JL Audio ZR650-Csi

Features and Specs

Product Research

Woofer Features
Tweeter Features
Crossover Features

Woofer Features

Baskets: The Evolution ZR component speakers feature proprietary cast aluminum woofer baskets, designed to provide maximum rear open area while also incorporation JL Audio's patented "Elevated Frame" cooling system. This cooling technology, also found on W7 and W6v2 subwoofers, allows air to flow directly across the top plate and onto the voice coil windings to greatly improve linearity at all listening levels.

Motor Structure: Within the DMA (Dynamic Motor Analysis) optimized motor structure, the CNC-machined back plate, pole piece, and top plate elements offer a degree of precision not possible with conventional forged or stamped parts. The ultra-thin gauge voice coil is treated with proprietary, high-temperature adhesives and wound on an aluminum former to further improve thermal transfer, reliability, and linearity at high power levels.

Woofer Cones: The cone and suspension elements were designed and manufactured by the world-famous Dr. Kurt Müller & Co of Germany. The speakers feature low-mass, mineral-filled polypropylene cones with butyl rubber surrounds. The cone and surround are inherently well damped to deliver an uncolored, neutral midrange without any coloration. The speakers are also equipped with symmetrical-roll, hybrid-weave spiders.

Tweeter Features

Aluminum Dome: The ZR component system tweeters utilize a 1" ultra-light aluminum dome, delicately suspended with a synthetic rubber, positive-roll surround to damp fatiguing ringing and preserve high-frequency definition. A Nomex voice coil former is used to further reduce mass.

Neodymium Magnets: The high-energy neodymium wafer magnet and machined field structures provide a dynamically stable field for the low-mass voice coil.

Performance: Each pair of ZR tweeters is tested and matched to within 1 dB of JL Audio's reference curve to ensure optimum system performance.

Mounting Options: The tweeters come mounted in enhanced flush mount fixtures with silver trim and a JL Audio badge. The system also comes with compact flush-mount fixtures and angled, surface-mount fixtures. The mounting dimensions for each mounting option are as follows:

Crossover Features

Two-way Crossover System: The ZR component system utilizes a true 2-way crossover system:

• High Pass: On the tweeters is a second order Butterworth high-pass filter utilizing a top-quality, metallized polypropylene capacitor combined with a low-loss, 16-gauge, air-core inductor. Five tweeter level settings are selectable via jumper pins connected to a bank of super-premium, non-inductive, non-magnetic, 1% tolerance Mills resistors mounted to an extruded aluminum heat sink. Available levels are +1.5dB, Reference, -1.5dB, -3.0dB and -4.5dB.
• Low Pass: The low-pass section features a first order filter with four levels of user-definable midrange presence achieved via a custom-engineered, series-segmented, air core inductor. The midrange presence levels are selected via a heavy brass jumper bar mounted on each network's circuit board, permitting the user to tailor the response for a variety of mounting angles and listening environments. Levels include 1 (Low), 2, 3 (Reference), and 4 (High).

Barrier Strips: Connections to each crossover network are made via protected nickel-plated barrier strips with the option of standard or bi-wire/bi-amp input wiring (selectable with an internal jumper bar).

Dimensions: The ZR crossover systems have the following dimensions: Width=4.17", Height=5.86", Depth=1.696"

Connection Note: The ZR component system comes with no speaker wire. Instead, a number of spade connectors and quick slides are included in the hardware pack to be crimped onto speaker wire you provide.

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