Lambda Labs DH-18 User manual
DH-18 Manual
Version 1.1
DH-18 Manual
Version 1.1 02/2022
© 2022 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 DH-18 Manual
Contents
1. Safety 3
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
2. The DH-18 8
2.1.Technical data overview 8
2.2.General Components 9
3. Cabling 11
4. Changing the DH-18`s mode of operation 11
4.1.Presets & Modes 11
4.2.Subwoofer Stack Types & Modes 12
4.3.Operating the Changing Lid 14
5. Distance Rod 17
6. Wheelboard Mounting 18
7. Maintenance 20
8. Dimensions 21
www.lambda-labs.com 1
Lambda Labs - Professional Acoustics DH-18 Manual
1. Safety
1.1. General safety information
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 the 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.
1.2. Declaration of Symbols and Illustrations of this Manual
In order to point out potential sources of danger and application errors, the following symbols and illustrations are used in this
manual:
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DANGER:
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!
CAUTION:
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 DH-18 Manual
1.3. IMPORTANT GENERAL SAFETY REGULATIONS
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ATTENTION:
The warning symbol "ATTENTION" indicates that aspecial attention should be given to
certain setup activities or applications!
NOTE:
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!
Safe stand on suitable underground !
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! Do NOT stack more than 2subwoofers in D-Mode on each other!
Do NOT stack more than 6subwoofers in S-Mode on each other!
High sound pressure levels!
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.
Qualified operators!
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!
Local safety regulations!
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!
DANGER!
DANGER!
Work safety!
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!
DANGER!
DANGER!
DANGER!
Lambda Labs - Professional Acoustics DH-18 Manual
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Inspection of electrical items!
Check ALL involved electrical devices such as cables, Speakon 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!
Dynamic Load (Wind Load)!
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!
Setup environment!
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.
Placement &interaction with other devices!
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!
Setup area protection!
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!
Cabling!
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!
Changing Lid!
Always ensure, that the Changing Lid of the DH-18 is fully closed and safely locked!
Invisible damages!
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.
Maintenance!
Please refer to Chapter 7„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!
DANGER!
DANGER!
DANGER!
DANGER!
DANGER!
DANGER!
DANGER!
DANGER!
DANGER!
Lambda Labs - Professional Acoustics DH-18 Manual
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Manual!
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!
Storing!
Store the devices in adry, cool and clean environment!
Shipping
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.
DANGER!
CAUTION!
Lambda Labs - Professional Acoustics DH-18 Manual
1.4. EC declaration and conformity
Lambda Labs
Austria
Declares that the following product:
DH-18
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, 20/02/2022
Steffen Kroschel, Chief Technology Officer (CTO)
Lambda Labs - Professional Acoustics DH-18 Manual
2. The DH-18
2.1. Technical data overview
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System
Extreme high power subbass with Digitalhorn technology
Configuration
1 x 18" ultra long excursion driver with 5.3" VC as well as glass
fiber and epoxy reinforced coneAluminium demodulation rings
Power Handling
3600W RMS amplifier power
Frequency Response
S-Mode: 28 – 110Hz (+/- 3dB)
D-Mode: 30-120Hz (+/- 3dB)
Sensitivity
S-Mode: 102dB / 1W / 1m
D-Mode: 104dB / 1W / 1m
Connection
2 x Neutrik NL4 Speakon
Impedance
4 Ω
Enclosure
Rigid braced construction of special 15mm lightweight-plywood
Finish
High density black polyurethane-coating (Other colours on request)
Front Cover
Coated 2 mm perforated steel with weather-resistant micro-meshed
fabric
Width
22.9“ (582 mm)
Height
37.9“ (962 mm)
Depth
37.9“ (962 mm)
Weight
129 lbs (58.5 kg)
Lambda Labs - Professional Acoustics DH-18 Manual
2.2. General Components
2.2 Figure 1: DH-18 Front Side
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a)
b)
d)
PART
DESCRIPTION of 2.2 Figure 1
REFERENCE
a)
Handle
Arecessed handle is located on the top, back and bottom plate of the cabinet to
carry and move the loudspeaker.
_
b)
Front Grill
The driver is protected by aperforated steel grill. Additionally, amicro-meshed
weather resistant fabric on the inside of the grill protects the driver from dust
and small particles. The fabric is acoustically transparent.
_
c)
Rubber Feets
24 rubber feets, attached to the subwoofer`s cabinet, make the subwoofer
stand safely in all positions.
_
d)
Mounting Flange
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 5
e)
Changing Lid
By attaching the Changing Lid to the front or side of the subwoofer, the
subwoofer can be switched into different modes (S-Mode / D-Mode).
Chapter 4.3
c )
Danger: 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!
DANGER!
a)
e)
Lambda Labs - Professional Acoustics DH-18 Manual
2.2 Figure 2: DH-18 Back Side
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h)
g)
PART
DESCRIPTION of 2.2 Figure 2
REFERENCE
f)
Connector Section
2Neutrik NL4 Speakon connectors for driving the DH-18 subwoofer from a
Lambda Labs KW-18 Amplifier Rack. Both connectors can be used as an input or
link (Daisy Chaining) connector. One DH-18 subwoofer can be driven from one
channel of the KW-18 Amplifier. The DH-18 takes the signal from the +1/-1
pins.
