1. Introducció
The JBL Professional Control 18C/T-BK is a high-performance, two-way 8-inch coaxial ceiling loudspeaker designed for a wide range of commercial audio applications. This full-range speaker features a 200 mm (8.0 inch) high-tech cone driver and a 25 mm (1.0 inch) soft-dome liquid-cooled tweeter, ensuring clear and consistent sound reproduction. Its robust construction includes a UV-resistant baffle and a pre-attached blind-mount back can for simplified installation.
This manual provides essential information for the proper installation, operation, and maintenance of your Control 18C/T-BK loudspeakers.
2. Característiques clau
- 200 mm (8.0 in) high output driver with polypropylene cone and butyl rubber surround.
- 25 mm (1.0 in) soft-dome liquid-cooled tweeter for extended high-frequency response.
- Blind-mount back can design for quick and easy installation in various ceiling types.
- Dual conduit/cable clamps for secure wiring connections.
- Combined 70V/100V and low impedance (8Ω) direct operation, offering versatility for different audio systems.
- 90 Watts power handling at 8Ω nominal setting; 60W multi-tap at 70V/100V.
3. Contingut del paquet
Verifiqueu que tots els components siguin presents abans de continuar amb la instal·lació:
- 2 x JBL Professional Control 18C/T-BK Ceiling Loudspeakers
- Plantilla d'instal·lació (si s'inclou)
- Manual d'usuari (aquest document)
4. Configuració i instal·lació
La seguretat primer: Always disconnect power to the installation area before beginning any electrical work. Consult with a qualified electrician or installer if you are unsure about any steps.
Image: JBL Professional Control 18C/T-BK Ceiling Loudspeakers
4.1 Planificació de la instal·lació
- Determine the optimal placement for sound coverage.
- Ensure there is sufficient clearance behind the ceiling surface for the speaker's back can.
- Verify that the ceiling material can support the weight of the speaker.
4.2 Cutting the Ceiling Opening
- Use the provided template (if applicable) or refer to the specifications for the correct cutout diameter.
- Carefully cut the opening in the ceiling using an appropriate tool.
4.3 Wiring the Loudspeaker
- Route the speaker wire from your amplifier to the ceiling opening.
- Connect the speaker wires to the appropriate terminals on the loudspeaker. The Control 18C/T-BK supports both low impedance (8Ω) and 70V/100V constant voltagsistemes electrònics.
- For 70V/100V systems, select the desired wattage tap setting using the rotary switch on the speaker. Ensure the amplifier output matches the selected voltage.
- Utilize the dual conduit/cable clamps to secure the wiring and maintain proper strain relief.
4.4 Mounting the Loudspeaker
- Insert the loudspeaker into the ceiling opening.
- Engage the blind-mount tabs by tightening the screws on the front baffle. These tabs will pivot outwards and clamp onto the ceiling material, securing the speaker in place.
- Ensure the speaker is flush with the ceiling surface and securely fastened.
5. Instruccions de funcionament
Once installed and wired correctly, the Control 18C/T-BK loudspeakers operate passively, receiving audio signals from an external ampmés viu.
- Encès: Activa el teu àudio ampmés viu.
- Control de volum: Adjust the volume level using your ampcontrols del lificador.
- Font d'àudio: Ensure your audio source is properly connected to the amplifier and playing content.
- Impedance/Voltage Coincidència: Assegureu-vos sempre el vostre amplifier's output impedance or voltage setting matches the speaker's configuration (8Ω or selected 70V/100V tap). Incorrect matching can lead to poor performance or damage.
6. Manteniment
The JBL Control 18C/T-BK loudspeakers require minimal maintenance.
- Neteja: Gently wipe the grille and baffle with a soft, dry cloth to remove dust. Avoid using harsh chemicals or abrasive cleaners.
- Inspecció: Comproveu periòdicament els cargols de muntatge per assegurar-vos que es mantenen ajustats i segurs.
- Medi ambient: Ensure the speakers are not exposed to excessive moisture or extreme temperatures, as they are designed for indoor use and are not waterproof.
7. Solució De Problemes
If you experience issues with your loudspeakers, refer to the following common troubleshooting steps:
- Sense so:
- Comproveu si el ampel lifier està encès i funciona correctament.
- Verifiqueu totes les connexions dels cables de l'altaveu a tots dos amplifier and the speaker terminals.
- Ensure the audio source is active and properly connected.
- Confirm the correct impedance or voltage tap setting is selected on the speaker and matched by the ampmés viu.
- So distorsionat:
- Baixeu el nivell de volum de la ampmés viu.
- Comproveu si hi ha connexions de cablejat soltes.
- Assegureu-vos el amplifier is not overdriven or clipping.
- Verify the speaker's power handling capacity is not exceeded by the ampmés viu.
- So intermitent:
- Inspect all wiring for breaks or loose connections.
- Check for any short circuits in the speaker wiring.
If problems persist, contact JBL Professional customer support or a qualified audio technician.
8. Especificacions
| Característica | Especificació |
|---|---|
| Nom del model | Control 18C/T-BK |
| Tipus d'altaveu | In-Ceiling, Two-Way Coaxial |
| Diàmetre del woofer | 200 mm (8 polzades) |
| Diàmetre del Tweeter | 25 mm (1 polzades) |
| Resposta de freqüència | 16 KHz (Upper Limit) |
| Impedància | 8 Ohm (nominal) |
| Entrada Voltage (70 V/100 V) | 70 volts (CA) / 100 volts (CA) |
| Wattage (8 ohms) | 90 watts |
| Speaker Maximum Output Power (70V/100V) | 60 Watts (multi-tap) |
| Tipus de muntatge | Muntatge al sostre |
| Material | Plàstic |
| Color | Negre |
| Dimensions del producte (P x A x A) | 29.8"D x 16"W x 15.7"H (Note: These dimensions seem unusually large for a single ceiling speaker and might refer to packaging or a pair. Refer to product diagrams for exact speaker dimensions.) |
| Pes de l'article | 19.5 Pounds (for the pair) |
| Ús interior/exterior | Interior |
| Nivell de resistència a l'aigua | No resistent a l'aigua |
| Altaveu AmpTipus de lificació | Passiva |
| Tecnologia de connectivitat | RCA (Note: Typically refers to input type, actual connection is via speaker wire terminals) |
| UPC | 691991004735 |
9. Garantia i Suport
The JBL Professional Control 18C/T-BK loudspeakers come with a Limited Warranty. For detailed warranty terms and conditions, please refer to the warranty card included with your product or visit the official JBL Professional weblloc.
For technical support, service, or further inquiries, please contact JBL Professional customer service through their official channels.
