Hill Audio IMM-2320V2 (B) Manuale utente
- Tipo
- Manuale utente
RevA 10-2014
Welcome
Thank you for choosing Hill Audio for your sound system. To make sure that this product meets your
expectations and provides long-term, reliable performance, please read and follow this instruction
manual carefully.
Important safety instructions
Read these instructions and all markings on the product. Keep these instructions.
Heed all warnings and instructions, both in this manual and on the product.
Clean only with a dry cloth. Unplug from AC supply before cleaning.
Do not use this product near water and avoid any exposure to water.
Before connecting this product to any AC supply, make sure you check whether the AC mains vol-
tage and frequency match the indication on the product and its packaging.
Only connect this product to an AC supply with sufficient power handling, protective earth con-
nection, ground-fault (earth-fault) protection and overload protection.
Disconnect the product from the AC supply during thunderstorms. Also disconnect from the mains
supply if the product is not being used for long periods.
Make sure any heat sink or other cooling surface, or any air convection slot , is exposed sufficiently
to free air circulation and is not blocked.
Do not operate this product in environmental temperatures exceeding 35 degrees Celsius and/or
85% relative humidity.
Position the product in a safe and stable place for operation, out of reach of unauthorized persons.
Make sure any cable connections to and from the product are neither subject to potentially des-
tructive mechanical impact nor present any risk of stumbling or other accident risk to people.
Audio equipment may generate sound pressure levels sufficient to cause permanent hearing
damage to persons. Always start up at low volume settings and avoid prolonged exposure to sound
pressure levels exceeding 90 dB.
Do not open this product for service purposes. There are no user-serviceable parts inside.
Warranty will be void in any case of unauthorized service by the user or other unauthorized persons.
Take any precaution required by local law, applicable regulations or good business practice to avoid
injury to people or material damage by use of this product.
Explanation of symbols used in this manual and on the product:
DANGER!
Safety hazard.
Risk of injury or death.
WARNING!
Fire hazard.
WARNING!
Hazardous voltage.
Risk of severe or fatal
electric shock.
ATTENTION!
Read manual
before installation
and operation.
Manual Language
UK This user manual is written in English. For other languages, visit www.hill-audio.com
FR Ce guide est écrit en anglais. Pour les autres langues, visitez: www.hill-audio.com
DE Diese Anleitung ist in Englisch verfasst. Für andere Sprachen: www.hill-audio.com
ES Este manual está escrito en Inglés. Para otros idiomas, visite: www.hill-audio.com
PT Este manual está escrito em Inglês. Para outros idiomas, visite: www.hill-audio.com
IT Questo manuale è scritto in inglese. Per altre lingue, visitare: www.hill-audio.com
PAGE 1
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
PAGE 2
Health advice
This unit produces and absorbs electromagnetic radiation. The strength of radiation and the sensitiv-
ity for disturbing interference matches the CE and FCC requirements. A corresponding sign is printed
on the backside of the unit. Any change or modification may affect the behavior of the unit concerning
electromagnetic radiation and it may not then meet CE requirements. The manufacturer takes no
responsibility in this case.
Functional advice
This unit is immune to the presence of electromagnetic disturbances – both conducted and radiated
- up to a certain level. Under peak conditions, the unit is classified to show a “class C” performance
criteria and may encounter temporary degradation or loss of function which may need manual help
to recover. In such case, disconnect the AC power from the unit and reconnect it again to recover.
Environmental advice
This unit is built to conform to the ROHS standards and the WEEE directive 2002/96/EC of the
European Parliament and of the Council of the European Union. Under these regulations, the product
shall not be discarded into regular garbage at the end of its life, but shall be returned to authorized
recycling stations.
Unpacking
Please check that the box contains the following items:
Main parts: 1 pc. IMM2320 main unit
1 pc. Mains cable
1 pc. FM antenna adapter
1 pc. IR remote control
1 pc. Operation manual
If any part is missing, please contact your dealer immediately.
Warning
After unpacking, and before plugging the AC cord in the wall outlet, check whether the
AC mains voltage and frequency is compatible with this product (see rear panel of
product). Whenever the specified voltage or your AC plug should not match the local
conditions, do NOT plug the AC cord into the wall outlet and contact your dealer in
order to change the AC supply voltage settings pursuant below instructions.
Description
The IMM2320 is a combination of a basic audio mixer for stereo music sources and two micro-
phones with a media player including FM tuner and IR remote control. It perfectly serves applications
where foreground or background music is mixed with vocal announcements, as it frequently occurs
in fitness and hospitality applications. Specifically in fitness music applications, the IR remote control
and the automatic music level reduction when the microphone is spoken into, greatly facilitate
efficient instructor work. Adding external music mute and emergency signal priority inputs, the
IMM2320 integrates seamlessly with the fire evacuation requirements of publicly used venues.
