HERTZ HMR 15 Marine Car Audio System Owner’s Manual

: June 5, 2024
: HERTZ

Table of Contents

PRECAUTION
FCC STATEMENT
CAUTIONS ON HANDLING
PACKAGING CONTENTS
INSTALLATION
Installation Cautions
MOUNTING
CONNECTIONS.
CONTROLS
87.5 – 107.9MHz
TROUBLESHOOTING
TECHNICAL SPECIFICATIONS
CEA SPECIFICATIONS.
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

HMR 15 Marine Car Audio System
Owner’s Manual
106.50 EUR
FM1 USB RPT RDM LOUD EQ
HMR15AS SRC BAND HMR 15
OWNER’S MANUAL
Marine-grade source units
hertz-audio.com

PRECAUTION

WARNING: for your safety, while boating, keep the volume to a level at which external sounds can be heard.

FCC STATEMENT

This unit uses precision parts and components for its operation. In the event of any operating issues, never open the case or disassemble the unit. Contact your Hertz dealer or service center.
2.1 This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1)This device may not cause harmful interference. (2)This device must accept any interference received, including interference that may cause undesired operation.
2.2 Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

FCC ID: 2ASUD-HMR15

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.

FCC Radiation Exposure Statement.
This equipment complied with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance 20 cm between the unit & your body. 3. The Bluetooth word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Elettromedia srl is under license. Other trademarks and trade names belong to their respective owners.
4. IC warning
This device complies with Industry Canada’s license-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) This device may not cause interference
(2) This device must accept any interference, including interference that may cause undesired operation of the device.
This Class B digital apparatus complies with Canadian ICES-0003.
WARNING: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
IC ID: 24882-HMR15
Cleaning the Body
– Use a soft, dry cloth and gently wipe off any dirt or dust.
– For persistent dirt, apply some neutral detergent diluted in water on a soft cloth, wipe off the dirt gently, then wipe again with a dry cloth.
– Do not use benzene, thinner, boat cleaner, etc., as these substances may damage the body or cause the paint to peel. Also, leaving rubber or plastic products in contact with the body for long periods of time may cause stains.

USB Port
– The USB memory sticks must be recognized as “USB” to work properly. Some models may not operate correctly. In the event data is lost or damaged under any condition, Elettromedia srl shall not be liable for any damage. When using the USB memory stick, we recommend that you backup your data (music) to a personal computer before using it.
– Data (music) files may be damaged when USB memory sticks are removed while the device is reading data, or by Static electricity and/or an electrical surge.
– Connect/disconnect the USB memory stick when it is not accessed.
– Disconnect the USB memory device when not in use.

CAUTIONS ON HANDLING

Protect from high temperatures. Exposure to direct sunlight for an extended period of time can produce a very high temperature in your vessel. Cooldown the interior before starting playback.

PACKAGING CONTENTS

DIMENSIONS

INSTALLATION

5.1 Before Starting

This set is exclusively for use in vessels with a negative ground 12 V power supply.
Read these instructions carefully.
Make sure the battery “-” terminal is disconnected before starting. This is to prevent short circuits during installation. (Figure 1)

Installation Cautions

In order to avoid any interference, do not install the tuner module or control unit in the proximity of the engine compartment.
The use of unauthorized parts can cause permanent damage to the unit.
Always check your wire connections to ensure proper installation before turning on the unit.
Consult with your nearest dealer for proper installation or if other accessories are needed to complete the installation.
Seek assistance if modifications or drilling holes to your vessel is needed.
Do not install the unit where it will be subjected to excessive moisture, dust, dirt, foreign particles or vibration. Areas of high temperature from the engine, direct sunlight, or heat sources should also be avoided.
Do not install the unit in a location where it will interfere with the vessel operation, or it will injure the passengers if there is a sudden or emergency stop.

MOUNTING

HMR 15

WARNING: Before drilling or cutting, make sure there is adequate space behind the mounting surface to fit the HMR 15, including its wire harness

CONNECTIONS.

