JBL Speaker System HTI88 User Manual

®
HOME THEATER  
IN-WALL SERIES  
HTI88  
OWNER’S GUIDE  
 
SPEAKER PLACEMENT  
Low-frequency sounds are  
normally omnidirectional,  
It is generally recommended  
that the speaker be installed so  
that the bottom of the speaker  
is approximately 12" from the  
floor. This is to help with the  
low-frequency loading (bass  
reinforcement). This also helps  
hide the speaker in a less visi-  
ble place. In special circum-  
stances it is acceptable to  
install the speaker at any  
When using two HTI88 in-wall  
subwoofers, you may need to  
be concerned about phase,  
as the sound waves may  
cancel each other out. If bass  
response seems low, try invert-  
ing the polarity on one sub-  
woofer – i.e., connect the (+)  
terminal on the amplifier to the  
(–) terminal on the speaker, and  
the (–) terminal on the amplifier  
to the (+) terminal on the  
meaning the listener can’t tell  
where they are generated from.  
However, frequencies between  
75Hz and 150Hz can be local-  
ized, especially at higher vol-  
ume levels. Positioning your  
subwoofer as recommended  
will provide the most natural  
soundstage and imaging from  
your loudspeaker system.  
height on a wall.  
speaker.  
It is generally recommended  
that you install your HTI88 in-  
wall subwoofer along the same  
wall as the front loudspeakers.  
The HTI88 subwoofer is not  
video-shielded and should not  
be placed near a video display.  
Installing the HTI88 near a cor-  
ner will tend to maximize low-  
frequency output. Be cautious  
when installing in a corner, to  
avoid a “boomy” sound. Also  
take into consideration any  
unusual features of the room,  
such as an alcove, which may  
tend to create a localized node  
that may affect bass response  
in that area of the room.  
Remember that these are just  
guidelines. Since every listen-  
ing room is different, JBL  
strongly recommends experi-  
menting with the positioning of  
your subwoofer prior to cutting  
the wall to obtain the most  
pleasing results in your room.  
One technique that can help  
you find the ideal subwoofer  
location is to temporarily bor-  
row a stand-alone subwoofer  
and place it near the main lis-  
tening location. Then move  
around the room and determine  
where you hear the most pleas-  
ing bass performance. This  
would then be the ideal loca-  
tion for the subwoofer.  
3
 
SPEAKER CONNECTIONS  
Connection Tips  
speakers in your system with  
the correct polarity remains  
equally important in order to  
preserve the proper ambience  
and directionality of the  
To use the spring-clip-type ter-  
minals on the HTI88 loudspeaker,  
press the colored tab and insert  
the bare end of the wire into the  
hole. Release the tab and gently  
tug the wire to ensure that it is  
secure.  
program material.  
If two HTI88 subwoofers are  
used, the wires for both speak-  
To use the push-type terminals  
on the connections panel sup-  
plied with the optional HTI88BB  
“back box” enclosure, depress  
the colored cap until the pass-  
through hole in the binding post  
is revealed. While holding the  
cap down, insert the bare end of  
the wire, or a banana plug, into  
the pass-through hole. Release  
the cap and tug gently on the  
wire to ensure that it is secure.  
Speakers and electronics have  
ers should be the same length.  
corresponding (+) and (–) termi-  
If one speaker is placed closer  
nals. Most manufacturers of  
to the amplifier than the other,  
speakers and electronics,  
hide the excess wire behind  
including JBL, use red to  
the wall. If bass response  
denote the (+) terminal and  
seems low, there may be a  
black for the (–) terminal. It is  
phase problem, with the sound  
important to connect both  
waves from the two sub-  
speakers identically: (+) on the  
woofers canceling each other  
speaker to (+) on the amplifier  
out. If bass response seems  
and (–) on the speaker to (–) on  
low, try inverting the polarity  
the amplifier. Wiring “out of  
on one subwoofer – i.e., con-  
Since the HTI88 is a passive  
loudspeaker, only speaker-level  
connections are available.  
Depending on whether you are  
using a dedicated subwoofer  
phase” results in thin sound,  
nect the (+) terminal on the  
weak bass and a poor stereo  
amplifier to the (–) terminal on  
image. With the advent of multi-  
channel surround sound  
the speaker, and the (–) termi-  
nal on the amplifier to the (+)  
systems, connecting all of the  
terminal on the speaker.  
Connection Method #1, Using One HTI88  
(Remove Shorting Straps)  
Wire  
Recommended  
Size  
Length  
Up to 20 ft.  
Up to 30 ft.  
Receiver/Amplifier Speaker Outputs  
16-gauge  
12-gauge  
Left  
Right  
Greater than 30 ft.  
10-gauge  
+
+
Connection Method #1, Using One HTI88  
With Back Box (Remove Shorting Straps)  
Receiver/Amplifier Speaker Outputs  
Rear of HTI88  
B L K  
Left  
Right  
G R N  
+
+
L 2  
L 1  
C 2  
C 4  
C 1  
J 2 J 1  
HTi88s  
C 3  
L 3  
L 4  
BLK  
YEL/BLK  
YEL  
WHT/BLK WHT  
ORG/BLK  
ORG  
GRE/BLK  
GRE  
+
ORN  
+
+
+
INPUT 1  
INPUT 2  
OUTPUT 1  
OUTPUT 2  
Connections Panel  
of HTI88 Back Box  
Front Left Speaker  
Front Right Speaker  
+
+
Front Left Speaker  
Front Right Speaker  
+
+
4
 
