JBL CINEMA TRAILER
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JBL
PROFESSIONAL
CINEMA PRODUCTS
Cinema 3000 Series
Cinema 3000 Series
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Narrow profile enclosures |
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Smaller rooms |
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Optimized SYSTEMS |
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3677 Screen Channel system |
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3678 Screen Channel system |
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3310 Surround |
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3635 Subwoofer |
3677 Screen Channel
3677 Screen Channel
System
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POSITION: All-in-one system for small budgets, small theaters |
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APPLICATION: Screen channel in small size cinemas |
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KEY FEATURES: |
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Shallow profile |
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Built-in passive network with HF
protection |
3678 Screen Channel
System
3678 Screen Channel
System
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POSITION: THX system for small-medium rooms |
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APPLICATION: Screen channel in small-medium size cinemas |
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KEY FEATURES: |
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Shallow profile |
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Single VGC 15” |
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Bi-Radial horn and medium format driver |
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Bi-amp AND Built-in passive network
with HF protection |
3310 Surround
3310 Surround
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POSITION: Big performance, small cost |
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APPLICATION: Surround arrays in budget
theaters |
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KEY FEATURES: |
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2-way passive |
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75 watts power handling |
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89 dB sensitivity |
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Built-in passive network with HF
protection |
3635 Subwoofer
3635 Subwoofer
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POSITION: Low cost subwoofer |
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APPLICATION: For small cinemas |
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KEY FEATURES: |
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Single 300 watt 18” woofer |
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Shallow profile (15”) |
Cinema 4000 Series
Cinema 4000 Series
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4675-4(8)LF Screen Channel System |
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4675C Screen Channel System |
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4670D Screen Channel System |
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4641 Subwoofer |
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4642A Subwoofer |
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4645C Subwoofer |
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8330A Surround |
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8340A Surround |
4675C-4(8)LF Screen
Channel System
"POSITION:"
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POSITION: JBL’s finest two-way THX system |
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APPLICATION: Screen channel in large size cinemas |
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KEY FEATURES: |
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Dual 600 watt VGC 15” woofers |
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Large format 2” compression driver |
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Large format Bi-Radial horn |
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Designed for biampification; available
in 4 or 8 ohm low frequency impedance for required amplifier matching |
4675C Screen Channel
System
4675C Screen Channel
System
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POSITION: Excellent pattern control in an economical passive system |
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APPLICATION: Screen channel in medium-large size cinemas |
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KEY FEATURES: |
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Dual 300 watt 15” woofers |
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Large format 2” compression driver |
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Large format Bi-Radial horn |
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Built-in passive network |
4670D Screen Channel
System
4670D Screen Channel
System
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POSITION: Economical dual woofer system |
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APPLICATION: Screen channel in medium size cinemas |
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KEY FEATURES: |
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Dual 300 watt 15” woofers |
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Large format 100 mm (4 inch) diaphragm
compression driver |
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Built-in passive network |
4645C Subwoofer
4645C Subwoofer
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POSITION: JBL’s most powerful single driver subwoofer |
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APPLICATION: For any extended bandwidth cinema subwoofer application |
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KEY FEATURES: |
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Single Super VGC 800 watt 18” woofer |
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Usable freq. response to 18 Hz |
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THX Approved |
4641 Subwoofer
4641 Subwoofer
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POSITION: JBL’s lower powered single driver subwoofer |
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APPLICATION: For any extended bandwidth cinema subwoofer application |
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KEY FEATURES: |
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Single VGC 600 watt 18” woofer |
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Usable freq. response to 25 Hz |
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THX Approved |
4642A Subwoofer
4642A Subwoofer
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POSITION: JBL’s dual 18” subwoofer
capable of carrying 1200 watts continuous power |
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APPLICATION: For any cinema application
where extended subwoofer bandwidth is desired in a dual enclosure |
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KEY FEATURES: |
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Dual VGC 600 watt 18” woofers |
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Usable freq. response to 22 Hz |
