Hill Audio VMA-1120 Manuale utente

Categoria
Attrezzatura musicale
Tipo
Manuale utente
RevB 06-2017
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 - VMA1120 INSTALLATION MIXING AMPLIFIER
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 2011/65/EU 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. VMA-1120 main unit
1 pc. Mains cable
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
immediately.
Description
The VMA-1120 is a combination of a basic mixer for music and three microphones, a media player,
and a mono constant voltage power amplifier for installed sound systems. This comprehensive combi-
nation of basic features makes the VMA-1120 the ideal all-in-one solution for small to medium sized
installed sound systems in commercial environments.
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
PAGE 3
Configuration setup
Before using the VMA-1120, it must be configured to match the application. Make sure the unit is
unplugged from AC mains and remove the top cover to gain access to the internal elements, then set
switches and jumpers and arrange connctions as per following instruction.
JP102/104/106: These jumpers enable or disable a +12V DC phantom power supply to the micro-
phone inputs (12), separately for every microphone. Factory default: disabled.
JP103/105/107: These jumpers enable or disable the microphone inputs to contribute to the
talkover (priority) trigger, separately for every microphone. Factory default: enabled.
J1: This jumper enables or disables a 75Hz HPF filter for transformer-output configurations to avoid
saturation. Factory default: disabled.
JP502/503: Determine whether the signal at the SL stereo link preamp output (8) is affected by the
emergency signal or not. Factory default: enabled.
Warning
The following chapter contains work on an open unit, with contacts, wires and parts
carrying life voltage exposed. Work must be expedited strictly and only when the unit is
disconnected (not only switched off) from the AC supply, and all work must be expe-
dited by a qualified technician familiar with necessary safety precautions. Removing the
top cover and expediting this work is not permitted for the end user, as indicated by the
outside marking “no user-serviceable parts inside - do not open”. Contact your dealer
to make these settings for you if you do not have the required qualification. The manu-
facturer takes no liability for damage to health or goods evolving from disobeyance of
these instructions.
Internal jumper settings
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
Rear PCB
J1: HPF
JP502:
JP503:
RECORD
JP103/5/7:
MIC TALKOVER
JP102/4/6:
MIC PP +12V
PAGE 4
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
Front PCB
JP302 - Mic Emergency.
This jumper decides whether
the internal mics remain active
when an emergency signal is
present at the emergency input.
Shown position = active (default)
Move jumper to de-activate
internal mics in emergency.
Low-Z or LINE (Transformer) output configuration
To convert the amplifier to high-voltage
line operation, the low impedance output
socket should be unplugged from CN5 on the
amplifier pcb (a short pair of heavy red and black
wires), and replaced by the spare plug connected to
the toroidal transformer nearer the rear of the unit
(same wire types). Note that the low-impedance output
will no longer be available once the transformer is plugged
in. The secondary (output side) of the transformer is perma-
nently wired to the line output connector (a 4-pin 5 mm-pitch
screw terminal type), thus the high-voltage output will be active once
the internal connector change has been made. In high-voltage line
operation, always use the safety cover fitted over the connector!
Amp PCB
CN5
CN9
CN7
1 2
3 4 6
5
Controls and Connections
Connections - Rear
7 8 9 11
10
1213 15 16
14
PAGE 5
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
Controls - Front
18
17
19 20
21
23
22 24 25 26 27 28
PAGE 6
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
29 3031 32 33 34 35 36 37
PAGE 7
Functional Description
The VMA-1120 is a combination of a triple-microphone & music mixer, a media player, and a mono
constant voltage power amplifier which can optionally be wired for low-impedance operation. Packed
in a rugged 19’’ | 2U case and fitted with forced fan cooling, it’s a comprehensive and reliable centre
piece for commercial sound systems in retail and hospitality.
2
1
3
4
9
10
7
8
6
5
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.
AC mains voltage switch. I
f 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. Such change requires the AC cord
to be unplugged, to loosen the screws in order to turn the safety cover, and to move the switch
slider to the desired position, which will be revealed by the embossed text on the slider. Leave
this work to qualified professionals only.
