Jbl 5674, 5672, 5671 User Manual
Cinema 5000 Series Screen Channel Systems
CE
User’s Guide
TABLE OF CONTENTS
1. JBL 5000 SERIES................................................................................................................................2
1.1 THANK YOU FOR PURCHASING...............................................................................................................2
2. SYSTEM CONFIGURATIONS..........................................................................................................3
2.1 LOW FREQUENCY SECTION...................................................................................................................3
2.2 MID FREQUENCY SECTION....................................................................................................................4
2.3 HIGH FREQUENCY SECTION ..................................................................................................................4
3. SYSTEM SUPPORT MECHANISM - BRACKET ASSEMBLY......................................................6
3.1 ASSEMBLY INSTRUCTIONS....................................................................................................................7
4. DIGITAL SYSTEM CONTROL ......................................................................................................11
4.1 JBL DSC CONTROLLERS....................................................................................................................11
4.2 DSC BLOCK DIAGRAM.......................................................................................................................11
4.3 THREE CHANNEL CONFIGURATION (LEFT, CENTER, RIGHT).................................................................12
4.4 FIVE CHANNEL CONFIGURATION (LEFT, LEFT-EXTRA, CENTER, RIGHT-EXTRA, RIGHT)........................ 12
4.5 SUBWOOFER CHANNEL .......................................................................................................................12
5. SYSTEM CONNECTIONS............................................................................................................... 13
5.1 SYSTEM BLOCK DIAGRAMS .................................................................................................................13
5.2 WIRE RECOMMENDATIONS..................................................................................................................14
5.3 SPEAKER CONNECTIONS .....................................................................................................................14
6. POWER AMPLIFIER REQUIREMENTS ......................................................................................16
7. SPEAKER PLACEMENT ................................................................................................................18
7.1 VERTICAL PLACEMENT....................................................................................................................... 18
7.2 HORIZONTAL SPACING .......................................................................................................................18
7.3 DISTANCE FROM SPEAKER TO SCREEN .................................................................................................19
7.4 HORN ARRAY AIMING........................................................................................................................19
7.4.1 Vertical Plane .............................................................................................................................19
7.4.2 Horizontal Plane.........................................................................................................................19
7.5 BAFFLE LOADING ...............................................................................................................................20
7.6 FULL BAFFLE WALL...........................................................................................................................20
8. SPECIFICATIONS........................................................................................................................... 22
8.1 5671 SCREEN CHANNEL SYSTEM ........................................................................................................ 22
8.2 5672 SCREEN CHANNEL SYSTEM ........................................................................................................ 23
8.3 5674 SCREEN CHANNEL SYSTEM ........................................................................................................ 24
9. WARRANTY INFORMATION........................................................................................................25
JBL Cinema 5000 Series - User’s Guide page 1
P/N 981-00040-00 C5KUG 1M 6/97
Cinema 5000 Series Screen Channel Systems
CE
User’s Guide
1. JBL 5000 Series
1.1 Thank you for purchasing...
The Cinema 5000 Series Screen Channel systems represent the best of JBL loudspeaker technology for
cinema screen channel applications. Each 5000 Series screen channel system is a three-way, tri-amplified
design, intended to provide superior sound quality over many years of reliable service.
There are three models of 5000 Series Screen Channel systems. All three use the same low frequency,
mid-range, and high frequency drivers. Each system is scaled for a different room size. Therefore, they
only differ in the number of low frequency transducers and physical size of the mid and high frequency
horns.
Each section of the 5000 Series Screen Channel system is optimized for the frequency range over which it
operates. JBL Optimized Aperture horns and drivers provide ultra-low distortion reproduction for today’s
demanding digital soundtracks.
Your 5000 Series screen channel system is shipped in two cartons. One carton contains the low frequency
section, and the second carton contains the mid and high frequency horns, drivers, mounting bracket and
hardware.
Please be sure to save this user’s manual as a reference guide in the event that this system is moved, reinstalled, or a change in ownership occurs.
JBL Cinema 5000 Series - User’s Guide page 2
P/N 981-00040-00 C5KUG 1M 6/97
Cinema 5000 Series Screen Channel Systems
CE
User’s Guide
2. System Configurations
2.1 Low Frequency Section
The low frequency section of your system uses JBL 2226 Vented Gap Cooled low frequency drivers.
The 5671 Screen Channel system features the 5641 low frequency section,
incorporating a single JBL 2226H 15” (380 mm) driver.
Connections are made to two screw type terminals located on the top of the enclosure.
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The 5672 Screen Channel system features the 4648A low frequency section,
incorporating two JBL 2226H 15” (380 mm) drivers.
Connections are made to two screw type terminals located on the rear of the enclosure.
The 5674 Screen Channel system features the 5644 low frequency section,
incorporating four JBL 2226H 15” (380 mm) drivers, in a unique DiamondQuad
array. This array minimizes destructive driver interaction effects while maximizing
output and pattern control.
Connections are made to four screw type terminals located on the top of the enclosure.
Each driver pair is wired in parallel, resulting in two 4 ohm loads per enclosure.
