Danley DBH Series User manual

DANLEY OWNER’S MANUAL
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DANLEY OWNER’S MANUAL
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The instructions on this page apply to Danleypowered units.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Clean only with dry cloth.
6. Do not block any ventilation openings. Install in
accordance with the manufacturer's instructions.
7. Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including amplifiers)
that produce heat.
8. Do not defeat the safety purpose of the polarized or
grounding-type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two
blades and a third grounding prong. The wide blade or the
third prong is provided for your safety. If the provided plug
does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
9. The power plug at the wall must remain accessible to be
able to disconnect power from the apparatus.
10. Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
11. Only use attachments/accessories specified by the
manufacturer.
12. Unplug this apparatus during lightning storms or when
unused for long periods of time.
13. Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been damaged
in any way, such as power-supply cord or plug is damaged,
liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or
moisture, does not operate normally, or has been dropped.
14. This apparatus shall not be exposed to dripping or
splashing, and no object filled with liquid, such as vases,
shall be placed on the apparatus.
15. This apparatus has been designed with Class-I
construction and must be connected to a mains socket outlet
with a protective grounding connection (the third grounding
prong).
19. If the loudspeaker is exposed to changes in temperature
and humidity, internal condensation may develop. If
powered up with such condensation, electronic failure could
result. When exposed to environmental changes, allow the
loudspeaker at least 30 minutes to acclimate to a new
temperature before connecting to the ac mains and operating.
20. Danley Sound Labs loudspeakers can produce sound
levels capable of causing permanent hearing damage from
prolonged exposure. The higher the sound level, the less
exposure needed to cause such damage. Avoid prolonged
exposure to the high sound levels from the loudspeaker.
WARNING: TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOISTURE. DO NOT
EXPOSE THE APPARATUS TO DRIPPING OR
SPLASHING AND DO NOT PLACE OBJECTS FILLED
WITH LIQUIDS, SUCH AS DRINKS, ON THE
APPARATUS.
CAUTION: This product is energized as long as it is
connected to the AC mains supply.
CAUTION: Allow at least six inches of free space all around
the amplifier heat sink for sufficient ventilation.

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Section 1: Your New Subwoofer
1.1 Unpacking .......................................................................................................................
1.2 Inspection……………………………………………………………….......…..............
1.3 Shipping Damage ............................................................................................................
Section 2: Understanding the Difference
2.1 Tapped Horn Technology................................................................................................
2.2 DBH Technology ............................................................................................................
Section 3: Initial Set Up
3.1 What Size Amplifier to Use ............................................................................................
3.2 Connecting to the Tapped Horn ......................................................................................
3.3 Switch Modes for TH812, TH221, TH412, and DBH218...............................................
3.4 Rigging............................................................................................................................
Section 4: Operation
4.1 Acoustic Level Warning..................................................................................................
4.2 Operator Responsibility...................................................................................................
4.3 Ambient Temperatures....................................................................................................
4.4 Aqua Tight Coating.........................................................................................................
Section 5: Warranty
Section 6: Contact Information

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Section
Your New Subwoofer
1.1 Unpacking
For most of the Danley Sound Labs line we recommend that it be unpacked by two or more people. Refer to the spec sheet for
product weight. Remove tape and open top flaps. Lay the box on its side and slide the subwoofer out. Remove the packaging
wrap.
1.2 Inspection
Check to make sure the product is not missing hardware of any kind. If any brackets or additional accessory hardware is missing,
please don’t hesitate to contact Danley Sound Labs.
1.3 Shipping Damage
If your subwoofer appears to have been damaged in shipping, please take clear photographs and contact Danley Sound Labs
immediately.
Section 2
Understanding the Difference
2.1 THE TAPPED HORN
The Danley Tapped Horn Subwoofer™ is a proprietary design which allows us to build physically small subs which are very
efficient especially at the low end of their range and are virtually linear in their passband. Subjectively the TH series produce
very deep bass from generally very small boxes. They are unlike conventional horns in that combining multiple TH boxes together
results in more output, but not significantly more extension.
2.2 THE DANLEY BASS HORN
The DBH subwoofer is a Danley take on a conventional design. The DBH subs feature a front loaded, folded horn design. The
DBH subs behave conventionally in that adding boxes together not only increases the output, but extends the low frequency
response downward.
Section 3
Initial Set Up
3.1 What Size Amplifier to Use
Selecting the right amplifier for your subwoofer depends on a variety of factors and uses. The owner is ultimately responsible for
choosing the best amplifier or amplifiers for the application. We recommend choosing an amp that is rated no lessthan continuous
and no higher than program. Please note “Continuous” does not mean “forever”! Most subwoofer manufactures, including Danley
Sound Labs, subscribe to the AES standards for subwoofer power ratings.
3.2 Connecting to the Tapped Horn
Your Danley subwoofer has two NL4 (“speak-on”) connectors located on a panel on the rear of the box. With the exception of
the TH812, TH221, TH412, all TH series subwoofers are wired as passive. The two NL4 connectors are wired parallel.
Pinout: Passive Pinout: Bi-amp
1+ Positive amp 1 1+ Positive amp 1
1 - Negative amp 1 1 -Negative amp 1
2+ Pass Through 2+ Positive amp 2
2 - Pass Through 2 -Negative amp 2

