Hill Audio LMR-2442FX-C-USB Manuale utente
- Categoria
- Attrezzatura musicale
- Tipo
- Manuale utente
RevA 08-2015
PARAM
TAP
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 to 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 or longer periods of being
unused.
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 not authorized persons.
Take any precaution required by local law, applicable regulations or good business practice to avoid
injury of 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
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USER MANUAL - LMR2442FX-C-(U) Rackmixer
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, with the CE requirements eventually not to be met any more. The manufac-
turer 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. LMR2442FX-C-(U) main unit
1 pc. Mains cable
1 pc. Operation manual
2 pcs. Rack brackets
If any part is missing, please contact your dealer immediately for replacement.
Warning
After unpacking, and before plugging the AC cord in the wall outlet, 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 your
dealer immediately.
Description
The LMR2442FX-C-(U) is a versatile audio mixer for stage sound and recording purposes, which is
fitted with 8 studio-grade mono mic/line inputs, 4 stereo inputs and 4 subgroups for a well-
structured mixdown. All channels sport a full feature set with gain controls, EQs and 4 AUX busses.
The mono channels are further equipped with a one-knob compressors and semi-parametric mid-
band EQs. A sophisticated DSP effects processor with editable parameters and numerous
input/output options complete this unit, which as an option can also be fitted with a stereo USB audio
interface (version -U), thus making the LMR2442FX-C-(U) one of the most flexible mixers in its class.
USER MANUAL - LMR2442FX-C-(U) Rackmixer
PAGE 3
Controls and Connections
Top
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I H G F
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Connections
Rear
USER MANUAL - LMR2442FX-C-(U) Rackmixer
Functional Description
The LMR2442FX-C-(U) is a live sound/recording console with 8 mono and 4 stereo inputs. Each input
features gain control, EQ, 4 AUX busses and a stereo pan/balance control. The mono inputs further
sport a semi-parametric midband for their EQs and a one-knob compressor. Input channels can be
routed to any of the 4 subgroups or directly to the master. One of the AUX busses is routed to an
internal effects processor. Numerous in/output options facilitate the integration into any sound
system.
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2
1
3
4
9
7
8
6
5
Microphone Input. This is a balanced female XLR connector. Connect any
dynamic or condenser capsule microphone here. Condenser micro-
phones may require phantom power, which can be activated separately
via the rear panel switch (section Q). Do not connect a microphone to this
socket at the same time with a line source in socket (2)
Line Input. This is a balanced 6.35mm TRS connector. Connect any line
level source here. For sources which require a high impedance input (like
a guitar output), use a DI box inbetween the source and the mixer’s line
input. Do not connect a line source to this socket at the same time with a
microphone source in socket (1)
Insert Jack. This is an unbalanced 6.35mm TRS connector, with tip and
ring carrying the send and return signal of the insert path at line level
respectively. Use a Y TRS cable (insert cable) to insert an external signal
processor here.
Gain control. Adjusts the input gain to achieve the best signal/noise ratio.
Try to set the control in a way that the Level LED (5) shortly lights up at
level peaks of the signal. Specifically with line sources, pay attention to
whether the source has a volume control. It can be better to use a higher
source volume than too much gain at the mixer’s input stage.
Level Set LED. Illuminates once the internal level after the gain control
stage exceeds 0dB and helps to set the gain control correctly.
Compressor. Controls the threshold of the in-built compressor. The ratio
is fixed to about 2:1, the gain runs from 0….+9dB and the threshold from
+20….-5dB as the control is rotated clockwise. With the +20dB setting in
the total counterclockwise position, the compressors can be considered
“off” since if the gain control is set correctly, the signal will not exceed this
threshold. Once a signal exceed the threshold, the peaks exceeding the
threshold will be reduced to half while the gain is raised, giving the signal
more perceived volume while reducing its dynamics. The attack time is
fixed at approx. 25 msec, the release time is fixed at approx. 300 msec,
the characteristic is “hard knee”.
High Pass Filter. Pressing this switch engages a 75Hz high pass filter,
effectively suppressing AC hum or microphone rumble.
