This is an automatic translation by software: Hello, I'm interested in the JBL JRX 225 Passive Speaker. I understand that it has 2x15", but how many ohms? And what material is the speaker made of?

Impedance 4 ohms nominal Enclosure: 19mm thick MDF (Medium Density Fiberboard), glued and mechanically fastened for rigidity and acoustic performance Front grille: 18 gauge perforated steel, powder coated Handles: anti-resonance steel Speakers: Bass: 2 x JBL M115-8A with 64 mm edgewound voice coil High: JBL 2414H-C with 25 mm polymer diaphragm, mounted on Progressive Transition waveguide

JBL JRX 225 Passive Loudspeaker

4.95

14 x rated

Brand: JBL

Product code: 213278 (JBL JRX225)

JBL JRX 225 Passive Loudspeaker

4.95

14 x rated

Brand: JBL

Product code: 213278 (JBL JRX225)

£621

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JBL JRX 225 Passive Loudspeaker

£621

The JRX225 is a portable, dual fifteen-inch, two-way speaker system designed specifically for applications in live music performance and music playback.

Woofer: 15"
Tweeter: 1"
Тype: 2 Bandwidth
Power: 2000 W

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JBL JRX 225 Passive Loudspeaker

The JRX225 is a portable, dual fifteen-inch, two-way speaker system designed specifically for applications in live music performance and music playback.

Dual JBL low frequency drivers with a 64 mm (2.5 in) diameter edgewound ribbon voice coil which provides more crosssectional wire area in the voice coil gap than round wire designs, for greater efficiency and power handling.
JBL 2414H-C 25 mm (1 in) polymer diaphragm compression driver improves high frequency performance as well as system reliability.
The advanced network topology crossover design shapes frequency response and delivers coherent summation in the crossover region.
A "Quasi 3-Way" design offers the extra bass for which a dual fifteen system is designed, but without sacrificing performance in the critical mid-range. The upper woofer produces mid-frequencies and bass, while the lower woofer concentrates on bass only. The reduction in mid-range phase cancellation greatly improves midrange sound quality and coverage.
High-voltage capacitors and inductors with massive cores and heavy gauge wire enable the crossover network to handle high power without saturating.
Progressive Transition™ high frequency waveguide provides superior coverage control, reduced distortion, and smoother frequency response.
The rugged, acoustically superior enclosure is constructed from 19 mm (.75 in) MDF (Medium Density Fiberboard) using advanced adhesives and mechanical fastener technology for extreme durability and improved low-frequency performance.
SonicGuard™ protects the highfrequency driver from excess power without interrupting the performance.
Non-resonant, all-steel handles are used.
Attractive 18-gauge perforated, steel grille protects components from damage.

I have a remark regarding the description

Woofer: 15"

Thanks to 15" bass woofer, you will enjoy deep, rich and dynamic bass that adds a new dimension to your sound. This woofer is specially designed to offer clean and precise bass performance.