Bose Speaker System Bose Panaray Loudspeakers User Guide page

Bose® Panaray® LT Series III Loudspeakers  
Reference Guide  
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Declaration of Conformity  
Declaration of Conformity  
We, the offerer:  
BoseCorporation, The Mountain, Framingham, MA 01701-9168 USA  
acknowledge our sole responsibility, that the product:  
Kind of equipment:  
Type designation:  
Loudspeaker  
®
®
Panaray LT 3202 III Loudspeaker System  
®
Panaray LT 4402 III Loudspeaker System  
TM  
Panaray LT 9402 III Loudspeaker System  
®
Panaray LT 9702 III Loudspeaker System  
Panaray LT MB24 III Modular Bass Loudspeaker System  
in accordance with EMC Directive 89/336/EEC and Article 10(1) of the Directive,  
is in compliance with the following norm(s) or document(s)  
Technical regulations: EN55103-1, EN5103-2  
Accredited by Bose Corporation  
18 June 2004  
Nic Merks  
Bose Products B.V  
Nijverheidstraat 8, 1135 GE Edam  
The Netherlands  
Vice President, Bose Europe  
Manufacturer s authorized EU representative  
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Contents  
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Mounting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
LT 3202®-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
LT 4402®-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
LT 9402™-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
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7
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9
LT 9702®-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
LT MB24-III Modular Bass Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Acoustical Specifications and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Recommended Wire Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Internal Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
To configure your LT 9702-III, LT 9402-III, or LT 4402-III loudspeaker: . . . . . . . . . . . . . . . . . . 13  
To reconfigure your LT 3202-III loudspeaker (only): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
To reconfigure your LT MB24-III modular bass loudspeaker: . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
LT 3202-III Loudspeaker Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
LT 3202-III Acoustical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
LT 3202-III Loudspeaker Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
LT 3202-III Loudspeaker Active Equalization Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
LT 4402-III Loudspeaker Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
LT 4402-III Acoustical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
LT 4402-III Loudspeaker Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
LT 4402-III LoudspeakerActive Equalization Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
LT 9402-III LoudspeakerProduct Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
LT 9402-III Acoustical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
LT 9402-III Loudspeaker Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
LT 9402-III LoudspeakerActive Equalization Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
LT 9702-III LoudspeakerProduct Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
LT 9702-III Acoustical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
LT 9702-III Loudspeaker Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
LT 9702-III LoudspeakerActive Equalization Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
LT MB24 Loudspeaker Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
LT MB24-III Acoustical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
LT MB24-III Loudspeaker Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
Active Equalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
Other methods of providing active equalization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
LT Series III Mid/High Loudspeakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
LT MB24-III Modular Bass Loudspeaker: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
Panaray® LT Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
Painting Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28  
To Replace the t1.4hp High-frequency Compression Driver in the Panaray LT 3202-III,  
LT 4402-III, LT 9404-III or LT 9702-III Loudspeakers . . . . . . . . . . . . . . . . . . . . . . . . . . 29  
To Replace the t1.4hp High-frequency Compression Driver Diaphragm . . . . . . . . . . . . . . . . . . 30  
To Replace the V-2 Mid-frequency Driver in the Panaray LT 3202-III . . . . . . . . . . . . . . . . . . . . 32  
To Replace the V-2 Mid-frequency Driver in the Panaray LT 4402-III,  
LT 9402-III or LT 9702 -IIILoudspeakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33  
To Replace the 12" Woofer in the Panaray LT MB24-III Modular Bass Loudspeaker . . . . . . . . 34  
Driver and Electronics Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35  
LT 3202-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35  
LT 4402-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36  
LT 9402-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37  
LT 9702-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38  
LT MB24-III Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39  
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Safety Information  
Safety Information  
®
®
Please read this safety information before installing, connecting, or operating the Bose Panaray LT loudspeakers.  
Read the instructions.  
Read and keep all safety and operating instructions for future reference, including this manual.  
Follow cautions.  
For your safety, follow all cautions and warnings in this manual and on the units.  
Protect cables.  
Always route cables to avoid pinching or cutting by heavy or sharp objects.  