Hi EQ level control. This is a shelving filter with a corner frequency of
12kHz, thus allowing to boost or attenuate all frequencies above this point
by -15dB to +15dB.
Mid EQ level control. This is the level control of a semi-parametric mid
frequency equalizer. The frequency set by the frequency control (10) can
be boosted or attenuated by -15 to +15dB.
Mono Input Channel
2
1
3
4
7
6
5
A
9
10
8
11
12
15
14
13
16
20
18
19
17
USER MANUAL - LMR2442FX-C-(U) Rackmixer
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10
11
Mid EQ frequency control. Sets the center frequency of the semi-parametric mid frequency
equalizer between 100Hz and 8kHz.
Lo EQ level control. This is a shelving filter with a corner frequency of 80Hz, thus allowing to
boost or attenuate all frequencies below this point by -15dB to +15dB.
AUX controls. The AUX busses allow to generate independent mixes from the main mix, either
with the target to send different amounts of the channel signals to an internal or external
effects processor, or in order to create a mix different from the main mix for monitoring
purposes. Generally, since the part of a channel signal which runs through an effects proces-
sor shall be in a fixed ratio to that same channel signal, so-called “post fader” AUX busses are
used to feed effect processors, which means the eventual signal level sent into the BUS
depends on both the AUX level setting as well as on the channel’s fader position. For monitor-
ing purposes, it is generally desirable to create a completely independent mix from the main
signal, hence the signal level sent into the AUX bus shall not depend on the fader position of
the respective channel; this is called “pre-fader“. On this unit, the AUX1&2 busses (12) are
switchable between pre&post fader routing via the selector switch (13), while the AUX3&4
busses (14) have a fixed post-fader routing. AUX4 is connected to the internal effects proces-
sor.
PAN control. This control allows to position the channel signal in the stereo image. Turning the
control counterclockwise will move the signal more to the left output, turning it clockwise will
move the signal more to the right output. The center position sends the signal in equal shares
to the left and right output. Note that “left” and “right“ may be inversed if the channel is routed
to a subgroup and the subgroup is assigned to the main bus in an inverted manner.
PEAK Indicator. This indicator will flash if the signal level exceeds +6dB. To allow for distortion-
free operation, the user shall avoid the Peak indicators to flash more than occasionally.
MUTE function. Pressing this button will mute the respective channel. The LED above the
switch indicates once a channel is muted.
CHANNEL FADER. Controls the channel’s level in the overall mix.
ROUTING switches. These switches allow the channel signal to be either sent directly to the
main output (switch “LR”) or to the subgroups 1&2 or 3&4. Once 1&2 or 3&4 are selected,
the eventual distribution of the signal level between 1-2 or 3-4 will depend on the PAN control
(15). If for example 1&2 is selected, then turning the PAN control more counterclockwise will
send more signal to subgroup 1, turning clockwise more signal to subgroup 2.
SOLO function. The SOLO function allows to mute all channels on which SOLO is not selected,
in one go. This helps to “isolate” a specific channel to make adjustments to the level or EQ
settings. A LED indicator is lit when SOLO is active.
15
14
13
12
16
20
18
19
17
USER MANUAL - LMR2442FX-C-(U) Rackmixer
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25
21
22
23
24
26
4
Most controls and functions of the stereo channels are identi-
cal to the mono channels, with the exception of no compres-
sors provided and other differences outlined below. For any
not listed item, refer to the mono channel section.
Gain control. Like in the mono channels, this adjusts the input
gain to achieve the best signal/noise ratio. Try to set the
control in a way that the Level LED (5) shortly lights up at level
peaks of the signal. Specifically with line sources, pay attention
to whether the source has a volume control. It can be better
to use a higher source volume than too much gain at the
mixer’s input stage. As an exception, it has to be noted that for
stereo inputs 9-10 and 11-12, the gain control only works on
the microphone input (1), not on the line inputs (21). For
stereo inputs 13-14 and 15-16, the gain control works on the
line inputs (21).
Line Input. These are two balanced 6.35mm TRS connectors.
