
FOR US E IN M ULTI-CHANNEL MUSIC OR HOME THEATER S YS TE MS
HIGH DEFINITION, LEFT/CENTER/RIGHT CHANNEL BOOKSHELF LOUDSPEAKER
HDLCRBX

Thank you for choosing the
from Niles. With proper installation and operation, you should enjoy years of trouble-free use.

The Niles HDLCRbx High-Defi nition, Left/Center/Right Channel Loudspeaker is expressly designed
for superior sonic quality in front left-, center-, or front right-channel applications. It employs ad-
vanced technology components that extract the subtle nuances in recorded music or the thunder-
The HDLCRbx features newly-developed woofer-cone material that combines injection-molded
voice-coil excursion. The result is a new level of deep bass performance.
The HDLCRbx’s Teteron Tweeter employs a tri-laminate design consisting of an inner textile layer,
which forms the dome, a high damping layer to kill unwanted resonances, and an outside layer of
The HDLCRbx employs Niles’ D.S.F.G. Directed Sound Field Geometry
the loudspeaker is mounted above or below a TV or screen.

The HDLCRbx includes acoustic fi ne-tuning controls on the rear panel. These controls enable optimiza-
tion of the high frequencies and dialog with 3 dB of Treble Cut and 3 dB of Dialog Enhancement.
The HDLCRbx includes a rear-panel control that enables the installer to deactivate the D.S.F.G.
in certain applications. For example, when the loudspeaker is
to accommodate a wide range of system designs.
The HDLCRbx is specifi cally designed for Home Theater Sound. This model exceeds the specifi cations
set forth by Dolby Laboratories for the accurate reproduction of Dolby Digital-Encoded Sources.

INSTALLATION CONSIDERATIONS
very quickly and can create damaging “clipping” distortions. A more powerful amplifi er will play at
the same volume without distorting. See
on page 10 for more information about
we recommend 14-gauge wire. The HDLCRbx’s gold-plated, fi ve-way binding posts will accommo-
FEATURES GOLD-PLATED, FIVE-WAY BINDING POSTS THAT CAN BE CONNECTED IN
When running wire inside walls or ceilings, use special jacketed cable (CL-2 or CL-3) to protect the
wire and for fi re prevention. In some areas, conduit is also required. For a trouble-free installation,
TECH TIP
Wire size is expressed by its AWG (American
Wire Gauge) number – the lower the number,
the larger the wire. For example, 12 AWG is
physically larger than 14 AWG.

LOUDSPEAKER IS DESIGNED FOR USE IN FRONT LEFT-, CENTER-, OR
For stereo music applications, try to place the loudspeakers so that they are equally
In home theater applications where there is a center channel, you may choose to space
encoded movies and TV shows. However, for combined music and movie usage,
position is 10 feet back from the wall, place the loudspeakers between 5 and 10 feet
for front left and right channels.

As for placement height, place front left and right loudspeakers vertically on either side of the
on page 6). For best response, orient the
LOUDSPEAKER TOO CLOSE TO A DIRECT-VIEW TV MONITOR, AS IT
sponse. Known as the boundary effect, placing loudspeakers close to a wall/ceiling boundary or
to others it just seems like more bass sound.
As a good rule-of-thumb, if you like listening to your current pair of loudspeakers with the bass
turned up, you’ll enjoy corner placement. However, if you listen with the tone controls at neutral,
try keeping the loudspeakers at least 2 or 3 feet from the boundaries of the room.
The center-channel loudspeaker is the workhorse in a home theater system. It handles all of the
In a typical installation, place the HDLCRbx horizontally, directly above the television or
projection screen. Try to insure that the loudspeaker is not placed too high relative to

For installations where a perforated projection screen will be used, place the HDLCRbx,
NOTE: WHEN PLACING THE HDLCR
AT EAR LEVEL, SET THE D.S.F.G. SWITCH (ON THE REAR)
TO DEFEAT. SEE PAGE 7 FOR MORE DETAILS.
HDLCRBX
HDLCRBX
HDLCR
HDLCR

FINISHING THE INSTALLATION
At each loudspeaker, separate the loudspeaker wire so that at least 2 inches of each
NOTE: Observe correct polarity: Positive (+) goes to the RED post and negative (–) goes
to the BLACK post. If you are unsure of wire polarity, see the section,
The D.S.F.G. Directed Sound Field Geometry provides optimum off-axis phase and frequency re-
sponse due to the acoustic interaction between the woofers and the tweeter. The fl attest response
will be obtained approximately 15 degrees off-axis in the direction opposite the tweeter. For opti-
(on the next page) and orient the loudspeaker as follows:
For center-channel use above a TV, place the HDLCRbx horizontally with the tweeter
For center-channel use below a TV, place the HDLCRbx horizontally with the tweeter
For front-channel use, place one HDLCRbx vertically on either side of the TV so the

for acoustic fi ne-tuning after placement, as shown in
Initially set Treble Cut to Flat and Dialog Enhance to Normal.
If a HDLCRbx is placed in a room with highly reflective surfaces like glass or tile or the
Listen to dialog being reproduced on the HDLCRbx. If you want it more pronounced, set
Ribbed area you can feel on one conductor
Different colors of metal wire on each conductor
Fabric strand or string wound into one of the conductors
The HDLCRbx’s Treble Cut, Dialog Enhance, and D.S.F.G. switches.

two playing together will be lacking in bass and sound “phasey.” If you suspect the sound is not
Stand halfway between the loudspeakers.
Play some music with the amplifier or receiver set to Mono.
Listen to the richness of the bass and the loudness of the sound.
Turn off the amplifier and reverse the connections on one amplifier channel only.
Repeat the listening test with the same volume control setting. When the sound has a

Achieving a reasonable volume of sound in a large room requires more amplifi er power than it does
This creates “clipping” distortion, which will make treble sound very harsh and unmusical.
When you hear harsh-sounding treble from any good loudspeaker, turn the volume down immedi-
which will quickly damage any fi ne loudspeaker. You are much less likely to damage a loudspeaker
To clean the enclosure, use a dampened soft cloth or paper towel. To clean the grille, use a gentle

Teteron Tweeter with fl uid cooling
We recommend using 16- to 18-gauge loudspeaker wire for runs up to 80 feet and

N i l e s A u d i o C o r p o r a t i o n
1 2 3 3 1 S . W . 1 3 0 S t r e e t M i a m i , F l o r i d a 3 3 1 8 6
D e s i g n e d a n d E n g i n e e r e d i n U S A
M a d e i n
C h i n a
© 20 08 N il es A ud io C or po rati on . Al l ri ghts r es er ve d. N il es , the Ni le s lo go s, Ble nd in g Hi gh Fid el it y an d
Arc hi te ctur e an d D. S. F. G. D ir ec te d So un d Fiel d Ge om et ry a re r eg iste re d tr ad em arks o f Ni le s Au dio Co rp or at io n.
TCC i s a tr ad em ar k of N iles A ud io C or pora ti on .
Al l ot her tr ad em ar ks a re t he p ro pe rt y of t he ir r es pe ctiv e ow ne rs . 05 /05 DS 004 20 B
B L E N D I N G H I G H F I D E L I T Y A N D A R C H I T E C T U R E
®