JBL JRX218S

JBL Professional JRX218S 18-Inch Passive Subwoofer Instruction Manual

Model: JRX218S

1. Inleiding

This manual provides essential information for the proper setup, operation, and maintenance of your JBL Professional JRX218S 18-Inch Passive Subwoofer. Please read this manual thoroughly before using the product to ensure optimal performance and safety. The JRX218S is designed to deliver powerful low-frequency sound for various professional audio applications.

JBL Professional JRX218S 18-Inch Passive Subwoofer front view

Figuur 1: Voorzijde view of the JBL Professional JRX218S 18-Inch Passive Subwoofer.

2. Belangrijke veiligheidsinformatie

  • Lees de instructies: Bewaar deze instructies voor toekomstig gebruik.
  • Let op waarschuwingen: Volg alle waarschuwingen op het product en in de gebruiksaanwijzing.
  • Water en vocht: Gebruik dit apparaat niet in de buurt van water.
  • Schoonmaak: Alleen schoonmaken met een droge doek.
  • Ventilatie: Blokkeer geen ventilatieopeningen. Installeer volgens de instructies van de fabrikant.
  • Warmte: Installeer het apparaat niet in de buurt van warmtebronnen zoals radiatoren, warmteroosters, kachels of andere apparaten (inclusief ampwarmtebronnen) die warmte produceren.
  • Netsnoerbeveiliging: Zorg ervoor dat er niet op het netsnoer kan worden gelopen en dat het niet kan worden afgekneld, vooral bij stekkers, stopcontacten en het punt waar het snoer uit het apparaat komt.
  • Accessoires: Gebruik uitsluitend de door de fabrikant gespecificeerde toebehoren/accessoires.
  • Montage: Gebruik alleen met de kar, standaard, driepoot, beugel of tafel die door de fabrikant is gespecificeerd of die bij het apparaat wordt verkocht. Wanneer een kar wordt gebruikt, wees dan voorzichtig bij het verplaatsen van de kar/apparaatcombinatie om letsel door kantelen te voorkomen.
  • Onderhoud: Laat alle servicewerkzaamheden over aan gekwalificeerd servicepersoneel. Service is vereist wanneer het apparaat op enigerlei wijze is beschadigd, zoals wanneer het netsnoer of de stekker is beschadigd, er vloeistof is gemorst of er voorwerpen in het apparaat zijn gevallen, het apparaat is blootgesteld aan regen of vocht, niet normaal werkt of is gevallen.

3. Wat zit er in de doos?

Upon opening the packaging, verify that all components are present and in good condition:

  • JBL Professional JRX218S 18-Inch Passive Subwoofer
  • Gebruikershandleiding (dit document)

Als er onderdelen ontbreken of beschadigd zijn, neem dan onmiddellijk contact op met uw dealer.

4. Installatiehandleiding

4.1 Plaatsing

For optimal bass response, place the JRX218S subwoofer on a stable, flat surface. Corner placement can often enhance bass output, but experiment with different positions to find the best sound for your environment. Ensure adequate space around the unit for proper ventilation.

4.2 Verbindingen

The JRX218S is a passive subwoofer and requires an external ampversterker. Sluit uw amplifier's output to one of the SpeakON inputs on the rear panel of the subwoofer. The two SpeakON inputs are wired in parallel, allowing for easy daisy-chaining to another passive speaker or subwoofer. Ensure your amplifier can safely drive a 4-ohm load.

JBL Professional JRX218S 18-Inch Passive Subwoofer rear panel with SpeakON inputs

Figure 2: Rear panel showing SpeakON input connectors.

4.3 Paalmontage

The subwoofer features a top-mounted, cast aluminum 35 mm pole mount receptacle. This allows you to mount a mid/high speaker cabinet directly above the subwoofer using an optional SS3BK pole (sold separately), creating a compact and integrated full-range sound system. Ensure the pole and mounted speaker are stable and secure.

JBL Professional JRX218S 18-Inch Passive Subwoofer with a pole-mounted speaker

Figure 3: JRX218S with an optional pole-mounted speaker (speaker and pole not included).

