Jbl 4307 User Manual

MODEL 4307

Compact monitor

English

OWNERS MANUAL

www.jbl.com

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Thank YOu FOr ChOOsing This

®

JBL

PrODuCT

Thank you for purchasing this JBL speaker system. Please read though
this owners manual carefully before using the speakers,
and then sit back and enjoy excellent playback sound made possible
through their correct connection and placement.

unPaCking ThE sPEakErs

We recommend saving the cushioning and other packing materials, even
after unpacking the product from the carton box. Harman International
Japan will not be responsible for damage caused by improper packaging
when using materials other than those of the original carton box when
transporting the units for moving, repairs, or other reasons.

PLaCEMEnT

• The speakers are not magnetically shielded. Therefore, if placed

near a CRT television, colors on the screen may become distorted. If
this occurs, move the speaker system slightly further away from the
television.

• Speaker systems are durable consumer goods. Their lifespan can be

shortened due to effects from temperature, humidity, ultraviolet light,
etc. Please keep the speakers away from bright light fixtures and direct
sunlight, and from places with high temperatures, such as near the
exhaust outlets of air conditioners or heaters. Also, please refrain from
placing the speaker system in closed automobiles or next to windows
with direct sunlight.

sPEakEr PLaCEMEnT

• he environment in which speakers are placed generally has a strong

influence on the sound quality of low frequencies. If you place the
speakers in corners of your room, lower frequencies will be enhanced,
and while this will allow you to savor a rich, deep bass, it will also be a
dull sound with no edge. On the other hand, when placed away from the
wall, the sound will be sharp and clean, even though you sacrifice some
of the heavy bass. We recommend that you make the final decision on
the placement of the speaker system while actually playing some of your
favorite music.

• In order to get the best stereo effect, please place the left and right

speakers at an equal distance to the left and right in front of the listener.
While the sound field will become wider as more space is placed between
the left and right speakers, the stereo-image quality of center-oriented
elements such as vocals will weaken. Please adjust the space between
the speakers to match the distance with the listening position.

• The sound localization for these speakers is the center of the treble unit,

and placing your ears at a listening position at this height will provide the

best sound localization and sound eld. Adjust the height of the system

using commercially available speaker stands and racks.

COnnECTiOns

CAUTION: When connecting speakers to an amplifier, please do so after
turning the amplifier off. If you connect the speakers while the power is still
on, it could damage the amplifier and speakers.
This speaker system uses color-coded speaker terminals, with red for +
and black for −. Connect commercially available speaker cables to the
terminals in back while paying attention to the polarity.
*When using loose end cables on which the protective shield has been
peeled back, please be careful that the metal parts of the terminal do
not bite into the protective shield. This could interrupt sound due to poor
connection.
Also, since there is the possibility of a short circuit if the leads of the cables
touch, please do not peel back too far on the protective shield.

LEVEL aDJusTMEnT

The speaker system is equipped to allow users to adjust the levels for mid
and high frequencies, which are easily influenced by factors such as the

size and construction of the room. Adjust to your preferred tone using the

knobs on the left baffle control panel on the unit while listening to music
with which you are familiar. The upper “HF LEVEL” knob adjusts the level
of the high frequency tweeter, and the lower “MF LEVEL” knob adjusts the
mid level frequencies of the mid-range unit.
The levels of each band increase when turning the knobs clockwise, and
decrease when turning them counter clockwise. The “0 dB” position is the
standard position for a normal listening environment.

*Th e relationship bet ween the vo lume level on the amplif ie r a nd
the amount of s ound from the speaker s can di ffer depe nding on
the characteristics of the equipment, such as the ef ficien cy and
imp edance of the speakers, output cha racteristi cs of the amplif ier
and the output level of the source eq uipment (such as a CD player) ,
as well as the combi natio n of these. When using th is speaker system

in com bination with an amplif ie r that has low output, if the ba ss is
enhan ced and the vo lume is raise d to an excessive level using the
tone control or other method, cl ipping will o ccur due to distortion in
the amplifier output, and this could dam age the speakers even if the
power is below the maximum recom mended amplifier in put. If you
sense any abnormalities in sound, pleas e l owe r the volum e.

MainTEnanCE

When the speaker set b ecomes dirt y, wipe with a s of t, dr y c loth.
Never use liquids that contain volatile solvents such as pai nt thinner

or benzene to c lean the system. Also, please be careful not to apply

any spray pe sticide s.
If the grille net be comes dusty, remove the dust us ing a vacuu m
cle an er. W he n d oing so, please adjust the power on the vacuum
cle an er so the suction is not too strong. A lso, d o n ot wash the grille
with water. This may ca use discolorati on and sagging of the grill e to
occ ur.

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