Maintenance and warranty
While we have chosen the best components to make this product as rugged and reliable as possible,
some parts in audio products (potentiometers, faders, switches) are subject to wear which is a
matter of operation cycles, and not of time. While providing a full time-based warranty according to
the country’s of purchase requirements on the function of the electronic circuitry, we hence have to
limit the warranty on such electro-mechanical parts to 90 days from the date of purchase.
Kindly note that any warranty is void if the unit has been modified ar attempted to be reparied by inap-
propriate means or a non-qualified service center.
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
PAGE 3
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
Internal Settings
Microphone emergency setting
In the case of an external emergency signal muting the unit’s outputs, an internal jumper can be set
to either mute the connected microphones (”off”) as well or to to keep them active (so that aside of a
emergency message broadcasted, additional instructions can be given by a local microphone - “on”).
To make the setting, locate and set the jumper on the front PCB as shown below.
WARNING - DANGER
Changing the internal settings requires to open the unit. Prior to opening the unit, the
unit shall be disconnected from any AC supply. Any work on an open unit shall be expe-
dited only by qualified, certified personnel.
EMERGENCY MIC JUMPER:
OFF (DEFAULT)
ON
AC mains voltage setting
AC Voltage
Selector Switch
If the AC mains voltage of your
power outlet and the setting of the
AC supply voltage on your unit do
not match, contact your dealer,
contractor or a qualified service
workshop to change the setting of
the AC voltage selector. The AC
voltage selector switch is located on
the side panel of the unit, close to
the AC inlet.
WARNING - RISK OF FIRE
Changing the AC supply voltage setting can result in a fire hazard if the settings are
made incorrectly. Any change of AC supply voltage setting shall be expedited only by
qualified, certified personnel.
PAGE 4
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
Controls and Connections
Rear: Input & Record Section
Rear: Output Section
1516
114
8
6
12
410
23
9
7
11
5
13
21 22
20
18
19
17
2923
24
25 27 28
26 30 31
32
33 34
35 36 37
38
Front: Input Section
Front: Output Section
Media Player
Instructions:
Please see below
PAGE 5
51 53
52
Controls - Front (Media Player | Tuner)
54
55
56
57
58 59 60 61
62
63
64
65
66
Display - Elements Remote Control - Elements
45 44
50
48
39 40
4349 47
41 42
46
40
Functional Description
The IMM2320 is a combination of a compact audio mixer with two microphone inputs and three
stereo sources and a media player with FM tuner and jingle player. Packed in a sleek 19’’|1U case and
fitted with an infrared remote control for the media player functions, this unit is a perfect centre piece
for commercial sound systems in hospitality and fitness audio applications.
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
2
1
3
AC inlet and fuse holder. Use the supplied AC cord to connect the unit to AC mains. Make sure
voltage and frequency stated and set on the unit comply with your local AC supply. The fuse
can be accessed by the small drawer at the AC inlet. To change the fuse, unplug the AC cord
first, pull out the fuse drawer and replace the fuse ONLY with a fuse of SAME voltage and
rating. If the fuse blows again after replacement, hand over the unit to qualified service person-
nel.
First stereo main output. This is a balanced stereo ¼’’ TRS output carrying the main output
signal controlled by (32).
First stereo main output. This is an unbalanced RCA output carrying the same signal as output
(2).
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USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
4
9
10
7
8
6
11
5
First stereo main output. This is a balanced terminal block output carrying the same signal as
output (2)
Maximum level setting for first stereo main output. This control allows to limit the maximum
level at the outputs (2)/(3)/(4) in order to match the connected sound system. Adjustments
made on this control will not be displayed by the output level meter (34). Adjustments shall be
made with a small screw driver. Note that the total angle is 300 degrees; do not apply exces-
sive force with the screw driver.
Talkover adjustment. This control allows to set the level at which the talkover is enabled. The
amount of damping which is applied once the talkover is active (DPG) is set by a front panel
control (26). Adjustments shall be made with a small screw driver. Note that the total angle is
300 degrees; do not apply excessive force with the screw driver.
Second stereo main output. This is a balanced stereo ¼’’ TRS output carrying the main output
signal controlled by (35).
Second stereo main output. This is an unbalanced RCA output carrying the same signal as
output (7).
Second stereo main output. This is a balanced terminal block output carrying the same signal
as output (7)
Mono switch for second stereo main output. Allows to sum the two stereo signal (L&R) to one
mono signal, which is present at both the L&R outputs of connectors 7, 8 and 9.