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THX Approved |
8330A Surround System
8330A Surround
8340A Surround System
8340A Surround
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POSITION: True digital power handling
capability |
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APPLICATION: Surround arrays in digital
equipped cinemas |
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KEY FEATURES: |
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250 watts power handling |
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96 dB sensitivity |
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THX Approved |
Features JBL Custom
ScreenArray Systems
5000 Series Cinema
Systems
5000 Series Cinema
Systems
5000 Series
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Screen Channel Systems |
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5671 for small rooms (up to 250 seats) |
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45,000 cu ft (1216 cu m) |
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5672 for medium rooms (up to 500 seats) |
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100,000 cu ft (2700 cu m) |
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5674 for large rooms (up to 1200 seats) |
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225,000 cu ft (6080 cu m) |
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High Power Surround (use 8340A) |
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Subwoofer (use 4645C) |
5000 Series Technical
Attributes
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Optimized Aperture HF horn/driver
design |
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8 - 10 dB lower 2nd harmonic
distortion! |
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Mid-Range horn and driver |
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Pattern control |
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True mid-range compression driver,
model 2490 |
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VGC 15” LF transducers |
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Digital Signal Processing |
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DSC Family with factory pre-set tunings
for 5000 Series |
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Radiation patterns matched at crossover |
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Smooth transitions in system power
response |
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Uniform coverage in the cinema |
DSC 260 Digital
Controller
5674
5672
5671
Academy of Motion Picture
Arts and Sciences
Features JBL Professional 5674 Systems
JBL ScreenArray® Three-Way
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The JBL ScreenArray®
three-way loudspeaker systems incorporate the latest advances in JBL’s
research into: |
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High performance transducers |
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Multi-band Waveguides |
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Crossover designs |
ScreenArray
Advanced Design Features
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6 Key Technological Advances: |
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1.
“Three-Way” Design |
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2.
“Tapered” Midrange Line Array |
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3.
Filtered Array Technology |
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4.
Waveguide loaded cone-type midrange transducers |
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5.
Screen Spreading Compensation |
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6.
Asymmetrical Midrange and High Frequency Waveguides |
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JBL ScreenArray®
JBL ScreenArray®
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3632 ScreenArray® System |
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Designed for small to medium
auditoriums |
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Bi-amp or Tri-amp versions available |
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3632-T (Tri-amp) is THX- Approved |
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30 Hz to 20 kHz frequency range |
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129 dB peak SPL |
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Multi-band Waveguide |
4632 ScreenArray
TWO-WAY
ScreenArray®
Systems
The new Two-Way
ScreenArray® Systems provide smooth and accurate reproduction of
cinema soundtracks in a compact
and VERY cost effective package
Two-Way ScreenArray®
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Low cost cinema systems utilizing the
most advanced technology in cinema today |
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The low distortion ScreenArray®
horn combined with JBL low frequency technology provides clear, accurate
reproduction of the mid/high frequency information |
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Provides all the benefits of extended
high frequency response and controlled coverage at a Very Competitive Price |
3622N, 2-Way ScreenArray®
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Features: |
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JBL 2374 ScreenArray® horn
with Screen Spreading Compensation |
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JBL 2418H-1, High Frequency Compression
Driver |
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NEW 3639 Dual 15” Low Frequency System |
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Fully Passive Operation utilizing a
computer optimized crossover network |
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Pre-assembled Components to reduce
field assembly time for lower installation cost |
"Features:"
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Features: |
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JBL 2384 ScreenArray® HF
horn with Screen Spreading Compensation |
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JBL 2430H, High Frequency Driver |
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JBL 4639 Dual 15” Low Frequency System |
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Bi-Amplified design |
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Pre-assembled Components to reduce
field assembly time for lower installation cost |
"Features:"
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Features: |
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All of the features of the 4622 Two Way
ScreenArray® System in a FULLY PASSIVE SYSTEM design |
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4622N utilizes a sophisticated
crossover network, developed using computer optimization technology providing
seamless transition. This results in excellent power response and controlled
directivity |
JBL ScreenArray®
Cinema Systems
The most advanced, cost effective
Screen-channel systems in the world
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4632-T 3-Way ScreenArray®
Tri-amplified (THX) |
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3632-T 3-Way ScreenArray®
Tri-amplified (THX) |
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4632 3-Way ScreenArray®