Follow the mounting guidelines.  
Mount the loudspeaker cabinets according to the instructions in the Mechanical Specifications section of this manual.  
Failure to do so may result in permanent damage to the system components or physical injury to anyone near the system.  
WARNING: This system is capable of supplying extremely high sound pressure levels (SPL).  
WARNING: The rear of the Panaray LT loudspeakers can become very hot during normal use. Do not attempt to service or  
move an LT loudspeaker until the rear of the loudspeaker has cooled. Turn down volume and turn off the power amplifier  
before connecting the loudspeaker.  
WARNING: All Panaray LT loudspeakers require active equalization. Do not operate the loudspeakers without the proper  
active equalization for the particular loudspeaker and operating configuration. Failure to do so may result in permanent  
damage.  
4
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Safety Information  
Mounting Guidelines  
WARNING: The Panaray® LT Series loudspeakers must be attached to brackets or other mounting surfaces for  
permanent or seasonal use. Such mountings, typically in overhead locations, involve risk of personal injury if either  
the mounting system or the loudspeaker attachment fails. Installation of the mounting system must be performed in  
accordance with all applicable building codes including local codes. Consult the local authority before installing this  
product.  
The LT loudspeaker installation requires the use of either Bose® or non-Bose mounting  
products. While Bose Corporation cannot be held responsible for the proper design and  
use of non-Bose mounting systems, we offer the following information and guidelines for  
the permanent installation of your Panaray LT loudspeakers:  
Obtain your mounting system from a reputable manufacturer. Select a system design  
that works for your loudspeaker and its intended use.  
Before using a custom-designed mounting system, have a licensed professional  
engineer review the design and fabrication for structural integrity and safety in the  
intended application.  
The threaded attachment points on the top, bottom, and sides of each loudspeaker  
have an SAE 3/8-16 inch thread with at least 18 usable threads.  
Lock washers or a locking compound intended for hand disassembly (such as  
Loctite 242) should be used for a vibration resistant assembly.  
Use a safety cable, separately attached to the cabinet, at a point not in common with  
the load-bearing attachment points of the mounting system to the loudspeaker. This  
is recommended even if not required by local regulation. If you are unfamiliar with the  
proper design, use, and purpose of a safety cable, consult a licensed professional  
engineer or a rigging professional.  
Additional loudspeakers may be suspended below the Panaray LT loudspeaker  
provided that:  
It employs all 8 threaded-insert hang points on the top and bottom to  
fly and suspend the loudspeakers.  
The total weight of suspended loudspeakers and the Panaray LT  
loudspeaker does not exceed the working load limit (WLL) listed  
below:  
LT 3202®-III Loudspeaker = 395 lb (179 kg)  
LT 4402®-III Loudspeaker = 299 lb (135 kg)  
LT 9702®-III Loudspeaker = 381 lb (173 kg)  
TM  
LT 9402 -III Loudspeaker = 261 lb (118 kg)  
LT MB24-III Loudspeaker = 520 lb (236 kg)  
CAUTION: Use only graded hardware. Fasteners should be SAE Grade 5 or ASTM designation A354, Grade BC  
minimum. Unmarked machine fasteners should not be used for mounting system assembly, as there is no way to  
determine their physical properties. Do not use an M10 fastener; although it is very similar to an SAE 3/8-16,  
they are not interchangeable. M10 washers may be used in place of 3/8-inch washers.  
CAUTION: The fasteners should be tightened using torque not to exceed 50 pounds.inch (5.6 Newton-meters).  
Over-tightening the fastener could result in irreparable damage to the cabinet and create an unsafe assembly.  
CAUTION: The fastener should be long enough to engage no fewer than 16 threads of the attachment point. Using a  
fastener that is too short provides inadequate holding power and may strip the mounting threads, resulting in an unsafe  
assembly. Confirm that at least 16 full threads are engaged in your assembly.  
CAUTION: Do not attempt to alter the threaded attachment points. Do not attempt to re-thread the attachment points to  
accommodate any other thread size or type; doing so will compromise the safety of the installation while permanently  
damaging the loudspeaker.  