High Pass Filter (100Hz) for second stereo main output. Pressing this switch will engage a
100Hz HighPass filter, thus removing low frequencies from the seond stereo main output
signal. This can be useful if the second stereo main output feeds a system with limited low
frequency response, like small-size background music speakers or ceiling speakers.
Maximum level setting for second stereo main output. This control allows to limit the maxi-
mum level at the outputs (7)/(8)/(9) in order to match the connected sound system. Adjust-
ments shall be made with a small screw driver. Note that the total angle is 300 degrees; do
not apply excessive force with the screw driver.
Tone control for second stereo main output. This control shifts the frequency response from
a “darker” to “brighter” characteristic to adapt to the connected speaker system. Adjust-
ments shall be made with a small screw driver. Note that the total angle is 300 degrees; do
not apply excessive force with the screw driver.
Music Mute input. This is a terminal block input which allows to remotely mute all output
signals (first & second stereo main outputs) by simply shortening the contacts.
Emergency input. This is an auto-sensing, balanced terminal block input which allows the
connection to an emergency evacuation system. Once a signal is present on this input, all
output signals (first & second stereo main outputs) will be muted and the emergency
message/signal from this input will become audible instead. Please note that the unit can be
set to include or exclude the microphone signals from this muting process, please see section
“microphone emergency setting”.
Emergency volume control. This control allows to set the level with which the signal fed into the
emergency input (15) will be replayed at the two master outputs (2)/(3)/(4) and (7)/(8)/(9).
12
13
14
15
16
PAGE 7
Record output. This is an unbalanced stereo output carrying the same signal as the main
output, but not influenced by the main volume controls (32, 35). This is normally used for
recording the output to an external tape, CD or memory device.
Music channel 1 & 2 inputs. These RCA connectors provide inputs for line-level signals to the
assigned channels. The input sensitivity can be adjusted by means of the controls (19).
Gain control for music input channels (18). This allows the sensitivity (input gain) for every line
input to be adjusted, so that sources of different output level can be mixed at properly
balanced levels.
Microphone input for MIC1. This is a balanced ¼” TRS connector, without phantom power
provision, hence only suitable for dynamic microphones.
Microphone input for MIC2. This is a balanced ¼” TRS connector, without phantom power
provision, hence only suitable for dynamic microphones.
Aerial socket. Plug in a suitable FM antenna here, or connect any suitable antenna cable of the
house installation here (75 Ohms cable). Depending on whether the antenna connector is
male or female, the included adaptor may be required.
Level controls for microphone inputs. Allow the individual adjustments of the levels for MIC1
and MIC2, which relate to the rear side inputs (20) and (21) accordingly.
Microphone ON/OFF switches for MIC1 and MIC2. Enables/Disables the MIC1 and MIC2
signals respectively.
Microphone Equalizer. Allows the adjustment of the tonal balance for the microphone inputs in
two voice-specific frequency bands with an adjustment range of ±12dB. Please note the
setting will affect both microphone inputs simultaneously.
Talkover Damping Control. This control determines the amount of damping applied to the
program signal when a microphone is spoken into. Being fully turned clockwise, once speaking
into the microphone, the program signal is completely suppressed. Being turned fully counter-
clockwise, the talkover function is off. Any position in between allows seamless adjustment of
the amount of damping applied to the program signal. The threshold level from which on this
function is enabled can be set by the rear panel sensitivity level control (6).
AUX Input for music channel 1. This is a 3.5mm Mini-TRS stereo socket which allows to
connect sources like MP3 players etc. without removing the this unit from its mounting posi-
tion. Once a plug is inserted, the rear panel inputs for music channel 1 are disabled and the
connected source is active.
Level control of music channel 1 & 2. Allows adjustment of the respective channel level.
Level control of media player/tuner. Allows the level adjustment of the internal sources.
PFL switch for input channels. Assigns the respective channel to the headphone bus for
pre-fader-listening (PFL) by means of the headphone output (37). A LED indicates the pressed
position.
Peak LED. This LED will illuminate when an input signal with more than 0dB of signal level is
present. This facilitates to set the rear-panel gain controls (19) correctly for proper gain
balance.
25
20
18
19
17
21
22
23
24
28
27
26
29
31
30
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
First stereo main output volume control. Allows to set the overall level of the first stereo main
output
(2)/(3)/(4)
, while the level balance of the individual sources can be adjusted via
controls (23), (28) and (29).
First stereo main output equalizer. Allows the adjustment of the tonal balance for the first
stereo main output signal in two music-specific frequency bands with an adjustment range of
±12dB. The second stereo main output signal is unaffected by these controls.
First stereo main output level meter. Displays the output level of the first stereo main output
(2)/(3)/(4). Note that the level limitation applied by means of the rear-side maximum level
control (5) is not displayed on this meter.
