Harman JBL CINEMA SB400, Service Manual

SOUNDBAR PLACEMENT

PLACING THE SOUNDBAR ON A TABLE 

If your TV is placed on a table, you can place the soundbar on the table 
directly in front of the TV stand, centered with the TV screen. As long as 
the surface of the table is flat, the soundbar will rest on its metal feet .

q2DSSGDRNTMCA@QR$0RVHSBGHMSGDf3@AKDtONRHSHNM2DD

Soundbar 

Rear-Panel Controls and Connections,

 on page 2.

WALL-MOUNTING THE SOUNDBAR

If your TV is attached to a wall, you can use the included wall-mount 
bracket to mount the soundbar on the wall directly below the TV 
screen.

1. Determine the location for the soundbar on the wall. Make sure that 

the top of the soundbar will not block your view of the TV screen 
when it is mounted on the wall.

2. Hold the bracket against the wall as a template and mark the 

locations of the soundbar wall-mount bracket holes on the wall. The 
three holes should be evenly spaced 7-1/16" (18cm) apart, and the 
bracket slots are designed to accept 4mm screws. Make sure that 
the holes are at the same height. See the illustration below.

Mark Three Bracket Hole Locations

7-1/16" (18cm) Apart

3. Making sure that the bracket’s flat side is against the wall, attach 

the wall-mount bracket to the wall at the locations you marked, 
using hardware that is appropriate for the wall’s construction and 
materials. Note that the soundbar weighs 7.3 lb (3.3kg). Be sure to 
use hardware that can support this weight.

4. After reading the 

Connections

 section on page 5, connect all cables

to the soundbar.

IMPORTANT: Do NOT plug the soundbar’s power cord into an AC 
outlet at this time.

q2DSSGDRNTMCA@QR$0RVHSBGHMSGDf6@KKtONRHSHNM@MCRDSSGD

soundbar’s Power switch in the “On” position. See 

Soundbar Rear-

Panel Controls and Connections,

 on page 2.

5. Attach the soundbar to the bracket by sliding the bracket’s upper 

tabs into the slots on the back of the soundbar. The soundbar’s slots 
allow you to adjust the soundbar’s angle on the wall to ensure that it 
is level.

Insert Tabs on Bracket
into Grooves in Soundbar

SUBWOOFER PLACEMENT

1

2

3

The performance of a subwoofer is directly related to its placement in 
the listening room and its physical position relative to the other speakers 
in the system. While it is true that in general our ears do not hear 
directional sounds at the low frequencies where subwoofers operate, 

VGDMHMRS@KKHMF@RTAVNNEDQVHSGHMSGDKHLHSDCBNMjMDRNE@QNNLSGD
QDkDBSHNMRRS@MCHMFV@UDR@MC@ARNQOSHNMRFDMDQ@SDCVHSGHMSGDQNNL
VHKKRSQNMFKXHMkTDMBDSGDODQENQL@MBDNE@MXRTAVNNEDQRXRSDL R@
QDRTKSSGDRODBHjBKNB@SHNMNESGDRTAVNNEDQHMSGDQNNLCNDRADBNLD

important to the amount and quality of bass that is produced.

For example, placing the subwoofer next to a wall generally will increase 
the amount of bass in the room; placing it in a corner (1) generally will 
maximize amount of bass in the room. However, corner placement 
can also increase the destructive effect of standing waves on bass 
performance. This effect can vary depending on the listening position – 
some listening positions may yield very good results while others may 
have far too much (or too little) bass at certain frequencies.

In many rooms, placing the subwoofer along the same plane as the 
soundbar (2) can produce the best integration between the sound 
of the subwoofer and that of the soundbar. In some rooms, the best 
performance could even result from placing the subwoofer behind the 
listening position (3).

We strongly recommend that you experiment with placement before 
choosing a final location for your subwoofer. One way you can 
determine the best location for the subwoofer is by temporarily placing 
it in the listening position and playing music with strong bass content. 
Move around to various locations in the room while the system is 
playing (putting your ears where the subwoofer would be placed), and 
listen until you find the location where the bass performance is best. 
Place the subwoofer in that location.

CINEMA SB400