Hertz HDP 1 User Manual

HDP 1

Release 1.1

Revisione1.1

www.hertzaudiovideo.com

UK IT

HDP 1

Advanced Web Manual

TABLE OF CONTENTS

Introduction 3

Package contents 3

Safe Sound 4

General precautions 5

Installation and size 6

Battery / Remote connection and How to replace the fuse 7

Auto Turn-On with Hi-Level inputs 7

How to rotate the Hertz logo 8

Top panel controls: switches and adjustment controls 9

Front and Rear panels 10

Block diagram 11

Configuration diagrams

How to use Remote Volume Control 12

PRE-IN for one subwoofer 13

PRE-IN for two subwoofers 14

HI-IN input 15

HI-IN input and PRE-OUT 16

Cables 17

Technical specifications 18

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HDP 1

Advanced Web Manual

INTRODUCTION

Thank you for purchasing a Hertz product, designed according to the highest quality standards.

Your HPD amplifier is a cutting-edge product of compact size, providing high power and quality of sound.
It will definitely ensure you maximum satisfaction by taking up very small room in your vehicle.
Before the installation, in addition to reading the Quick Start Guide (QSG), the consultation of this user’s manual available on the Hertz
website will let you achieve the highest performance from your amplifier.

PACKAGE CONTENTS

In the package, besides your amplifier, you will find:

• Quick Start Guide ...............................................................................................................................................................

• Warranty Card.....................................................................................................................................................................

• 40 A blade fuse.................................................................................................................................................................. x3

• 4,2 x 16 mm self-tapping, cross-headed fixing screws .......................................................................................................... x4

OPTIONAL

• HRC: SUB volume control.........................................................................................................................................

40

3

HDP 1

Advanced Web Manual

SAFE SOUND

HERTZ AMPLIFIERS CAN BE PART OF A HIGH POWER AUDIO SYSTEM THAT CAN GENERATE VERY HIGH UNDISTORTED

SOUND PRESSURE LEVELS. PLEASE REMEMBER THAT LONG EXPOSURE TO AN EXCESSIVELY HIGH SOUND PRESSURE

LEVEL MAY DAMAGE YOUR HEARING; THEREFORE, PLEASE USE COMMON SENSE AND PRACTICE SAFE SOUND.

Safety must be at the forefront while driving. The listening volume should never obscure the noise coming from the outside of your

vehicle; you should be able to hear the sounds generated by your vehicle in order to promptly face any emergency situation.

To achieve the best possible performance from your new components, we recommend you follow the instructions in this manual

carefully. In order to design and create top level car hi-fi systems you need to understand automobile mechanical and electrical issues

very well; if you think you lack the required knowledge or the proper tools, please consult with a specialized installer.

A professional installation will ensure your system delivers all the performance you have paid for, without affecting the safety and

reliability of your vehicle.

This manual has been designed to provide you with the basic instructions required to install and use this product. However, the range

of possible applications is very wide; to obtain further information, please contact your authorized Hertz dealer or Hertz service center.

You can also send an e-mail directly to the following addresses:

Italy - [e-mail]

Worldwide - [e-mail]

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HDP 1

Advanced Web Manual

GENERAL PRECAUTIONS

• This symbol indicates that you have to pay attention to these instructions. Disregarding them
might cause accidental harms or damage your amplifier.

• Before installing the amplifier, make sure you carefully read and understand all instructions.

• The vehicle electric system must have 12V DC voltage with negative to ground. Make sure your
car has it in order to avoid any damages to your amplifier and to the vehicle.

• Pre-plan the configuration of your new amplifier and the best wiring routes to ease installation.

• Always wear protective eyewear when using tools that may generate splinters.

• During installation, keep the amplifier in its packing as long as possible; this will protect it from damages.

• Secure all auxiliary devices you built to install the components to the vehicle structure through
brackets, screws, nuts and bolts; this insures stability and safety while driving.

• The amplifier detachment while driving can damage the people in the vehicle and other cars. Secure the
amplifier at best, paying utmost attention if installation is inside the passenger’s compartment. Do not carry out
any installation inside the engine compartment.

• Before installing the amplifier, turn off the source and all other electronic devices in the audio system for preventing any damages.

• Make sure the location you chose for the components does not affect the correct functioning of the vehicle mechanic and
electric devices.

• Do not run the cables or install the amplifier next to electronic gearcases.

• Use extreme caution when cutting or drilling the car plate, checking there are no electrical wiring or structural element underneath.

• Before connecting the power cable to the amplifier, disconnect the negative lead ( - ) from the car battery.

• Make sure power cable is not short circuited during installation and connection.

• Power cable must have mechanically resistant and self-extinguishing insulation. Its section have a size corresponding with
what is suggested in this manual. Avoid to run it over or through sharp edges or close to moving mechanical devices. Make
sure it is well fixed all along its length. Block positive and negative cables just close to the amplifier respective power supply
terminal blocks through a clamping screw.

• Use rubber grommets to protect the wire if it runs in a hole of the plate or proper materials if it is close to heat-generating parts.