amplifier or your main receiver/  
amplifier to power the HTI88,  
select one of the two con-  
nection methods that follow.  
your receiver/amplifier to the  
Input 1 (for left channel) and  
Input 2 (for right channel)  
connectors on the HTI88  
loudspeaker or connection  
panel. Connect the Output 1  
terminals to the correspon-  
ding terminals on your front  
left speaker, and the Output 2  
terminals to the correspon-  
ding terminals on your front  
right speaker.  
You may wish to mount the  
HTI88 horizontally to preserve  
the stereo image of the left  
and right low frequencies.  
Connection Method #1  
Use this method when you  
are using the HTI88 with  
your main receiver/amplifier.  
Connect the main left and  
right speaker-level outputs on  
The HTI88’s onboard cross-  
over feeds the low-passed  
signal (2nd order at 100Hz) to  
the HTI88 subwoofers, and  
Connection Method #1, Using Two HTI88 Loudspeakers (Use Shorting Straps)  
Receiver/Amplifier Speaker Outputs  
Left  
Right  
+
+
Rear of Left HTI88  
Rear of Right HTI88  
B L K  
B L K  
G R N  
G R N  
L 2  
L 4  
L 2  
L 4  
L 1  
C 1  
L 1  
C 2  
C 4  
C 2  
C 4  
C 1  
C 3  
J 2 J 1  
J 2 J 1  
HTi88s  
HTi88s  
C 3  
L 3  
L 3  
BLK  
BLK  
ORN  
ORN  
Front Right Speaker  
Front Left Speaker  
+
+
Connection Method #1, Using Two HTI88 Loudspeakers  
With Back Boxes (Use Shorting Straps)  
Receiver/Amplifier Speaker Outputs  
Left  
Right  
+
+
Connections Panel of  
Left HTI88 Back Box  
Connections Panel of  
Right HTI88 Back Box  
YEL/BLK  
YEL  
WHT/BLK WHT  
ORG/BLK  
ORG  
GRE/BLK  
GRE  
YEL/BLK  
YEL  
WHT/BLK WHT  
ORG/BLK  
ORG  
GRE/BLK  
GRE  
+
+
+
+
+
+
+
+
INPUT 1  
INPUT 2  
OUTPUT 1  
OUTPUT 2  
INPUT 1  
INPUT 2  
OUTPUT 1  
OUTPUT 2  
Front Right Speaker  
Front Left Speaker  
+
+
5
 
