JBL Decade L36 - Listening Room Acoustics; Placement

The specified 8-ohm impedance rating is a nominal
figure which suggests a connection giving the most
efficient power transfer between amplifier and
loudspeaker system. However, 4- or 16-ohm amplifier
terminals can be used without danger.
The sound reflecting or sound absorbing qualities of
the listening room will affect the sound quality of a
loudspeaker system. Room acoustics can be tested by
listening to the echo of a sharp sound, such as hand
clapping.
A room having large windows, paneled walls and a
hardwood floor or ceiling will be acoustically "live" and
will echo noticeably. A room containing overstuffed
furniture, carpeted floors or draped windows will be
acoustically "dead" and will echo very little or not at all.
Ideally, there should be a reasonable balance between
absorptive material and sound reflecting surfaces. If
there are two large reflecting surfaces facing each other,
the "bounce" between them will make sounds run
together and the music will lack definition. Large, flat
wall surfaces should be broken up with bookshelves,
drapes or screens.
Although JBL loudspeakers have a wide sound
dispersion pattern, the final sound of the completed
installation is affected by the location of the enclosure
within the listening environment. If possible, experiment
with placement of each loudspeaker system before
deciding on a final arrangement.
For the best possible stereo performance, the two
loudspeaker systems should be arranged symmetrically
on each side of the listener. As a general rule, a person
sitting in the usual listening position should see an angle
5
LISTENING
ROOM ACOUSTICS
PLACEMENT
1. Depress colored button, exposing hole in terminal post.
2. Push stripped end of lead wire into hole and release
button. Never apply twisting force to the terminal post.