JBL 2360b Wp

User Manual: JBL JBL - Manuals+

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JBL Professional White Paper

New 4675C-HF with 2360B

• New High-Frequency Assembly with new Horn and

Bracket

• Resonances Controlled by JBL Patent Pending Co-

Molding Process

• Improved Amplitude and Time/Phase Response

• Precise Horizontal and Vertical Pattern Control

• New Bracket Design Simplifies Assembly and

Adjustment

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2360B Attributes

JBL continuously pursues new materials and processes for both new products,

and to improve existing products. An example is the 2360B re-designed to

provide better and more consistent performance by utilizing close tolerance

molding technology and materials. JBL developed a patent pending co-molding

process to apply SMC technology to acoustic applications. SMC (Sheet Molding

Compound) is a molding process developed and used extensively by the

automotive industry.

The results are not only a more “finished” appearance, but also include more

precise dimensions that provide improved, more uniform, pattern control and

frequency response.

The following measurements compare the aluminum throat, fiberglass bell

version of the 2360A with the new all SMC 2360B. All measurements were

taken under identical conditions.

2360A Frequency Response

2360B Frequency Response

Note both the frequency response and impedance are smoother.

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2360A Beamwidth

2360B Beamwidth

These Beamwidth curves show the new horn has much improved vertical control

in the 600Hz to 1.2kHz range. The horizontal coverage maintains control to the

highest frequencies.

2360A Directivity and “Q”

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2360B Directivity and “Q”

The improved coverage of the new horn is seen as more linear DI at 1 kHz and

above 10 kHz.

Impulse Response

2360A

2360B

These are the impulse response measurements for the old, and new horns. The

vertical scale is linear to show better damping (less ringing).

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2360A Horizontal On and Off axis Frequency Response

2360B Horizontal On and Off axis Frequency Response

These curves show the horn’s ability to provide pattern control to the highest

frequencies.

2360A Vertical On and Off axis Frequency Response

2360B Vertical On and Off axis Frequency Response

Between 500 Hz and 3 kHz shows much more uniform off axis response.

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2360A Horizontal Polar Response 2360B Horizontal Polar Response

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2360A Vertical Polar Response 2360B Vertical Polar Response