Lambda Labs MF-15A User manual
MF-15A Manual
Version 1.1
MF-15A Manual
Version 1.2 05/2020
© 2020 Lambda Labs; All rights reserved
This manual is optimized to save paper and to print 2 pages per DIN A4 sheet.
Lambda Labs - Professional Acoustics MF-15A Manual
Contents
!" #$%&'( )
1.1.General safety information 3
1.2.Declaration of Symbols and Illustrations of this Manual 3
1.3.IMPORTANT GENERAL SAFETY REGULATIONS 4
1.4.EC declaration and conformity 7
*" +,& -./!01 2
2.1.Technical data overview 8
2.2.General Components 9
2.2.1.Amplifier Module & DSP 11
2.2.1.1.Amplifier Modul & DSP: XLR Connectors 12
2.2.1.2.Amplifier Module & DSP: Powercon Mains 12
2.2.1.3.Amplifier Module & DSP: Gain Control 13
2.2.1.4.Amplifier Module & DSP: Status Indicators 13
2.2.1.5.Amplifier Module & DSP: Selecting Presets 14
2.2.1.6.Amplifier Module & DSP: Preset Assignment 15
2.2.1.7.Amplifier Module & DSP: Module Cover „L“ Mounting 16
2.2.2.Distance Rod 17
2.2.3.Wheelboard Options & Mounting 18
2.3.Maintenance 20
2.4.Dimensions 20
www.lambda-labs.com !1
Lambda Labs - Professional Acoustics MF-15A Manual
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This manual contains essential information on product safety, installation and usage. Read this manual carefully in order to
become familiar with the operation and usage of the product/s. Read this manual carefully BEFORE operating the product/s
for the first time! Read the IMPORTANT GENERAL SAFETY REGULATIONS you can find on the next pages!
•Keep this manual within reach while operating the product/s all the time!
•As a Lambda Labs products rental partner, always attach the appropriate user manuals to the
devices. Should you need additional printed manuals, please order them from Lambda Labs or
download a latest version!
•When reselling the product/s, hand over the manual to the new owner and provide written
documentation about any changes of the system which may have been applied!
•Always use the latest manual edition! Check our website regularly for updates!
While all information in this manual has been prepared to the best knowledge and with the utmost care, Lambda Labs can not
guarantee the accuracy of the documentation in all cases. Lambda Labs disclaims any liability for any errors or omissions that
may be inferred from this manual or the products described therein. This does not apply to intent and gross negligence.
Technical specifications, as well as dimensions, weight and properties do not constitute guaranteed characteristics. Lambda
Labs expressly reserves the right to make changes and modifications in accordance with statutory provisions and to improve
product features.
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In order to point out potential sources of danger and application errors, the following symbols and illustrations are used in this
manual:
www.lambda-labs.com !3
;1A3BCD
The warning symbol "DANGER" indicates that non-observance may pose adanger to the
operator or to other persons in close range and the loudspeaker product!
E1F+?GAD
The warning symbol "CAUTION" requires the operator to take particular precautions to
prevent possible damage to the loudspeaker product!
!
DANGER!
!
CAUTION!
Lambda Labs - Professional Acoustics MF-15A Manual
!")" ?-HGC+1A+ 3BABC1I #1.B+J CB3FI1+?GA#
www.lambda-labs.com !4
1++BA+?GAD
The warning symbol "ATTENTION" indicates that aspecial attention should be given to
certain setup activities or applications!
AG+BD
This illustration notifies the operator about hints and help to simplify and to accelerate the
use of the loudspeaker, the setup process or to better understand some contexts.
!
ATTENTION!
!
#$%& 7'$4> 94 7@8'$=6& @4>&5K59@4> L
Always ensure agood stability of the loudspeaker, especially when using it with distance
rods. When placing the loudspeaker on the ground or platforms, make sure the area is even
and capable to carry the total load! Secure the loudspeaker with straps to the ground or
suitable platforms! ;9 AG+ 7'$<M :95& ',$4 27@=N99%&57 94 &$<, 9',&5L
O8K, 79@4> P5&77@5& 6&Q&67L
Loudspeakers are capable to deliver dangerously high sound pressure levels and can cause
permanent hearing loss. Always pay close attention to the SPL levels when using asound
reinforcement product or system! Always adhere to the corresponding statutory
provisions and safety regulations.