12 pin Harness pin out

Note: cable out view

CONTROLS

Operational Panel

8.2 Name of Buttons and their Functions
Button
– Mute ON / OFF (short press)
– Power On (short press)
– Power OFF (long press)

VOL +/- Button

Adjust volume level AS Button

– AM/FM mode: entering manual tuning (short press) the display shows “MANUAL”. The System will revert to “AUTO” mode after a few seconds if no button is pressed

FM mode: auto storing of the first 18 strongest stations (FM1, FM2, FM3). (Long press).
AM mode: auto storing of the first 12 strongest stations (AM1, AM2). (Long press).
USB mode: a long press enter USB music file browsing (please see “9.3 use mode operation”)

/ Button

AM/FM mode: previous/next preset station (short press).
AM/FM mode: SEEK the next/previous strongest station (long press).
USB/BT mode: previous/next track (short press).
USB/BT mode: fast forward / rewind (press and hold).

/ Button

AM/FM mode: save a preset station (long press). (please see “9.2 Radio operation”).
USB/BT mode: PLAY or PAUSE playback (short press).

BAND Button

AM/FM mode: change band.
USB mode: change display info (Title, Artist Album name, Track number and Playback time) (short press).

SRC Button

Toggle the audio source (short press).
Enter into system MENU (long press).
Then short press “SRC” to move to the next option.
Use the “VOL +/-” button to change the option value.

9.1 Basic Operation

WARNING: when the unit is turned on, starting and stopping the engine with its volume raised V.) to the maximum level may cause hearing damage. Make sure you adjust the volume in advance

Power On/Off
Note: –
Start the engine before using this unit.- Be careful about using this unit for a long time without running the engine. If you drain the vessel battery, you may not be able to start the engine and this can reduce the service life of the battery.

Start the engine.
Engine ON position
Press the° button to turn on the power in standby mode. Press and hold to turn off the
Press the SRC button to toggle the source among Tuner, USB, BT Music, and Aux-In.

Adjusting the volume
Press the VOL + / VOL- button to increase or decrease the volume. The adjustable range of volume is 0 to 40.
WARNING: while boating, keep the volume at a level at which external sounds can still be heard. Please be aware of the volume levels in residential, family areas, and local volume level ordinances.

System menu

– Press and hold SRC to enter the system menu.
Press SRC to move to the next option.
Use the VOL +/- button to change the option value/setting.

Subwoofer Vol.: Press VOL + or VOL – to adjust the desired Subwoofer volume level range from -13+7
Subwoofer LP: Press VOL + or VOL – to change Subwoofer Lo-Pass filter: 80 - > 120 -> 160 Hz
Dimmer: Press VOL + or VOL – to select dimmer ON/OFF.
Bass: Press VOL + or VOL – to adjust the desired Bass level range from -7 to +7.
Treble: Press VOL + or VOL – to adjust the desired Treble level range from -7 to +7.
Balance: Press VOL + or VOL – to adjust the balance between the right and left speakers from R10 (full right) to L10 (full left).
Fader: Press VOL + or VOL – to adjust the Fader between the front and rear speakers from R10 (full rear) to F10 (full front).
Beep: Press VOL + or VOL – to select beep on/off.
EQ (Preset Equalizer Setting): Press VOL + or VOL – to change EQ: Hertz EQ -> Classic -> Pop.
LOUD: Press VOL + or VOL – to select loudness ON/OFF.
Area: Press VOL + or VOL – to select between USA, Europe.
P-VOL: Press VOL + or VOL – to select the desired volume level upon turn on.

9.2 Radio Operation
Select Tuner as Playing Source
Press the SRC button to select the Tuner mode.
Global Tuner
This unit is initially set to USA frequency intervals of 10KHz for AM and 100KHz for FM.
When using it outside the USA, the frequency reception range can be switched to the intervals below.

