Bose LT MB24 III, LT 4402, LT 9402TM manual LT 9702-III Loudspeaker Product Description

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Acoustical Specifications and Wiring

LT 9702®-III Loudspeaker Product Description

The Bose® Panaray® LT 9702®-III loudspeaker is a mid/high-frequency device designed for shorter throw distances. The LT 9702-III loudspeaker offers an 92º horizontal by 61º vertical dispersion pattern which is the broadest beamwidth of all the LT loudspeakers.

When arrayed correctly, LT 9702-III loudspeakers behave sonically as a large single source of sound energy. This Coherent Wavefront provides full fidelity and even coverage at critical mid- and high-frequencies throughout the coverage area of the array.

Each Panaray LT 9702-III loudspeaker uses two V2 mid-frequency drivers combined with a 1.4" compression driver mounted on a 90˚H x 70˚V constant directivity waveguide.

The LT 9702-III loudspeaker can be operated in a passive or bi-amplified mode.

• In passive mode, the internal passive crossover network is utilized and a single amplified signal is connected to the loudspeaker.

• In bi-amplified mode, the mid-frequency and high-frequency drivers are accessed through separate pins on the Neutrik NL4 connectors.

LT 9702-III speaker with grille

Active equalization for the LT 9702 III loudspeaker can be provided by using the Panaray

 

 

LT 9702-III EQ card or the Panaray system digital controller with presets for each Panaray

 

speaker and combination of speakers. A parametric equalizer can replicate the active

 

equalization curve on the following page, along with a high-pass filter and low pass filter as

 

shown.

LT 9702-III speaker without grille

LT 9702-III speaker rear

LT 9702-III Acoustical Specifications

 

Passive

Bi-Amped

 

 

 

Mid

 

High

Power Handling1

140W

140W

 

75W

 

 

 

 

 

Impedance

8

8

 

8

 

 

 

 

 

Sensitivity2 (at 1W @ 1m)

104 dB SPL

105 dB SPL

 

104 dB SPL

Maximum SPL3

126 dB SPL

127 dB SPL

 

123 dB SPL

(pink noise @1m @ rated power)

 

 

 

 

 

 

 

 

 

 

 

 

Mid Frequency

 

 

Recommended Crossover

 

HPF: 160 Hz, Butterworth, 4th order

 

 

Internal Crossover @ 1.6 kHz

LPF: 1600 Hz, Butterworth, 4th order

 

 

High Frequency

 

 

 

 

 

 

HPF: 1600 Hz, Butterworth, 4th order

 

 

 

LPF: 20 kHz, Butterworth, 4th order

 

Frequency Range4 (± 3 dB)

 

180 Hz - 16 kHz

 

 

 

 

 

 

Beamwidth

 

Horizontal: 92°, Vertical: 61°

 

(-6dB point, average 800 - 5 kHz)

 

 

 

 

 

 

 

 

 

 

 

How our loudspeakers are measured

1. Power Handling

Full bandwidth pink noise, meeting the IEC Standard #268-5, is applied to the loudspeaker and amplified to a level at the loud- speaker terminals corresponding to the power handling of the loudspeaker. The loudspeaker must show no visible damage or mea- surable loss of performance after 100 hours of continuous testing.

2. Sensitivity

Full bandwidth pink noise is applied to the loudspeaker with its active equalization curve and amplified to a level at the loudspeaker terminals corresponding to 1 watt as referenced to the nominal impedance. The average sound pressure level (dB-SPL) is measured at 1 meter from the speaker in an anechoic environment.

3. Maximum SPL

Full bandwidth pink noise is applied to the loudspeaker with its active equalization curve and amplified to a level at the loudspeaker terminals corresponding to the long-term rated power handling of the speaker. The average sound pressure level (dB-SPL) is mea- sured at 1 meter from the speaker in an anechoic environment.

4. Frequency Range

Sine waves are injected into the loudspeaker and the level is adjusted to 1 watt, as referenced to the nominal impedance, and the level measured at 1meter. Resulting graph is smoothed by 0.05 octave-band.

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Contents Bose Panaray LT Series III Loudspeakers Declaration of Conformity Declaration of ConformityContents Safety Information Read the instructionsMounting Guidelines How to Use This Reference Guide Mechanical Specifications LT 3202-III LoudspeakerLT 4402 -III Loudspeaker LT 9402-III Loudspeaker LT 9702-III Loudspeaker LT MB24-III Modular Bass Loudspeaker Recommended Wire Gauges Acoustical Specifications and WiringInternal Configurations Acoustical Specifications and Wiring To reconfigure your LT 3202-III loudspeaker only To reconfigure your LT MB24-III modular bass loudspeaker LT 3202-III Loudspeaker Product Description LT 3202-III Acoustical SpecificationsLT 3202-III Loudspeaker Configurations LT 3202-III Loudspeaker Active Equalization CurvesLT 4402-III Loudspeaker Product Description LT 4402-III Acoustical SpecificationsLT 4402-III Loudspeaker Configurations LT 4402-III Loudspeaker Active Equalization CurvesLT 9402-III Loudspeaker Product Description LT 9402-III Acoustical SpecificationsLT 9402-III Loudspeaker Configurations LT 9402-III Loudspeaker Active Equalization CurvesLT 9702-III Loudspeaker Product Description LT 9702-III Acoustical SpecificationsLT 9702-III Loudspeaker Configurations LT 9702-III Loudspeaker Active Equalization CurvesLT MB24 Loudspeaker Product Description LT MB24-III Acoustical SpecificationsLT MB24-III Loudspeaker Configurations LT MB24-III Loudspeaker Active Equalization CurveLT Series III Mid/High Loudspeakers Active EqualizationOther methods of providing active equalization LT MB24 Modular Bass LoudspeakerService Information Panaray LT Replacement PartsPainting Information Service Information Remove the replacement diaphragm from its carton Service Information To Replace the V-2 Mid-frequency Driver in the Panaray LT Service Information Service Information Driver and Electronics Assembly LT 3202-III LoudspeakerLT 4402-III Loudspeaker LT 9402TM-III Loudspeaker 10 11 12 13 14 15 24 23 22LT 9702-III Loudspeaker LT MB24-III Loudspeaker