Hertz H8 DSP User Manual
H8 DSP
Digital Interface Processor
USER’S
MANUAL
rev 1.1c
www.hertzaudiovideo.com
H8 DSP
Digital Interface Processor
User’s manual
Index
1. PRODUCT DESCRIPTION / SAFETY PRECAUTIONS ...................................................................................................... 03
2. PACKAGING CONTENTS ................................................................................................................................................... 03
3. H8 DSP and DRC INSTALLATION ..................................................................................................................................... 04
4. CONNECTION PANELS – DESCRIPTION ......................................................................................................................... 05
4.1 Multipolar connector ................................................................................................................................................ 05
4.2 Input signals ............................................................................................................................................................. 06
4.3 Output signals .......................................................................................................................................................... 06
4.4 Inputs - remote control outputs and power supply.............................................................................................. 07
4.5 Controls and settings .............................................................................................................................................. 09
5. 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 ........................................................................................................................................... 12
5.6 Optical in digital input ............................................................................................................................................... 12
5.7 Output signals .......................................................................................................................................................... 13
6. HOW TO SETUP THE H8 DSP WITHOUT A PC ..................................................................................................................... 14
6.1 How to calibrate the master front-rear input sensitivity .................................................................................... 14
6.2 Source de-equalization ............................................................................................................................................ 15
6.3 Amplifiers sensitivity calibration ............................................................................................................................ 17
6.4 How to calibrate the aux in input sensitivities ..................................................................................................... 17
7. H8 DSP SOFTWARE AND DRIVERS INSTALLATION / UNINSTALLATION GUIDE ....................................................... 18
7.1 PC software installation guide ............................................................................................................................... 18
7.2 Drivers installation guide ........................................................................................................................................ 20
7.3 H8 dsp software uninstall ....................................................................................................................................... 21
8. H8 DSP INSTALLATION GUIDE USING A PC ................................................................................................................... 22
8.1 Selecting the master (front / rear) inputs and outputs - target mode .............................................................. 22
8.2 Offline mode ............................................................................................................................................................. 29
8.3 Adjusting acoustic reproduction ............................................................................................................................ 30
8.4 Device info ................................................................................................................................................................. 30
8.5 “File” main menu ...................................................................................................................................................... 30
8.6 “Config” main menu ................................................................................................................................................. 32
8.7 Selected input ........................................................................................................................................................... 33
8.8 Channel map ............................................................................................................................................................. 33
8.9 Select channel .......................................................................................................................................................... 33
8.10 Filter settings ......................................................................................................................................................... 34
8.11 Set distance and delay .......................................................................................................................................... 36
8.12 Graphic equalizer ................................................................................................................................................... 38
8.13 Output level ............................................................................................................................................................ 39
8.14 Memory ................................................................................................................................................................... 40
9. TROUBLESHOOTING ......................................................................................................................................................... 41
9.1 Synchronization with a pc ....................................................................................................................................... 41
9.2 Background noise ..................................................................................................................................................... 41
9.3 Firmware upgrade .................................................................................................................................................... 42
9.4 Rescue mode ............................................................................................................................................................ 43
10. TECHNICAL SPECIFICATIONS .......................................................................................................................................... 44
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H8 DSP
Digital Interface Processor
User’s manual
1. PRODUCT DESCRIPTION / SAFETY PRECAUTIONS
The H8 DSP is a digital signal processor essential to maximize the acoustic performance of your car audio system. It
consists of a 32-bit DSP processor and 24-bit AD and DA converters.
It can connect to any factory system, even in vehicles featuring an integrated audio processor, since, thanks to the
de-equalization function, the H8 DSP will provide a linear signal.
It features 7 signal inputs: 4 Hi-Level, 1 Aux Stereo, 1 S/PDIF optical digital and It provides 8 PRE OUT.
Each output channel has a 31-band equalizer available. It also features a 66-frequency electronic crossover as well as
BUTTERWORTH or LINKWITZ filters with 6-24 dB slopes and a digital time delay line. The user can select adjustments
that allow him or her to interact with the 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.
2- Before connecting the H8 DSP, carefully read this manual. Improper connections may cause damage to the
H8 DSP or to the speakers in the car audio system.