R@$68%8&> 9P&5$'957L
The operation as well as the planning of the setup may only be carried out by qualified
personnel who are familiar and experienced with the instructions and the implementation
of the operating procedures!
I9<$6 7$%&'( 5&K@6$'8947L
Other safety regulations may apply in different countries. If changes occur, get to know
the local regulations and if necessary, adapt them to the respective loudspeaker setup. It
is the duty and responsibility of the operator to carry out any ground setup and any flown
installation in accordance with the local regulations!
S
DANGER!
S
DANGER!
T95M 7$%&'(L SSSS
In order to avoid accidents, it is the responsibility of the operator and the contractor to
ensure that the local accident prevention regulations are always fulfilled. During the set up
process of the loudspeaker and especially the entire rigging process, the operators should
always wear head and foot protection, hand protection and possibly ear protection! Never
climb on stacked or flown loudspeakers!
S
DANGER!
S
DANGER!
S
DANGER!
Lambda Labs - Professional Acoustics MF-15A Manual
www.lambda-labs.com !5
?47P&<'894 9% &6&<'58<$6 8'&:7L
Check ALL involved electrical devices such as cables, Powercon sockets and other
components which are involved in the powering process of the loudspeaker before every
use! Even with the slightest doubts about the function and safety of any components,
these should not be used!
;(4$:8< I9$> UT84> I9$>VL
Lambda Labs does not recommend the use of stacked Lambda Labs subwoofers higher than
3 meters (78,7“) with wind forces greater than 6 bft (12.3 m / s, 44 km / h,). If the wind
force exceeds 8 bft ( (17.8 m / s, 62 km / h), clear the loudspeaker area, bring down the
loudspeakers and secure them!
#&'@P &4Q8594:&4'L
Keep the device dry and avoid the contact to heavy dust, sand and prolonged exposure to
intense sunlight or strong vibrations and impact.For safety reasons, it is not allowed to
place any liquid containers on or near to the enclosure.
H6$<&:&4' W84'&5$<'894 N8', 9',&5 >&Q8<&7L
The device should not be placed near any heat producing sources or exposed to
extremely high temperatures or below zero degrees Celsius. Sufficient ventilation should
be provided when operating the loudspeakers!
#&'@P $5&$ P59'&<'894L
When setting up asystem with stacked loudspeaker arrays, secure the entire work area
with crowd control barriers. Make sure that the secured area is sufficiently large in
proportion to the height of the stack!
E$=684KL
Lay down all cables with care. Additionally, secure the cables with duct tape or cable
bridges and mark them for safety reasons. Do not place anything on the cables of the
device. Use intact power cords only! The use of power cables and power distributions
with insulated or missing protective earth conductor (PE) is strictly forbidden!
H9N&5 684&!
Always ensure, that the power line is sufficient, stable and safe.
?4Q878=6& >$:$K&7L
In the event of a potential damage of a loudspeaker by falling down from a height or being
involved in a transportation accident, it is mandatory to check the loudspeaker for
mechanical stability.
-$84'&4$4<&L
Please refer to Chapter *") „Maintenance“. If any damage or failure occurs to the
loudspeaker itself or the integrated rigging system, please contact the Lambda Labs
technical support and wait for further instructions! Do NOT repair or exchange speaker
parts or rigging components by yourself and without support of aqualified service
personnel!
S
DANGER!
S
DANGER!
S
DANGER!
S
DANGER!
S
DANGER!
S
DANGER!
S
DANGER!
S
DANGER!
S
DANGER!
Lambda Labs - Professional Acoustics MF-15A Manual
www.lambda-labs.com !6
-$4@$6L
Keep this manual within easy reach for operating the product/s all the time!
As aLambda Labs products rental partner, always attach the appropriate user manuals to
the devices. Should you need further manuals, please order them from Lambda Labs or
download acurrent copy!
If you resell the loudspeaker, hand over the manual to the next operator and provide
written records about any changes of the device which may have been applied! Check our
website regularly for updates in order to use always and only the latest manual version!
#'9584KL
Store the devices in adry, cool and clean environment!
#,8PP84K
Keep the packaging of the devices in order to send them in original packaging in case of
damage. This minimizes the risk of possible transport damage.
S
DANGER!
S
S
CAUTION!