Second stereo main output volume control. Allows to set the overall level of the second stereo
main output
(7)/(8)/(9)
, while the level balance of the individual sources can be adjusted via
controls (23), (28) and (29).
PFL level. Determines the signal volume at the headphone output (37). Always set this control
to minimum before putting on headphones, as sudden high-volume impact may damage your
ears. See further health advice below. The signal itself consists of the input signals assigned
via switches (3) to the PFL output, irrespective of the relative signal being present on the main
stereo outputs. This allows to prelisten an input signal while a different signal plays through the
outputs.
Headphones output. A ¼” TRS connector to connect a headphone. Turn the PFL level (36)
down before plugging in any headphones.
Power switch. Switches the unit on and off. Make sure you switch the unit off when not in use.
USB memory socket. Insert a FAT32-formatted USB memory stick of max 16GB with a one-
level folder structure for replay of MP3 files here. Note that this socket does NOT support USB
hard drives, neither for memory size nor for power requirements.
Media player display. Shows track/folder information, time information, play status, replay
mode settings and play sequence settings. Details are described under items (51...61)
Data dial. Depending on the chosen source (FM or Media - via control 48), this control has
different functionality:
In Media Play mode (Indicator 58 off) | Turn: choose a song/folder, Press: activate the choice.
In FM Mode: (Indicator 58 on) Press: choose between frequency scroll or station preset
scroll, Turn: choose frequency or station. The choice is immediately active.
Folder level (Store) button. Depending on the chosen source (FM or Media - via control 48),
this control has different functionality:
In Media Play mode (Indicator 58 off) | Press: go to folder level, then navigate by data dial (41)
In FM Mode: (Indicator 58 on) | Allows you to store a new station preset. Choose frequency
scroll mode by pressing (41) if required. Press the Folder Level (Store) button (42) once to
display the station preset you wish to store the frequency at. Choose the preset by turning
(41) and confirm by pressing the Folder level (Store) button (42) again, the station is now
stored at the chosen preset.
Media PLAY/PAUSE/STOP button. Press briefly to toggle between PLAY (backlight continu-
ously lit) and PAUSE (backlight flashing) mode. Press for longer than 2 seconds to change into
STOP status (backlight off). Restart by pressing the button again, this will commence replay
from the last known position when having been in PAUSE mode or from the start of the chosen
track when being in STOP mode. This control is inactive in FM mode. The selected status is
displayed in the display (61)
PAGE 8
33
32
34
35
36
37
38
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
42
40
41
39
43
PAGE 9
Play sequence selector (this control is inactive in FM mode). Selects between:
Straight play sequence: The next song is determined by alphanumerical sorting. The left
sequence mode indicator is lit in the display (59).
Random play sequence: The next song is determined by random choice. The right sequence
mode indicator is lit in the display (59).
Play mode selector. Selects between
SPL = Single Play. The player stops after playing the current song once. The next song is manu-
ally chosen by (41) and determined by the chosen play sequence.
SLO = Single Loop. The player loops the current song endlessly. The next song is manually
chosen by (41) and is determined by the chosen play sequence.
ACO = All Continuous. The player continues after the playing the current song. The next song
is determined by the chosen sequence. The player stops after the sequence is executed once.
ALO = All Loop. The player continues after the playing the current song. The next song is deter-
mined by the chosen sequence. The player repeats the sequence endlessly.
Those chosen play mode is displayed in the display (60). This control is inactive in FM mode.
Time Display selector. Selects between elapsed/remaining time display. The time display
choice is shown in the display (52) and is always related to track currently playing. This control
is inactive in FM mode.
IR Receiver sensor. If using the included IR remote control, make sure an unobstructed line of
sight is available between the remote control and the IR receiver sensor.
SOURCE button. Toggles the program source between Media play and FM Tuner. If FM Tuner
is chosen as the program source, the display’s FM Mode indicator (58) is lit while the media
replay related indicators (59/60/61) are disabled. Further the media replay related user
interface elements (44/45/46) are disabled and the functional assignment of the navigation
controls (41/42) is changed.
JINGLE buttons. Provided that the inserted media contains a folder named “Jingles” in its root
directory, and that the files in this folder follow certain naming conventions, up to 3 of these
files can be activated by the buttons (49). When a jingle is activated, the current program is
muted and the jingle is played instead; however, the program progresses in the background.
Jingles can be played both in Media play mode and FM mode. A further scheduled jingle play
mode is available by pressing the J1 (jingle 1) button for longer than 2 seconds, the LED (50)
will indicate that the scheduled jingle play mode is active. To de-activate the scheduled jingle
pay mode, press the J1 button again for more than 2 seconds. For more details, please see
the “Jingle player” chapter.