the high-passed signal to  
the speaker-level outputs for  
connection to the satellite  
speakers.  
Connection Method #2  
not interfere with the higher-  
order processing that is occur-  
ring at the preamp stage.  
Use this method when you are  
using the HTI88 with a dedi-  
cated subwoofer amplifier.  
Connect your main receiver/  
processor’s line-level subwoofer  
output to the line-level input  
on your subwoofer amplifier.  
Connect the speaker terminals  
on your subwoofer amplifier to  
either Input 1 or Input 2. If your  
amplifier has stereo outputs,  
you may connect one channel  
to each of Inputs 1 and 2.  
However, you must remove the  
shorting straps when using  
stereo mode. Alternatively, you  
may connect each channel to  
a separate HTI88. When using  
only one input on an individual  
HTI88, you should leave the  
shorting bars in place.  
Using the HTI88BB Back Box  
Whichever connection method  
you choose, if you are installing  
the HTI88BB back box, you will  
need to connect all of the eight  
wires coming out of the bottom  
of the back box to the appropri-  
ate terminals on the loud-  
speaker. The wires are color-  
coded as follows:  
INPUT 1 (–): Yellow with black  
stripe  
NOTE: When using Connection  
Method #1 with only one HTI88,  
the shorting straps must be  
removed.  
If you are using two HTI88 sub-  
woofers, connect the left speaker  
outputs on your receiver/ampli-  
fier to Input 1 on one subwoofer  
(or the connections panel on its  
back box), and the right speaker  
outputs on your receiver/ampli-  
fier to Input 1 on the second  
subwoofer (or the connections  
panel on its back box). Then  
connect Output 1 from the left-  
channel subwoofer to the inputs  
on your main left speaker, and  
Output 1 from the right-channel  
subwoofer to the inputs on your  
main right speaker. When using  
the HTI88 in this mono mode,  
you should not remove the  
INPUT 1 (+): Solid yellow  
INPUT 2 (–): White with black  
stripe  
INPUT 2 (+): Solid white  
OUTPUT 1 (–): Orange with  
black stripe  
NOTE: The built-in network on  
the HTI88 is a 2nd-order low-  
pass filter, crossed over at 100Hz.  
This filter is always active.  
Although the subwoofer or LFE  
output on your receiver/proces-  
sor may already be crossed  
over, the HTI88’s network will  
OUTPUT 1 (+): Solid orange  
OUTPUT 2 (–): Green with black  
stripe  
shorting straps.  
OUTPUT 2 (+): Solid green  
Connection Method #2, Using One HTI88 in Mono Mode (Use Shorting Straps)  
Amplifier  
Receiver/Processor  
Speaker-Level  
Outputs  
Rear of HTI88**  
Line-Level  
Input  
Subwoofer  
Out  
B L K  
+
G R N  
L 2  
L 4  
L 1  
C 2  
C 4  
C 1  
J 2 J 1  
HTi88s  
C 3  
L 3  
BLK  
ORN  
6
 
Connection Method #2, Using One HTI88 in Stereo Mode (Remove Shorting Straps)  
Amplifier  
Receiver/Processor  
Speaker-Level  
Outputs  
Rear of HTI88**  
Line-Level  
Inputs  
Subwoofer or  
Main Amp  
Out  
B L K  
+
G R N  
L 2  
L 4  
Left  
L 1  
C 2  
C 4  
C 1  
C 3  
Left  
Left  
J 2 J 1  
HTi88s  
L 3  
BLK  
+
Right  
Right  
ORN  
Right  
** Use corresponding inputs on HTI88BB connections panel when installed with back box.  
Connection Method #2, Using Two HTI88 Loudspeakers  
With Back Boxes (Use Shorting Straps)  
Receiver/Processor  
Amplifier  
Left HTI88 Back Box***  
Speaker-Level  
Outputs  
Line-Level  
Inputs  
Subwoofer or  
Main Amp  
Out  
YEL/BLK  
YEL  
+
WHT/BLK WHT  
ORG/BLK  
ORG  
GRE/BLK  
GRE  
+
+
+
+
INPUT 1  
INPUT 2  
OUTPUT 1  
OUTPUT 2  
Left  
Left  
Left  
Right HTI88 Back Box**  
YEL/BLK  
YEL  
+
WHT/BLK WHT  
ORG/BLK  
ORG  
GRE/BLK  
GRE  
+
+
+
+
INPUT 1  
INPUT 2  
OUTPUT 1  
OUTPUT 2  
Right  
Right  
Right  
*** Use corresponding inputs on rear of HTI88 speaker when installed without back box.  
INSTALLATION  
Tools Needed  
The JBL HTI Series in-wall  
speakers were designed to be  
easily installed. However, if  
you are unsure of your ability  
to properly install these loud-  
speakers, please contact  
your dealer or a qualified  
installer.  
Pencil  
Phillips-head #2 screwdriver  
Measuring tape  
Utility knife  
Awl  
Carpenter’s level  
7
 
