Lowell LUH-15TA Manual

Lowell Ikke kategoriseret LUH-15TA

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Side 1/4

MODEL SELECTION

ACCESSORIES

More information and spec sheets can be found online at www.lowellmfg.com

I-LUH (Rev. 9/30/19): Instructions for Unihorn™ Models LUH-15TA and LUH-15TX

The Unihorn® is a re-entrant horn engineered for general voice communications systems. While all Unihorn models feature cast aluminum

housing suitable for indoor or outdoor applications when mounted exposed (without an accessory backbox), note that some accessories

are not suitable for outdoor use.

Model LUH-15TA offers the greatest exibility for 25V, 70V, 100V, or 8 ohm applications, as it includes a

press-t mesh grille and trim ring that can be mounted or not, according to the needs of the project. The grille

adds a nished look, while protecting the front of horn from nesting birds and insects. The housing features

mounting dogs for quick installation.

LUH-15TA includes:

• 15W driver with transformer

and tap selector

• Cast aluminum housing

with mounting dogs

• Press-t mesh grille

with trim ring

Location Application Accessories (required) Accessories (optional)

Indoor • Exposed • LUH-BRKT (bracket) or custom rigging hardware • LUH-VRG (grille)

• Recessed (existing drywall) ---------------- • LUH-VRG (grille)

• Recessed (before drywall is installed) • LUH-RIB (rough-in bridge) • LUH-VRG (grille)

• Recessed (drop tile ceiling) • LUH-TBAR (t-bridge) • LUH-VRG (grille)

• Recessed (masonry) • LUH-BOX-INT (backbox) & LUH-TP (trim plate) • LUH-VRG (grille)

• Surface-mount • LUH-BOX-INT (backbox) • LUH-VRG (grille)

Outdoor • Exposed • LUH-BRKT (U-bracket) or custom rigging hardware • LUH-VRG (grille)

• Recessed (masonry) • LUH-BOX (backbox) & LUH-TP (trim plate) • LUH-VRG (grille)

• Surface-mount • LUH-BOX (backbox) • LUH-VRG (grille)

Model LUH-15TX is the economical choice for 25V, 70V, or 100V applications that do not require a press-t

grille, trim ring, or mounting dogs.

NOTE: Unihorn Models LUH-15TA and LUH-15TX may be mounted to most industry standard 8" speaker

grilles. That will not void the UL Listing.

Location Application Accessories (required) Accessories (optional)

Indoor • Exposed • LUH-BRKT (U-bracket) or custom rigging hardware • LUH-VRG (grille)

• Recessed (existing drywall) • SQLK-8L (grille) & P875X-4 or P875X-6 (backbox) • SS Series (support rails)

• Recessed (before drywall is installed) • SQLK-8L (grille) & P875X-4 or P875X-6 (backbox) • SS Series (support rails)

• Recessed (masonry) • SQLK-8L (grille) & P875X-4 or P875X-6 (backbox) ----------------

• Surface-mount • SQLK-8L (grille) & CB84 or CB86-6 (backbox) ----------------

Outdoor • Exposed • LUH-BRKT (bracket) or custom rigging hardware • LUH-VRG (grille)

LUH-15TX includes:

• 15W driver with transformer

and tap selector

• Cast aluminum housing

LUH-VRG

vandal-resistant grille

cast aluminum

indoor / outdoor

LUH-BOX-INT

recessed or surface box

cold rolled steel

indoor only

LUH-BOX

recessed or surface box

stainless steel

indoor / outdoor

LUH-RIB

rough-in bridge

steel

indoor only

LUH-TBAR

tile bridge

galvanized steel

indoor only

LUH-TP

trim plate

aluminum

indoor / outdoor

LUH-BRKT

aluminum U-bracket &

stainless steel hardware

indoor / outdoor

SQLK-8L

vandal-resistant security grille

cast aluminum

indoor only

P875X-4

4"D recessed box

cold rolled steel

indoor only

CB84

4"D surface box

cold rolled steel

indoor only

CB86-6

6"D surface box

cold rolled steel

indoor only

P875X-6

6"D recessed box

cold rolled steel

indoor only

Model LUH-15TA

EXPOSED:

• Open Architecture (with installer-furnished hardware): Use the two threaded 1/4–20 mounting posts (on

back of horn) to mount the horn with 1/4-20 threaded rods or bolts, or custom rigging hardware. Tighten the

three dog ears to clamp the horn to the trim ring. Press the mesh grille into the ring to t securely in place.

• Ceiling or Wall (with LUH-BRKT bracket): Mount the bracket to the surface. Then place the back of the horn

through the trim ring and use the two threaded 1/4–20 mounting posts (on back of horn) to mount the horn to

the bracket. Tighten the three dog ears to clamp the horn to the trim ring. Press the mesh grille into the ring to

t securely in place.