Lambda Labs - Professional Acoustics MF-15A Manual
!"X" BE >&<6$5$'894 $4> <94%95:8'(
Lambda Labs
Austria
Declares that the following product:
MF-15A
Are in conformity with the provisions of:
Machinery Directive 2006/42/EC
2011/65/EU, RoHS
To guarantee the safety of the components, the following standards and rules have been complied:
EN ISO 12100-1: 2011 (Mechanical Safety)
DIN 18800 (Mechanical Structure)
BGV-C1 /DGUV Regulation 17 &18 (Mechanical Standard applied in Germany)
WEEE Declaration (Disposal)
Electrical and electronic devices must be disposed of separately from household or municipal waste at the end of its operational
lifetime. Please dispose of this product according to the respective national regulations or contractual agreements. If there are any
further questions regarding the disposal of this product, please contact Lambda Labs.
www.lambda-labs.com !7
Graz, 17/02/2020
Steffen Kroschel, Chief Technology Officer (CTO)
Lambda Labs - Professional Acoustics MF-15A Manual
*" +,& -./!01
*"!" +&<,48<$6 >$'$ 9Q&5Q8&N
www.lambda-labs.com !8
#(7'&:
High power subbass in Manifold technology
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1 x 15“ ultra long excursion driver with 4“VC and hardened cone
Aluminium demodulation rings
B6&<'5948<7
1600W RMS amplifier power
#8K4$6 H59<&7795
24bit ADC/DAC, 48kHz sample rate
.5&Y@&4<( C&7P947&
35 – 200Hz (+/- 3dB)
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98dB / 1W / 1m
10 4 / 1 W / 1 m - s t a c k o f 4
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XLR in / out, Powercon in / out
B4<697@5&
Rigid, braced construction of special 15mm lightweight-plywood
.8487,
High density black polyurethane-coating (Other colours on request)
.594' E9Q&5
Weather-resistant front fabric on coated 1.5mm perforated steel
T8>',
25.9“ (657 mm)
O&8K,'
14.8“ (377 mm)
;&P',
34.3“ (872 mm)
T&8K,'
67.5 lbs (30.6 kg)
Lambda Labs - Professional Acoustics MF-15A Manual
*"*" 3&4&5$6 E9:P94&4'7
2.2 Figure 1: MF-15A Front Side
www.lambda-labs.com !9
a)
b)
a)
d)
PART
DESCRIPTION of 2.2 Figure 1
REFERENCE
a)
O$4>6&
Arecessed handle is located on the side plates of the cabinet to carry and move
the loudspeaker.
Z
b)
.594' E9Q&5
The drivers are protected by aperforated steel grill. Additionally, aweather
resistant fabric on the grill protects the drivers from dust and rain. The fabric is
acoustically transparent.
Z
c)
C@==&5 .&&'7
8rubber feets, attached to the loudspeaker`s bottom and side plate, make the
loudspeaker stand safely in both horizontal and vertical position.
Z
d)
-9@4'84K .6$4K&
AMounting Flange with M20 Thread is located on the loudspeakers top side to
install adistance rod. (Distance rod /distance rod with hand crank). Lambda
Labs recommends to use products with the „Ring Lock“ system.
Chapter *"*"*
c
;$4K&5D When using a distance rod mounted on subwoofer/s, the loudspeaker should never
be heavier than the subwoofer/s itself. The longer the distance rod is extended, the greater the
counterweight should be. Secure the subwoofers to each other with straps and/or to the ground/
suitable platforms! Check the stability in every case!
S
DANGER!
Lambda Labs - Professional Acoustics MF-15A Manual
2.2 Figure 2: MF-15A Back Side
www.lambda-labs.com !10
e)
f)
g)
PART
DESCRIPTION of 2.2 Figure 2
REFERENCE
e)
1:P68%8&5 -9>@6&
The built in amp module delivers 1600W RMS power. It comes with 4ready to
use presets to match the various loudspeaker setups and its use with further
products like high/mid frequency range loudspeakers.
Chapter *"*"!
f)
T,&&6=9$5> [#84K6&\ .8]'@5&
The MF-15A wheelboard „Single" is equipped with 2Combi Pins. By connecting
the 2Combi Pins to the Wheelboard Fixture, the wheelboard can be attached to
the subwoofer`s back side. Alternatively, use the MF-15A with the wheelboard
„Stack“ to transport up to 6MF-15As. For further details, refer to Chapter
*"*") as well.
