JBL 2360A Bi Radial Horn

Bought and completely restored for a project that will not materialize - a PRIMO condition pair of JBL 2360A Horns completely restored - backside of horns have been sprayed with Polyutherane ( TRUCK BED LINER ) for a substantial upgrade in rigidity and sound quality.  The lenses and the throats pieces have been professionally repainted with an exotic Fine textured industrial grade paint.  These are better then new. 
Below from JBLs vast information about these 



2360A, 2365A, 2366A Horns

2360A, 2365A, 2366A 
Specification Sheet
(Adobe Acrobat, 1.16Mb)

2360A, 2365A, 2366A Flat-Front Bi-Radial® Constant Coverage Horns

Key Features:

• Uniform on and off axis frequency response
• Full horn loading to 350 Hz
• Precise horizontal and vertical pattern control
• Uncolored sound quality
• 49 mm (2 in.) throat entry

JBL Bi-Radial® horns* are designed to provide uniform on and off axis frequency response from below 500 Hz to beyond 16 kHz. The horn's unique geometry and relatively tall vertical mouth dimension ensure precise vertical, as well as horizontal, beamwidth control throughout the rated frequency band. Since both horizontal and vertical coverage patterns remain essentially constant, horn performance may be easily predicted for any given frequency or orientation. Cluster design, therefore, is simplified and the need for horn overlapping is minimized. Typical cluster performance problems such as lobing and comb filter effects are virtually eliminated.

Computer aided design techniques were used to derive the horn contours in the horizontal and vertical planes. Utilizing sidewall contours based on a polynomial power series formula, the patented horn design yields smooth response, low distortion, and even coverage. This design avoids the problems normally associated with horns that feature sharp flare transitions and flat sidewalls. The Bi-Radial® compound flare configuration of the horn provides constant coverage over defined, solid angles. 

Three horn models are available with nominal coverage angles of 90° x 40,° 60° x 40,° and 40° x 20° ( 6 dB, Horizontal x Vertical). All three feature 795 mm (31 5/6 in) square mouth dimensions to further simplify cluster design. In addition, the 90° x 40° and 60° x 40° horns are identical in length.

Each Bi-Radial® constant coverage horn is supplied with a cast aluminum throat that will accept JBL 2446, 2450, or 2485 50 mm (2 in) throat diameter compression drivers. 25 mm (1 in) throat diameter drivers may be mounted if a proper horn throat adapter is installed. Mounting tabs are provided on all four sides of the supplied horn throat and are located just behind the combined horn/driver center of gravity.

To ensure freedom from resonances, light weight, and superior structural strength, the horn bell is constructed of heavy duty, 7.5 mm (5/l6 in) thick, fiberglass reinforced plastic. Mounting holes are provided on the top wall of the bell to facilitate three-point hanging.

*U. S. Patent No 4,308,932 Foreign patents pending

  SPECIFICATIONS     HORN MODEL: 2360A2365A2366AThrow:Short Medium LongHORIZONTAL COVERAGE:   Angle Degrees ( -6 dB):90° (+5°,-20 )60° (+10°,10°)50° (+20,° -10°)Average Range:500 Hz - 16kHz500 Hz - 16kHz1000Hz - 16kHzVERTICAL COVERAGE:   Angle Degrees (- 6 dB):50° (+20,° -22°)40° ( +18°, 13°)277° (+8°,-7°)Directivity Index (D1):11.5dB (+3,-3dB)16dB (+6,-3.4dB)14.5dB (+15-1.5dB)Directivity Factor (Q):14 ( +14, -7)16 ( + 6,-3.4)28 ( + 12,-8)Average Range:500Hz- 16 kHz500Hz- 16 kHz 1000Hz- 16 kHzUsable Low Frequency Limit:300 Hz300 Hz200 Hz(using 2427, 2445, 2450):500 Hz 500 Hz 500 Hz (using 2485):350 Hz350 Hz300 HzAxial Pressure Sensitivity: Measured on axis in the far field with 1 watt input (4.0 volts RMS, 16 ohms) and referenced to 1 meter distance using the inverse square law. Listed sound pressures represent an average from 630 Hz to 4 kHz using the model 2445 or 2427 driver1 Watt /1 Meter  Axial Sensitivity:113 dB SPL115 dB SPL118 dB SPLCONSTRUCTION:   Horn Bell:Molded reinforcedurethane resinHorn Throat:Aluminum, sand cast (nominal 75mm [5/l6 in] wall thickness)OVERALL DIMENSIONS: (with throat attached)    Mouth Height:795 mm (31 5/,6 in)795 mm (31 5/,6 in)795 mm (31 5/,6 in)Mouth Width:795 mm (31 5/,6 in)795 mm (31 5/,6 in)795 mm (31 5/,6 in)Length:815 mm (32 7/64 in)815 mm (32 7/64 in)1390 mm(54 45/64 in)Net Weight:12.2 kg. (27 lb)11.3 kg (25 lb)16.3 kg (36 lb)Shipping Weight Horn: (Horn and horn throat are packed in one carton)26 kg (57.4 lb)11.3 kg (25 lb)16.3 kg (36 lb)Shipping Weight Throat: (Horn and horn throat are packed in one carton)4 kg (8.8 lb)2.6 kg (5.8 lb) 3 kg (6.8 lb)

 

JBL continually engages in research related to product improvement. New materials, production methods, and design refinements are introduced into existing products without notice as a routine expression of that philosophy. For this reason, any current JBL product may differ in some respect from its published description, but will always equal or exceed the original design specifications unless otherwise stated.

If you want to know more about this item or any of the other cool audio gear we list on Audiogon, call our world-class showroom in Southern California at 619-440-8237 and ask for our audio/electronics expert-in-residence, Peter. 

We have extensive experience integrating the elements of sophisticated audio systems. We build complete systems from the ground up, and have in-depth working knowledge not only of the pre-amps, amps, and power supplies that support our loudspeakers but of the component synergy that makes the difference between good and great. At PBN, "great" is our everyday standard.

We're shipping experts, too. If no original packaging is available, or we deem it inadequate, new custom-crating or boxing will be made for your valuable purchase. Our clientele is international, and we commonly ship our products worldwide. We have garnered excellent rates with several reliable shipping companies.

PBN accepts payment via MasterCard or Visa, personal check (must clear prior to shipping), cashiers check or wire transfer. PayPal is accepted on some purchases from established buyers only. California residents must pay 8.5% sales tax.

You can buy with the utmost confidence from us – a trusted veteran in the audio industry with 100% positive feedback earned over two decades of trading on this and other sites. We look forward to hearing from you.
NOTE: All used equipment is sold as-is, with no returns. We accurately describe the condition of any used items we sell, and will work to resolve any questions that may arise regarding your purchase. By purchasing this product, you are agreeing to these terms.