EXISTING CONSTRUCTION  
HTI88  
Notes:  
Level  
• Use the cardboard template  
when cutting the drywall.  
Although the HTI88 may be  
oriented either horizontally  
or vertically, the installation  
procedure is the same.  
Template  
• Please be aware the tem-  
plate is slightly oversized to  
allow for some margin of  
error when cutting with the  
drywall saw – there should  
be no need to allow for fur-  
ther margin of error as this  
may risk the integrity of the  
installation.  
The grille is packed separately  
from the speaker. If at some  
later date you wish to remove  
the grille from the speaker, to  
avoid scratching the grille or  
baffle you may unfold a paper  
clip, insert the straight end  
through one of the holes in the  
grille, and gently pull up.  
Determine the correct speaker  
location.  
1/2"  
1/2"  
1/2"  
Cut the drywall.  
Connect the speaker wires  
to the speaker as  
described on pages 4–7.  
Note: Always allow at least  
one-half inch between a wall  
stud and the speaker cutout, or  
the locking tabs will not be able  
to swivel into place.  
Place the frame assembly in  
the wall until the frame surface  
is flush with the wallboard.  
Screw down each of the ten  
Phillips-head screws. It is best  
to use a low-speed cordless  
driver or a hand-held screw-  
driver to tighten the screws to  
prevent over-tightening. The  
locking tabs will swivel into  
place and secure the unit to the  
rear surface of the drywall.  
Replace the metal grille. Attach  
the JBL logo to the grille to cor-  
respond to vertical or horizontal  
installation.  
8
 
NEW CONSTRUCTION  
You may either purchase the  
optional HTI88 back box kit, or  
you may install the speaker  
See  
after the wallboard has been  
Detail A  
installed by following the  
instructions for existing  
construction on page 8.  
L-Brackets  
INSTRUCTIONS FOR  
Detail B  
INSTALLING THE HTI88 USING  
THE HTI88BB BACK BOX KIT  
See  
Detail B  
The HTI88BB enclosure (“back  
box”) is optional. If desired, it is  
installed during new construc-  
tion before the wallboard is  
installed.  
Centering Bar  
3. Fit the enclosure into the  
wall. The bottom edge of the  
bottom L-brackets will rest  
against the baseboard 2 x 4.  
At this time, make note of  
adjustments necessary to  
square the enclosure into  
the wall (see Detail C).  
Included With the HTI88BB:  
(4) L-brackets  
(8) #10 32 x 1" screws  
(8) #10 split washers  
(8) #10 flat washers  
(8) #8 x 3/4" woofer screws  
(2) wood centering bars  
(4) #10 32 x 1-1/2" flat-head  
screws  
Centering Bar  
Installation:  
1. Install the two centering bars  
as shown in Detail B in the  
drawings. The centering bars  
are for setting the depth of  
the enclosure. They also help  
locate the left/right position  
of the enclosure as they can  
be mounted into the studs at  
the left and right to hold the  
enclosure in the correct loca-  
tion before final mounting.  
Detail C  
See  
Detail C  
L-Brackets  
Detail A  
4. After refitting and tightening  
the L-brackets into the enclo-  
sure (but not the wall studs  
yet), fit the enclosure into the  
wall once again.  
2. Install the four L-brackets to  
the four corners of the en-  
closure. Each of the eight  
screws should have both the  
split washer and flat washer  
installed; the split washer  
goes on first. Leave the  
screws a half-turn loose at  
first to allow for adjustment  
later (see Detail A). Do not  
screw the L-brackets to the  
wall studs at this time (see  
step 6).  
5. At this time, you may want to  
screw through each side of  
the wood centering bars to  
mount the enclosure to the  
studs. This will help hold the  
enclosure in position before  
the L-brackets are mounted  
to the studs.  
9
 
6. Screw the L-brackets into the  
studs.  
7. Remove the wood centering  
bars and replace the flat-  
head screws into the holes  
left over (the holes left in the  
cabinet face underneath the  
bars are also counterbored to  
accept the flat-head screws).  
See  
Detail A  
8. The enclosure is now  
installed and ready for the  
wallboard to be installed  
over it.  
9. Make the connections from  
your receiver/amplifier to the  
HTI88 back box connections  
panel, and to any other  
speakers as appropriate for  
your system, following the  
instructions on pages 4–7.  
Connect the eight wires  
hanging from the bottom of  
the HTI88BB back box to the  
correct terminals on the  
HTI88 loudspeaker. See  
pages 6–7.  
PAINTING THE SPEAKER  
FRAME AND GRILLE  
JBL HTI Series loudspeakers  
can be painted to match any  
décor. If you wish to change  
their color, the satin finish on the  
grille and frame will function as  
a primer coat. Before painting,  
install the plastic paint shield  
securely into the recess in the  
baffle. This will protect the  
speaker components and baffle  
from paint residue.  
Use a high-quality spray paint,  
and apply a thin coat of color.  
Paint the grille separately from  
the baffle before installing it.  
Be certain the grille  
perforations remain  
free of paint. Filling  
them with paint will  
diminish the sound  
quality.  
10  
 
