Danger Low Power, General Care, And Service, Subwoofer

Danger: Low Power		overdriving the amplifier and	any solvent to clean any part of
Loudspeakers can withstand a		the greater the potential danger	the system. Should your loud-
great deal of power as long as		to the high frequency unit. The	speaker system ever need ser-
the sound is undistorted. You		best advice is always to use an	vice it should be returned to
can safely use a power amplifi-		amplifier or receiver that will	the JBL dealer where it was
er with a power rating greater		make your speakers play loud,	bought. If this is impractical,
than the loudspeaker system’s		clean and undistorted.	contact your local JBL
rated power, as long as the		General Care	distributor.
sound reproduced is clean and
undistorted. When the power		and Service
output of the amplifier is		Occasional dusting with a
exceeded, distortion sets in. A		clean soft cloth will maintain
large share of these distortion		the original beauty of the finish
products is directed to the		of your JBL speakers. Furniture
tweeter, creating a dangerous		waxes, polishes or cleaners are
situation for the smallest driver		not recommended. The grille
in the system. The smaller the		may be gently vacuumed, and
amplifier or	receiver you use,	stains can be removed with an
the bigger the danger of		aerosol dry cleaner. Never use

Subwoofer

Start with the subwoofer as			Here are your options:
close to one of the front			• Modify the acoustical cou-
corners as possible to take			pling of the subwoofer to the
advantage of solid-angle gains.			room boundaries i.e. move the
If you get too much bass, adjust			subwoofer.
the ”VOLUME” towards ”MIN”.			• Modify the acoustical cou-
The result will be lower distor-			pling of the listener to the
tion and higher reliability. If the			room boundaries i.e. move the
excessive bass is at one or			listener.
more		frequencies,	• Move both the subwoofer and
	discrete
then it	might be	necessary to	the listener.
consider	dealing	with room
modes.