Connect any line level stereo source here.
USB Source selector (only channel 11-12). Pressing this
button will route the channel to the output of the internal USB
audio interface. Note that the input jacks (21) are disabled
when this button is pressed.
AUX Input and source selector (only channel 13-14 and
15-16). These channels have a 3.5mm stereo TRS
(unbalanced) input, suitable for the connection of e.g. MP3
players. This AUX input is activated by pressing the relative
button, in this case the channel’s stereo TRS inputs (21) are
disabled.
High-Mid EQ. This is a fixed frequency peaking EQ, with a
center frequency of 3 kHz.
Low-Mid EQ. This is a fixed frequency peaking EQ, with a center
frequency of 500 Hz.
BALANCE control. This control allows to position the channel
signal in the stereo image. Turning the control counterclock-
wise will balance the signal more to the left output, turning it
clockwise will balance the signal more to the right output. The
center position sends the left channel of the signal to the left
main output and the right channel of the signal to the right
main output. Note that “left” and “right“ may be inversed if the
channel is routed to a subgroup and the subgroup is assigned
to the main bus in an inverted manner.
Stereo Input Channels
1
4
7
5
8
11
12
14
13
16
20
18
19
17
B
C
21
22
23
25
24
26
USER MANUAL - LMR2442FX-C-(U) Rackmixer
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Master Section
28
27
33
31
32
30
29
34
35
36 37
38
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I
TOP PANEL
CONNECTIONS
EFFECTS
AUX SECTION
SUBGROUPS
CONTROL
ROOM
MASTER
USER MANUAL - LMR2442FX-C-(U) Rackmixer
PAGE 8
AUX SEND (1-4). These controls determine the overall output level of the AUX bus, with ratios
of the different channel contributions set by the channel AUX controls (12&14). The AUX bus
signal is then sent to either the external AUX SEND connectors (for AUX1-2-3) on the rear
panel (section K) or to both the rear panel connector and the internal effects processor (AUX
4).
AUX Send SOLO. Pressing any of these buttons will put the relative AUX Send into SOLO mode,
allowing to mute all sources on which SOLO is not selected, in one go. This helps to “isolate”
a specific source to make adjustments to the level or other settings.
AUX RETURN. This sets the level for the signals coming in through the rear-panel RETURN
inputs (section L). Note these signals can both be mono or stereo, depending on the
connected sources in section L. If no source is connected to the AUX-RTN-D input on the rear
panel, then RTN-D carries the output of the internal effects processor. Note that these inputs
are independent from the AUX SEND signal and might receive any signal, also others than
what has been sent through the relative AUX SEND. For RTN-A and RTN-B, they can also be
fed back into SEND-1 and SEND-2 respectively with the volume set by the controls (31), if the
selection switches (30) are not pressed.
EXTERNAL AUX SEND selector switches. These switches determine which signal is fed back
into the AUX-1 and AUX-2 busses via the level controls (31). Either the RTN-A or the internal
effects can be chosen to be sent to AUX-1, and either the RTN-B or the internal effects can be
chosen to be sent to AUX-2. This allows to feedback either an externally or internally generated
effect into the AUX-1&AUX-2 busses, which due to their pre-fader routing primarlily serve for
monitoring purposes.
EXTERNAL AUX SEND volume controls. Determine which level of the signal set by the selector
switches (30) is fed into the relative AUX-1 or AUX-2 bus.
AUX RETURN SOLO switch. This sets the AUX Return section into SOLO mode,
allowing to
mute all sources on which SOLO is not selected, in one go. This helps to “isolate” a specifc
source to make adjustments to the level or other settings.
AUX-RETURN routing switches. While RTN-A and RTN-B go straight to the main output, the
routing for RTN-C and RTN-D is more flexible. Aux Return C can be routed to the main mix or
control room. Aux Return D can be routed to the main mix and/or the subgroups by pressing
the appropriate switches. Aux Return D is automatically routed to the output of the internal
effects processor as well.
