JBL Professional 8340A

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High Power Cinema Surround Speaker for Digital Applications

45 Hz to 18 kHz Frequency Range
High Sensitivity, 96 dB SPL, 1 W, 1 m (3.3 ft)
High Power Handling Capability: 250 watts continuous pink noise
Convenient mounting design uses JBL QuickMountTM, Omnimount® or APC Multimount brackets
Special cabinet shape incorporates 20° angled front baffle
SMPTE/ISO2969 Curve X high frequency de-emphasis
Lightweight, rigid molded enclosure
Input terminals located on top of cabinet for quick access
Uniform horizontal and vertical coverage
Approved by Lucasfilm, Ltd. for THX® installations

Data Sheets

	Size	Uploaded
2516 Quick-Mount® Fixed-Angle Bracket for 8330A and 8340A updated: Oct 2019	88.6 KB	Oct 2019
2516 Quick-Mount Fixed-Angle Bracket for JBL 8320, 8340A and 8350 Loudspeakers updated: Oct 2019	697 KB	Oct 2019

Compliances

	Size	Uploaded
Cinema Sound 9400 Series - EU Declaration of Conformity updated: Oct 2019	277 KB	Oct 2019
Cinema Sound - Surround Systems Declaration of Conformity updated: Oct 2019	86.1 KB	Oct 2019

Tech Notes

	Size	Uploaded
Tech Note: Polarity Conventions updated: Oct 2019	55 KB	Oct 2019

Simulation Data

	Size	Uploaded
Ease SPK/DLL Files - Full JBL Pro Line updated: May 2024	21 MB	May 2024

Owner's Manuals

	Size	Uploaded
8340A Information updated: Oct 2020	336 KB	Oct 2020

Information Documents

	Size	Uploaded
JBL Digital Surround Series Cinema Loudspeakers updated: Oct 2019	128 KB	Oct 2019
Cinema CD updated: Oct 2019	21.9 MB	Oct 2019

Spec Sheets

	Size	Uploaded
8340A Spec Sheet updated: Oct 2020	336 KB	Oct 2020

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Frequency Range:	45 Hz - 18 kHz (-10 dB)
Frequency Response:	75 Hz - 16 kHz (±3 dB)
Power Rating:	250 watts continuous pink noise, 1000 watts peak
Sensitivity:	96 dB SPL, 1W @ 1m (3.3 ft)
Nominal Impedance:	8 ohms
Horizontal Coverage Angle (-6dB)	100° averaged 400 Hz to 12 kHz
Vertical Coverage Angle (-6dB)	80° averaged 400 Hz to 12 kHz
Directivity Factor (Q)	7 averaged 400 Hz to 12 kHz
Directivity Index (DI)	8.4 dB averaged 400 Hz to 12 kHz
Crossover Frequency:	2.2 kHz
High Frequency Contour:	ISO2969 Curve X surround contour
Polarity:	EIA (Positive voltage to RED terminal gives
Low Frequency Transducer Nominal Diameter::	250 mm (10 in)
High Frequency Transducer Nominal Diameter:	25 mm (1 in)
Downward Firing Angle:	Nominal 20° when mounted flush on back panel
Enclosure Material:	Textured Black H.I.P.S. Plastic
Grille Color:	Black
Input Connectors	5-way binding posts
Dimensions (H x W x D)	457 mm x 457 mm x 260 mm (18 in x 18 in x 10.25 in)
Net Weight:	8.6 kg (19 lb)