MODEL 1

Designed by Zenny Audio specifically for a desert listening event, the MODEL 1 produces a warm and accurate sound from a bold, modern enclosure. Jatoba Veneered Plywood is used to create specially shaped pyramid cabinets to maximize the performance of the JBL components; shaping an exterior that is sure to be the aesthetic focal point of any listening space. The unique pyramid and trapezoidal design ensures a consistent response across the entire listening range in both the three way top pieces and the subwoofer bases. Included are two 3-way units and two subwoofer bases designed to stand one atop the other for two matched pairs. 

These cabinets are designed not only to sound plesentaly detailed, but to serve as vanguard monuments to the listening experience they produce. Carefully crafted and finished from quality materials and extensively tested, these speakers are sure to be a long-term investment into quality listening and lasting design. In short: they’re hot.

hot

High Frequency Dome Radiator

Pure titanium was first used by JBL in the design of diaphragms for high frequency compression drivers. Recently, JBL has perfected a 25 mm titanium dome radiator which is capable of 30 watts power handling and can reproduce the frequency range from 3 kHz to 27 kHz. The unique “diamond surround” and ribbed dome structure of the model 035Ti HF unit provide control over secondary resonances, yielding absolutely flat axial response to the normal upper limits of today’s recording media. With a basic sensitivity of 92 dB, one watt at one meter, the 035Ti transducer exhibits virtually no dynamic compression.

Midrange Driver

The 125 mm (5 in) midrange driver used in the Model – 1 has a 25 mm ( I in) copper voice coil. The cone is made of felted paper with a special damping treatment to ensure smooth response. The basic sensitivity of the transducer is 94 dB, one watt at one meter, ensuring minimal dynamic compression at high acoustical output levels.

Low Frequency Driver

The 300 mm ( 12 in) diameter LF driver has a felted paper cone laminated with Aquaplas for smoothness in the upper range of its response. The voice coil is 75 mm (3 in) in diameter, and it is made of edge wound copper ribbon. Linearity of the LF driver is the result of careful attention to mechanical suspensions as well as Symmetrical Field Geometry (SFG). SFG reduces harmonic distortion by producing identical magnetic flux fields on each side of the magnetic gap. This ensures that the voice coil will intersect equal flux lines for both positive and negative excursions of the cone. A flux stabilizing ring placed around the pole piece reduces the effects of magnetic flux field modulation. Overall, SFG reduces distortion to about one-tenth the value found in conventional magnetic structures. A cast aluminum frame ensures mechanical integrity under the most demanding operating conditions.

Dividing Network

The complex network design produces a seamless system frequency response through the critical crossover regions at 800 Hz and 4.5 kHz. The rolloff slopes are precisely determined to result in smooth axial and power response.

High quality polypropylene and polystyrene capacitors are utilized as “bypass capacitors” in parallel with the larger network mylar capacitors. This design procedure linearizes energy storage in the larger capacitors, and the result is greater accuracy in the reproduction of transient signals.