2. PACKAGING CONTENTS
- H8 DSP - Signal Interface Processor
1/2
- Power supply cable / Remote / Inputs
- 3.0 m / 9,84 ft USB cable
- 4.5 m / 177,16” DRC / AC Link cable
- 4 of 3.5 x 13 mm / 0,13” x 0,51”
self-tapping, cross-head fixing screws
- CD ROM with:
• H8 DSP Software
• This advanced manual (.pdf format)
• DRC HE User’s manual
• Test tracks
- Quick start guide H8 DSP
- DRC HE (Digital Remote Control) Control Panel
(optional)
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H8 DSP
191 mm / 7.51”
121 mm / 4.76”34 mm / 1,33”
191 mm / 7.51”
121 mm / 4.76”34 mm / 1,33”
Digital Interface Processor
3. H8 DSP AND DRC INSTALLATION
External dimensions
191 mm / 7.51”
User’s manual
121 mm / 4.76”
3
Mounting dimensions
How to install
4,2x20mm / 0,16”x0,78”
80 mm / 3.14”
183.6 mm / 7.22”
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H8 DSP
Digital Interface Processor
User’s manual
4. CONNECTION PANELS – DESCRIPTION
4.1 MULTIPOLAR CONNECTOR
The H8 DSP features a 20 multipolar interface for input signals, power supply and various control connections.
1: Violet RR+
2: Gray FR+
3: White FL+
4: Green RL+
5: Red REM IN
6: Pink MEM A
7: Brown OPTICAL SELECT
8: N. C.
9: Blue REM OUT
4
TOP VIEW
(Gray) FR- :12
(White) FL- :13
(Green) RL- :14
10: Cyan (light blue) KEY MEM
11: Violet RR-
12: Gray FR-
13: White FL-
14: Green RL-
15: Red REM IN
16: Pink MEM B
17: Orange AUX SELECT
18: Yellow +BATT 12V
19: N.C.
20: Black -BATT
1: RR+ (Violet)(Violet) RR- :11
2: FR+ (Gray)
3: FL+ (White)
4: RL+ (Green)
(Red) REM IN :15
(Pink) MEM B :16
(Orange) AUX SELECT :17
(Yellow) +BATT :18
N.C. :19
(Black) -BATT :20
CABLE SIDE (REAR VIEW)
5: REM IN (Red)
6: MEM A (Pink)
7: OPTICAL SELECT (Brown)
8: N.C.
9: REM OUT (Blue)
10: KEY MEM (Cyan)
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H8 DSP
Digital Interface Processor
4.2 INPUT SIGNALS
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2
1: Violet RR+
2: Gray FR+
3: White FL+
4: Green RL+
11: Violet RR-
12: Gray FR-
13: White FL-
14: Green RL-
1. INPUTS; RL - FL - FR - RR. Hi-level MASTER inputs (SPEAKERS).
The H8 DSP features 4 HI-LEVEL signal inputs to connect amplified signal cables coming from the main analog
source. Input sensitivity is adjustable from 2 to 15 V RMS.
2. AUX IN L - R; auxiliary low-level stereo input.
The H8 DSP features an auxiliary stereo signal input to connect an external source, mp3 player or other audio
sources. Input sensitivity is adjustable from 0.6 to 5 V RMS.
Remark:
connect it to the high-level MASTER inputs (SPEAKERS). Sensitivity is increased by adjusting the IN LEVEL controls
If a low-level output source (PRE OUT) with output signal equal or higher than 2 V RMS is available, you can
(see 8.1.9)
1
3
3. 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
4.3 OUTPUT SIGNALS
1. OUTPUTS CH1÷CH8;
Low-level analog signal.
Connection for RCA cables dedicated to the
system amplifiers.
SUB output is provided with CONSTANT
BASS (when varying the fader, the SUB
volume does not change)
(see 5.6).
(see 5.7).
OUTPUTS
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H8 DSP
Digital Interface Processor
4.4 INPUTS – REMOTE CONTROL OUTPUTS AND POWER SUPPLY
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18: Yellow +BATT
20: Black -BATT
5: Red REM IN
15: Red REM IN
9: Blue REM OUT
10: Cyan KEY MEM
7: Brown OPTICAL SEL
17: Orange AUX SEL
6: Pink MEM A SEL
16: Pink/Black MEM B SEL
1. POWER SUPPLY.
+BATT 12V: 12V Power supply positive connection terminal.
-BATT: Power supply negative connection terminal (GND).
WARNING: make sure the connection polarity is as indicated on the terminals. 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.
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2
3
4
5
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2. REMOTE IN-OUT.
REM IN: input for the processor remote turn on through the source Remote Out signal.
REM OUT: output to turn on other devices / amplifiers connected after the processor.
From the REMOTE-IN signal, the processor only takes 1 second to supply the signal to the REM OUT output.
The 130 mA output current capability can also drive an automotive relay (making sure it doesn’t exceed 130 mA).
WARNING: the H8 DSP must be switched on before any amplifiers are turned on.
The system sources Remote Out must be connected to the product REM IN, and the product REM OUT
is then to be connected to the Remote In of other devices / amplifiers.
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H8 DSP
Digital Interface Processor
User’s manual
3. KEY MEM:
To turn the processor on and off when the vehicle ignition is turned on / off.
