Hertz H8 DSP User Manual

H8 DSP

Digital Interface Processor

USER’S MANUAL

rev 1.1c

www.hertzaudiovideo.com

H8 DSP	User’s manual
Digital Interface Processor

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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Digital Interface Processor

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

- 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

Digital Interface Processor

3. H8 DSP AND DRC INSTALLATION

External dimensions

191 mm / 7.51”

Mounting dimensions

80 mm / 3.14”

183.6 mm / 7.22”

User’s manual 3

121 mm / 4.76”

34 mm / 1,33”

How to install

4,2x20mm / 0,16”x0,78”

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Digital Interface Processor

4.CONNECTION PANELS – DESCRIPTION

4.1MULTIPOLAR 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

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

(Violet)

RR- :11

1:

RR+

(Violet)

(Gray)

FR- :12

2:

FR+

(Gray)

(White)

FL- :13

3:

FL+

(White)

TOP VIEW

(Green)

RL- :14

4:

RL+

(Green)

(Red)

REM IN :15

5:

REM IN

(Red)

(Pink)

MEM B :16

6:

MEM A

(Pink)

(Orange) AUX SELECT :17

7:

OPTICAL SELECT

(Brown)

(Yellow)

+BATT :18

8:

N.C.

N.C. :19

9:

REM OUT

(Blue)

(Black)

-BATT :20

10: KEY MEM

(Cyan)

CABLE SIDE (REAR VIEW)

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Digital Interface Processor

4.2 INPUT SIGNALS

2

3

1:	Violet	RR+
2:	Gray	FR+
3:	White	FL+
4:	Green	RL+	1
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: If a low-level output source (PRE OUT) with output signal equal or higher than 2 V RMS is available, you can connect it to the high-level MASTER inputs (SPEAKERS). Sensitivity is increased by adjusting the IN LEVEL controls

(see 8.1.9)

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 (see 5.6).

4.3OUTPUT 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 5.7).

OUTPUTS

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H8 DSP

Digital Interface Processor

4.4 INPUTS – REMOTE CONTROL OUTPUTS AND POWER SUPPLY

18:

Yellow

+BATT

1

20:

Black

-BATT

5:

Red

REM IN

2

15: Red

REM IN

9: Blue

REM OUT

10: Cyan

KEY MEM

3

7:

Brown

OPTICAL SEL

4

17:

Orange

AUX SEL

6:

Pink

MEM A SEL

5

16:

Pink/Black MEM B SEL

1.POWER SUPPLY.

+BATT 12V: 12V Power supply positive connection terminal. -BATT: Power supply negative connection terminal (GND).

User’s manual 4

6 7

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.

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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Digital Interface Processor

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.

Fig.1

Fig.2

TO + 12 V

TO + 12 V

AUX SEL

TO GND

AUX SEL

TO GND

OPTICAL SEL

OPTICAL SEL

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

Fig.4

TO + 12 V

TO + 12 V

TO GND

TO GND

MEM A SEL

MEM A SEL

MEM B SEL

MEM B SEL

6.DRC:

DRC (Digital Remote Control) connection to configure the processor.

7USB:

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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Digital Interface Processor

4.5 CONTROLS AND SETTINGS

6

3										2
										1
	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 (see 8.1 - 8.2).

2.CLIP: Input clipping detector (see 8.1.9).

If the LED lights up, it indicates clipping on the selected input.

3.DE-EQ CHECK: When lit, the meaning varies based on state (see 6.2).

•LED ON: A de-equalization curve has been recorded.

•LED Flashing: You are performing a de-equalization/analysis of the MASTER main input signal (see 8.1.9).

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 (see 4.2.1 ). Switch ON allows turning the device on from the MASTER high-level main input (see 5.4).

6. UPGRADE MODE: Switch ON allows to update the product in RESCUE MODE (see 9.4) and the POWER LED will start 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).

AUX SEL

TO + 12 V TO GND

OPTICAL SEL MEM A SEL MEM B SEL

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(seei 4; 5.5).

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Digital Interface Processor

5CONNECTIONS

5.1POWER SUPPLY AND REMOTE TURN ON WARNING: to power the device, use 1 mm2 (16 AWG) cables.

REM IN

Blue REM OUT

Red REM IN

Cyan (light blue) KEY MEM

Yellow +BATT 12V 1 mm2 - 16 AWG

Black -BATT	Fuse Holder
	Not Provided
	Suggested Fuse
	T1A-delayed
Ground

REM IN

REMOTE OUT

+ -	(vedi sez. 5.2.2)

12V

Battery Ground

Remark: the H8 DSP is internally protected by a 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

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Digital Interface Processor

5.3 PERSONAL COMPUTER AND DIGITAL REMOTE CONTROL (DRC)

DRC HE (optional)

SRC

MEM

USB cable (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.

5.4 HIGH-LEVEL INPUT SIGNALS

1. SPEAKERS IN HI-LEVEL STEREO FRONT+REAR (see 8.1)						2. SPEAKERS IN HI-LEVEL MULTICHANNEL (see. 8.2)

	*		*
FRONT	REAR	FRONT HI	FRONT LOW

MAX: 4 AMPLIFIED

CHANNELS

AMPLIFIED RADIO DECK

OEM - ORIGINAL AMPLIFIER SOURCE

*To disable the Speaker Turn on function on the Front Left channel, move the indicated switch to the left to “OFF” position.

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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

MP3 PLAYER	PRE OUT
	RADIO DECK
AUXILIARY STEREO	AUXILIARY STEREO
PREAMPLIFIER SOURCE	PREAMPLIFIER SOURCE

5.6 OPTICAL IN DIGITAL INPUT

DRC HE (optional)

SRC

MEM

TOSLINK CONNECTOR

OPTICAL CABLE

DIGITAL INPUTWARNING: the digital input accepts up to 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 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	User’s manual 5
Digital Interface Processor

5.7 OUTPUT SIGNALS

OUTPUT TO PRE AMPLIFIERS’ SYSTEM

CH 1 ÷ CH 4

CH 5 ÷ CH 6

CH 7

CH 8

DRC HE (optional)

SRC

MEM

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	Front Tw LEFT	HI PASS	LINKWITZ	3500Hz@12dB	0 cm
CH2	Front Tw RIGHT	HI PASS	LINKWITZ	3500Hz@12dB	0 cm
CH3	Front WF LEFT	BAND PASS	LINKWITZ	80Hz@12dB/ 3500Hz@12dB	0 cm
CH4	Front WF RIGHT	BAND PASS	LINKWITZ	80Hz@12dB/ 3500Hz@12dB	0 cm
CH5	Rear LEFT	HI PASS	LINKWITZ	80Hz@12dB	0 cm
CH6	Rear RIGHT	HI PASS	LINKWITZ	80Hz@12dB	0 cm
CH7	CENTER	BAND PASS	LINKWITZ	120Hz@12dB/ 5500Hz@12dB	0 cm
CH8	SUBWOOFER	BAND PASS	LINKWITZ	30Hz@12dB/ 80Hz@12dB	0 cm

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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.

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: the head unit level must be elevated to the maximum undistorted level. If the head unit distortion level can not be tested in advance, adjust the volume to approximately 80% of its maximum. If the head unit

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 (see 8.1.21), increase the head unit volume and repeat 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

CLIP

CLIP

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