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3.3 Switch Modes for TH812, TH221, TH412, and DBH218
These subwoofers can be run two ways; Bi-amp on two amp channels, or passive on a single amp channel. In passive mode, the
connection on the NL4 input is to pins +1 and -1. In Bi-amp mode connect one amp channel to pins 1+ and 1- of the NL4, and
the other channel to pins 2+ and 2-.
3.4 Impedance
In the biamp mode the average impedance of the woofers will be twice the passive mode.
3.5 Rigging
If you have to ask how, you probably shouldn’t be doing it!
Safety Precautions
Before attempting to rig or suspend your Danley speakers, read and understand the following safety information.

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IMPORTANT RIGGING SAFETY WARNING!
The information in this section has been assembled from recognized engineering data and is intended for informational purposes
only. None of the information in this section should be used without first obtaining competent advice with respect to applicability
to a given circumstance. None of the information presented herein is intended as a representation or warranty on the part of
Danley Sound Labs. Anyone making use of this information assumes all liability arising from such use.
All information presented herein is based upon materials and practices common to North America and may not directly apply to
other countries because of differing material dimensions, specifications, and/or local regulations. Users in other countries should
consult with appropriate engineering and regulatory authorities for specific guidelines.
Correct use of all hardware is required for secure system suspension. Careful calculations should always be performed to ensure
that all components are used within their rated workload before the array is suspended. Never exceed maximum recommended
load ratings.
Before suspending any speaker system always inspect all components (enclosure, rigging frames, pins, etc.) for cracks,
deformations, corrosion, missing, loose or damaged parts that could reduce strength and safety of the array. Do not suspend the
speaker until the proper corrective action has been taken. Use only load- rated hardware when suspending Danley subwoofers.
Are You New to Rigging?
If you are new to rigging, you should do the following:
Know the Rules for Safe Rigging.
Attend a safe rigging seminar, such as that presented by professionals like Rigging Seminars or by Chain Motor Hoist
manufacturers like Columbus McKinnon Corp. (manufacturers of the C/M Lodestar).
Meet and establish a relationship with a licensed mechanical or structural engineer. Get in the habit of asking them questions
instead of guessing about their answers. Learn from what they tell you.
Meet and discuss this aspect of your business with your Insurance Agent.
• Research and understand the codes, practices, and requirements in the venues where you intend to operate your sound system.
General Hardware Information
All Danley subwoofers which are intended to be flown are provided with ⅜inch - #16 hardware. Any hardware used in an
overhead suspension application must be load rated for the intended use. Generally, this type of hardware is available only from
rigging supply houses; industrial supply catalogs and specialized rigging distributors. Local hardware stores do not usually stock
these products.
Attachment to Structures
A licensed Professional Engineer must approve placement and method of attachment to structures prior to installation of any
overhead object. The following performance standards should be provided to the Professional Engineer for design purposes:
Uniform Building Code as applicable, Municipal Building Code as applicable, Seismic Code as applicable. Installation of
hardware and method of attachment must be carried out in the manner specified by the Professional Engineer. Improper
installation may result in damage, injury or death.
Rigging Hardware Inspection & Maintenance
Suspension systems are comprised of mechanical devices and, as such, they require regular inspection and routine maintenance
to insure proper function ability. Danley subwoofers must be inspected for fatigue at least annually. The inspection shall include
a visual survey of all corners and load bearing surfaces for signs of cracking, water damage, de-lamination, or any other condition
that may decrease the strength of the subwoofer enclosure. Accessory rigging hardware provided with or for Danley subwoofers
must be inspected for fatigue at least annually. The inspection shall include a visual material survey for signs of corrosion, bending
or any other condition that may decrease strength of the fastener. For other fittings used, refer to the manufacturer’s inspection
and maintenance guidelines for process.
Danley Sound Labs is not responsible for the application of its products for any purpose or the misuse of this information for any
purpose. Furthermore, Danley Sound Labs is not responsible for the abuse of its products caused by avoiding compliance with
inspection and maintenance procedures or any other abuse. Prior to suspending the system, an expert, trained and experienced