5. Gebruiksaanwijzing

5.1 Vermogensafhandeling

The JRX218S has a continuous power handling capacity of 350 Watts and a peak power handling of 1400 Watts. It is crucial to match your amplifier's output to these specifications to prevent damage to the subwoofer. Overpowering or underpowering can lead to poor performance or component failure.

5.2 Impedance and Frequency Response

The subwoofer operates at an impedance of 4 ohms. Its frequency range is 34Hz-250Hz (-10dB), with a frequency response of 53Hz-250Hz (±3dB). This range is optimized for deep bass reproduction.

5.3 Systeemintegratie

When integrating the JRX218S into a larger PA system, use an external crossover to send only low-frequency signals to the subwoofer. This ensures efficient operation and prevents the subwoofer from attempting to reproduce frequencies outside its optimal range, which can lead to distortion and reduced performance.

6. Onderhoud

6.1 Reinigen

To maintain the appearance and performance of your subwoofer, regularly wipe the exterior with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or excessive moisture, as these can damage the carpet covering and internal components.

6.2 Enclosure and Grille

The rugged enclosure is constructed from 19 mm (.75 in) Medium Density Fiberboard (MDF) and covered in black carpet. The 18-gauge perforated steel grille protects the speaker components. Inspect these periodically for any signs of damage. Minor scuffs on the carpet can often be brushed out. Do not attempt to remove the grille unless you are qualified service personnel.

7. Probleemoplossing

ProbleemMogelijke oorzaakOplossing
Geen geluidsuitvoer
  • Incorrect wiring or loose connections.
  • AmpDe versterker is niet ingeschakeld of defect.
  • Crossover settings incorrect (no low frequencies sent).
  • Check all SpeakON connections between ampversterker en subwoofer.
  • Verifiëren ampVersterkervermogen en functionaliteit.
  • Ensure your audio processor or mixer is sending low-frequency signals to the subwoofer output.
Vervormd geluid
  • Overdriving the subwoofer (too much power).
  • Amplifier knippen.
  • Onjuiste crossoverfrequentie.
  • Reduce input level to the ampversterker of subwoofer.
  • Rekening amplifier gain settings; ensure it's not clipping.
  • Adjust crossover to send only appropriate low frequencies to the subwoofer.
Zwakke of onvoldoende bas
  • Subwoofer phase issue.
  • Onjuiste plaatsing.
  • Amplifier not powerful enough.
  • Als je amplifier or processor has a phase switch, try inverting the phase.
  • Experiment with different subwoofer placements (e.g., closer to a wall or corner).
  • Zorg ervoor dat uw amplifier provides sufficient power for the subwoofer's continuous rating.

8. Technische specificaties

FunctieDetail
ModelJRX218S
LuidsprekertypePassieve subwoofer
Diameter woofer18 inch
Power Handling (Continuous/Peak)350W / 1400W
Impedantie4 Ohm
Frequentiebereik (-10dB)34Hz - 250Hz
Frequentiebereik (±3dB)53Hz - 250Hz
Maximale piek SPLGeluidsniveau 133 dB
Connectiviteit2 x SpeakON NL-4 (parallel)
Behuizingsmateriaal19 mm (.75 in) MDF with black carpet covering
Rooster18-gauge perforated steel
Pole MountTop-mounted, cast aluminum 35 mm receptacle
Afmetingen (H x B x D)23.5" x 20.3" x 22" (597 mm x 516 mm x 559 mm)
Gewicht71 kg (32.5 lbs)
JBL Professional JRX218S 18-Inch Passive Subwoofer dimensions diagram

Figure 4: Dimensions of the JRX218S subwoofer.

9. Garantie en ondersteuning

9.1 Garantie-informatie

The JBL Professional JRX218S 18-Inch Passive Subwoofer comes with a manufacturer's limited warranty. Please refer to the warranty card included with your product or visit the official JBL Professional webRaadpleeg de website voor gedetailleerde voorwaarden. Bewaar uw aankoopbewijs voor garantieclaims.

9.2 Klantenservice

For technical assistance, service, or further inquiries, please contact JBL Professional customer support. Contact details can typically be found on the official JBL webwebsite of in de productverpakking.

© 2024 JBL Professional. Alle rechten voorbehouden.

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