Bi-amplified |
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3632 3-Way ScreenArray®
Bi-amplified |
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4622 2-Way ScreenArray®
Bi-amplified |
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4622N 2-Way ScreenArray®
Passive |
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3622N 2-Way ScreenArray®
Passive |
Television Academy
Leonard H. Goldenson Theatre
Theater Systems
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Selecting Screen Loudspeakers, Surround Loudspeakers and
Subwoofers |
Screen channel
requirements
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15” LF drivers in the 95 - 97 dB SPL
sensitivity range (1 Watt at 1 meter) |
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LF power handling in the 300-watt range
and… |
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HF systems with matching output
capability |
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Low frequency driver
count
(per “screen” channel)
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For houses with 150 seats or less,
specify systems with one LF driver per channel |
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For houses with 150-to-500 seats,
specify systems with two LF drivers per channel |
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For houses with more than 500 seats,
specify systems with four LF drivers per channel |
Low Frequency
Applications
Placement of Screen
Channels
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Space horizontally to match the widest
picture format |
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Elevate systems so that the HF sections are up about 2/3 the screen
height |
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Place the systems so that the HF
elements are as close as possible to the screen |
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Paint matte black any reflecting
surfaces |
Elevated Speakers
“Toe-in” of screen
loudspeakers
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Regardless of whether the screen is
curved or not, “toe” the outside loudspeakers inward so that their on-axis
extensions intersect at a point 2/3 of the distance to the back wall |
Horizontal “Spacing” of
Screen Channel Systems
Downward tilt of HF
elements
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Tilt the HF elements downward so that
they point at ear level at a distance 2/3 toward the back of the house |
Surround channel
requirements
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Moderate power surrounds (dome
tweeter): |
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Sensitivity: 91 dB SPL (1 W at 1 m) |
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Power Rating: 100 watts continuous |
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High power surrounds (compression
driver): |
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Sensitivity: 96 dB SPL (1 W at 1 m) |
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Power Rating: 250 watts continuous |
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Maximum output difference: 9 dB |
Which surround model to
choose?
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For houses with seating no greater than
about 200 patrons, use either moderate or high power surrounds |
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How many surrounds?
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In most houses the ideal number will be
between 12 and 16 |
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Normally, specify at least 4 surrounds
on back wall |
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An exception here is in very small
houses, where there may be two on
the back wall. In this case, a total of 8 surrounds may suffice (3 on
each side; 2 at back) |
How to position the
surrounds
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The front-most surrounds are normally
2/3 the distance from the back wall to the screen |
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The back-most side wall surrounds
should be about 9 - 12 feet from the back wall |
Surround height and
aiming
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Height should normally be 12 - 15 feet
above the floor |
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The high frequency axis should be aimed
at the seats on the opposite wall |
Be prepared for Surround
EX
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Ideally, the three surround channels
should have the same output capacity, and this calls for an equal number of
loudspeakers per channel |
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When possible, specify surrounds in a
quantity divisible by 6 (12, 18 or 24) to ensure optimum paralleling |
Selecting Surround
Amplifiers
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Choose stereo amplifiers with a
generous 4-ohm power rating that equals twice the individual surround
loudspeaker rating |
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For example, if using high-powered
surrounds (250 watt @ 8 ohm), select a stereo amplifier that can deliver 500
watts per channel into 4-ohms |
If you have followed
these rules…
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Surround coverage in the back 2/3 of
the house will be uniform to ±2 dB |
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Fine tuning “drive” levels may further
improve uniformity |
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In deep houses, be prepared to “zone”
surrounds with delay to maintain proper front - back perspectives |
Subwoofer channel
requirements
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Use 18-inch diameter drivers |
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Sensitivity: should be no less than
about 97 dB, |
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(1 W, at 1 m) |
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Power ratings per driver should be no
less than about 400 watts Continuous |
How many subwoofer
drivers
are needed?
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A safe rule is to specify one sub driver
for each 700 m3 of house volume |
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Always round up; if your calculations then indicate 5 ˝
subs, use 6! |
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You can always specify more subs for
greater impact |
Subwoofer powering
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We recommend driving each subwoofer
transducer with its own amplifier channel |
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Choose amplifiers with an output rating
commensurate with each transducer at its rated impedance |
Subwoofer mounting
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Mount the sub-woofers at the base
of the screen, as close as possible to the floor and
wall intersection |
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Cluster the individual units together
as tightly as
possible in order to take maximum advantage of their “mutual coupling” |
JBL
PROFESSIONAL
CROWN INTERNATIONAL
CINEMA APPLICATIONS
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JBL CINEMA TRAILER