FM

FM	Frequency spacing Frequent cyrange	Europe standard	Europe Standard
10KHz9KHzFrequency range	10KHz	9KHz
Frequency range	530 – 1710KHz	522 – 1620KHz
FM	Flange Frequencyspacing	100KHz	50KHz
Frequency range	87.5 – 107.9MHz	87.5 – 108MHz

87.5 – 107.9MHz

Select the Radio Band
Press the BAND button to select one radio band from FM1, FM2, FM3, AM1, AM2.
Preset station selection
short press SEEK – to move to the previous preset.
short press SEEK + to move to the next preset.
SEEK Tuning
long press SEEK – to SEEK the previous strongest station.
long press SEEK + to SEEK the next strongest station.
Manual Tuning
short press AS button to enter manual tuning.
the display shows MANUAL (the system reverts to AUTO mode after a few seconds if no button is pressed).
press SEEK – or SEEK + to manually tune the desired frequency (the system reverts to AUTO mode after a few seconds if no button is pressed).
Auto Store
Only stations with sufficient signal strength will be detected and stored in the memory.
Press and hold the AS button to automatically find the first 18 strongest stations and store them into presets.
The new stations replace any stations already stored in the band.
Save a preset
Tune the desired station/frequency and then press and hold the button, the preset number starts to blink. Use the SEEK buttons to select desired preset number then long-press the button to save it.

9.3 USB Mode Operation
Connect

Insert a USB device into the USB pigtail.
To remove the USB device, you should select another source or turn off the power, in order to avoid damaging the USB device. Then take off the USB device.

Select a Track

Press the button to move on to the next track/song. Press the button to go back to the previous track/song.
Press and hold the button to fast forward through the track/song. Press and hold the button to fast rewind through the track/song.

Play / Pause
Press the button to pause the track/song that is currently playing.
Press the button to resume playing the track/song that has been paused.
Repeat Feature
This function allows you to Repeat All tracks/songs, repeat the currently playing track/song or turn the Repeat feature OFF.

Press AS button once, it will display “REPEAT ONE”. The “RPT” logo lights up.
Press AS twice, it will display “RANDOM”. The “RDM” logo lights up.
Press AS button three times, it will display “REPEAT ALL”. The “RPT” logo turns off.

Browsing
– Long press the “AS” button to enter USB file browsing, playback stops, then use the “SEEK” buttons to find the
desired folder (folders are distinguished by the symbol “>” before the name) or track.
– Press the “AS” button to enter the folder or to play the selected song.
– Press the “BAND” button to exit the current folder.
– The system will revert to “Playback” mode after a few seconds if no button is pressed.
– The upper bar will display the current browsing level. Example:

“_——-“ means that you are browsing the USB ROOT.
“-_——“ means that you entered into a folder.
“–_—–“ means that you entered into a folder contained in another folder.

Track Info
Short press the BAND button to change the displayed info.
9.4 AUX In Mode Operation
The AUX-In RCA inputs in this system are provided to allow playback of sounds and music from external devices connected to this unit. Press the SRC button to select “AUX In”.

9.5 Bluetooth Operation
Pair the Bluetooth Device

From your Bluetooth-enabled device, turn Bluetooth ON and search for Bluetooth device.
When a list of available Bluetooth devices appears on your Bluetooth device select HMR 10
“CONN. OK” will appear on the display.
The unit will automatically enter the BT Music source and you can now start streaming audio from your Bluetooth-enabled device.

Note:
When the device is connected long-pressing the AS button the device will be disconnected. Short press AS
button to reconnect the same device (it may take up to 20 seconds).
WARNING: Please avoid operating your connected mobile phone while audio streaming as this may cause noise or stuttering on the song playback. Audio streaming may or may not resume after telephone interruption as this depends on the mobile phone used.
Play / Pause
Press the button to pause the track/song that is currently playing.
Press the button to resume playing the track/song that has been paused.
Select a Track

Press the button to move on to the next track/song.
Press the button to go back to the previous track/song.

Note:

Playing order will depend on the Bluetooth audio player. When the button is pressed some A2DP devices will restart the current track depending on the duration of the playback. Some Bluetooth audio players may not allow play/pause synchronization with this unit. Please make sure both the device and the main unit are in the same play/pause status in BT Music mode.