Output Mute connector. This is a terminal block input which allows to remotely mute all output
signals (Speakers, PreAmp) 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 (Main, Zone) will be muted and the emergency message/signal from this input
will become audible instead. Please note that the internal microphones may or may not be
included in this muting process , depending on the setting of Jumper J302 (see section “con-
figuration setup”) and may hence not be used while an emergency message is broadcasted.
Also note that the emergency input will have effect on the speaker output (14 or 15); whether
it also affects the Stereo Link (SL) preamp output (8) depends on the setting of jumpers J502
and J503 (see chapter “configuration settings”)
Emergency volume control. This control allows to set the level with which the signal fed into the
emergency input (4) will be replayed on the speakers (14 or 15) and the Stereo Link (SL)
preamp output (8).
Maximum Volume control for MAIN speaker output (14 or 15). Allows to limit the maximum
output volume which the user can set with the front-panel MAIN volume control (27).
Record output. This is an unbalanced stereo output carrying the same signal as the main
output, but not influenced by the main volume control (24). This is normally used for recording
the output to an external tape, CD or memory device.
Stereo Link (SL) preamp output. This is a pair of 1/4’’ TRS sockets which carries a balanced
line level signal. The signal is the same as the signal at the MAIN speaker output (14 or 15),
but on line level and unaffected by the MAIN volume controls (6 and 27).
Utility Input. This is a pair of RCA input jacks at line level, with the signal fed into this input being
independently controllable in its volume via the Utility volume control (23). This input is useful
for the external connection of chime players, message players or jukeboxes.
Line Inputs. These are 3 pairs of RCA input jacks, with one of the signals fed into these inputs
being selectable as the music source via the source selector (24) and then being controllable
in its volume via the music volume control (26). The input gain is adjustable via controls (11).
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
GAIN control for input channels. This allows the sensitivity (input gain) for every line input to be
adjusted, so that sources of different output level can be played at properly balanced levels.
Microphone inputs. This are balanced ¼” TRS connectors, which can be internally set to either
carry phantom power (+12V DC) or not, thus this input can be used both with condenser and
dynamic microphones (see chapter “setup configuration”, jumper JP102, JP104, JP106 -
default is phantom power = OFF).
GAIN control for microphone inputs. These controls allows the sensitivity (input gain) for the
input to be adjusted to the microphones in use.
Low impedance speaker output. This is a 2-pin 5 mm-pitch screw terminal connector. The
internal amplifier is able to deliver its rated power into a 4 ohm load, with the maximum output
power reduced with higher load impedances. When using multiple low-impedance loudspeak-
ers (normally 8 ohms) with a single amplifier, series and/or parallel wiring should be employed
to produce a total load impedance of not less than 4 ohms. Note that one of the output pins is
connected internally to 0 V. Note that this output can NOT be used at the same time as the
LINE level speaker output (15). To avoid simultaneous use, the unit has to be internally config-
ured for either Low impedance or Line level operation. As a factory default, this Low Imped-
ance output is active, and the Line level output (15) is disabled.
Line level (Constant Voltage / High impedance) output. This amplifier is fitted as standard with
an output transformer that can be enabled by moving an internal connector (see chapter
“setup configuration”). The transformer should be placed in circuit if the amplifier is to be used
with a 100 V, 70 V or 25 V line speaker distribution system. Once the output transformer is
enabled, make sure that the provided safety cover is fitted over the connector (15), which may
have been removed to connect the speaker cable. Note that the transformer secondary has
3 line outputs: 100 V, 70 V and 25 V; whilst these have a common 0 V connection, the output
is fully floating i.e. it is isolated from the rest of the amplifier. When the transformer is in use
the maximum total combined load should not exceed the rated power of the amplifier. Note
that this output can NOT be used at the same time as the Low impedance speaker output
(14). To avoid simultaneous use, the unit has to be internally configured for either Low imped-
ance or Line level operation. As a factory default, this Low Impedance output is active, and the
Line level output (15) is disabled. Once this Line level output (15) is enable, the Low impedance
output (14) will be disabled.
Fan cover. For extended reliability under full rated power, this amplifier has an internal cooling
fan. Make sure to not obstruct the fan vent, and also keep the fan inlet on the front panel clear.
