LT 4402® WR

LT 4402 WR

Recommended retail price

Overview

Large-format waveguide and narrow 40° x 40° pattern designed for use with other LT loudspeakers to form Coherent Zone arrays in medium to large permanent installations requiring precise coverage and high intelligibility.

For indoor and outdoor applications.
 

Features

40° x 40° coverage for long-throw applications in stadiums and arenas (the only large-format waveguide currently available with 40° x 40° pattern)

Mid/high-frequency loudspeaker designed for use in arrays with separate LF augmentation (Bose® MB12 or MB24 bass arrays) or voice-only applications

Bose V2 midrange manifold sums output of 2 x 4.5" (114 mm) extended-range cone drivers for lower breakup distortion and improved transient response. Provides a smoother, more natural vocal range compared to single 8" to 12" woofers. The LT 4402 WR loudspeaker utilizes two Bose V2 midrange manifolds

Bose coherent zone waveguide provides effective 40° x 40° pattern control to approximately 1 kHz. Minimizes loudspeaker overlap in arrays to reduce comb-filter interference and improve intelligibility

Applications

  • Stadiums
  • Arenas
  • Houses of worship
  • Auditoriums
  • Performing arts venues
  • Outdoor event venues

Specs

Technical Summary

Frequency Response (+/-3 dB)
180 Hz - 16 kHz

Frequency Range (-10 dB)
150 Hz - 18 kHz

Nominal Dispersion
40° H x 40° V

Sensitivity (SPL / 1 W @ 1 m)
108 dB SPL

Maximum SPL @ 1 m
129 dB SPL (135 dB SPL peak)

Long-Term Power Handling
140 W (560 W peak)

Nominal Impedance
8 Ω

Mechanical Diagrams

Front View

Top View

Side View

Product Codes

Black
323110-0110

Accessories

Rigging Hardware

Mounting and rigging accessories for LT loudspeakers are manufactured and distributed by ATM Fly-Ware®, a division of Adaptive Technologies Group, Inc. Qualified contractors and dealers may purchase rigging hardware directly from ATM:

Adaptive Technologies Group
1635 E. Burnett Street 
Signal Hill, CA 90755 USA 
Telephone: 562-424-1100 
www.adapttechgroup.com

Recommendations for several typical LT array configurations (indoor applications only) using stock ATM Fly-Ware® parts can be found in the array application guide for the Bose® LT loudspeaker family.

FAQs

What are the major changes to the LT product family with the introduction of the new WR models?

  • The Bose LT 3202, LT 4402, LT 9402 and LT 9702 (Series III) loudspeakers have been discontinued and replaced with the new LT 3202 WR, LT 4402 WR, LT 9402 WR and LT 9702 WR models, with improved resistance to outdoor weather elements
  • New MB12 WR and MB24 WR modular bass loudspeakers feature the weather-resistant finish of the "02" models. The current MB12 and MB24 (non-WR) loudspeakers will remain in the line
  • All new WR models are available in black only
  • LT 6400, LT 9400, LT 6403 and LT 9403 loudspeakers continue to be rated for indoor-only applications, and remain unchanged
  • The LT 6400, LT 9400, LT 6403 and LT 9403 loudspeakers will be available in white as special order
  • The LT3202 WR loudspeaker will be available in black as special order
     

Did the acoustic performance or specifications of the new LT loudspeakers change compared to those of the previous Series III models?

No. Acoustic performance remains unchanged.

What are the changes in the new WR models that increase resistance to weather elements?

  • The exterior finish is upgraded to a 2-part spray polyurethane coating (Chemthane 7030) that is similar to spray-on truck cargo-bed liners. This material is significantly more scratch and weather resistant than the previous LT loudspeaker finish (and competitor spray-on finishes)
  • The enclosure interior now features a full polyurethane sealant coating
  • A new molded insert for the V2 Midrange Manifold compartment provides additional water protection
  • The input panel and crossover board have been re-located to a weather-sealed section of enclosure, with a new gasket on the access panel
  • A new open-cell foam backing on the stainless steel grille provides additional protection from wind-driven rain and dust

What is the weather resistance IP rating for the new WR models?

The open-cell foam behind the stainless steel grille provides excellent protection from wind-driven rain and dust. Several manufacturers signify resistance to dust with a “5” rating in first-digit, solid object IP rating. Technically, an enclosure must provide protection from a solid-object wire of 1 millimeter (0.03937 inches) in diameter, in addition to protection against dust, to qualify for the “5” solid-object IP rating. As the grille perforations of the LT product family loudspeakers will not protect against ingress of solid objects of 1 mm, we have elected not to specify the first digit for the IP rating. However, we are confident that the WR models will provide adequate protection against wind-driven dust and rain.