Chapter *"*")
g)
T,&&6=9$5> C&<&77&7
4recesses at the backside of the MF-15A help to attach the wheelboard more
easily. They match the wheelboard`s rubber feets with the recesses.
Chapter *"*")
f)
Lambda Labs - Professional Acoustics MF-15A Manual
*"*"!" 1:P68%8&5 -9>@6& W;#H
2.2.1 Figure 1: Front View Amplifier Module
www.lambda-labs.com !11
a)
c)
b)
d)
PART
DESCRIPTION of 2.2.1 Figure 1
REFERENCE
a)
;#H E94'596 H$4&6
The DSP Control Panel contains
the XLR input and output to apply
asignal, the gain control and the
dial button to select the provided
factory presets. LED displays
gives you further information
about acertain status of the
amplifier module.
Chapter *"*"!"!
Chapter *"*"!")
Chapter *"*"!"X
Chapter *"*"!"0
Chapter *"*"!"^
b)
;?A _!* -X #<5&N7
To protect the control panel from
unauthorized access, an optional
module cover can be installed. To
do this, the 4upper M4 screws
of the module must be removed.
Chapter *"*"!"`
c)
E99684K .847
The integrated amplifier module
can develop excessive heat,
which will be dissipated by the
cooling fins.
;1A3BCD +,& 9@'78>& 9% ',&
$:P68%8&5 :9>@6& $4> ',&
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d)
H9N&5<94 -$847 ?4WG@'
Mains connection to power the
amplifier module and to power
further loudspeakers.
;1A3BCD C87M 9% &6&<'58<
7,9<ML F7& K59@4>&> :$847
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Chapter *"*"!"!
Lambda Labs - Professional Acoustics MF-15A Manual
*"*"!"!" 1:P68%8&5 -9>@6 W;#HD aIC E944&<'957
The amplifier module provides 2pieces of balanced XLR connectors wired in parallel (linked) to apply asignal to the loudspeaker
and to link the signal to further loudspeakers. The male XLR connector is located on the left side. The female XLR connector on
the right side. The pin assignment of balanced XLR connectors can be seen here:
*"*"!"*" 1:P68%8&5 -9>@6& W;#HD H9N&5<94 -$847
Mains connectors to power the amplifier module and to power further loudspeaker`s amplifier modules. The blue connector at
the left side provides the mains supply. The grey Powercon connector at the right side provides the power supply link.
www.lambda-labs.com !12
;$4K&5D The amplifier module can develop excessive heat! Do NOT touch the surface of the amplifier
module during and right after its operation! Allow the unit to cool down before packing the
loudspeaker.
S
DANGER!
;$4K&5D RISK OF ELECTRIC SHOCK! Use grounded mains only! Use undamaged cables and
connectors only! Do NOT insert anything other into the Powercon connectors than Powercon plugs!
Keep the connectors away from water and excessive humidity!
S
DANGER!
2
1
3
1
2
3
PIN
Assignment (Balanced)
1
Ground
2
Signal +
3
Signal -
Male
Female
E$@'894D Pull by the plug rather than by the cord when disconnecting the XLR plugs!
S
CAUTION!
E$@'894D At the signal input of the active module, a maximum voltage of +/- 15Vpeak (~ + 22dbu)
may be applied!
S
CAUTION!
Lambda Labs - Professional Acoustics MF-15A Manual
*"*"!")" 1:P68%8&5 -9>@6& W;#HD 3$84 E94'596
When the gain control is at its maximum position, the maximum input voltage before clipping is 5Vrms (+/- 7V peak). This value
increases proportionally by turning back the gain control. In the 12 o’clock position, the input signal is reduced by 6dB.
Therefore the maximum input voltage before clipping increases to 10Vrms (+/- 14V peak) accordingly. The Gain Control is
located in the upper middle of the DSP Control Panel:
*"*"!"X" 1:P68%8&5 -9>@6& W;#HD #'$'@7 ?4>8<$'957
In the upper left corner of the Control Panel you will find 4coloured signal LED displays as status indicators of the amplifier
module. Their meanings are:
www.lambda-labs.com !13
;$4K&5D RISK OF ELECTRIC SHOCK! Use grounded mains only! Use undamaged cables and
connectors only! Do NOT insert anything other into the Powercon connectors than Powercon plugs!