5
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How to Use This Reference Guide  
The reference guide is divided into several sections. Below is a listing of each section and a brief description of what is  
contained in each section:  
Mechanical Specifications — This section gives mechanical drawings, dimensions, weights, center of gravity, insert  
locations, and load ratings for each cabinet. This is intended to provide the information necessary for a qualified installer  
to suspend or mount the loudspeakers.  
Acoustic Specifications and Wiring Information — This section provides acoustic specifications for each loudspeaker.,  
and details how to change the configuration of the loudspeakers from passive to bi-amp or bi-amped dual mid-range  
®
mode (3202 III speaker only). There are schematic diagrams of each loudspeaker and recommended amplifier power is  
provided.  
®
Active Equalization — Each Panaray LT Series loudspeaker must have active equalization. This section contains  
information for providing active equalization.  
Service Information — This section provides ordering information for replacement transducers and diaphragm kits.  
Instructions on replacing the transducers and replacing the diaphragm are given. Exploded view assembly drawings are  
given for each loudspeaker. Information on painting the cabinets is provided.  
6
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Mechanical Specifications  
LT 3202®-III Loudspeaker  
Materials and Construction:  
The Panaray® LT 3202-III speaker is a mid/high-frequency loud-  
speaker designed for extremely long throw distances. The LT  
3202-III speaker has the narrowest beamwidth characteristics of  
all the LT cabinets (30˚ H x 20˚ V).  
The LT 3202-III speaker is built with 10-ply marine-grade Baltic  
birch wood. Sixteen threaded stainless steel hang points (4 top, 4  
bottom, and 4 each side) allow for easy rigging with industry-stan-  
dard hardware. It has been manufactured with a textured black fin-  
ish and includes a contoured stainless steel grille. Both cabinet  
and grille can be painted to match the surroundings.  
Dimensions:  
35.9''D x 22.5''W x 42.2''H  
(913 mm x 573 mm x 1072 mm)  
Weight:  
Unpacked: 194 lb (88 kg)  
Packaged: 241 lb (109 kg)  
Load Limits:  
The LT 3202-III loudspeaker has a working load limit (WLL) of 395 lb (179 kg).  
Hardware:  
• Use only graded hardware.  
• Fasteners should be SAE Grade 5 or ASTM designation A354, Grade BC minimum.  
• Unmarked machine fasteners should not be used for mounting system assembly, as there is no way to  
determine their physical properties.  
• Do not use an M10 fastener; although it is very similar to an SAE 3/8-16, they are not interchangeable. M10  
washers may be used in place of 3/8-inch washers.  
Safety and Regulatory Compliance:  
This loudspeaker complies with ANSI/EIA-636 “Recommended Loudspeaker Safety Practices” and with EU EMC  
Directives 89/336/EEC for CE marking.  
7
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Mechanical Specifications  
LT 4402® -III Loudspeaker  
Materials and Construction:  
The Panaray® LT 4402-III speaker is a mid/high-frequency loud-  
speaker designed for medium-to-long throw distances. The LT  
4402-III speaker features a tightly controlled 40˚H x 40˚V beam-  
width.  
The LT 4402-III speaker is built with 10-ply marine-grade Baltic  
birch wood. Sixteen threaded stainless steel hang points (4 top, 4  
bottom, and 4 each side) allow for easy rigging with industry-stan-  
dard hardware. It has been manufactured with a textured black  
finish and includes a contoured stainless steel grille. Both cabinet  
and grille can be painted to match the surroundings.  
Dimensions:  
24’’H x 18.5’’W x 34’’W  
(610 mm x 471 mm x 884 mm)  
Weight:  
Unpacked: 111 lb (50 kg)  
Packaged: 142 lb (64 kg)  
Load Limits:  
The LT 4402-III loudspeaker has a working load limit (WLL) of 299 lb (135 kg).  
Hardware:  
• Use only graded hardware.  
• Fasteners should be SAE Grade 5 or ASTM designation A354, Grade BC minimum.  
