JBL Professional JRX218S 18-Inch Passive Subwoofer Instruction Manual

1. Taw qhia

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.

Daim duab 1: Pem hauv ntej view of the JBL Professional JRX218S 18-Inch Passive Subwoofer.

2. Cov ntaub ntawv tseem ceeb ntawm kev nyab xeeb

• Nyeem cov lus qhia: Khaws cov lus qhia no rau yav tom ntej siv.
• Ua raws li cov lus ceeb toom: Ua raws li tag nrho cov lus ceeb toom ntawm cov khoom thiab hauv cov lus qhia ua haujlwm.
• Dej thiab noo noo: Tsis txhob siv cov cuab yeej no nyob ze dej.
• Ntxuav: Ntxuav tsuas yog nrog daim ntaub qhuav.
• Qhov cua: Tsis txhob thaiv qhov qhib qhov cua. Nruab raws li cov chaw tsim khoom cov lus qhia.
• Thaum tshav kub kub: Tsis txhob nruab ze ntawm tej qhov chaw kub xws li radiators, lub tshav kub registers, qhov cub, los yog lwm yam apparatus (xws li amplifiers) uas ua kom sov.
• Kev tiv thaiv fais fab-qaum: Tiv thaiv txoj hlua hluav taws xob los ntawm kev taug kev los yog pinched, tshwj xeeb tshaj yog ntawm cov plugs, cov khoom siv yooj yim, thiab qhov chaw uas lawv tawm ntawm lub cuab yeej.
• Accessories: Tsuas yog siv cov ntawv txuas / accessories uas tau teev tseg los ntawm cov chaw tsim khoom.
• Mounting: Tsuas yog siv nrog lub laub, sawv ntsug, tripod, bracket, lossis cov lus teev los ntawm cov chaw tsim khoom, lossis muag nrog cov cuab yeej. Thaum siv lub laub, siv ceev faj thaum txav lub laub / cov cuab yeej ua ke kom tsis txhob raug mob los ntawm kev sib tw.
• Kev pab: Xa tag nrho cov kev pabcuam rau cov neeg ua haujlwm tsim nyog. Kev pabcuam yuav tsum tau ua thaum lub cuab yeej tau raug puas tsuaj rau txhua txoj hauv kev, xws li cov hlua hluav taws xob lossis lub ntsaws puas lawm, cov kua tau nchuav los yog cov khoom tau poob rau hauv lub cuab yeej, lub cuab yeej tau raug los nag lossis dej noo, tsis ua haujlwm li qub. , los yog tau poob lawm.

3. Dab tsi hauv lub thawv

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

• JBL Professional JRX218S 18-Inch Passive Subwoofer
• Tus Neeg Siv Los Siv (cov ntawv no)

Yog tias cov khoom ploj lawm lossis puas, thov hu rau koj tus neeg muag khoom tam sim ntawd.

4. Teeb Qhia

4.1 Qhov chaw

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 Kev sib txuas

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 Ncej Mounting

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. Cov lus qhia ua haujlwm

5.1 Kev tuav pov hwm

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 System Integration

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. Kev tu

6.1 Kev ntxuav

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. Kev daws teeb meem

8. Kev qhia tshwj xeeb

Figure 4: Dimensions of the JRX218S subwoofer.

9. Warranty thiab Support

9.1 Warranty Information

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 website for detailed terms and conditions. Keep your proof of purchase for warranty claims.

9.2 Kev Pabcuam Cov Neeg Siv Khoom

For technical assistance, service, or further inquiries, please contact JBL Professional customer support. Contact details can typically be found on the official JBL website los yog nyob rau hauv cov khoom ntim.