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Bose LT Series III Acoustical Specifications and Wiring, Recommended Wire Gauges, Length of Wire

Models: LT Series III Bose Panaray Loudspeakers

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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	Wire Gauge

25 feet	16

40 feet	14

60 feet	12

100 feet	10

150 feet	8

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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Bose LT Series III Acoustical Specifications and Wiring, Recommended Wire Gauges, Internal Conﬁgurations, Length of Wire

Contents

Bose Panaray LT Series III Loudspeakers Reference GuideDeclaration of Conformity Declaration of ConformityContents Safety Information Safety Information Read the instructionsFollow cautions Protect cablesSafety Information Mounting GuidelinesHow to Use This Reference Guide Mechanical Specifications LT 3202-IIILoudspeakerDimensions WeightLT 4402 -IIILoudspeaker Mechanical SpecificationsDimensions WeightLT 9402-IIILoudspeaker Mechanical SpecificationsDimensions WeightLT 9702-IIILoudspeaker Mechanical SpecificationsDimensions WeightLT MB24-IIIModular Bass Loudspeaker Mechanical SpecificationsDimensions WeightAcoustical Specifications and Wiring Recommended Wire GaugesInternal Conﬁgurations Length of WireAcoustical Speciﬁcations and Wiring 2.Remove connector from the passive position3.Insert in the bi-ampedposition To reconﬁgure your LT 3202-IIIloudspeaker only Acoustical Speciﬁcations and Wiring3.Insert in the bi-ampedposition 4.Or insert in the bi-ampeddual mid-rangepositionAcoustical Speciﬁcations and Wiring LT 3202-IIILoudspeaker Product Description LT 3202-IIIAcoustical SpeciﬁcationsAcoustical Speciﬁcations and Wiring LT 3202-IIILoudspeaker Conﬁgurations LT 3202-IIILoudspeaker Active Equalization CurvesAcoustical Speciﬁcations and Wiring PassiveLT 4402-IIILoudspeaker Product Description LT 4402-IIIAcoustical SpeciﬁcationsAcoustical Speciﬁcations and Wiring LT 4402-IIILoudspeaker Conﬁgurations LT 4402-IIILoudspeaker Active Equalization CurvesAcoustical Speciﬁcations and Wiring PassiveLT 9402-IIILoudspeaker Product Description LT 9402-IIIAcoustical SpeciﬁcationsAcoustical Speciﬁcations and Wiring LT 9402-IIILoudspeaker Conﬁgurations LT 9402-IIILoudspeaker Active Equalization CurvesAcoustical Speciﬁcations and Wiring PassiveLT 9702-IIILoudspeaker Product Description LT 9702-IIIAcoustical SpeciﬁcationsAcoustical Speciﬁcations and Wiring LT 9702-IIILoudspeaker Conﬁgurations LT 9702-IIILoudspeaker Active Equalization CurvesAcoustical Speciﬁcations and Wiring PassiveLT MB24 Loudspeaker Product Description LT MB24-IIIAcoustical SpeciﬁcationsAcoustical Speciﬁcations and Wiring LT MB24-IIILoudspeaker Conﬁgurations LT MB24-IIILoudspeaker Active Equalization CurveAcoustical Speciﬁcations and Wiring ParallelActive Equalization Other methods of providing active equalizationLT Series III Mid/High Loudspeakers LT MB24 Modular Bass LoudspeakerService Information Panaray LT Replacement PartsReplacement part ProductPainting Information Service InformationService Information CAUTION The rear of the Panaray LT loudspeakers can become extremely HOT during normal use. Do not attempt to service the loudspeakers until they have cooled to room temperatureService Information Note Set it down so that the coil is facing upService Information Service Information CAUTION The rear of the Panaray LT loudspeakers can become extremely HOT during normal use. Do not attempt to service the loudspeakers until they have cooled to room temperatureService Information Service Information 1.Turn off ampliﬁer powerDriver and Electronics Assembly LT 3202-IIILoudspeakerService Information LT 4402-IIILoudspeaker Service InformationLT 9402TM-IIILoudspeaker Service Information1 8 9 10 11 12 13 14 15 1 2 3 17 4 18 5 LT 9702-IIILoudspeaker Service InformationLT MB24-IIILoudspeaker Service Information