Microphone volume controls. These rotary controls adjust the volume of the microphones
connected to the inputs (12).
Microphone On-Off switches. Enable the relative microphone when being pressed, and disable
the microphone when being released. A LED indicates enables status.
Microphone Equalizer. Allows the adjustment of the tonal balance for all three microphone
input together in two voice-specific frequency bands with an adjustment range of ±10dB.
TALKOVER On/Off switch. Engages or disengages the talkover function, which allows to
reduce the music level automatically when the microphone is spoken into (also called priority).
The amount of damping applied to the music signal is controlled by the damping control (21).
Talkover Damping Control. Provided the talkover on/off switch (20) is set to ON, this control
determines the amount of damping applied to the program signal when the microphone is
spoken into. Fully turned clockwise, maximum attenuation is applied, being turned fully
counter-clockwise, the damping is negligible.
PAGE 8
11
12
13
14
15
16
20
18
19
17
21
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
25
22
23
24
28
27
26
29
PAGE 9
Utility volume control. Controls the volume of the line level source connected to the rear-side
UTILITY input (9).
Utility On/Off switch. Enables (pressed) or disables(released) the Utility input. A LED indicates
the enabled status.
MUSIC source selector. This rotary 4-psotion switch allows to choose any of the 3 rear-side
Line inputs (10) to be the music source, or the internal media player. Additionally, a front-side
3.5mm TRS input (25) can be the source, which automatically replaces the Line3 signal if a
plug is plugged into the socket (25).
AUX (Line3) Front-side socket. This 3.5mm TRS jack has an auto-switching function which
replaces the rear-side Line3 input signal automatically once a jack is plugged into the socket.
This is mainly suitable for MP3 players, smartphones etc. Plug the source into this socket and
set the selector switch (24) to AUX | Line3.
MUSIC volume control. Controls the level of the source chosen via the MUSIC source selector
switch (24). Note that the microphone volume controls (18), the utility volume control (22) and
this MUSIC volume control are all summed before the overall volume is adjusted by the MAIN
volume control (27).
MAIN volume control. Allows to set the level of the MAIN output signal, which is composed of
the music signal selected by the MUSIC source selector switch and volume control (24 & 26),
the microphone signals determined by its relative controls, plus the Utility signal.
MAIN Equalizer. Allows the adjustment of the tonal balance for the MAIN output signal in two
music-specific frequency bands with an adjustment range of ±10dB.
MAIN level meter. Indicates the MAIN output level in 5 steps via relative LEDs. Note that the
meter only indicates the signal strength after the MAIN volume control (27), but does not
account for level reductions set by the rear side maximum volume control (6). If the level meter
indicates full volume but the output appears low, check the setting of the rear-side maximum
volume control (6) first.
Power switch. Switches the unit on and off. A LED indicates the status. Make sure you switch
the unit off when not in use.
30
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
The
media player accepts USB 1.0 and 2.0 media of up to 16GB and SD card media of up to 4GB.
File systems supported are FAT16 or FAT32. Note that compatibility may not only depend on the
memory size, but also specific brands of media. The manufacturer of this unit cannot test all available
brands; if any media brand does not work, change to another.
The player will replay audio files recorded in either WMA (32 kpbs to 384 kbps) or MP3 formats
(MPEG 1/2/2.5, layer 2 or 3 decoding at bit rates from 32 kpbs to 384 kpbs, including VBR; sample
rates of 8 kHz, 11.025 kHz, 12 kHz, 16 kHz, 22.05 kHz, 24 kHz, 32 kHz, 44.1 kHz and 48 kHz).
The files may be in the root directory of the memory, or in folders, or folders within folders. When the
memory device is plugged in, the media player will scan it and identify all compatible files in all folder
locations, and make them available for playing. Only one memory device at a time (USB device or SD
card) may be connected. Note that it is not possible to create a playlist.
Media Player
PAGE 10
USB memory socket. Insert a FAT-formatted USB memory stick of max 16GB with WMA or
MP3 files here. Note that only one of the two media sockets can be used at a time; either the
USB socket (31) or the SD socket (32). Note: this socket does NOT support USB hard drives,
both for memory size and power requirements.
