers sensitivity calibration by listening. • Place the head unit volume where the H8 DSP inputs were calibrated and play a highly dynamic track. • Work on the amplifiers sensitivity controls slowly bringing them to higher sensitivity (less than 4.0 Volts).

  • Page 29: Offline Mode

    AUX IN: DRC (optional) must be installed in order to activate this input or through the use of the dedicated AUX SEL terminal (see 4.4.4) - If a source with a CD player is connected to the AUX input, disconnect the H8 DSP outputs from the amplifiers and proceed as detailed in chapters 6.1.3 - 6.1.4 - If the source to be connected to the AUX IN input has no CD player (e.g.

  • Page 30: Adjusting Acoustic Reproduction

    DEVICE INFO This window indicates whether the H8 DSP is correctly connected to the PC and the DRC. It also shows the device Firmware version.
  • Page 31 , and checks if any software / firmware www.bitdrive.it updates to the H8 DSP and DRC are available, in order to update the devices you are using. To perform this operation, your PC has to be connected to the internet Check for Updates on startup: when enabled the availability of new firmware/PC Software updates is checked automatically each time you start the program.

  • Page 32: Config" Main Menu

    • Shutdown time: delay between turning the REMOTE OUT signal off for the amplifiers and turning the H8 DSP off. It is generally not necessary to change this parameter, but can be decreased if your amplifiers produce a “Bump” when shut down...

  • Page 33: Selected Input

    The Select Input window shows the source that is active while the H8 DSP is connected to the PC. You can select the desired source by clicking on it. Once the H8 DSP has been disconnected from the PC, you can select the H8 DSP input source through the DRC or the terminal wire (see 4.4.4 / 4.4.5)

  • Page 34: Filter Settings

    8.10 FILTER SETTINGS The H8 DSP has five crossover filters, one for each output channel. Each filter allows the setting of a single output channel parameters Xover L/R Link: modifications applied to one of the channels (right or left) will also automatically be applied to the other one.
  • Page 35 - Hi-P Slope 12/24 dB/Oct (Linkwitz) 6/12/18/24dB/Oct (Butterworth) - Lo-P Slope 12/24 dB/Oct (Linkwitz) 6/12/18/24 dB/Oct (Butterworth) When starting the software the H8 DSP offers Linkwitz with 12 dB/Oct. slope by default. E.g.: If you select Band Pass as filter type, the slope will be applied to both hi-pass and low-pass as the default slope, but it is also possible to unbind them.

  • Page 36: Set Distance And Delay

    If you set the distances of the different speakers in your system, the H8 DSP will automatically change them into time (ms - milliseconds). It does not assign a delay (0.0 ms) to the farthest speaker (usually the Subwoofer) but progressively...
  • Page 37 “driver” listening point has been set, the Fig. 5 H8 DSP will not re-calculate the delays for the new reference point because the buttons available in the SELECT A CHANNEL diagram are merely descriptive. Their only purpose is to...

  • Page 38: Graphic Equalizer

    User’s manual Digital Interface Processor 8.12 GRAPHIC EQUALIZER The H8 DSP software features a 31-band, ± 12 dB graphic equalizer for each system channel. In compliance with ISO requirements, frequencies are equally spaced at 1/3 Oct. from 20 to 20 kHz.

  • Page 39: Output Level

    8.13 OUTPUT LEVEL This section details the output levels of the H8 DSP channels as displayed by the software. Please note the description of each one of the points marked with numbers in the image below. By acting on one of the sliders belonging to the output channels, you can adjust the output level (-40 ÷ 0 dB) for each channel.

  • Page 40: Memory

    A good compromise needs to be found, depending on the listener. 8.14 MEMORY The H8 DSP uses memory A by default for the system’s configuration; however, it also offers the possibility to store and recall two memories (A, B). By pressing the MEMORY button on the main menu, different functions are available for the featured presets.

  • Page 41: Troubleshooting

    2. The H8 DSP does not connect to the PC software - If, while tuning the system with a laptop PC, the H8 DSP is switched off and then on again, the connection is lost and the software can not “finalize” the selected setup. If you do not want to lose the modifications and setup previously selected, proceed as per the following steps: a- save the setup as a file on the PC using the function FILE / SAVE SETUP;...

  • Page 42: Firmware Upgrade

    To use the H8 DSP again, the program on the PC must be closed and the H8 DSP turned off. 7. turn the H8 DSP back on and restart the PC software. If the H8 DSP firmware update is completed correctly, the dialogue window will display: - new H8 DSP Firmware version.

  • Page 43: Rescue Mode

    Digital Interface Processor RESCUE MODE If, when launching the H8 DSP PC software the “H8 DSP Warning” window appears, the user can choose between the following two ways to proceed: A - Use a previous version of the PC software.

  • Page 44: Technical Specifications

    H8 DSP User’s manual 10 Digital Interface Processor 10. TECHNICAL SPECIFICATIONS POWER SUPPLY Operating power supply voltage 10.8 ÷ 14.4 VDC Power supply 7.5 ÷ 15 VDC Idling current 0,4 A Switched off without DRC 2,5 mA Switched off with DRC...

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