• Unmarked machine fasteners should not be used for mounting system assembly, as there is no way to  
determine their physical properties.  
• Do not use an M10 fastener; although it is very similar to an SAE 3/8-16, they are not interchangeable. M10 washers  
may be used in place of 3/8-inch washers.  
Safety and Regulatory Compliance:  
This loudspeaker complies with ANSI/EIA-636 “Recommended Loudspeaker Safety Practices” and with EU EMC Directives  
89/336/EEC for CE marking.  
8
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Mechanical Specifications  
LT 9402™-III Loudspeaker  
Materials and Construction:  
The Panaray® LT 9402-III speaker is a mid/high-frequency loud-  
speaker designed for medium-to-long throw distances. The LT  
9402-III speaker features a tightly controlled 90˚H x 40˚V beam-  
width.  
The LT 9402-III speaker is built with 10-ply marine-grade Baltic  
birch wood. Sixteen threaded stainless steel hang points (4 top,  
4 bottom, and 4 each side) allow for easy rigging with industry-  
standard hardware. It has been manufactured with a textured  
black finish and includes a contoured stainless steel grille. Both  
cabinet and grille can be painted to match the surroundings.  
Dimensions:  
23.7’’D x 22.5’’W x 34.6’’H  
(604 mm x 572 mm x 879 mm)  
Weight:  
Unpacked: 113 lb (51 kg)  
Packaged: 146 lb (66 kg)  
Load Limits:  
The LT 9402-III loudspeaker has a working load limit (WLL) of 261 lb (118 kg).  
Hardware:  
• Use only graded hardware.  
• Fasteners should be SAE Grade 5 or ASTM designation A354, Grade BC minimum.  
• Unmarked machine fasteners should not be used for mounting system assembly, as there is no way to  
determine their physical properties.  
• Do not use an M10 fastener; although it is very similar to an SAE 3/8-16, they are not interchangeable. M10  
washers may be used in place of 3/8-inch washers.  
Safety and Regulatory Compliance:  
This loudspeaker complies with ANSI/EIA-636 “Recommended Loudspeaker Safety Practices” and with EU EMC  
Directives 89/336/EEC for CE marking.  
9
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Mechanical Specifications  
LT 9702®-III Loudspeaker  
Materials and Construction:  
The Panaray® LT 9702-III speaker is a mid/high-frequency  
loudspeaker designed for shorter throw distances. The LT  
9702-III speaker offers a 90˚H x 70˚V pattern which is the  
broadest beamwidth of all the LT loudspeakers.  
The LT 9702-III speaker is built with 10-ply marine-grade Baltic  
birch wood. Sixteen threaded stainless steel hang points (4  
top, 4 bottom, and 4 on each side) allow for easy rigging with  
industry-standard hardware. It has been manufactured with a  
textured black finish and contoured stainless steel grille. Both  
cabinet and grille can be painted to match the surroundings.  
Dimensions:  
14.5’’D x 22.5’’W x 34.6’’H  
(368 mm x 572 mm x 879 mm)  
Weight:  
Unpacked: 96 lb (43 kg)  
Packaged: 124 lb (56 kg)  
Load Limits:  
The LT 9702-III loudspeaker has a working load limit (WLL) of 381 lb (173 kg).  
Hardware:  
• Use only graded hardware.  
• Fasteners should be SAE Grade 5 or ASTM designation A354, Grade BC minimum.  
• Unmarked machine fasteners should not be used for mounting system assembly, as there is no way to  
determine their physical properties.  
• Do not use an M10 fastener; although it is very similar to an SAE 3/8-16, they are not interchangeable. M10 washers  
may be used in place of 3/8-inch washers.  
Safety and Regulatory Compliance:  
This loudspeaker complies with ANSI/EIA-636 “Recommended Loudspeaker Safety Practices” and with EU EMC Directives  
89/336/EEC for CE marking.  
10  
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Mechanical Specifications  
LT MB24-III Modular Bass Loudspeaker  
Materials and Construction:  
The Panaray® LT MB24-III speaker is a compact, low-frequency  
loudspeaker designed exclusively for use with the Panaray LT  
mid/high loudspeaker family.  