Remark:
This signal is memory-dependent: if the processor was turned off by a car sub-key connected to the KEY MEM,
it will turn on again by turning the ignition key on. If the processor was turned off by a different method (e.g. DRC)
while the KEY MEM was still active, it will not turn on again through the KEY MEM and you will have to turn it on by
using either the DRC or REM IN.
4. OPTICAL SEL / AUX SEL:
Selection of the auxiliary OPTICAL or AUX inputs. The terminals can be set up with positive or negative selection. This
function is active at + 12V by setting up the UCS switch as shown in fig. 1, while to obtain a –BATT (GROUND) set up
the switch as shown in fig. 2.
4
AUX SEL
OPTICAL SEL
Fig. 1
TO + 12 V TO + 12 V
TO GND TO GND
AUX SEL
OPTICAL SEL
Fig. 2
5. MEM A SEL / MEM B SEL:
Selection of the DSP “MEM A” o “MEM B” memories. The terminals can be set up with positive or negative
selection. This function is active at + 12V by setting up the UCS switch as shown in fig. 3, while to obtain a –BATT
(GROUND) set up the switch as shown in fig. 4.
Fig. 3
TO + 12 V TO + 12 V
TO GND TO GND
MEM A SEL
MEM B SEL
MEM A SEL
MEM B SEL
Fig. 4
6. DRC:
DRC (Digital Remote Control) connection to configure the processor.
7 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.
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H8 DSP
Digital Interface Processor
4.5 CONTROLS AND SETTINGS
6
3
2
1
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5 4 7
1. 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
2. CLIP: Input clipping detector
If the LED lights up, it indicates clipping on the selected input.
3. DE-EQ CHECK: When lit, the meaning varies based on state
• LED ON: A de-equalization curve has been recorded.
• LED Flashing: You are performing a de-equalization/analysis of the MASTER main input signal
4. DE-EQ SET: Button to activate analysis or de-equalization functions during system calibration without using a PC
(see 6.2).
5. SPEAKER TURN ON: Switch OFF to prevent turning the device on from the MASTER high-level main input
Switch ON allows turning the device on from the MASTER high-level main input
6. UPGRADE MODE: Switch ON allows to update the product in RESCUE MODE
flashing.
7. UCS (User Control Set): 4 selectors dip switch, enabling the AUX SEL, OPTICAL
SEL, MEM A SEL, MEM B SEL terminals activation. The dip switch selection
(see fig.1) determines whether the terminals are active at +12 Volt or
to -BATT (Ground).
(see 4.4.4 / 4.4.5).
(see 8.1.9).
(see 8.1 - 8.2).
(see 6.2).
(see 8.1.9).
(see 4.2.1 ).
(see 5.4).
(see 9.4) and the POWER LED will start
TO + 12 V
TO GND
AUX SEL
OPTICAL SEL
MEM A SEL
MEM B SEL
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H8 DSP
Digital Interface Processor
5 CONNECTIONS
5.1 POWER SUPPLY AND REMOTE TURN ON
User’s manual
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WARNING:
to power the device, use 1 mm2 (16 AWG) cables.
REM IN
Blue REM OUT
Red REM IN
REM IN
REMOTE OUT
Cyan (light blue) KEY MEM
Yellow +BATT 12V
2
- 16 AWG
1 mm
Black -BATT
Ground
Fuse Holder
Not Provided
Suggested Fuse
T1A-delayed
+ -
12V
Battery Ground
Remark: the H8 DSP is internally protected by a
(vedi sez. 5.2.2)
fuse-resistor soldered to its printed circuit
board. To replace it contact a service center.
Using an external fuse is recommended, though
it is not required.
5.2 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:
1. Press the DRC main “POWER” switch (to turn on). Keep the DRC main “POWER” switch pressed (to shut down).
In this case, no other connections Remote In / KEY MEM are required, but they can coexist.
2. Connecting one of the Remote In plugs using a signal coming from a source.
The KEY MEM connection is not required, but it can coexist.
3. Through the KEY MEM. This method is memory-dependent.
4. Through the MASTER (INPUT FL) input. The AUTO TURN ON (ART) function is enabled by connecting an amplified
head unit output to the INPUT FL input channel. This function can be disabled by moving the SPEAKER TURN ON
switch to OFF
(seei 4; 5.5).
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H8 DSP
FRONT
AMPLIFIED RADIO DECK OEM - ORIGINAL AMPLIFIER SOURCE
Digital Interface Processor
5.3 PERSONAL COMPUTER AND DIGITAL REMOTE CONTROL (DRC)
DRC HE (optional)
SRC
MEM
USB cable
(provided)
User’s manual
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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.