Chapter 3
g)
Wheelboard Fixture
The DH-18 wheelboard is equipped with 2Combi Pins. By connecting the 2
Combi Pins to the Wheelboard Fixture, the wheelboard can be attached to the
subwoofer`s back side. For further details, refer to Chapter 6.
Chapter 6
h)
Wheelboard Recesses
4recesses at the backside of the DH-18 help to attach the wheelboard more
easily. They match the wheelboard`s rubber feets with the recesses.
Chapter 6
f)
g)
Danger: Make sure that the Changing Lid is closed correctly and completely at all times!
DANGER!
Lambda Labs - Professional Acoustics DH-18 Manual
3. Cabling
4. Changing the DH-18`s mode of operation
The DH-18 subwoofer can be set to different operating modes by moving the lockable Changing Lid. Depending on the
position of the Changing Lid, the subwoofer can be operated in S-Mode or D-Mode. The different modes influence the low
corner frequency, the radiation pattern and the maximum SPL capability of the subwoofer.
4.1. Presets &Modes
The DH-18 subwoofer provides two different modes to choose from.
•D-Mode
In D-Mode, the DH-18 provides 2dB more sensitivity and an extra amount of rear attenuation. At the same time, the low
corner frequency for this mode is 33Hz.
•S-Mode
In S-Mode, the DH-18 provides more very low frequency extension down to 28Hz. At the same time, the subwoofer in this
mode has 2dB less sensitivity and less rear attenuation.
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Cable Type
DESCRIPTION
8Pole Speakon Cable (20m)
20m 8x4mm2 High Quality Speaker Cable with 2pieces of Neutrik NLT8FX-BAG
Connectors. Use this cable between the Lambda Labs KW-18 Amplifier Rack and
the DH-18 enclosure together with the 8 Pole / 4x2 Pole Sub Speakon Breakout
Cable (5m).
Note: 8 Pole Speakon Cable 10m is also available.
8Pole Speakon Extension Cable (10m)
10m 8 x 4mm2 High Quality Speaker Cable with one Neutrik NLT8FX-BAG and one
Neutrik NLT8MX-BAG Connector.
8Pole /4x2 Pole Sub Speakon Breakout Cable (5m)
4 pieces of 2 x 2mm2 5m cables with 4 pieces of Neutrik NL4FC Connectors and
one Neutrik NLT8MX-BAG Connector. Use this cable between the Lambda Labs
KW-18 Amplifier Rack and the DH-18 enclosure together with the 8 Pole Speakon
Cable (20m).
Lambda Labs - Professional Acoustics DH-18 Manual
Lambda Labs recommends using the customized presets for D-Mode and S-Mode and provides presets for these modes for a
single, for double and for more than two DH-18 subwoofers in an array.
4.2. Subwoofer Stack Types &Modes
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4.2 Figure 1: Single Configuration DH-18 D-Mode
4.2 Figure 2: Double Configuration DH-18 D-Mode
Lambda Labs - Professional Acoustics DH-18 Manual
4.3. Operating the Changing Lid
1. Lambda Labs recommends replacing the
Changing Lid while the DH-18 is still on its
wheelboard. This way, the Changing Lid can
be replaced easily while the operator is
standing.
2. First, fold the handles of the two locks
outwards with the help of your fingers.
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4.2 Figure 6: Quad Configuration DH-18 S-Mode
Lambda Labs - Professional Acoustics DH-18 Manual
3. When the handles are fully unfolded, take
hold of them with your index and middle
fingers…
…and turn the left handle anti-clockwise and
the right handle clockwise at the same time…
…until the handles are rotated by 90 degrees.
4. Now pull the handles to pull the Changing Lid
out of the enclosure.
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Lambda Labs - Professional Acoustics DH-18 Manual
5. Next insert the Changing Lid with the handles
facing up into the opposite opening of the
DH-18. Make sure to first place the groove
completely in the recess before you push the
Changing Lid down. Also make sure that the
two locks are completely open.
6. Proceed in the reverse order to lock the locks.
Finally, fold the handles back in completely.
Always make sure that the locks are locked
safely and the lock latches are behind the
inner metal counter parts!
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1
2
Danger: Make sure that the Changing Lid is closed correctly and completely at all times! Always fold
the handles back completely to safe the lock! Always make sure, that the locks are locked safely and
the lock latches are behind the inner metal counter parts!
DANGER!
1
Lambda Labs - Professional Acoustics DH-18 Manual
5. Distance Rod
With the use of the built in Mounting Flange, aDistance Rod with M20 thread can be mounted on the DH-18.
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Note: 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)
Distance Rod V2
Danger: 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.
DANGER!
Lambda Labs - Professional Acoustics DH-18 Manual
6. Wheelboard Mounting
Attaching the DH-18 Wheelboard to the enclosure is done by the Combi Pin.
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.
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6. Figure 1: DH-18 Wheelboard
PART
DESCRIPTION of 6. Figure 2
REFERENCE
a)
Combi Pin
The Combi Pin is a Ball Lock Pin with an additional M10 thread.
Chapter 6
a)
6. Figure 2: Combi Pin
Size:
57x40x10mm
Lambda Labs - Professional Acoustics DH-18 Manual
2. Match the wheelboard`s rubber feets with
the recesses of the backplate of the DH-18
and push the wheelboard as close as possible
against the DH-18 enclosure.
3. To attach the wheelboard to the DH-18
enclosure, push the release button of the
Combi Pins and insert them into the
Wheelboard Fixtures at the backside. After
inserting them completely, release the release
button.
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