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in flying subwoofer systems should inspect all rigging parts and components.
SECTION 4
Operation
4.1 Acoustic Level Warning
Danley Sound Labs subwoofers can produce sound levels capable of causing permanent hearing damage from prolonged
exposure. The higher the sound level, the less exposure needed to cause such damage. Avoid prolonged exposure to the high
sound levels from the subwoofer. Some Tapped Horns are capable of levels in excess of 140 dBSPL! Levels this high can cause
permanent hearing loss! When operating at these high sound pressure levels the user is strongly encourages to use hearing
protection. Danley Sound Labs accepts no liability for hearing damage from using our subwoofers!
4.2 Operator Responsibility
It is the responsibility of the operator to maintain safe operating levels and to insure that the audience is not harmed by excessive
levels. This is a chart of the recommended exposure limits set by OSHA.
4.3 Aqua Tight Coating
Aqua Tight Coating includes full two layer fiberglass finish for maximum moisture resistance as well as a special polyurea coat
bonded to the fiberglass exterior & two topcoat layers of UV resistant color stabilizer. It also includes all stainless steel exterior
fasteners, an acoustically transparent moisture barrier to the grille, waterproofing the driver cones and sealant for the input plate,
handles or cabinet fixtures. The finish also includes a powder coated stainless steel grille, sealed, waterproof cable leads (12’
length standard), and fully caulked all external joints (except for the “weep” opening at the bottom of the grille).
If a repair is to be made on a loudspeaker with “AT” finish, a few steps must be taken to insure the speaker remains water
resistant in future usage. The caulking must be removed to free the grill and driver access panels. Once the repair is finalized,
the bolts must be coated with silicon and the caulk must be replaced on all panels that have been removed.

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Section 5:
Warranty on Danley Commercial Audio Products
Danley Sound Labs, Inc. (Danley) products are designed and manufactured in the USA with great detail to ensure defect-free
performance. Danley offers the following warranty, which covers product purchased directly from authorized Danley dealers in the United
States and Canada. The warranty covers product which has been installed and operated under normally accepted standards. The warranty on
standard-finish, non-weatherized products is five years against defects in materials and workmanship. The warranty on products in the OS line
carry a five-year warranty against defects in materials and workmanship. Aqua Tight finish (AT) products carry a three-year warranty against
defects in materials and workmanship. Aqua Resistant finish (AR) products carry a three-year warranty against defects in materials and
workmanship. The installation of non-weatherized product in an outdoor area exposed to the elements and/or a corrosive environment will
result in a voided warranty. In order for the warranty to be valid, all outdoor installations and/or installations exposed to the elements or a
corrosive environment must be either the AT finish or “OS” series product.
The standard AT exterior color is “Granite Peak Gray” (Sherwin Williams color code SW6250) and must be used for a full AT warranty. In
specific case-by-case situations, a custom color can be used when agreed upon in writing between Danley and the Danley dealer/end-user. The
use of a custom color on AT products may affect the length of the warranty.
The warranty period starts on the date of purchase from an authorized Danley dealer. In a case where a Danley dealer sells new product from
their existing stock, dated proof of purchase by the end-user (i.e. receipt) will be required.
Coverage: Danley will repair or replace the product and/or defective portion of the product if it becomes defective under normal use and service
during the term of this warranty. Danley is not responsible for any labor costs, fees, or any other costs associated with the repair of a Danley
product incurred by the user.
Repairs may be performed using new or refurbished parts that meet or exceed Danley specifications for new parts. If Danley elects to replace
the product, the replacement may be a reconditioned unit. The buyer will be responsible for any removal or re-installation charges and for any
shipping charges if the product must be shipped for warranty service. However, Danley may pay the return shipping charges provided the
product is still under warranty and the “ship to” destination is in the contiguous United States.
This warranty does not cover damage, deterioration (due to a corrosive environment) or malfunction resulting from accident, negligence, misuse,
abuse, improper installation or operation, repair or attempted repair by someone other than an authorized Danley service tech.
This warranty does not cover any product with altered serial number(s), damage due to power line surge or related electrical abnormalities,
improper grounding, lightning damage and/or acts of God, damage during shipment (claims must be presented to the carrier), theft and/or
vandalism, damage due to the use of non-weatherized (stainless steel or aluminum) or unsealed hardware, and defects resulting from normal
wear and tear. This warranty is “non-transferable” and only covers the original purchaser. To obtain Warranty Service: please contact your
authorized Danley dealer or sound contractor for instructions on warranty claims, or contact Danley directly at 877.419.5805. You may also
email James Taggart at [email protected] and/or the dealer’s Customer Service Representative. A product requiring shipping
should be packed securely either in original packaging or in packaging of similar quality. Shipping method should be the same as was used
when the product was received to help ensure damage doesn’t occur during shipping. Any damages occurred during shipping or due to improper
packaging will not be covered under warranty. No products shipped will be accepted unless prepaid or prior agreement with Danley has been
arranged. All returns must be accompanied by a Return Authorization Number (RMA). If any returned product is found ineligible, the cost of
repairs will be forwarded to the owner, the product will be repaired, and returned to the buyer once payment for repair costs and shipping is
received.
Danley Sound Labs, Inc. reserves the right to change the design of any product from time to time without notice and without obligation to make
or provide for corresponding changes in products previously sold or manufactured.
Section 6:
Contact Information
Danley products are represented & sold through a network of key representatives & approved dealers in the US/Canada/ &
Mexico. International sales and service are handled through our corporate office.
Danley Sound Labs –Corporate Office
2196 Hilton Drive, Suite G, Gainesville, GA. 30501
Phone (770)535‐0204 or (877)419‐5805
Fax (678)928‐4010
Email: [e-mail]