SUBGROUP ASSIGN switches. These switches assign any of the subgroups to either the left
or the right side of the master signal (or both). Please note that for the use of the PAN (15)
and BALANCE (26) controls in the input channels, it is assumed that subgroups 1 and 3 are-
routed to the left side of the master, while subgroups 2 and 4 are routed to the right side of
the master. If you happen to set these switches (34) in a different manner, the left-right stereo
imaging of a channel may reverse.
SUBGROUP FADER. Determines the total level of the respective subgroup signal, both in the
main mix as well as at the subgroup outputs on the rear panel (section M).
EFFECTS PARAMETER button. The choice of the parameter to be edited can be made here,
the current parameter under editing is shown by the parameter indicators (37).
PARAMETER INDICATORS. Show which of the available parameters is chosen for editing via
the switch (36).
Effects processor display. Indicates all important information about the effects status.
28
30
29
27
33
31
32
34
35
36
37
38
USER MANUAL - LMR2442FX-C-(U) Rackmixer
PAGE 9
EFFECTS TAP TEMPO button. This allows to tap along with the music to set a time-relevant
parameter (if available) in the chosen effect algorithm. For effects where no time-base param-
eter is available, this button is used to set a 3rd effects parameter. For all effects with a
tap-settable time base, the rear illumination of this button will flash with the speed of the set
timebase. See below algorithm table for more information.
EFFECTS DATA DIAL. Turning this infinite control scrolls through the list of available effect algo-
rithms (see list below), and the currently pre-selected algorithm’s name will flash in the display
unless it is either confirmed by pressing the dial or dismissed if no further action is taken. The
DATA DIAL also serves to adjust a parameter of the effect if the EFFECTS PARAMETER button
(36) is pressed first and a parameter is chosen by consecutively pressing the EFFECTS
PARAMETER button (indicated by 37) for editing. The DATA DIAL then allows to change the
parameter value and to confirm the change by pressing the dial. In case no confirmation is
invoked, the parameter will remain unchanged and the display (38) will return to indicate the
current algorithm name.
2TR to Mix button. This routes the 2 Track stereo RCA inputs (50) to the main mix. The level
of this input is controlled by the output level of the external audio device.
CONTROL ROOM SOURCE SELECTOR. These buttons determine whether the Master,
Subgroups and/or 2 Track inputs are routed to the control room/headphone outputs.
CONTROL ROOM VOLUME. Sets the level at the control room output (section O).
HEADPHONE volume. Sets the level at the headphones output (52).
POWER INDICATOR. Indicates whether the unit is switched on or off, in response to the
POWER switch setting (section Q).
PHANTOM POWER INDICATOR. Indicates whether the phantom power supply is switched on
or off, in response to the PHANTOM POWER switch setting (section Q).
MAIN LEVEL METERS. Show the output level in 15 steps on a LED bargraph meter.
SOLO MODE SWITCH and INDICATORS. This button allows you to switch the solo mode
between After Fader Listen (AFL) and Pre Fader Listen (PFL) operations. When the button is
pressed, the signal will be routed from the solo sources post-fader and the AFL LED will be lit.
This means that the position of the channel fader(s) that is being soloed will determine the level
heard when monitoring this channel in the Control Room and Headphones. When the Solo
Mode button is not pressed, the solo will be in Pre Fader Listen (PFL) mode and the PFL LED
will be lit. Use the solo function in PFL for setting the gain on inputs and use AFL for normal
soloing operations, such as reviewing an individual or selected number of channel input signals
to hear how they sound before they are routed to the main mix.
MASTER FADER. Controls the volume of the main mix at the outputs in section P.
2TR In-Out. This is an unbalanced RCA stereo connector for a tape or solid state recorder in
order to record from the main mix and replay into the main mix.
EFFECTS FOOT SWITCH. Allows to enable/disable the internal effects processor via an exter-
nal foot switch.
HEADPHONES OUTPUT. Connect standard stereo headphones (min 32 Ohm impedance)
here to listen to the signal determined by the respective controls (42, 44).
