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JBL JRX218S

JRX200 Series 18" passive subwoofer

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  • JBL JRX218S

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Our take on the JBL JRX218S

by Bob Bihlmayer
JBL Pro

Should I get a powered or non-powered sub?

For small-to-medium venue applications, a powered subwoofer will give you the low-end thrust your music deserves. These self-contained systems are designed to get the most output possible from their built-in amplifier and sub. So, when you're shopping, we suggest you pay more attention to the listed sound pressure level (SPL) ratings than the listed wattage ratings. For larger spaces and/or bass-heavy presentations, you'll need the power and projection you can only get from separate amplifier and sub. For a non-powered sub, you can safely use an amplifier whose continuous power output is rated up to double the rated program power capacity of the sub.

Big bottom

JBL's JRX200 loudspeaker line delivers the level of performance and quality you expect from JBL without cleaning out your savings account. The JRX 218S is a compact  passive subwoofer that can add serious power and impact to your PA system.

Way down

The JRX218S features a JBL low-frequency 18" driver with a cast frame and massive 3" voice coil in a ported enclosure. It will handle up to 350 watts continuous (or 1400 watts peak), and JBL recommends that you power this sub with an amplifier rated at between 350 and 700 watts. Properly amplified, this subwoofer will bring a whole new dimension to your performance, where the audience hears and feels the low notes.

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How low can you go?

JBL built the rugged enclosure from 3/4" medium density fiberboard (MDF), and it's covered in black carpet with an 18-gauge steel grille and non-resonant steel handles. A 36mm pole mounting socket allows the JRX218S to serve as the base for a mid/high speaker cabinet, like JBL's JRX215. The JRX218S offers the performance and durability JBL is known for in a rugged, compact package. See just how low you can go.

Highlights:

  • compact PA subwoofer
  • 4-ohm 18" speaker with cast frame and 3" voice coil
  • rugged MDF cabinet with steel grille and handles
  • top-mounted 36mm pole receptacle for stacking cabinets
Electronic features:
  • recommended amplifier power: 350-700 watts RMS at 4 ohms
  • frequency range: 55-300 Hz
  • max SPL: 127 dB
  • impedance: 4 ohms
  • crossover frequency: 2.2 kHz
  • two parallel Speakon inputs (inputs also accept 1/4" plugs)
General features:

Hands-on research from the Crutchfield Labs (what are the Labs?)

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What's in the box?

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

18" Woofer: The JBL JRX218 passive subwoofer system features an 18" woofer that can handle up to 350W continuous and 1400W peak.

Rugged Enclosure: The rugged, acoustically superior enclosure is constructed from 0.75" MDF (Medium Density Fiberboard) using advanced adhesives and mechanical fastener technology for extreme durability and improved low-frequency performance. An attractive 18AWG hexagon perforated, steel grille protects speaker components from damage. The enclosure also features non-resonant, all-steel handles.

Input/Output Connectors: The JRX218 sub is fitted with a Speakon NL4 connector and a 1/4" TS phone plug connectors. There is also a parallel identical Speakon NL4 and 1/4" connector that facilitates a loop-through connection so you can daisy-chain and power an additional subwoofer.

Pole-Mount Socket: A top mounted, cast aluminum 35mm pole mount receptacle can receive an optional SS3BK pole (sold separately) to facilitate use of the JRX218S as a base for a mid-high speaker cabinet.

 
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