VERTICAL
pair wired in
parallel
HORIZONTAL
pair wired in
parallel
JBL Cinema 5000 Series - User’s Guide page 3
P/N 981-00040-00 C5KUG 1M 6/97
Cinema 5000 Series Screen Channel Systems
CE
User’s Guide
2.2 Mid Frequency Section
The mid frequency section on all systems feature Optimized Aperture horn/driver technology for the lowest
possible distortion. The 2392 or 2392-S midrange Optimized Aperture horns provides outstanding
midrange pattern control. The 2490H midrange compression driver has a 4” voice coil and titanium
diaphragm with a 3” exit, and is optimized for response between 250 Hz and 4000 Hz.
The 5671 Screen Channel system features the 2392-S 30” horn, which is smaller in
vertical and horizontal dimension to fit within the profile of the low frequency section,
while maintaining midrange pattern control for smaller rooms.
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The 5672 and 5674 Screen Channel systems both feature
the 2392 44” horn, which maintains midrange pattern
control for the largest rooms.
2.3 High Frequency Section
The high frequency section on all systems incorporate Optimized Aperture horn/driver technology for the
lowest possible distortion. The HF driver is the JBL 2451H high frequency compression driver with
neodymium-magnet structure. The 2451H is our most advanced compression driver, using our unique
radial-ribbed 4” diaphragm and edgewound voice coil.
The 5671 Screen Channel system uses the 2332 90°x 40° horn, mounted in a 3/8”
plywood baffle board. The width of the baffle matches the width of the LF section and
HF horn to make baffle wall installation easier.
JBL Cinema 5000 Series - User’s Guide page 4
P/N 981-00040-00 C5KUG 1M 6/97
Cinema 5000 Series Screen Channel Systems
CE
User’s Guide
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The 5672 and 5674 Screen Channel systems both use the
2352 90°x 40° horn, mounted in a 3/8” plywood baffle
board. The width of the baffle matches the width of the
MF horn to make baffle wall installation easier.
JBL Cinema 5000 Series - User’s Guide page 5
P/N 981-00040-00 C5KUG 1M 6/97
Cinema 5000 Series Screen Channel Systems
CE
User’s Guide
3. System Support Mechanism - Bracket Assembly
The horn array bracket supplied with your 5000 Series Screen channel systems provides a simple way to
mount and install the mid and high frequency horns and drivers on top of the low frequency section.
For the 5672 and 5674 systems, the bracket assemblies are identical -- model number HB74.
The 5671 system is shipped with a smaller version bracket with identical functions and features -model number HB71.
baffle board
baffle board
2352 HF horn
front strap
screw through
baffle board, into
C-channel upright
rail
back strap
upright rails
(“C” channel)
yoke
(connects to throat section)
upright supports
(tilt adjustment bar)
Front, rear, and side views of 5672/5674 bracket assembly
2332 HF horn
front strap
screw through
baffle board,
into upright rail
back strap
upright rails
(“C” channel)
yoke
(connects to throat section)
upright supports
(tilt adjustment bar)
2332
HF horn
mounting
plate
throat
section
pre-set tilt
positions
2352
HF horn
throat
section
pre-set tilt
positions
mounting
plate
Front, rear, and side views of 5671 bracket assembly
Once assembled, the horn array is adjusted for proper tilt angle using one of the available tilt angle holes,
which are located on the upright rail sections of the bracket assembly. Each hole represents an increment
of 2.5 degrees forward tilt. A maximum of 10 degrees forward tilt can be safely achieved without risk of
exceeding the array’s center of gravity.
Ten degrees of tilt should be the maximum required for today’s cinema designs, however the specific tilt
angle depends on the room dimensions and floor slope of the seating area.
See section 7.4, “Horn Array Aiming”, for more information on proper aiming once assembly is complete
and ready for installation.
JBL Cinema 5000 Series - User’s Guide page 6
P/N 981-00040-00 C5KUG 1M 6/97
Cinema 5000 Series Screen Channel Systems
CE
User’s Guide
In the carton containing the midrange and high frequency components, you should find the following items:
• Steel mounting plate
• Steel L-channel with hinges
• Upright supports for tilt adjustment (2)
• Yoke
• Horn baffle board
• Upright rail C-channels (2)
• Front strap
• Back strap
• Hardware for assembly
count item
(34)* 1/4-20 x 7/8 large button head, Philips screw, black
(*5671 kit includes 24 pcs)
(34)* 1/4 spring lock washer, regular, black
(*5671 kit includes 24 pcs.)
(44)* 1/4 flat washer, type A, black
(*5671 kit includes 34 pcs.)
(10) 1/4-20 hex nut
(4) 5/16-18 x 5/8 large button head, Philips, black
(4) 5/16 spring lock washer, type A
(8) 5/16 flat washer, type A
(4) 5/16-18 hex nut
(6) #12-24 x 5/8 large button head, Philips screw
(8) #12 flat washer, type A
(6) #12 spring lock washer, regular
(6) #12-24 hex nut
3.1 Assembly Instructions
STEP 1.
Make sure you have all of the pieces listed above. If items are missing, please contact your JBL
Professional Representative immediately, or call JBL Professional at (818) 894-8850, ask for Customer
Service & Parts. Outside the United States, please contact your JBL Professional Authorized Distributor.
JBL Cinema 5000 Series - User’s Guide page 7
P/N 981-00040-00 C5KUG 1M 6/97
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