Scheduled Jingle Play Mode Indicator. This LED is lit when the scheduled jingle play mode has
been activated by pressing the J1 button for longer then 2 seconds
Display Elements
44
45
46
47
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
48
49
50
Time Display. Depending on the chosen source (FM or Media - via control 48), this part of the
display shows different content:
In Media Play mode (Indicator 58 off): Either the remaining or elapsed time are displayed in a
hh:mm:ss format, depending on the setting made by (46).
In FM Mode: (Indicator 58 on): If the unit works in station scroll mode, the currently chosen
station preset number is displayed. If the unit works in frequency scroll mode, this part of the
display remains unused (blank).
Time Mode Display (Elapsed): In Media play mode, this part of the display indicates that the
elapsed time of the current track is shown in the time display (51). The setting can be altered
by (46). This part of the display remains unused in FM mode.
52
51
PAGE 10
56
55
Time Mode Display (Remaining): In Media play mode, this part of the display indicates that the
remaining time of the current track is shown in the time display (51). The setting can be
altered by (46). This part of the display remains unused in FM mode.
Numeric data display. This part of the display is not used in this product. This is NOT a malfunc-
tion.
8-Digit Clear Text Readout.
Depending on the chosen source (FM or Media - via control 48),
this part of the display shows different content:
In Media Play mode (Indicator 58 off): The file name of the currently playing track is shown,
with its first 30 digits scrolling through the display. Letters exceeding 30 digits will be
discarded. Note that this is NOT an ID3 tag readout, but a file name readout, so files must be
named properly to yield a sensible displayed content. The display will show the file name and
alternate with the folder name the current file is located in. Whether at a specific time the file
or the folder name is displayed, is indicated by the respective symbols (56/57)
In FM Mode: (Indicator 58 on): The RDS station name (PS section of the RDS signal) is
displayed if the received FM signal contains this information. If no RDS station name is avail-
able, the currently tuned frequency is displayed. Note that this unit only displays the station
name of the RDS signal, no other potentially contained RDS content.
Folder Name Display Indicator. In Media play mode, this indicator shows that the current
content of the Clear text readout (55) is a folder name. This indicator is not used in FM mode.
File Name Display Indicator. In Media play mode, this indicator shows the current content of
the Clear text readout (55) is a file name. This indicator is not used in FM mode.
Source Mode Indicator. Shows whether unit is in Media play mode (indicator off) or FM mode
(indicator on). The mode can be changed via the control (48).
Play Sequence Indicator. In Media play mode, this indicator shows whether the unit is set to
straight sequential or random play sequence. The setting can be altered by control (44). This
indicator is not used in FM mode.
Play Mode Indicator. Based on the selection made by control (45), this part of the display
shows the letters “SPL”, “SLO”, “ACO” or ALO“. This indicator is not used in FM mode.
Transport status indicators. In Media play mode, 3 standard symbols indicate whether the unit
is in PLAY, PAUSE or STOP status. The 1st (outmost left) indicator is not used in this product;
this is NOT a malfunction.
53
54
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
59
58
57
61
60
63
62
Transport Controls. In Media play mode, the 4 transport control buttons allow you to start and
pause a track, and further skip to the next track or back to the beginning of the current track.
These controls are inactive in FM mode.
Source button. Toggles the program source between Media play and FM Tuner. If FM Tuner is
chosen as the program source, the display’s FM Mode indicator (58) is lit while the media
replay related indicators (59/60/61) are disabled. Further, the media replay related user
interface elements (44/45/46) are disabled and the functional assignment of the navigation
controls (41/42) is changed.
Remote Control Elements
This unit includes an IR (infrared) remote control. For proper operation, a line of sight between the
remote control and the sensor on the unit (47) is required. The IR remote does only control the basic
functions of the media player section and as such adds convenience to the operation, but does not
replace the front panel control on the unit itself.
Jingle Player
This unit contains a Jingle player with a one-shot mode for teasers and a scheduled mode for com-
mercial purposes (like playing advertisements in a certain sequence). To make use of the feature, the
user must create a folder named “Jingles” on the solid state memory media. The folder must have
exactly this name (with capital J and lower case following letters) and will not be available for choice
during normal replay.
The jingle files stored in this folder have to be prepared with specific names as well, and have to follow
the structure jx_yy with x from 1...3 and yy from 00 to 99. In this format, x defines the jingle number
(with a maximum of 3 jingles allowed) and yy being the number of minutes of background music the
jingle is followed by in scheduled jingle play mode. As an example, three jingles could be named
j1_01.mp3, j2_04.mp3 and J3_05.mp3. These three jingles will then be available for direct one-shot
play on pressing the jingle buttons (49), with each jingle assigned to the relative button.