USER MANUAL - LMR2442FX-C-(U) Rackmixer
PAGE 10
Rear Panel Connections / Elements
Q
P
O
N
M
L
K
J
POWER SECTION. The IEC wide-range AC power inlet, the mains power switch (status
indicated by LED 45) and the phantom power switch (status indicated by LED 46) are located
here.
MAIN OUTPUT section. This contains a pair of XLR outputs which carry the balanced main mix
signal, as well as a pair of balanced TRS outputs carrying the same signal. Further, a pair of
unbalanced TRS insert jacks is provided to insert any signal processor into the main mix path
via standard Y-cables (insert cables).
CONTROL ROOM OUTPUT. This is a pair of TRS connector carrying the signal determined by
the respective controls (42, 43).
INTERNAL EFFECTS OUTPUT. This is an unbalanced stereo TRS output which carries the
stereo output of the internal effects processor.
SUBGROUP OUTPUTS. Every subgroup has two parallel balanced TRS output jacks.
AUX SEND. Every AUX bus has a balanced TRS output which carries the signal composed
from the channel AUX bus controls and the AUX SEND level controls (27).
AUX RETURN. Four AUX Return inputs are provided for connecting any sort of mono or stereo
line level signal. The level of these inputs is adjusted by the respective RETURN controls (29).
Insert a mono source into the L jack of any pair to make sure the signal is fed into both L and
R main mix. Note that for AUX-RTN-D, inserting any connector into these sockets will disable
the internal effects processor’s output to be fed into the main mix. Also note that AUX-RTN-D
has no automatic mono/stereo switching function, and is hence mainly suitable for stereo
input signals.
DIRECT OUT. This takes the input channel signal off every respective channel after the pream-
plifier. Unlike an INSERT jack, the signal path is not interrupted. These jacks are hence useful
for multitrack recording of the raw input signal during a performance, so that a separate
mixdown may be made later in a studio environment.
USB INTERFACE. This unit may be fitted with a built-in stereo in/out soundcard.
To play back audio:
A. Connect your computer to the mixer with a USB cable. Your computer should see the mixer
as a device labeled “USB Audio Codec”.
B. Select the mixer to playback audio from your system control panel.
C. Channels 11/12 are the playback channels for USB audio. Press the USB source button
(22) on this channel so that audio will playback.
To record audio
A. Connect your computer to the mixer with a USB cable. Your computer should see the mixer
as a device labeled “USB Audio Codec”.
B. Select the mixer to playback and record audio from your system control panel.
C. Setup your mixer to have audio coming in as you normally would.
D. Start up your DAW application on your computer. Make sure it is setup to receive audio
from the USB Audio Codec (the mixer)
E. Create an audio track on your mixer and enable it to record. To avoid a feedback loop turn
down the fader on channel 11/12 or switch the USB source button (22) to off.
F. Perform your audio on the mixer and record the track on your DAW application. Note that
different operation systems may need different gain settings. Set the gain carefully to avoid
signal overload and distortion.