TROUBLESHOOTING  
If there is no sound  
from any of the  
speakers:  
If the system plays at  
low volumes but shuts  
off as volume is  
configured to enable all channels  
that you are using.  
increased:  
If there is low (or no)  
bass output:  
• Check that receiver/amplifier  
is on and a source is playing.  
• Check all wires and connec-  
tions between receiver/amplifier  
and speakers. Make sure all  
wires are connected. Make sure  
none of the speaker wires are  
frayed, cut, punctured or touch-  
ing each other.  
• If more than one pair of main  
speakers is being used, check the  
minimum-impedance require-  
ments of your receiver/amplifier.  
• Make sure the connections  
to the “Speaker Inputs” have the  
correct polarity (+ and –). If you  
are using two HTI88 subwoofers,  
try inverting the polarity on one  
subwoofer as described on  
page 4.  
• Check all wires and connections  
between receiver/amplifier and  
speakers. Make sure all wires  
are connected. Make sure none  
of the speaker wires are frayed,  
cut, punctured or touching each  
other.  
• Consider adding a separate  
power amplifier to drive the  
HTI88 subwoofer.  
• Review proper operation of  
your receiver/amplifier.  
If there is no sound  
coming from one  
®
• In Dolby* Digital or DTS modes,  
make sure your receiver/proces-  
sor is correctly configured. When  
using a power amplifier with your  
HTI88 subwoofer, make sure  
the subwoofer output of the  
receiver/processor has been  
enabled. See your receiver/  
processor’s owner’s manual for  
further information on correct  
speaker configuration in Dolby  
Digital, DTS and other surround  
sound modes.  
speaker:  
• Check the “Balance” control  
on your receiver/amplifier.  
• Check all wires and connec-  
tions between receiver/amplifier  
and speakers. Make sure all  
wires are connected. Make sure  
none of the speaker wires are  
frayed, cut, punctured or touch-  
ing each other. In multichannel  
applications, make sure that your  
receiver/processor has been  
11  
 
SPECIFICATIONS  
HTI88  
Frequency Response  
Maximum Recommended Amplifier Power  
Impedance  
30Hz – 100Hz (–6dB)  
250 Watts per channel  
8 Ohms nominal per woofer  
94dB (2.83V/1m), both woofers driven  
100Hz, 2nd order  
Sensitivity  
Crossover Frequency  
Woofer  
Dual 8" polymer-coated aluminum cones w/rubber surrounds  
11-7/16" x 20-7/16" (290mm x 518mm)  
10" x 18-5/16" (254mm x 465mm)  
3-7/8" (98mm)  
Plate Size (W x H)  
Mounting Cutout Size (W x H)  
Mounting Depth  
Weight per Speaker  
17 lb (7.7kg)  
All features and specifications are subject to change without notice.  
† The maximum recommended amplifier power rating will ensure proper system headroom to allow for  
occasional peaks. We do not recommend sustained operation at these maximum power levels.  
* Dolby is a registered trademark of Dolby Laboratories.  
DTS is a registered trademark of Digital Theater Systems, Inc.  
Declaration of Conformity  
We, Harman Consumer Group International  
2, route de Tours  
72500 Chateau-du-Loir  
France  
declare in own responsibility that the product described in this  
owner’s manual is in compliance with technical standards:  
EN 61000-6-3:2001  
EN 61000-6-1:2001  
Laurent Rault  
Harman Consumer Group International  
Chateau-du-Loir, France 4/05  
PRO SOUND  
OWNER’S GUIDE  
COMES HOME™  
PRODUCT LINE:  
JBL Home Theater In-Wall Series  
JBL Consumer Products  
250 Crossways Park Drive, Woodbury, NY 11797  
8500 Balboa Boulevard, Northridge, CA 91329  
516.255.4JBL (4525) www.jbl.com  
MODEL: HTI88  
NOTE: For new-construction applications, be sure  
to purchase the HTI88BB back box kit.  
DESIGN GOAL:  
Combine the superior performance of traditional  
JBL loudspeakers with the convenience of in-wall installation.  
© 2005 Harman International Industries, Incorporated.  
All rights reserved.  
WOOFER TYPE: Polymer-coated aluminum cone with rubber surround  
JBL is a registered trademark of Harman International  
)
CROSSOVER NETWORK: Straight-Line Signal Path (SSP  
Industries, Incorporated.  
Part No.406-000-05223  
PROFESSIONAL REFERENCE: Studio Monitor  
 

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