64
65
66
Mute button. Toggles between muted and un-muted output of the media player.
Volume control (up/down). Allows you to set the required audio volume of the media player.
FM preset station buttons. Allows to remotely activate the stored FM station presets. These
buttons only work in FM mode and are disabled in Media play mode. Note that manual tuning
via the IR remote control is not possible.
PAGE 11
Notes on files, folders and data conventions
The media player section build into this unit is a hardware player and as such subject to various
restrictions, which are useful to be aware of:
Media Memory types. The player only works with SD cards and USB sticks up to 16GB of size
which are formatted in FAT32 file system and contain a maximum of 2000 files. The player does
NOT support larger memory sizes, external hard disks or any media with NTFS formatting.
Media File types. The player’s replay ability from solid state memory media is limited to MP3 files
in MPEG 1 Layer 3, MPEG 2 Layer 3, MPEG 2.5 Layer 3 standard, with sample rates of
128/160/192/224/256/320 kbps + VBR. Any other files existing on the solid state memory
media will be ignored and are not available for replay.
File/Folder Structure. The player only allows a two-layer folder structure on the solid state media
memory, meaning a root layer and a folder layer, but not any cascaded folder-in-folder structures.
Such subfolders will be ignored and their content is not available for replay. Playable files located in
the root layer are displayed in a folder named “ROOT” although this folder does not physically exist
on the solid state memory media.
Folder Sorting. Folders are displayed in the sequence of their creation dates on the solid state
memory media. If a specific sequence is needed, then the folder shall be created in this sequence
on the memory media before copying any MP3 files into them.
File Sorting. Files are sorted alphanumerically, but due to file system limitations, the sorting is
limited to the first 8 digits. This may in some cases - where the first 8 digits are identical - lead to
a random-looking, not alphabetical sorting sequence of files.
File system cache. In order to allow relatively quick access to the file directory during navigation,
the player loads a copy of the file directory into its own memory upon insertion of the solid state
memory media. This loading process requires some time, during which the display shows a count-
down. The time required is about 4 seconds per 100 tracks with a maximum of 2000 tracks
(meaning Max. 80 seconds loading time).
Displayed File/Folder names. MP3 files are displayed with the first 30 digits of their file names in
a scrolling manner; digits exceeding the first 30 will be ignored. Note that the display data is the
file name and NOT the ID3 tag of the file. Folders are displayed with the first 10 digits of their
names, any exceeding digits will be ignored.
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
PAGE 12
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
A scheduled jingle play mode can be activated by pressing the J1 button for longer than 2 seconds,
allowing the jingles to be inserted into the program in an automatic sequence with a certain duration
of background music in between. The jingle replay would in the above example start immediately with
Jingle 1 followed by 1 minute of background music, then Jingle 2 followed by 4 minutes of background
music, then jingle 3 followed by 5 minutes of background music; after this, the sequence would loop.
If less jingles are stored in the Jingles folder, the loop runs after the last available jingle. As another
example, if only one jingle named j1_02 is stored in the Jingles folder, then this would mean the jingle
would play every 2 minutes in scheduled jingle pay mode.
Operation
A. Connections
For connecting this unit to AC mains, please follow the instruction given in the “unpacking” section.
For making audio signal connections, always remember that good and reliable connections are a
basic requirement for good sound and reliable operation. Bad soldering of cables can result in inter-
mittent audio signals or temporarily lost ground connections, hence always use good cables. In case
of doubt about making proper connections, please see check the standard pin assignments required
for proper operation in the following section of this manual.
B. Powering up
Following a proper power-up sequence protects your equipment – specifically speakers – and your
ears. Follow the below procedure:
Turn down all output volume controls of any equipment in your audio system.
Switch on your audio sources first (Tuners, CD Players, PC’s with soundcards, Tapedecks, etc.)
Switch on this unit, then any connected a,plifier
Turn up the audio level on your sources if such controls are provided.
Set the first and seconf stereo main volume controls of this unit to a low level.
Make adjustments to all volume settings as needed.
For switching off, follow the inverse sequence.
C. Use
Apart from using good equipment, good sound comes from using it correctly. Level setting mistakes
are one of the common reasons why even good equipment may not perform as desired. For setting
levels, please be reminded that two guidelines need to be followed:
Avoid distortion by leaving some headroom. Never overrun any audio-equipment’s inputs. Level
meters and displays allow you to make sure that signals do not enter critical levels.
