BALBOA SUB 10 (serv.man10) - JBL Audio User Guide / Operation Manual. Page 3

For more than 60 years, JBL

®

has been providing audio equipment 

to concert halls, recording studios and movie theaters around the
world, and has become the hands-down choice of leading recording
artists and sound engineers.

With the JBL Balboa Series, innovative technologies such as
titanium-laminate-dome tweeters, EOS waveguides and high-
performance transducers are available to you. Enjoy!

If you suspect damage from transit, report it immediately to your
dealer. Keep the shipping carton and packing materials for future
use.

Since the installation of a subwoofer can be somewhat more
complicated than installing full-range speakers, it is essential that
you read this section very carefully prior to connecting the
subwoofer to your system. 
Should you have questions relating to your installation, it is
advisable to contact either your dealer or distributor, or visit
www.jbl.com 
for advice.

The performance of the subwoofer is directly related to its
placement in the listening room and how you align the subwoofer
with its satellite speakers. Setting the volume of the subwoofer in
relation to the left and right speakers is also of critical importance
because it is essential that the subwoofer integrate smoothly with
the entire system. Setting the subwoofer’s volume level too high will
result in an overpowering, boomy bass. Settingthe volume level too
low will negate the benefits of the subwoofer.

Here are several additional facts on installation that may prove
useful. It is generally believed by most audio authorities that low
frequencies (below 125Hz) are nondirectional and, therefore,
placement of a subwoofer within any listening room is not critical.
While in theory it is true that the larger wavelengths of extremely
low frequencies are basically nondirectional, the fact is that, when
installing a subwoofer within the limited confines of a room,
reflections, standing waves and absorptions generated within the
room will strongly influence the performance of any subwoofer
system. As a result, specific location of the subwoofer becomes
important, and we strongly recommend that you experiment with
placement before choosing a final location. 

Placement will depend upon your room and the amount and quality
of bass required (for example, whether or not your room permits
placement of the subwoofer near either satellite). Be sure to leave a
minimum of six inches between the wall and the port on the
subwoofer. 

This example shows the subwoofer positioned in the corner
to maximize bass output.

SUB

RIGHT-
CHANNEL

SPEAKER

PRIMARY
LISTENING
AREA

ENGLISH