Keep the connectors away from water and excessive humidity!
S
DANGER!
E$@'894D The mains POWERCON connectors are not suitable for powering up or down the system and
so should not be plugged or unplugged while under voltage! Always connect the POWERCON plug
FIRST, THEN connect the Schuko plug (or other Standard 3 Pin Power Plug) to the AC power socket.
Follow these steps in a reverse order to power down the system!
S
CAUTION!
E$@'894D bc/15Vpeak (~+22dBu) at the input shouldn’t to be exceeded under any circumstances!
S
CAUTION!
Lambda Labs - Professional Acoustics MF-15A Manual
If the red IB; %6$7,&7,one of the integrated limiters for the lowmid driver (distortion limiter, continuous output limiter,
continuous current limiter, peak current limiter) is triggered. Together they serve to ensure sound quality and safe operation.
Short flashing at high SPL output conditions is acompletely normal and usual operational status.
O&$Q86( %6$7,84K or even <94'849@7 68K,' means an overdriven signal chain which affects the sound quality. Extreme or
permanet overdrive is hazardous for the low frequency driver, especially on high ambient temperature or with stationary use of
sine signals with frequencies in the range of the loudspeakers minimal electrical impedance.
The yellow LED is atemperature monitoring for the amplifier module and lite up under extreme conditions only.
A769N %6$7, is an indicator for high temperature. This status is just for your information.
A5$P8> %6$7,84K will follow if the temperature rising further, and causes areduction of the output level to lower the
temperature to an uncritical level again. When playing music, this protective mechanism should only appear if the ambient
temperature is very high and/or the equipment is exposed to direct sunlight.
A<94'84@9@7 68K,' means atemporary muting of the output.
The green signal LED illuminates permanently as soon as an input signal is detected. If it does not light up despite the
connection to the output device, check the XLR cables and all peripheral connections. Make sure that the READY LED is also
permanently lit.
The green READY LED lights up permanently as soon as astable power supply has been applied and the DSP Unit has been
booted up completely.
*"*"!"0" 1:P68%8&5 -9>@6& W;#HD #&6&<'84K H5&7&'7
The amplifier module has 4pre-programmed factory-set presets. These are optimized for the particular speaker type and its
possible applications. The presets can be selected by pushing the Preset Select button. After the preset has been loaded, the
LED of the selected preset is illuminated permanently. The Preset Select button is located in the middle of the Control Panel. To
make sure that the desired preset will be selected, the preset assignment list is printed on the lower part of the Control Panel:
www.lambda-labs.com !14
Lambda Labs - Professional Acoustics MF-15A Manual
*"*"!"^" 1:P68%8&5 -9>@6& W;#HD H5&7&' 1778K4:&4'
Due to the complexity of the signal structure, aprogramming of the presets by the customer is not supported by Lambda Labs.
The integrated setups already fulfill the demands of the most common applications. To allow for settings of EQ or delay, a
controller can be inserted in the signal path to adapt the active speaker to every acoustical situation. For any questions about
the presets, please contact the Lambda Labs support.
HCB#B+ !D #@==$77 E59779Q&5 -9>& 2dOe
HCB#B+ *D #@==$77 E59779Q&5 -9>& !ddOe
HCB#B+ )D #@==$77 E59779Q&5 -9>& !XdOe
The subbass crossover modes has a24dB/oct. Linkwitz-Riley low pass filter at 80/100/140Hz. Accordingly, the loudspeaker for
the high-mid frequency range should have a24dB/oct. Linkwitz-Riley high pass characteristic at 80/100/140Hz. The delay has
to be adjusted in away that both systems have matching phase responses in the crossover region. Especially in case of
subwoofer systems which exhibits larger propagation delay (especially horn loaded systems) larger delay values have to be set.