Avoid unnecessary amplification by using as little attenuation as possible. For example, if you turn
down the input gain of a mixer to minimum, and then increase the main output of the mixer to maxi
mum to drive your amplifier properly, you will create unnecessary noise, as you first dispose of some
already existing signal level, and then later apply amplification (tainted with noise) to make it up.
Obviously, these two requirements are marking a levelling window that the operator must match to
achieve a good sound with as little distortion and noise as possible.
WARNING - HEALTH RISK
Excessive volume levels on headphones or other sound systems may cause hearing
damage. Always turn the volume control to minimum when you switch the unit on, and
avoid prolonged exposure to sound pressure levels exceeding 90dB.
PAGE 13
D. Practical use of the Media Player / FM Tuner
To get familiar with the media player / FM tuner part of this unit, prepare a solid state media of 16GB
or less memory size, formatted in FAT32, and loaded with the following content:
A Number of folders which are generated on the media in the sequence they are supposed to be
listed on the unit later, with folder names not longer than 10 digits
MP3 files stored in each folder with file names possibly not longer than 30 digits and sufficient dif-
ferences in the first 8 digits if concise sorting is required.
A specific folder named “Jingles” with up to three jingle files inside, named “j1_01.mp3”,
“j2_02.mp3” and “j3_03.mp3”.
Put the unit into operation by powering it up via the power switch (38), and set the media playewr
volume to a suitable level (29). Turn the first and second stereo main outputs to a low output volume
(controls 32 and 35 - these can be adjusted later to the desired volume). Choose the desired opera-
tion mode for the media player/tuner (FM or Media play) via the button (48). If you select Media play,
the unit will show “No Media”. Insert the prepared solid state media, and the unit will show “READ” and
count down while loading the file directory structure. Once done, the available folders will be shown for
selection. Select the desired folder via the dial (41) and confirm by pressing the dial; the unit will now
show the MP3 files available in the chosen folder. Scroll with the dial (41) and confirm by pressing the
dial and the chosen MP3 track will start to play. Replay can be paused or stopped via the button (43),
and the play mode and play sequence can be set by the buttons (44/45). The time display can be set
to remaining or elapsed via button (46). You can choose the next song according to the selected play
sequence by the dial (41), simply turn for scrolling and press for confirmation. To change the folder,
press the folder level button (42) and the unit will show the folder directory; turn the dial (41) to scroll
for choices and press the dial to choose a new folder. Inside the folder, the track selection follows the
above description.
To change to FM mode, press the source selection button (48). The unit will change to FM reception
and you will show either the current tuning frequency or the current station preset. To change
between station preset display and tuning frequency display, press the dial (41) once. Turning the dial
then either tunes to a new frequency or changes the station preset in a sequential manner. Store a
new station preset by selecting the tuning frequency display via pressing (41), then tune to the
frequency to be stored, then press the FolderLevel/Store button (42) and select the preset number
to be stored by scrolling with the dial (41). Press the FolderLevel/Store button (42) again to confirm
storage. The newly stored preset is now available. Note that the FM tuner will show the station name
instead of a frequency if the station broadcasts a RDS PS data set; only PS (station name) data will be
displayed, all other RDS data will be ignored.
To insert a jingle on-the -spot into the running program material (regardless of whether Media play or
FM mode), simply press one of the three Jingle buttons and the corresponding jingle in the JINGLES
folder will be played immediately and once, while the program progresses in the background. To
activate scheduled jingle replay, press the J1 (jingle 1) button longer than 2 seconds, until the LED
(50) is lit. The jingles will now be played in a 1-2-3 sequence and then loop, with every jingle being
followed by a number of minutes of background music as determined by the jingle files’ name (stated
in minutes xx in the jingle files _xx file name section). If less than 3 jingles are stored in the JINGLES
folder on the solid state memory media, the loop is expedited after the last available jingle. If you want
to leave scheduled jingle replay, press the J1 button again for more than 2 seconds.
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
Technical Specifications
Signal/Noise............................................. 82dB (Line)
Crosstalk Damping.................................... 65dB (Line)
THD...................................................... 0.05% (Line)
Frequency response.................................20Hz – 20 kHz
AC IN (EU version)..........................AC220-250V~ 50Hz
AC IN (US version)..........................AC110-120V~ 60Hz
Power consumption.......................................max. 18W
Dimensions....................W483(427)xH44.5xD183.5mm
(parentheses = without rack ears)
Weight................................................................2.2kg
PAGE 14
Connections
This unit uses the below connector types, for which the pin assignment must comply with the following
specification. Balanced connections are to be preferred over unbalanced connections where applica-
ble and feasible. Avoid unbalanced connections exceeding 2m of cable length.