• To ground the device ( - ) in the right way, use a screw in the vehicle chassis; scrape all paint or grease from the metal if
necessary, checking with a tester that there is continuity between the battery negative terminal ( - ) and the fixing point. If
possible, connect all components to the same ground point; this solution rejects most noise.

• Route all signal cables away from power cables.

• Never run cables outside the vehicle; you would not be protected against wear and in case of accidents.

• When installing speakers and the cables that connect them, make sure that non-insulated parts never touch, even occasionally,
the vehicle cutting parts. If they do, the amplifier protection is activated.

• To prevent all problems, use very good quality cables, connectors and accessories, choosing them in Connection catalogue.

• When installation is over, and before plugging the main power supply fuse, check the system wiring and make sure all
connections were done in the right way.

• Power amplifiers put an increased load on the battery and on its charging system. We recommend checking your alternator
and battery condition to ensure they can handle the increased consumption. Standard electrical systems which are in good
condition should be able to stand this extra load without problems but we recommend the use of an energy storage
capacitor and/or a battery for high level audio systems.

• Put a fuse and its insulated fuse holder 40 cm max. far from the battery positive terminal; connect one end of the power cable
to it after connecting the other end to the amplifier. The fuse value must be 50% higher than the amplifier built-in one. In case
the cable supplies several amplifiers, the fuse value will have to be 50% higher than the sum of the values of all other fuses in
the amplifiers.

• There must be good air circulation where the amplifier is installed; this area must not be affected by humidity, rain, external
deposits or parts coming from the vehicle mechanical devices. Do not hinder in any way the cooling of the amplifier side fins

• Install the amplifier in the vehicle parts where temperature is between 0°C (32°F) and 55°C (131°F).

WARNING. When working in demanding conditions, the amplifier can reach temperatures of around 80 - 90°C (176÷194°F).

Make sure it is not dangerously hot before touching it.

• Periodically clean the amplifier without using aggressive solvents that might damage it. Dampen a piece of cloth with water
and soap, wring it and clean the amplifier. Then use a piece of cloth dampened with water only; eventually clean the amplifier
with a dry piece of cloth.

• Remove dust and solid deposits from the heat sink side fins. Don’t use compressed air on the amplifier since it would push
solid parts in the amplifiers. If necessary, please contact a specialised service centre for internal cleaning. Cooling system
obstruction makes the amplifier go in safety mode

.

5

HDP 1

INSTALLATION AND SIZE

Advanced Web Manual

344 mm / 13.54”

171 mm / 6.73”

46,7 mm / 1.83”

150 mm / 5.90”

330 mm / 12.99”

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HDP 1

Advanced Web Manual

BATTERY / REMOTE CONNECTION AND HOW TO REPLACE THE FUSE

3 x 40 A
BLADE FUSES

GND

+BATTERY

Apply a Fuse

close to positive

pole to protect

+BATTERY wire

AUTO TURN-ON WITH HI-LEVEL INPUTS

ORIGINAL SOURCE

Set the

“HI AUTO TURN-ON”

switch to the
“ON” position

REMOTE OUT

ORIGINAL

SOURCE

PRE - OUT

PRE - IN

L

HI - IN

R

REMOTE
VOLUME
CONTROL

HI-IN
AUTO

TURN-ON

ON OFF

HDP1

Set the “HI AUTO TURN-ON”

switch to the “ON” position

7

HDP 1

HOW TO ROTATE THE HERTZ LOGO

Advanced Web Manual

1

3

Remove and
Rotate

180°

180°

2

4

6

5

PUSH

8

7

9

8

HDP 1

Advanced Web Manual

TOP PANEL CONTROLS: SWITCHES AND ADJUSTMENT CONTROLS

HDP1

REMOTE

8

ON OVL

6

7

TH SPK

LEVEL

34

25

max

1

9

VOLUME

CONTROL

OFF ON

SUBSONIC LOPASS PHASE

22 30

18 40

70 120

40 150

1800

1

LEVEL (0.3 ÷ 5V): Input sensitivity adjustment control.

1

Set to 1 position. Use a CD as source, increase head unit volume
until output distorts, then decrease volume by 1 step in order to
eliminate distortion. Turn LEVEL up until sound becomes
distorted, then turn LEVEL down a bit for optimum sound.

REMOTE VOLUME CONTROL (ON - OFF): Activate ON

2

or deactivate OFF external remote volume control. Connect
external adjustment control to front panel proper connectors.

3

SUBSONIC: (18 Hz ÷ 40 Hz): Crossover point (Hi-Pass filter)

adjustment. Rotating the knob you can select any frequency

between 18Hz and 40Hz. The frequencies below the crossover
point will be attenuated at 24dB/Oct.
This control is useful to remove ultra-low frequencies present in
some audio signals which do no contribute to music information
and might cause distortion or abnormal warming.

4

LO-PASS (40 Hz ÷ 150 Hz): Crossover point adjustment.

Rotating the knob you can select any frequency between
40Hz and 150Hz. The frequencies above the crossover point
will be attenuated at 24dB/Oct.

PHASE (0° ÷ 180°): Phase signal rotation point adjustment.

