JBL STUDIO L8400P User Manual

SPECIFICATIONS
L8400P
STUDIO
™
L SERIES
OWNER’S GUIDE
®
Model L8400P
Description 12" (300mm), 600-Watt, high-performance compact powered subwoofer
Amplifier
Power (RMS) 600 Watts
Peak Dynamic 1200 Watts
Power
†
Frequency
Response (–3dB) 22Hz – Low-pass crossover frequency
Low-Pass
Crossover
Frequencies 50Hz – 150Hz, Continuously adjustable
Low-Frequency
Transducer 12" (300mm) PolyPlas
™
cone with rubber surround and cast-aluminum chassis;
HeatScape
™
motor structure; Symmetrical Field Geometry
™
(SFG
™
); oversized
fiberglass voice coil; magnetic shorting ring
Baffle Low diffraction, IsoPower
™
Enclosure Sealed
Inputs Gold-plated 5-way binding-post speaker-level; left and right line-level,
switchable to LFE
Outputs Gold-plated 5-way binding-post speaker-level; 150Hz high-pass when using
speaker-level connection
Dimensions
(H x W x D) 16-1/2" (15-1/2" without feet) x 15-1/2" x 15-1/2"
(419mm [394mm without feet] x 394mm x 394mm)
Weight 58 lb (26.4kg)
†
The Peak Dynamic Power is measured by recording
the highest peak-to-center voltage produced by the
power amplifier with its limiters disabled, across
the output of a resistive load equal to minimum
impedance of the transducer, using a 50Hz sine wave
burst, 3 cycles on, 17 cycles off.
© 2005 Harman International Industries, Incorporated. All rights reserved.
JBL and Harman International are trademarks of Harman International
Industries, Incorporated, registered in the United States and/or other countries.
Part No.
354038-001
PRO SOUND COMES HOME
™
JBL Consumer Products, 250 Crossways Park Drive, Woodbury, NY 11797 USA
8500 Balboa Boulevard, Northridge, CA 91329 USA
2, route de Tours, 72500 Chateau du Loir, France
www.jbl.com
Dolby and Pro Logic are registered trademarks of Dolby Laboratories.
DTS is a registered trademark of DTS, Inc.
All features and specifications are subject to change without notice.

JBL STUDIO L8400P Specifications

General

Type	Subwoofer
Series	Studio L
Frequency Response	25Hz – 150Hz
Phase Switch	Yes
Driver Size	12" (300mm)
Inputs	Line-level
Crossover Frequency	50Hz – 150Hz; 24dB/octave, continuously variable
Enclosure Type	Bass-reflex
Dimensions (H x W x D)	400mm x 451mm
Amplifier Power	600 Watts RMS

Summary

Specifications

Important Safety Precautions

Speaker Placement

Guidance on optimal subwoofer positioning for maximizing bass response and soundstage.

Speaker Connection

Explains how to connect the subwoofer using different methods and terminal types.

Digital Surround Mode Connection

Dolby Pro Logic Line Level Connection

Dolby Pro Logic Speaker Level Connection

Operation

Power On/Off

Instructions for switching the subwoofer's master power on and off.

Level Control Adjustment

How to adjust the subwoofer's volume relative to the system.

Crossover Frequency Adjustment

Setting the crossover frequency for optimal bass reproduction.

Phase Control Adjustment

Adjusting phase for maximum bass output at the listening position.

Troubleshooting

No Sound From Speakers (High-Level Input)

Checks for no sound when using speaker-level inputs.

Low Bass Output Issues

Addresses issues with insufficient or no bass output from the subwoofer.

No Sound From Subwoofer (Line-Level Input)

Checks for no sound when using line-level inputs.