JBL Professional JRX218S 18-Inch Passive Subwoofer Instruction Manual

1. Introduktion

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.

Figur 1: Forside view of the JBL Professional JRX218S 18-Inch Passive Subwoofer.

2. Vigtige sikkerhedsoplysninger

• Læs instruktionerne: Gem disse instruktioner til fremtidig reference.
• Vær opmærksom på advarsler: Følg alle advarsler på produktet og i betjeningsvejledningen.
• Vand og fugt: Brug ikke dette apparat i nærheden af ​​vand.
• Rensning: Rengør kun med en tør klud.
• Ventilation: Bloker ikke ventilationsåbninger. Installer i overensstemmelse med producentens anvisninger.
• Varme: Må ikke installeres i nærheden af ​​varmekilder såsom radiatorer, varmeapparater, komfurer eller andre apparater (inklusive ampløftere), der producerer varme.
• Strømkabelbeskyttelse: Beskyt netledningen mod at blive trådt på eller klemt, især ved stik, stikkontakter og det sted, hvor de kommer ud af apparatet.
• Tilbehør: Brug kun tilbehør/tilbehør specificeret af producenten.
• Montering: Brug kun den vogn, stativ, stativ, beslag eller bord, der er specificeret af producenten eller solgt sammen med apparatet. Når en vogn bruges, skal du være forsigtig, når du flytter kombinationen af ​​vognen/apparatet for at undgå skader ved at vælte.
• Service: Overlad al service til kvalificeret servicepersonale. Service er påkrævet, når apparatet er blevet beskadiget på nogen måde, såsom strømforsyningsledning eller stik er beskadiget, væske er blevet spildt, eller genstande er faldet ind i apparatet, apparatet har været udsat for regn eller fugt, ikke fungerer normalt , eller er blevet droppet.

3. Hvad er der i æsken

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

• JBL Professional JRX218S 18-Inch Passive Subwoofer
• Brugervejledning (dette dokument)

Hvis nogen dele mangler eller er beskadiget, bedes du straks kontakte din forhandler.

4. Opsætningsvejledning

4.1 Placering

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 Forbindelser

The JRX218S is a passive subwoofer and requires an external ampForbind din 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 ampForstærkeren kan sikkert drive en 4-ohm belastning.

Figure 2: Rear panel showing SpeakON input connectors.

4.3 Stangmontering

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. Betjeningsvejledning

5.1 Strømhåndtering

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 Systemintegration

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. Vedligeholdelse

6.1 Rengøring

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. Fejlfinding

8. Tekniske specifikationer

Figure 4: Dimensions of the JRX218S subwoofer.

9. Garanti og support

9.1 Garantioplysninger

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 webwebstedet for detaljerede vilkår og betingelser. Gem din købsbevis til garantikrav.

9.2 Kundesupport

For technical assistance, service, or further inquiries, please contact JBL Professional customer support. Contact details can typically be found on the official JBL webwebsted eller i produktemballagen.