SD card socket. Insert a FAT-formatted memory card of max 4GB with WMA or MP3 files
here. Note that only one of the two media sockets can be used at a time; either the USB socket
(31) or the SD socket (32).
PLAY/PAUSE button – starts or pauses playback of current track/file. Two LEDs indicate the
current status of operation: PLAY LED – illuminates in PLAY mode; PAUSE LED – illuminates
in PAUSE mode.
STOP button – stops playback.
PREVIOUS button – moves playback point to start of previous track or file.
NEXT button – moves playback point to start of next track or file.
MODE button – selects Random and Repeat Modes. The two status LEDs indicate: RANDOM
mode – illuminates when Random mode is selected; REPEAT mode – illuminates when Repeat
mode is selected. If Repeat Mode is enabled while a track is playing, the track will be repeated
when it has finished. This repetition will continue until Repeat Mode is cancelled. Repeat Mode
may also be selected from Stop Mode; the next track played when H is pressed will then repeat
until Repeat Mode is cancelled. Note that Repeat Mode only applies to individual tracks; it is
not possible to repeat a sequence of tracks. If neither RANDOM nor REPEAT are selected, the
player will be in Normal Mode, and will play through all the available audio files in order of
filename, regardless of which folder they are in on the memory device. Numeric characters
are given higher priority than alphabetic ones, so audio tracks whose filenames begin with
numbers will be played first. This makes it very simple to pre-ordain track playing order; if the
tracks are given filenames beginning “01”, “02”, etc., they will be always be played in that order
in Normal Mode.
33
31
32
34
35
36
37
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
PAGE 11
Operation
A. Connections
For connecting this unit to AC mains, please note:
Check whether the AC mains voltage and frequency is the same as this product is specified for (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 you dealer immediately.
Do not operate this unit without the line cord earth ground connected. To do so may increase the
risk of electric shock and increase line cord conducted emissions.
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, and set it to the desired audio source
Turn up the audio level on your sources if such controls are provided.
Set the MAIN and ZONE volume controls of this unit to a low level.
Make adjustments to all volume settings as needed.
For switching off, follow the inverse sequence – always switch off this unit first, then the connected
audio sources.
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.
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
PAGE 12
Connections
This unit uses the below connector types, for which the pin assignment must comply with the following
specification. Always make sure to use good connectors and cables to ensure proper operation.
Balanced connections are to be preferred over unbalanced connections where applicable and feasi-
ble. 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.
3
1
2plug
side 3
1
2
cable
side
red = 2
black = 3
shield = 1
red = 2
shield = 1+3
2
3
1
3
1
2
3
1
2
cable
side
plug
side
red = 2
black = 3
shield = 1
red = 2
shield = 1+3
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.
XLR male
XLR female
6.35mm TRS-stereo
6.35mm TRS-mono
3.5mm TRS-stereo
RCA
CABLE Types
Structure Balanced
connection
Unbalanced
connection
Terminal Plug
red = 1
black = 2
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
PAGE 13
Technical Specifications
Block Diagram
Power (RMS) .....1x120W@4 Ohms (LoZ) / @40Ohms (HiZ)
Signal/Noise................................................ 72dB (Line)