TROUBLESHOOTING

10.1 General

Problem	Cause	Remedy
The unit cannot power on.	The unit fuse is blown.	Replace with a new fuse of

the correct value
Vessel battery fuse is blown.| Replace with a new fuse of the correct value
No/low audio output.| Incorrect audio output connection.| Check to wire and correct it.
Volume set too low.| Increase volume level.
Speakers damaged.| Replace speakers.
Heavily biased volume balance.| Adjust the channel balance to the center position.
Speaker wiring is in contact with the metal part of the vessel.| Insulate all speaker wiring connections
Poor sound quality or distortion.| The Speaker power rating does not match the unit.| Replace speakers.
Wrong connections.| Check to wire and correct it.
Speaker is shorted.| Check wiring and correct it.
The unit resets itself when the engine is off.| Incorrect connection between ACC and Battery.| Check to wire and correct it.
The auto seeks function can not find any stations.| The antenna cable is not connected.| Insert the antenna cable securely.
The signals are too weak.| Select a station manually.
10.2 USB
Problem| Cause| Remedy
The USB device cannot be inserted.| The USB device has been inserted incorrectly.| Reverse the connection direction of the USB device and try again.
The USB connector is broken.| Replace with a new USB device.
The USB device is not recognized.| The USB device is damaged.| Disconnect the USB device and reconnect. If the device is still not recognized, try replacing it with a different USB device.
Connectors are loose.
No sound was heard with the display showing “No File’.| MP3/WMA/WAV file is stored in the USB device.| Store these files properly in the USB device.
Sound skips or is noisy.| MP3/WMA/WAV files are not encoded properly.| Use properly encoded MP3/WMA/WAV* files.
Only 16bit/44.1kHz
10.3 Bluetooth
Problem| Cause| Remedy
Cannot pair the Bluetooth-enabled device with the audio system.| The device does not support the profiles required for the system.| The external BT device is not compatible.
The Bluetooth function of the device is not enabled.| Refer to the user manual of the device for how to enable the function.
Audio quality is poor after connection with a Bluetooth-enabled device.| The Bluetooth reception is poor.| Move the device closer to the audio system or remove any obstacle between the device and the system.

TECHNICAL SPECIFICATIONS

FM TUNER|
---|---
Frequency Range| USA 87.9 – 107.9 MHz
Europe 87.5 – 108.0 MHz
AM TUNER|
Frequency Range| USA 530 – 1710 KHz
Europe 522 – 1620 KHz
AUDIO| 50 W x 4 (@ 4 Ohm)
Maximum Power Output Max Output Level| 6 x 4 V RMS
@ 0.1 % THD| (Front – Rear – Sub)
Controls| Treble, Bass, Balance, Fader, Loudness
Preset EQ| Hertz EQ, Classic, Pop
Subwoofer Lowpass Filter AUX Input| 80, 120, 160Hz
USB| Stereo RCA Plugs
USB| 2.0 Full Speed
USB Port| 1 A
USB Voltage| 5.0 V
Supported Audio Format| MP3, WMA, WAV(16bit/44.1kHz only)
Maximum MP3/WMA

Songs

| Max Folder 6000

Max File 60000

USB Flash Drive| Max Capacity 32 Gb
Compatible Format| FAT/FAT32
BLUETOOTH

Specification| Bluetooth Version 5.0
Supported Profiles| • A2DP (Advanced Audio
Distribution Profile)
• AVRCP 1.5 (Audio/Video Remote
control profile)
• SSP (Simple Secure Pairing)
GENERAL
Power Supply Voltage Grounding System| 12 V DC (10,5 to 16 V allowable)
Speaker impedance| Negative Ground
IP Protection| 4-8 ohms per channel
Over Voltage| IP66
Over Temperature| Alarm
| Protection

NOTE: Specifications and design are subject to change without notice for further improvement

CEA SPECIFICATIONS.

Output power @ 4Ω, ⩽1% THD+N, 14.4 V: 22 W x 4 RMS

To avoid an excessive overheating, the unit will enter in
Safe Mode and mute the audio output
A warning will also be displayed on-screen with instructions to turn the unit off. Until normal operating temperature is restored.

PART OF ELETTROMEDIA
Strada Regina Km 3,500 – Marignano
62018 Potenza Picena (MC) Italy
T +39 0733 870 870
– F +39 0733 870 880
www.elettromedia.it
All specifications are subject to change without noticeFML022_REV.22A