1-conductor shielded cable
(for unbalanced connections)
red
shield
2-conductor shielded cable
(for balanced connections)
red
shield
black
tip
sleeve
tip
sleeve
red = tip
shield = sleeve
red = tip
black = sleeve
shield = uncon.
tip
sleeve
ring tip
sleeve
ring
red = tip
shield = sleeve+ring
red = tip
black = ring
shield = sleeve
tip
sleeve
tip
sleeve
ring ring
red = tip
shield = sleeve+ring
red = tip
black = ring
shield = sleeve
tip
sleeve
tip
sleeve
red = tip
shield = sleeve
red = tip
black = sleeve
shield = uncon.
6.35mm TRS-stereo
6.35mm TRS-mono
3.5mm TRS-stereo
RCA
CABLE Types
Structure Balanced
connection
Unbalanced
connection
Block Diagram
L
R
CH1 LINE
RCA JACK
AMP
CH1 LEVEL
CH1 LEVEL
CH1 AUX
3.5MM TRS JACK
AMP
CH1 GAIN
AMP
CH1 GAIN
AMP
CH1 CUE SW
-30dB
AMP
L
R
CH2 LINE
RCA JACK
AMP
CH2 LEVEL
CH2 LEVEL
AMP
CH2 GAIN
AMP
CH2 GAIN
AMP
CH2 CUE SW
-30dB
AMP
FM ANTENNA
AMP
CH3 LEVEL
CH3 LEVEL AMP
CH3 CUE SW
-30dB
AMP
MP3 L
R
MIC 1 INPUT
6.3MM TRS JACK
MIC 2 INPUT
6.3MM TRS JACK
CUE-L BUS
CUE-R BUS
+
-AMP
+
-AMP
AMP
MIC 1 GAIN
AMP
MIC 2 GAIN
MIC 1 ON SW
MIC 2 ON SW
AMP
T/O THRESHOLD
MIX-L BUS
MIX-R BUS
AMP
HI LOW
MIC EQ
AMP
AMP
L
R
H/P OUTPUT
RCA JACK
CUE LEVEL
CUE LEVEL
T/O DAMPING
T/O DAMPING
HI LOW
MAS1 EQ
L
R
RECORD OUTPUT
RCA JACK
AMP
AMP
AMP
AMP
L
R
MAS2 UNBAL
RCA JACK
MAS2 BAL-L
6.3MM TRS JACK
MAS2 BAL-R
6.3MM TRS JACK
1 G
2 -
3 +
4 -
5 +
MAS2 BAL
SCREW TERMINAL
L
R
MAS2 UNBAL
RCA JACK
MAS2 BAL-L
6.3MM TRS JACK
MAS2 BAL-R
6.3MM TRS JACK
1 G
2 -
3 +
4 -
5 +
MAS2 BAL
SCREW TERMINAL
AMP
AMP
MAS1 LEVEL
MAS1 LEVEL
LED METER
MAX LEVEL
MAX LEVEL
AMP
AMP
AMP
AMP
AMP
AMP
AMP
MAS2 LEVEL
MAS2 LEVEL
MAX LEVEL
MAX LEVEL
AMP
AMP
AMP
AMP
100 Hz
MONO SW
HI LOW
MAS2 EQ
3 +
2 -
1 G
EMERGENCY INPUT
SCREW TERMINAL
2 +
1 G
OUTPUT MUTE
SCREW TERMINAL
+
-AMP
EMERGENCY LEVEL
AMP
AMP
AMP
AMP
AMP
MUTE
EMERGENCY
DC DETECTOR
AMP
AMP
1
2
3
MUSIC
MUTE
DC DETECTOR
AMP
AMP
+VCC
connect pin1,2 emergency with mic
connect pin2,3 emergency without mic
USER MANUAL - IMM2320 INSTALLATION MEDIA MIXER
www.hill-audio.com
Hill Audio products are developed, manufactured and distributed by
Adelto Technologies
Vanguard Way, Shoeburyness, Essex SS3 9QY, UK
www.adelto.com | [email protected]
EC Declaration of Conformity
Manufacturer: Adelto Technologies Limited
Address: Vanguard Way, Shoeburyness, Essex SS3 9QY, UK
We declare on our own responsibility, that the equipment
Hill Audio IMM2320
is in conformity with the following directives and standards or regulations:
EMC Directive 2004/108/EC
EN55103-1:2009 (Emissions)
EN55103-2:2009 (Immunity)
EN61000-3-2:2006 + A1:2009 + A2:2009
EN61000-3-3:2008
LVD Directive 2006/95/EC
EN60065:2002 A1:2006 + A11:2008 + A2:2010
ROHS Directive 2002/95/EC
and is marked as follows:
Shoeburyness, 16. May 2014
Authorized SignaturePlace and date of issuing
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