INTRODUCTION
JBL craftsmen have been involved in the art of sound for more than
two generations – signal and source, wood and fabric, transducers
and acoustics – all of it.
Today these craftsmen continue to perform to the most rigid
standards any craftsmen can submit to: those impased upon
themselves.
JBL loudspeakers are carefully engineered instruments, pains-
takingly crafted and assembled to watchmakers standards. JBL
enclosures express the excitement of creative design; they are
elegant, solid and flawlessly finished. JBL transducers and
electronics offer what has been characterized by devoted music
listeners as "the incomparable JBL sound".
By following the few simple suggestions contained in this booklet,
you can look forward to superb high fidelity reproduction that will
retain its clarity and realism year after year.
UNPACKING
The packing material of your Ti-Series speakers has been designed
to protect the loudspeakers from any damage due to rough handling
during shipment. We strongly suggest that you keep the packing
material for future purposes, in case you are moving or your loud-
speakers should require service.
PLACEMENT
The listening room and the location of the loudspeakers within the
room affects bass level and bass response, imaging, clarity and
overall quality of sound. No other single factor has the same level of
effect on the final sound quality. The acoustics of the listening room
are determined by the dimensions of the room, its construction and
the furnishings it contains. Rooms that have different dimensions for
ceiling height, length and width will give a more even, balanced
sound than rooms where the dimensions are equal to each other.
This is important, especially at low frequencies, as the room
dimensions determine the pattern of standing waves within the
room.
Consult your JBL dealer for information regarding the use of
products or materials designed to control certain acoustic problems
caused by room size, shape or construction. In many cases,
significant improvement in performance can be achieved by careful
attention to room acoustics.
Your JBL Ti-Series speakers are able to give a very satisfying sound
in a great variety of listening rooms when set up in an even sided
triangle with respect to the listener. However, a careful setup proce-
dure will always be rewarding, and for best results we recommend
placement well away from the boundaries of the room with
preferably minimum 0.75 m (30 in) distance to the wall behind the
speakers, and 0.75-10 m (30-40 in) distance to the side walls.
A good guideline to proper setup is to start by concentrating on the
tonal balance of the sound, aiming for the most neutral reproduc-
tion. Is the bass too strong or too weak compared to the midrange
and treble? Moving the speakers around in relatively large steps,
(20-30 cm or 8-12 in) will change the perceived tonal balance.
When a satisfying balance is found, a proper sound stage and stereo
localization is developed by smaller movements of the loudspeakers
in combination with angling towards the listening position.
We strongly recommend experimentation in order to find the most
satisfying overall sound. Attention to every detail of the setup will be
beneficial in terms of improved sound quality.
Your authorized JBL dealer will be happy to help you obtain the best
possible performance from your JBL speakers.
NOTE: New loudspeakers require a certain amount of "exercise"
before they perform their best. A steady level of performance is
achieved after 8-12 hours of operation, depending on the nature of
the music and the level. Should you want to speed up this process
you can use inter-station FM noise as a signal during periods, where
you would normally not be listening to the speaker. Alternatively a
CD player on "Repeat" would be an appropriate signal source.
CONNECTIONS
IMPORTANT: When connecting or disconnecting loudspeakers from
an amplifier, the amplifier must be turned off. Making connections
while the amplifier is operating could seriously damage the
loudspeaker system and void the warranty. The amplifier must also
be turned off before connecting or disconnecting cables, at the
amplifier or pre-amplifier inputs.
1 mm
2
(18 AWG) insulated wire is the minimum size recommended
for loudspeaker connection up to 5 meters (16 ft). Beyond this
distance, heavier gauge wire is recommended: 1.5 mm
2
(16 AWG)
up to 10 meter (30 ft) and 2 mm
2
(14 AWG) up to 20 meters (60 ft).
These recommendation are given as MINIMUM requirements, and
generally speaking, the speaker leads should be as short as
possible.
Speaker wire and interconnect cables are important components in
an audio system. With all other factors at an appropriate level of
quality the speaker cable and the interconnect cable can make
significant contributions to the perceived sound quality. Careful
selection of cable and interconnect can add or subtract marked
shadings in the tonal character. Likewise, different cables can have
quite a dramatic impact on the dynamic contrasts experienced by
listeners.
Your JBL dealer has the experience and knowledge to recommend
suitable interconnects and speaker wire to best complement your
system.
The length of the speaker wire will depend on the location of the
loudspeakers and the amplifier. Since the final positioning of the
loudspeaker will be determined by careful listening, you may want to
arrange a temporary wiring layout that will allow the moving of the
loudspeaker to experiment with placement. When the best
loudspeaker position is determined, permanent connections may be
made using the shortest cable runs possible. Both left and right
speaker wires should be the same length. In some systems, the
amplifier may be located near the loudspeaker system and may be
connected using a short length of speaker wire. Although a relatively
long cable between the preamplifier and main amplifier is required
by such a hook-up, the benefit of a short amplifier-to-loudspeaker
connection will often outweigh the drawbacks.
INSTRUCTION MANUAL