The LT MB24-III speaker is built with 10-ply marine-grade Baltic  
birch wood. Sixteen threaded stainless steel hang points (4 top,  
4 bottom and 4 each side) allow for easy rigging with industry-  
standard components. It has been manufactured with a black  
textured finish and a contoured stainless steel grille. Both the  
cabinet and the grille can be painted to match the surroundings.  
Dimensions:  
25.5’’D x 20’’W x 28.1’’H  
646 mm x 508 mm x 712 mm)  
Weight:  
Unpacked: 130 lb (59.19 kg)  
Packaged: 147 lb (66.9 kg)  
Load Limits:  
The LT MB24 modular bass loudspeaker has a working load limit (WLL) of 520 lb (236 kg).  
Hardware:  
• Use only graded hardware.  
• Fasteners should be SAE Grade 5 or ASTM designation A354, Grade BC minimum.  
• Unmarked machine fasteners should not be used for mounting system assembly, as there is no way to  
determine their physical properties.  
• Do not use an M10 fastener; although it is very similar to an SAE 3/8-16, they are not interchangeable.  
M10 washers may be used in place of 3/8-inch washers.  
Safety and Regulatory Compliance:  
This loudspeaker complies with ANSI/EIA-636 “Recommended Loudspeaker Safety Practices” and with EU  
EMC Directives 89/336/EEC for CE marking.  
11  
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Acoustical Specifications and Wiring  
Recommended Wire Gauges  
The loudspeakers should be connected to the amplifier outputs with heavy-gauge wire. To minimize power loss, larger  
diameter wire should be used for longer lengths. The following chart can be used as a guide.  
Length of Wire  
25 feet  
Wire Gauge  
16  
14  
12  
10  
8
40 feet  
60 feet  
100 feet  
150 feet  
Note: All wiring shall conform to applicable local and/or national electrical codes.  
Verify that the polarity of the amplifier outputs are connected properly to the loudspeaker.  
Internal Configurations  
All Panaray® loudspeakers ship with a selectable internal crossover.  
Each speaker ships in the passive position, but you can change the configuration from passive to bi-amped or bi-amped  
dual mid-range (LT 3202®-III only).  
• In passive mode — the internal passive crossover network is utilized, and a single amplified signal is connected to the  
loudspeaker. This requires only one set of input connections and one amplifier channel.  
• In bi-amplified mode — the mid-frequency and high-frequency drivers are accessed through separate pins on the NL8  
connector. Two sets of connections and two amplifier channels are required. Bi-amplified mode allows additional control  
of the balance between the mid-frequency and high-frequency levels.  
• In bi-amplified dual mid-range mode — the mid-frequency and high-frequency drivers are accessed through separate  
pins on the NL8 connectors. Three sets of connections and three amplifier channels are required. Bi-amplified dual mid-  
range allows independent control of two sets of V2 mid-frequency drivers as well as control of the high-frequency driver.  
Note: There are no passive components in line when bi-amp or bi-amp dual mid-range configurations are selected.  
All Panaray LT loudspeakers require active equalization. Do not operate the loudspeakers without the proper active  
equalization for the particular loudspeaker and operating configuration. Failure to do so may result in permanent damage  
to the loudspeaker.  
See the Active Equalization section for more details.  
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Acoustical Specifications and Wiring  
To configure your LT 9702®-III, LT 9402-III, or LT 4402®-III loudspeaker:  
1. Turn off amplifier power and disconnect the loudspeaker input connection.  
Remove the rear connector plate.  
2. Remove connector from the passive position.  
3. Insert in the bi-amped position.  
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Acoustical Specifications and Wiring  
To reconfigure your LT 3202®-III loudspeaker (only):  
1. Turn off amplifier power and disconnect the loudspeaker input connection.  
Remove the rear panel.  
2. Pull out the connector from the passive position.  
3. Insert in the bi-amped position.  
4. Or insert in the bi-amped dual mid-range position.  
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