Crosstalk Damping....................................... 65dB (Line)
THD.......................................................... 0.05% (Line)
Frequency response (LoZ w/o HPF)...............20Hz – 20 kHz
AC IN (230V setting)..........................AC220-250V~ 50Hz
AC IN (115V setting)..........................AC110-120V~ 60Hz
Power consumption.........................................max. 295W
Dimensions............................W483.0×H88.0×D263.0mm
Weight.................................................................8.16 kg
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
T
R
J4
MIC1
T
R
J5
MIC2
T
R
J6
MIC3
+15V
PHANTOM
POWER
L
R
LINE1
L
R
LINE3
8
9
7
6
10
SWB
SOURCE SELECT
2
3
1
5
4
SWA
SOURCE SELECT
MP3
L
R
MODULE-MP3
+
+
+
+
+
+
+
+
HI LOW
HI LOW
-
-
-
L
R
REC OUTPUT
P MUTE
-
MIC 1 VOL
G
D S
G
D S
-
-
2 +
1 G
OUTPUT MUTE
+15V
PHANTOM
POWER
+
-
-
MIC 2 VOL
+
-
SGN LEVEL
EMERG
+
+
-
-
T
R
J4
SL OUTPUT
T
R
J4
SR OUTPUT
+15V
PHANTOM
POWER
MIC 3 VOL
DC DETEC TOR
SHORT MUTE
T/O
HARD MUTE
MUTE
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
AMP MODULE
MAIN EQ
MAIN EQ
MIC 1 ON
MIC 2 ON
MIC 3 ON
GAIN
GAIN
GAIN
GAIN
GAIN
GAIN
GAIN
GAIN
LIMITER
G
D S
G
D S
TALKOVER DPG
LINE1 L
LINE1 R
LINE2 L
LINE2 R
0dBu
0dBu0dBu
0dBu
0dBu
0dBu
0dBu
0dBu
0dBu
0dBu
0dBu
0dBu
0dBu
0dBu
-40dBu
+10dBu
0dBu~+40dBu
-40dBu
-40dBu
MUSIC VOL
+
-
-
GAIN
HI LOW
L
R
LINE2
L
R
UTILITY
0dBu
0dBu
+
+
0dBu
-
SGN LEVEL
MAIN VOL
G
D S
G
D S
-
-
MAX LEVEL
G
D S
G
D S
-
-
-
0dBu
MUTE
EMERGENCY
DC DETECTOR
3 +
2 -
1 G
EMERGENCY INPUT
+
-
0dBu
+6dBu
+6dBu
0dBu
0dBu
6dBu
6dBu
-6dBu
-6dBu
0dBu
0dBu
0dBu
0dBu
MIC:0dBu
MUSIC:0dBu
0dBu
0dBu
MUTE
MUTE
0dBu
0dBu
TALKOVER ON
+10dBu
+10dBu
0dBu~+40dBu
0dBu~+40dBu
P MUTE
-7.78dBu
-8dBu~+12dBu
-7.78dBu
-8dBu~+12dBu
-7.78dBu
-8dBu~+12d Bu
L2
4
5
R3
G1
6
7
AUX IN
LINE3:0dBu
AUX:+14dBu
0dBu
-
-
-
-
-
-
-
-
-6dBu
-
-
-
0dBu
+
+
1
2
3
+
75Hz
PAGE 14
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.
In many cases, malfunction of electro-mechanical parts occurs due to dust contamination, which may require cleaning of
such parts. As the inside of such parts is not accessible, a common practice is to use cleaning fluids in the shape of
sprays. Please be reminded that many of such fluids contain chemicals which may wash away the dust but at the same
time corrode or damage contact surface and may cause cosmetic damage to other parts. We hence explicitly exclude
any claims for exchange of damaged part due to mechanical or chemical impact.
USER MANUAL - VMA1120 INSTALLATION MIXING AMPLIFIER
EC Declaration of Conformity
We declare on our own responsibility, that the equipment
Hill Audio VMA-1120
is in conformity with the following directives and standards or regulations:
and is marked as follows:
Authorized SignaturePlace and date of issuing
Manufacturer: Adelto Technologies Limited
Address: Unit 2A Springfield Road, Springfield Industrial Estate
Burnham-on-Crouch, Essex CM08UA, England
Burnham-on-Crouch, 30.06.2017
www.hill-audio.com
Hill Audio products are developed, manufactured and distributed by
Adelto Technologies
Unit 2A Springfield Road, Springfield Industrial Estate, Burnham-on-Crouch, Essex CM08UA, England
www.adelto.com | [email protected]
EMC Directive 2014/30/EU
EN55032:2012 (Emissions)
EN55103-2:2009 (Immunity)
EN61000-3-2:2014
EN61000-3-3:2013
LVD Directive 2014/35/EU
EN60065:2014
ROHS2 Directive 2011/65/EU
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Hill Audio VMA-1120 Manuale utente

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Attrezzatura musicale
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Manuale utente

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