Why did you specify an "X" (not rated) for the solid ingress digit of the IP rating?

The open-cell foam behind the stainless steel grille provides excellent protection from wind-driven rain and dust. Several manufacturers signify resistance to dust with a “5” rating in first-digit, solid object IP rating. Technically, an enclosure must provide protection from a solid-object wire of 1 millimeter (0.03937 inches) in diameter, in addition to protection against dust, to qualify for the “5” solid-object IP rating. As the grille perforations of the LT product family loudspeakers will not protect against ingress of solid objects of 1 mm, we have elected not to specify the first digit for the IP rating. However, we are confident that the WR models will provide adequate protection against wind-driven dust and rain.

Some of the previous LT Series III loudspeakers were rated "Outdoor Under Cover." Can I use the new WR models outdoors in full direct-exposure applications?

Yes.

What are the recommended guidelines when installing LT WR loudspeakers outdoors?

  • Mount LT WR loudspeaker vertically
  • Mount loudspeaker with a downward tilt of a minimum of 3 to 5 degrees
  • Cover any unused input connector with the provided rubber boot
  • Immediately repair any cuts, scratches or breaches of the exterior finish. Once the exterior finish is breached, moisture will eventually permeate the plywood and jeopardize the structural integrity of the enclosure. Thus, it is imperative that any exterior finish breaches be re-sealed immediately
  • All external mounting and rigging hardware must be properly treated for the intended outdoor environment. Always consult a qualified rigging consultant and/or supplier of rigging hardware
  • All loudspeakers and rigging should be inspected regularly (at least once per year) by qualified personnel with knowledge of local codes and requirements

What are the temperature range limitations for outdoor installations of LT WR loudspeakers?

Loudspeakers in the LT product family undergo extensive quality assurance and reliability testing. They are tested for normal operation at temperatures ranging from 70° C to -20° C (158 ºF to -13 ºF), and for transportation and storage to survive temperatures ranging from 70° C to -40° C (158 ºF to -40 ºF).
 

Are there any outdoor environments in which the LT WR loudspeakers should not be installed?

We do not recommend outdoor installations near marine (ocean) environments due to the corrosive nature of seawater spray and humidity. Although conditions vary greatly, typically the recommendation would extend to within approximately ½ mile (0.8 km) of  the oceanfront.

Does Bose sell any mounting or rigging accessories for the LT product family?

Does Bose sell any mounting or rigging accessories for the LT product family?

No. However, we have developed recommendations for rigging several typical array configurations (indoor applications only) using stock parts manufactured and distributed by ATM Fly-ware, a division of Adaptive Technologies Group, Inc. These recommendations can be found in the array application guide for the Bose LT loudspeakers. Qualified contractors and dealers may purchase rigging hardware directly from ATM:

Adaptive Technologies Group
1635 E. Burnett Street
Signal Hill, CA 90755 USA
Telephone: 562-424-1100
www.adapttechgroup.com
 

Did the recommended EQ and crossover settings change for any of the new loudspeakers in the LT product family?

No. The recommended EQ and crossover settings are unchanged compared to the Series III versions.

How do I get the recommended EQ and crossover settings for loudspeakers in the LT product family?

The Bose ControlSpace ESP-88 engineered sound processor has presets for the LT product family. You may also download recommended crossover and parametric EQ values for use with DSP units not manufactured by Bose. Please refer to the ControlSpace loudspeaker EQ database for the recommended EQ download.
 

What is the factory warranty for LT loudspeakers?

The factory warranty for all Bose professional loudspeakers includes coverage for 5 years on acoustic components and 2 years for cosmetic defects. Some exclusions may apply. Please refer to the product warranty for complete warranty terms and conditions.
 

Can I paint the LT loudspeakers a different color?

Yes, loudspeakers in the LT product family can be painted by the contractor using solvent-based spray paint, including many formulations from the KRYLON brand. Several precautions must be taken before painting the enclosures, such as removing the grille and foam backing. For additional details on re-painting LT loudspeakers, please contact your local Bose Professional representative.

Are all loudspeakers in the LT product family stocked in regular inventory?

Certain LT loudspeakers are not stocked in regular inventory and are available only as special-order items. Please contact your local Bose Professional representative to confirm order-to-shipping lead times for the following models:

SKU: 323102-0110:
Description: 3202® LOUDSPEAKER, WR BLK
Rating: Weather-rated

SKU: 40183
Description: LT9403 WHITE ROHS
Rating: Indoor only

SKU: 40181
Description: LT6403 WHITE ROHS
Rating: Indoor only

SKU: 40187
Description: LT9400MH WHITE ROHS
Rating: Indoor only

SKU: 40185
Description: LT6400MH WHITE ROHS
Rating: Indoor only