USER MANUAL - LMR2442FX-C-(U) Rackmixer
PAGE 11
Effect Algorithms / Parameters
Preset Name Variable Parameter Tap Control Description
1 CHORUS Depth, Speed Wav Shape Tri/Sine Chorus ensemble effect with short delays
2 FLANGER Depth, Res Oscillation Speed Classic stereo flanger with a slow sweep
3 PHASER Depth, Res Oscillation Speed Modulated sweeping effect
4 TREMOLO Depth Oscillation Speed Rapid reiteration of a note producing
prominent overtones
5 DELAY Feedback, Mod Delay Time Simple mono delay, great for vocals and guitars
6 ECHO Time, Damp Delay Time Classic echo effect. Reflection of sound
7 RV-ROOM 1 Time, Pre Delay Dampening Bright/Dark Emulates a small studio room, great for adding
ambience to drums and instruments
8 RV-ROOM 2 Time, Pre Delay Dampening Bright/Dark Emulates a large studio room, great for adding
ambience to drums and instruments
9 RV-CHAM Time, Pre Delay Dampening Bright/Dark Gives the sound of a classical chamber, ideal
for string, and wind instruments
10 RV-THEAT Time, Pre Delay Dampening Bright/Dark Gives the sound of a large theatre, great for
adding ambience to instruments and vocals
11 RV-HALL Time, Pre Delay Dampening Bright/Dark Gives the sound of a concert hall, ideal for
keyboards, string, and wind instruments
12 RV-CHURCH Time, Pre Delay Dampening Bright/Dark Gives the sound of a Church, ideal for
keyboards, string, and wind instruments
13 RV-PLATE Time, Pre Delay Dampening Bright/Dark Emulation of a 70's plate reverb - a smooth
decay for instruments
14 RV-SPRING Time, Threshold Dampening Bright/Dark The sound of a spring reverb, adds a funky
vintage sound to guitars
15 RV-GATED Time, Pre Delay Dampening Bright/Dark Gated ambience. Applicable to vocals
and instruments
16 DETUNE Detune, Pre Delay Dampening Bright/Dark Slow pitch modulation with saturation
17 PSHIFTX1 Pitch Shift, Pre Delay Detune On/Off Pitch modulation with pre delay
18 PSHIFTX2 Shift A, Shift B Spread Narrow/Wide Pitch Modulation variation
19 VOCDBLER Detune, Delay Spread Narrow/Wide Vocal doubler effect - a Pitch Shifter with a slight
echo to fatten vocals or guitars
20 DEL-CHOR Bal, Depth Delay Time Mono Delay with Chorus effect
21 REV-MDEL Bal, Time Delay Time Mono Delay with Reverb
22 REV-PDEL Bal, Time Delay, Time Reverb with a short stereo ping-pong delay
23 REV-CHOR Bal, Time Oscillation Speed Reverb and Chorus multi-effect, nice
on keyboards
24 REV-FLGR Bal, Time Oscillation Speed Reverb with flanger multi-effect, interesting
with guitar
25 REV-VOCD Bal, Detune Dampening Bright/Dark Reverb with vocal doubler multi-effect, great for
pop vocals
USER MANUAL - LMR2442FX-C-(U) Rackmixer
PAGE 12
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 your 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 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 the audio mixer
Switch on any audio processor between the mixer and the amplifier(s) [if any].
Switch on the amplifier(s).
Turn up the audio level on your sources if such controls are provided.
Set the audio output of your mixer to a low level.
Set the audio output of any audio processor between the mixer and the amplifier(s) to a medium
level [if any such processors].
Turn up the volume controls of your amplifier(s) slowly.
Make adjustments to all volume settings as needed.
For switching off, follow the inverse sequence – always switch off your amplifier(s) first, then any
processors between mixer and amplifier(s), then the mixer, then the 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 - LMR2442FX-C-(U) Rackmixer
PAGE 13
Connections
This product 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 opera-
tion. Balanced connections are to be preferred over unbalanced connections where applicable 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.
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
USER MANUAL - LMR2442FX-C-(U) Rackmixer
PAGE 14
Technical Specifications
Block Diagram
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.
RTN-A/EFX TO AUX-1
RTN -B /EF X
TO AUX-2
Preamp Noise (EIN) 20 Hz to 20 kHz, (150Ω source)..............-114dB
Residual Output Noise All level controls @ minimum................-95dB
Crosstalk Same channel (stereo separation)..............................-70dB
Frequency response +0 / -1dB...........................10Hz-22kHz
THD Mic In to Main Out, 20Hz to 20kHz..................................0.007%
AC IN (EU version)............................AC110-250V~ 50-60Hz
Dimensions (with plastic side covers)..........W482xH412xD110mm
Weight .............................................................7.05kg
USER MANUAL - LMR2442FX-C-(U) Rackmixer
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]
EC Declaration of Conformity
Manufacturer: Adelto Technologies Limited
Address: Unit 2A Springfield Road, Springfield Industrial Estate
Burnham-on-Crouch, Essex CM08UA, England
We declare on our own responsibility, that the equipment
Hill Audio LMR2442-FXC-U
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:
Burnham-on-Crouch, 10.09.2015
Authorized SignaturePlace and date of issuing
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