5

Rotating the knob you can select any phase angle between
0° and 180° (phase reversal). The PHASE angle is centered
at 80Hz. For frequency beyond or below this value, phase angle
decrease.
While listening to the front loudspeaker (driven from other
amplifier), adjust PHASE in order to have a good bass response.

2

3 4

ON: Power LED. It lights up when you turn on the amplifier.

6

If all LEDs (6) (7) (8) (9) turn on at the same time, the amplifier will

5

shut down and you will have to contact a service centre.

TH: Terminal status LED. It lights up when thermal protection

7

is active, above 85°C. The amplifier shuts down until the chassis
temperature goes below 75°C.

OVL: Overload status LED. It lights up when overload occurs

8

on the power output terminals. The amplifier goes in muting for
3 seconds and this LED starts flashing until you turn off the
amplifier. REMOVE THE CAUSE OF OVERLOAD.

SPK: Speaker status LED. It lights up when a speaker touches

9

the car body. The amplifier goes in muting for 3 seconds and
this LED starts flashing until you turn off the amplifier.

REMOVE THE CONTACT BETWEEN SPEAKER WIRE AND
CAR BODY.

9

HDP 1

FRONT AND REAR PANELS

1 2

Advanced Web Manual

76

8 9

PRE - IN

PRE - OUT

L

HI - IN

R

3

PRE-OUT This jack provide Left and Right pre-amplified

1

outputs to drive a separate amplifier. These signals are full

REMOTE
VOLUME
CONTROL

4

HI-IN
AUTO

TURN-ON

ON OFF

5 10 11 1312

HDP1

range, without crossover action.

PRE-IN: Left and Right pre-amplified inputs. Drive power

2

output with L and R mixed signal. Connect to pre-amplified
source output. Signal can be 0.3 to 5V RMS.

HI-IN: Hi-Level signal Left and Right inputs. If the head unit

3

does not feature a pre-amplified output, connect here its
speaker wire to drive Left and Right channels.

REMOTE VOLUME CONTROL: Input for REMOTE SUB

4

VOLUME CONTROL. Connect here the adjustment control that
the amplifier features (optional).

HDP1

FUSE 3 x 40A

POWER (+ BATT): Terminal block for the amplifier 11 ÷ 15V DC

7

power supply positive pole connection. Insert here the battery

+ BATT

REM

GND

OUT - OUT + OUT - OUT +

positive cable. The plug accepts cables up to 2 A.W.G.

REMOTE IN: REMOTE IN terminal for the remote cable

8

coming from the device which turns on the amplifier.

Voltage must be between 7 and 16V DC.

POWER (GND): Terminal block for the amplifier power

9

supply negative pole connection. Insert here the battery
negative cable or wire connected to the vehicle chassis.
The plug accepts cables up to 2 A.W.G.

OUT - Speaker OUT: Negative power terminal, connect to

10

negative speaker terminal.

HI-IN AUTO TURN-ON (ON - OFF): Select ON to turn on the

5

amplifier through the speaker power cable, if the source does
not feature a 12V DC REMOTE OUT. Select OFF if REMOTE
OUT from the source is available.

6

PROTECTION FUSE: 3 x 40A

11

OUT + Speaker OUT: Positive power terminal, connect to

positive speaker terminal.

12

OUT - Speaker OUT: Negative power terminal (same output

as nr.10), connect to negative terminal of second speaker if
needed.

13

OUT + Speaker OUT: Positive power terminal (same output

as nr.11), connect to positive terminal of second speaker if
needed.

10

HDP 1

BLOCK DIAGRAM

OUT

SUB:

SUB

AMP

18 - 40 Hz

SUBSONIC

Lo-pass

SUB

24dB/Oct.

Advanced Web Manual

MONO

STEREO SIGNALS

0-180

PHASE

@ 80Hz

LO-PASS

40-150 Hz

REMOTE

CONTROL

SUB Volume

5V – 300mV

LEVEL

MIX

P3 P4

P2

24dB/Oct.

-50 / 0 / +6 dB

P1

PRE-OUT

S1

BUFFER

& MUTING

B

A = ON

REMOTE CONTROL

A

B = OFF

R

HI-IN

(1.4-24V)

L

PRE-IN

R

RCA prot

L

R

0 dB

MIN - MAX

47K - lin

PRE-OUT

SUB Vol

REMOTE

CONTROL

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HDP 1

HOW TO USE REMOTE VOLUME CONTROL

Advanced Web Manual

HI - IN

HDP1

FUSE 3 x 40A

PRE - OUT

L

R

PRE - IN

REMOTE
VOLUME

CONTROL

HI-IN

AUTO

TURN-ON

ON OFF

OPTIONAL

HRC - REMOTE VOLUME CONTROL

REM

+ BATT

GND

HDP1

OUT - OUT +OUT - OUT +

ON OVL

25

TH SPK

Subwoofer

LEVEL

34

max

1

N.A.

L+R

HDP1

REMOTE

VOLUME

CONTROL

OFF ON

SUBSONIC LOPASS PHASE

22 30

18 40

70 120

40 150

Adjustment controls System Start-up

12

1800