RECESSED: Before mounting the horn in recessed applications, be sure to check for obstructions behind the

ceiling or wall. For more information, see the technical paper online at https://www.lowellmfg.com/wp-content/

uploads/Checking_above_the_ceiling_before_you_cut.pdf

• Existing Drywall: Use the inside of the trim ring to trace a 7.25" diameter mounting hole in the ceiling (or

wall). Cut the hole. Place the back of the horn through the trim ring and into the mounting hole, aligning tapped

holes on the ring with those in the lip of the horn. Holding the horn ush against the ceiling (or wall), tighten the

three mounting dogs to clamp the horn to the ring. Press the mesh grille into the ring to t securely in place.

• Drop Tile Ceiling (with LUH-TBAR tile bridge): The tile-bridge distributes the weight of the speaker to the

ceiling grid, which will help prevent sagging. Begin by removing the ceiling tile and placing the bridge on the

back of the tile to mark where the mounting hole should be cut. Cut the 7.25" mounting hole, then replace the

tile in the ceiling grid with the bridge sitting on top of it. Place the back of the horn through the trim ring and

into the mounting hole. Holding the horn ush against ceiling tile, tighten the three dog ears on the back of the

horn to clamp it to the trim ring, tile and bridge. Press the mesh grille into the ring to t securely in place.

• New Construction

— Before Drywall is Installed (with LUH-RIB rough-in bridge): Reserve space for the horn by mounting

a rough-in bridge to the framing, positioning the bridge so the return lip protrudes into the room. The

drywaller uses the lip as a guide to trace the mounting hole. Be sure to install wiring so it can be accessed

when drywall is in place. After drywall is installed and painted, mount the horn by placing the back of it

through the trim ring and into the mounting hole. Holding the horn ush to the ceiling (or wall), tighten the

horn's three dog ears to clamp it to the bridge and trim ring. Then press the mesh grille into the ring so it

ts securely in place.

— Exterior Masonry (with LUH-BOX backbox and LUH-TP trim plate): Run speaker wire into the backbox,

then mount the box in the wall using mortar to hold it in place. After the mortar dries, mount the trim plate

to the front of the backbox using four 8-32 screws (provided). The trim plate is larger than the backbox so

it will cover rough mortar edges. Place the back of horn through the trim ring and into the box. Tighten the

three dog ears to clamp the horn to the backbox and ring. Press the mesh grille into the ring to t securely

in place.

— Interior Masonry (with LUH-BOX-INT backbox): Run speaker wire into the backbox, then mount the

box in the wall using mortar to hold it in place. After the mortar dries, mount the trim plate to the front of the

backbox using four 8-32 screws (provided). The trim plate is larger than the backbox so it will cover rough

mortar edges. Place the back of horn through the trim ring and into the box. Tighten the three dog ears to

clamp the horn to the backbox and ring. Press the mesh grille into the ring to t securely in place.

SURFACE-MOUNT:

• Exterior Surface (with LUH-BOX backbox): Run speaker wire into backbox, then mount backbox to surface.

Place back of horn through trim ring and into backbox. Tighten three dog ears to clamp horn to backbox and

trim ring. Press the ne mesh grille into the trim ring so it ts securely in place.

• Interior Surface (with LUH-BOX-INT backbox): Run speaker wire into backbox, then mount backbox to

surface. Place back of horn through trim ring and into backbox. Tighten three dog ears to clamp horn to

backbox and trim ring. Press the ne mesh grille into the trim ring so it ts securely in place.

Recessed in drywall

Exposed (with U-bracket)

Recessed in drop tile

ceiling (with t-bridge)

Recessed before drywall

installed (with rough-in bridge)

Recessed in masonry

(with backbox & trim plate)

Surface-mount

(with backbox)

INSTALLATION

WARNING!Speakerinstallationshouldonlybeperformedbyqualiedprofessionalswithexperienceandknowledgeofload-ratedhardware,andsafeinstallationmounting

andriggingtechniques.Improperlyinstalledequipmentcanresultinpropertydamage,personalinjuryordeath,and/orliabilitytotheinstallingcontractor.Thespeakersystem

mustbemountedinaccordancewithalllocal,state,andfederalcodesandregulations,andtheinstallationmustconformtoindustrystandardpractices.Itistheresponsibility

oftheinstallertoproperlyselectallhardwareforriggingandinstallation,safetyandrestraintcables,andtoconsultalicensedmechanicalorstructuralengineertoevaluate

andcertifythestructuralintegrityandsafetyofanymountingmethodanditssuitabilityforthebuildingstructure.LowellManufacturingCompany,itsafliates,employees,

and/orindependentsalesrepresentatives,arenotresponsiblefortheuse,misuse,misapplication,orunsafeinstallationofanyhornorspeakersystem.

NOTE: To determine speaker spacing, see the technical paper “Distributed System Speaker Spacing for the Integrator” at LowellMfg.com. An online spacing

calculator is also available.