HCB#B+ XD E$5>898> -9>& %95 H5&7&' !95 *
In this mode of operation the bass array forms acardioid-shaped polar characteristic with maximized rearside damping. For the
cardioid mode there is at least one MF-15A operated with the Preset 1-3 together with at least one MF-15A driven in the
Preset 4and turned backwards. Is the maximum rear-side damping planed to take effect at ahigher distance, it is advisable to
put one Manifold forwards (Preset 1-3) and one backwards (Preset 4). Is the maximum rear-side damping needed directly behind
the bass array, the output level of the back-facing Manifold has to be reduced. Alternatively and for larger SPL capability in the
front, the use of 1backward and two -three forward oriented Manifolds is recommended.
www.lambda-labs.com !15
Lambda Labs - Professional Acoustics MF-15A Manual
*"*"!"`" 1:P68%8&5 -9>@6& W;#HD -9>@6& E9Q&5 [If -9@4'84K
To protect the Control Panel from unauthorized access, amodule cover can be installed. To do this, follow the instructions
below:
1. Remove the 4 x M4 DIN 912 screws with a
ratchet or an electric screwdriver. Keep the
screws and the M4 washers and M4 snap
rings at a safe place. Always start removing
the M4 Screws in the corners and follow an X
order to unmount the other screws to avoid
excessive stress in the Amplifier Module’s
heatsink!
2. Put the Module Cover „L“ over the Control
Panel area and reinsert the removed parts
from step 1. To properly install the module
cover, follow the order of the parts as shown
in the drawing:
a) M4 washer
b) M4 snap ring
c) M4 DIN 912 screw
3. Fix the screws with a torque of *A: and
follow an X order to mount them. Do not
start the order with a corner screw to prevent
any damage to the amplifier module.
www.lambda-labs.com !16
a)
b)
c)
•Ratchet or electric
screwdriver
•HEX BIT Number 3(Wrench
Size 3mm)
S
Lambda Labs - Professional Acoustics MF-15A Manual
*"*"*" ;87'$4<& C9>
With the use of the built in Mounting Flange, aDistance Rod with M20 thread can be mounted on the MF-15A.
www.lambda-labs.com !17
E$@'894D Fix the screws with atorque of *A:! Follow an X order to unmount/mount the screws
and do not start with a corner screw! Use the screw parts in the right order to prevent any damage to
the Module Cover!
S
CAUTION!
A9'&D The items described above can be purchased as:
Distance Rod V1: Distance Rod with splints (Ring Lock)
Distance Rod V2: Distance Rod with hand crank and splints (Ring Lock)
S
Distance Rod V2
;$4K&5D When using a distance rod mounted on a subwoofer/s, the loudspeaker should never
be heavier than the subwoofer/s itself. The longer the distance rod is extended, the greater the
counterweight should be. Secure the subwoofers to each other with straps and/or to the ground/
suitable platforms! Check the stability in every case! For further details, refer to the individual
loudspeaker manuals as well.
S
DANGER!
Lambda Labs - Professional Acoustics MF-15A Manual
*"*")" T,&&6=9$5> GP'8947 W-9@4'84K
The MF-15A subwoofer is available with 2different wheelboard options:
1. MF-15A Wheelboard „Stack“
2. MF-15A Wheelboard „Single“
1. Remove the 2 x Combi Pins from their storage
position. To do this, push the release button
of the Combi-Pin and pull out the pin. Just let
the Combi-Pin connected to the wire rope
hanging at the outside.!
www.lambda-labs.com !18
;$4K&5D Do not stack more than 6 subwoofers on the wheelboard! Secure the stack with a strap!
S
DANGER!
2.2.3 Figure 1: Combi Pin
PART
DESCRIPTION of 2.2.3 Figure 1
REFERENCE
a)
E9:=8 H84
The Combi Cluster Pin is a Ball Lock Pin with an additional M10 thread.
Chapter *"*")
a)
Size:
57x40x10mm
Lambda Labs - Professional Acoustics MF-15A Manual
2. Match the wheelboard`s rubber feets with
the recesses of the backplate of the MF-15A
and push the wheelboard as close as possible
against the MF-15A enclosure.
3. To attach the wheelboard to the MF-15A
enclosure, push the release button of the
Combi Pins and insert them into the
Wheelboard „Single“ Fixtures at the backside.
After inserting them completely, release the
release button.
4. To provide a vibration free connection, turn
the Combi-Pin <69<MN87& until the
wheelboard is tightly fixed.
www.lambda-labs.com !19
E$@'894D Always ensure the correct and safe mounting of the wheelboard! Make sure, the Combi
Pin has been inserted completely!
S
CAUTION!
Table of contents
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