JBL Professional JRX218S 18-Inch Passive Subwoofer Instruction Manual

1. Introduzione

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.

Figura 1: Fronte view of the JBL Professional JRX218S 18-Inch Passive Subwoofer.

2. Impurtante Information Safety

• Leghjite l'Istruzzioni: Mantene queste istruzioni per riferimentu futuru.
• Fate attenzione à l'avvertimenti: Segui tutte l'avvertimenti nantu à u pruduttu è in l'istruzzioni di u funziunamentu.
• L'acqua è l'umidità: Ùn aduprate micca stu apparatu vicinu à l'acqua.
• Pulizia: Pulite solu cù un pannu seccu.
• Ventilazione: Ùn bluccate micca alcuna apertura di ventilazione. Installate secondu l'istruzzioni di u fabricatore.
• Calore: Ùn installate micca vicinu à fonti di calore cum'è radiatori, registri di calore, stufe, o altri apparecchi (cumpresu amplifiers) chì producenu calore.
• Prutezzione Power-Cord: Prutegge u cordone di alimentazione da esse camminatu o pinzatu, in particulare in i tappi, i recipienti di cunvenzione, è u puntu induve esce da l'apparechju.
• Accessori: Aduprate solu accessori / accessori specificati da u fabricatore.
• Muntamentu: Aduprate solu cù u carrettu, u stand, u tripode, u supportu, o a tavola specificata da u fabricatore, o vindutu cù l'apparechju. Quandu si usa un carrettu, fate prudenza quandu si move a combinazione di carrettu / apparatu per evità ferite da ribalta.
• Service : Riferite tutte l'assistenza à u persunale di serviziu qualificatu. U serviziu hè necessariu quandu l'apparechju hè statu danatu in ogni modu, cum'è u cordone di l'alimentazione o u plug hè dannatu, u liquidu hè statu versatu o l'uggetti sò caduti in l'apparechju, l'apparechju hè statu espostu à a pioggia o l'umidità, ùn funziona micca nurmale. , o hè stata abbandunata.

3. Ciò chì hè in a scatula

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

• JBL Professional JRX218S 18-Inch Passive Subwoofer
• Manuale d'uso (stu documentu)

Sì qualchì articulu manca o dannatu, cuntattate immediatamente u vostru rivenditore.

4. Setup Guide

4.1 Placement

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 Cunnessioni

The JRX218S is a passive subwoofer and requires an external amplifier. Connect your 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.

Figure 2: Rear panel showing SpeakON input connectors.

4.3 Muntamentu di u polu

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.

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

5. Operating Instructions

5.1 Power Handling

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 Integrazione di u Sistema

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. Mantenimentu

6.1 Pulizia

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. Risoluzione di prublemi

8. Specifiche tecniche

Figure 4: Dimensions of the JRX218S subwoofer.

9. Garanzia è Support

9.1 Garanzia infurmazione

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 websitu per i termini è e cundizioni dettagliate. Conservate a vostra prova d'acquistu per e richieste di garanzia.

9.2 Assistenza Clienti

For technical assistance, service, or further inquiries, please contact JBL Professional customer support. Contact details can typically be found on the official JBL websitu o in l'imballu di u produttu.