5.4 HIGH-LEVEL INPUT SIGNALS
1. SPEAKERS IN HI-LEVEL STEREO FRONT+REAR (see 8.1)
* *
REAR
2. SPEAKERS IN HI-LEVEL MULTICHANNEL (see. 8.2)
FRONT HI
FRONT LOW
*
To disable the Speaker Turn on function on the Front Left channel, move the indicated switch to the left to “OFF” position.
MAX: 4 AMPLIFIED
CHANNELS
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H8 DSP
Digital Interface Processor
5.5 LOW-LEVEL INPUT SIGNALS
AUX IN L/R: Auxiliary analog stereo signal.
Sensitivity is adjustable from 0.6 to 5 V RMS
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MP3 PLAYER
AUXILIARY STEREO
PREAMPLIFIER SOURCE
5.6 OPTICAL IN DIGITAL INPUT
DRC HE (optional)
SRC
MEM
OPTICAL CABLE
PRE OUT
RADIO DECK
AUXILIARY STEREO
PREAMPLIFIER SOURCE
TOSLINK
CONNECTOR
DIGITAL INPUT- WARNING: the digital input accepts up to
96 kHz / 24 bit stereo PCM signals. So DOLBY
DIGITAL (AC3) multi-channel signals coming from
audio/video sources (such as the audio of a film
in 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.
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H8 DSP
Digital Interface Processor
5.7 OUTPUT SIGNALS
OUTPUT TO PRE AMPLIFIERS’ SYSTEM
DRC HE (optional)
SRC
MEM
User’s manual
CH 1 ÷ CH 4 CH 5 ÷ CH 6 CH 7 CH 8
5
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.
OUTPUT TYPE CUT FILTER FILTER TYPE CUT FREQUENCY TIME ALIGNMENT
CH1
CH2
CH3
CH4
CH5
Front Tw LEFT HI PASS LINKWITZ 3500Hz@12dB 0 cm
Front Tw RIGHT HI PASS LINKWITZ 3500Hz@12dB 0 cm
Front WF LEFT BAND PASS LINKWITZ 80Hz@12dB/ 3500Hz@12dB 0 cm
Front WF RIGHT BAND PASS LINKWITZ 80Hz@12dB/ 3500Hz@12dB 0 cm
Rear LEFT HI PASS LINKWITZ 80Hz@12dB 0 cm
CH6
CH7
CH8
Rear RIGHT HI PASS LINKWITZ 80Hz@12dB 0 cm
CENTER BAND PASS LINKWITZ 120Hz@12dB/ 5500Hz@12dB 0 cm
SUBWOOFER BAND PASS LINKWITZ 30Hz@12dB/ 80Hz@12dB 0 cm
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H8 DSP
Digital Interface Processor
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.
The device will store the following default settings:
1.
Front and Rear stereo broadband inputs;
2.
AUX input ;
3.
OPTICAL Input
4.
2 Way Front + Rear + Center + Subwoofer (Vedi 5.7)
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.
6.1 HOW TO CALIBRATE THE MASTER FRONT-REAR INPUT SENSITIVITY
1.
Connect the head unit speaker outputs to the H8 DSP high-level input (see 4.2-5.4). Before turning on the system,
make sure the amplifiers RCA plugs are disconnected from the H8 DSP to avoid speaker damage during the
calibration procedure.
The input calibration procedure must be performed with the ignition turned on. In this case, the car voltage is about
14.0 Volts. The head unit will provide an undistorted output signal at higher volume.
User’s manual
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2. 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 -).
3.
Turn on the device and play track 1 of the CD supplied with the H8 DSP.
• Set all tone controls to zero (flat).
• Set balance and fader to center.
• Adjust the head unit volume to the maximum undistorted output level.
• If the head unit features an adjustable equalizer, make sure that the controls are set to zero (flat).
WARNING:
can not be tested in advance, adjust the volume to approximately
output level is set too low, the device will produce ground noise (hissing sound) when playing music tracks.
This is due to the low signal / noise ratio provided by the head unit to the H8 DSP input. If you have this
problem after you calibrated the amplifiers sensitivity
the H8 DSP calibration procedure as detailed in the following paragraph 4.
Head unit input-level instrument check.
You will need an oscilloscope for this instrument check.
• Connect the head unit output to the oscilloscope.
• Play track 1 of the H8 DSP CD.
• Set tone, fader and balance controls and the equalizer (if any) to zero (flat).
• Turn on the car.
• Adjust the volume control so that the oscilloscope shows a sine wave with
slightly cut peaks, as shown in the figure.
• Note down the volume used by the head unit. It must be left in this position
for the following
the head unit level must be elevated to the
maximum undistorted level
80%
of its maximum. If the head unit
(see 8.1.21), increase the head unit volume and repeat
. If the head unit distortion level
CLIP
CLIP
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