User's Manual

ManualsBrandsLowell Manufacturing ManualsBrackets & Mounting KitsUnihorn Horn-Universal Mount-15W, 70/25/100V General Signaling

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

Summary of content (4 pages)

PAGE 1
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.
PAGE 2
INSTALLATION ARNING! Speaker installation should only be performed by qualified professionals with experience and knowledge of load-rated hardware, and safe installation mounting W and rigging techniques. Improperly installed equipment can result in property damage, personal injury or death, and/or liability to the installing contractor.
PAGE 3
Model LUH-15TX EXPOSED • Open Architecture (with installer-furnished hardware): Use the two threaded 1/4–20 mounting posts on back of horn to mount horn using 1/4-20 threaded rods or bolts, or custom rigging hardware. • Ceiling or Wall (with LUH-BRKT bracket): Mount bracket to surface. Use the two threaded 1/4–20 mounting posts on back of horn to mount the horn to bracket. RECESSED Before mounting the horn in recessed applications, be sure to check for obstructions behind the ceiling or wall.
PAGE 4
HORN SPECIFICATIONS Model No. Power Rating (per EIA standard RS 426-B) Frequency Response Sensitivity (using 70V inputs) Calculated Max. SPL (based on power rating & measured sensitivity) Conical Dispersion Input Impedance (nominal) Transformer Power Taps Voltage Input *Measured in Lowell audio lab. **UL measured A weighted reverberant room sound power output. ***3dB increment rating with a sweep sine-wave signal source flat weight SPL meter.