THX ULTRA2 LOUDSPEAKERS
IMPORTANT SAFETY INSTRUCTIONS
READ these instructions.
KEEP these instructions.
HEED all warnings.
The easiest way to remove the speaker from its carton is to turn the open end of the box
down so that it is resting on a table or the floor, with the flaps spread out and away. Then
pull the box straight up and off. Remove any packing material from the speaker and grille,
place it back in the carton, and store in case you ever need to ship the loudspeaker. Each
speaker comes supplied with rubber stick-on feet that should be applied to prevent any
damage to either the speaker or the surface on which it is resting. (See Figure 1.)
FOLLOW all instructions.
DO NOT use this apparatus near water.
CLEAN ONLY with dry cloth.
DO NOT block any ventilation openings. Install in accordance with the manufacturer's
DO NOT install near any heat sources such as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce heat.
DO NOT defeat the safety purpose of the polarized or grounding type plug. A polarized plug
has two blades with one wider than the other. A grounding type plug has two blades and a
third grounding prong. The wider blade or the third prong are provided for your safety. If
the provided plug does not fit into your outlet, consult an electrician for replacement of the
0. PROTECT the power cord from being walked on or pinched, particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
1. ONLY USE attachments/accessories specified by the manufacturer.
2. USE only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold
with the apparatus. When a cart is used, use caution when moving the cart/apparatus
combination to avoid injury from tip-over.
3. UNPLUG this apparatus during lightning storms or when unused for long periods of time.
4. REFER all servicing to qualified service personnel. Servicing is required when the apparatus
has been damaged in any way, such as power-supply cord or plug is damaged, liquid has
been spilled or objects have fallen into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has been dropped.
Your THX Ultra2 loudspeakers will achieve optimum performance when located in
conformance with THX guidelines, on which the following instructions are based. Don’t be
discouraged if some compromise is necessary, however, or if modest adjustments will
make the system look much better in the room. The speakers are engineered to deliver
excellent sound over a relatively wide range of placements within the basic framework of a
This symbol indicates that there are important operating and maintenance instructions
in the literature accompanying this unit.
.1-, 6.1-, or 7.1-channel surround-sound installation. This is especially the case for
WDST™ (Wide Dispersion Surround Technology) surround speakers, which offer many
more practical placement options than conventional designs. In the end, all that matters is
what sounds good to you and what works in your home theater.
This symbol indicates that dangerous voltage constituting a risk of electric shock is
present within this unit.
Before we move on to the specifics, here are some placement considerations that apply
WARNING: To reduce the risk of fire or electrical shock, do not expose this apparatus to rain
Front speakers typically sound best when their tweeters are at approximately ear height
for seated listeners. If this isn’t possible (as it often is not for center-channel speakers), it
is sometimes beneficial to tilt the speaker slightly so that it is aimed into the listening
area. Surround-channel speakers usually perform best when placed slightly above
seated ear level.
If you are putting speakers in a cabinet, try to bring their fronts out far enough that they
are at least flush with the cabinet’s front.
When practical, arrange each speaker so that its woofer is at somewhat different
distances from the floor, the wall behind it, and the wall beside it. It can also help to
have the left and right front speakers at different distances from their nearest side walls.
This sort of staggering helps smooth the bass range.
WARNING: Voltages in this equipment are hazardous to life. No user-serviceable parts inside.
Refer all servicing to qualified service personnel.
CAUTION: Changes or modifications not expressly approved by the manufacturer could void the
user’s authority to operate this device.
Any speaker’s bass output and response is strongly influenced by its distance from room
boundaries, such as walls and the floor. Moving a speaker closer to a room boundary will
increase its bass output, while moving it away will reduce the bass. So you will get
maximum bass from a speaker by placing it in a corner and minimum bass by placing it
in the center of the room.
ABOUT YOUR KLIPSCH PURCHASE
Thank you for your purchase of Klipsch THX® Ultra2™ loudspeakers. After reading this
manual and connecting your system, you will hear the results of over 55 years of stringent
engineering and class-leading research and development. Like all Klipsch products, your
loudspeakers feature Klipsch Tractrix® Horn-loaded Technology– the guiding design for the
first Klipschorn® developed in 1946 and for every product that has followed. Horn-loading
allows your speakers to deliver high sensitivity, low distortion, flat frequency response and
wide dispersion, which translates to unequaled power, detail, and dynamics, the hallmark of
Figure 2 shows a THX-Ultra2 compliant 7.1-channel speaker layout. (Configuration for 5.1
channels is the same minus the surround back loudspeakers behind the listening area.)
KL-650-THX or KL-525-THX LCR’s are used for front left, center, and right channels. The
left and right surrounds are KS-525-THX WDST™ loudspeakers. The surround back
speakers are narrowly spaced KL-650-THX or KL-525-THX LCR’s. In some installations, it
may be preferable to use KS-525-THX’s for the surround back channels due to their
smaller size. Their WDST design works very well in this application. Two KW-120-THX
subwoofers are necessary to achieve THX Ultra2 maximum output requirements. This
specification assumes a very large room, however, and in many installations a single
The Klipsch Sound.” Please be sure to fill out the warranty card at the back of this manual
or online at www.klipsch.com so we are better able to serve you. Again, thank you for
choosing Klipsch and we hope that your speakers bring life to your music and movies for