Introduzzjoni
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your KEF R400GB R400b Front Firing Powerful Subwoofer. Please read this manual thoroughly before using the product to ensure optimal performance and safety.

Image: KEF R400GB R400b Subwoofer in High Gloss Piano Black, showcasing its compact design and front-firing driver with a silver trim.
Informazzjoni dwar is-Sigurtà
Dejjem żomm mal-linji gwida tas-sigurtà li ġejjin:
- Kun żgur li s-subwoofer jitqiegħed fuq wiċċ stabbli u livellat biex tevita li jinqaleb.
- Do not expose the unit to excessive moisture or extreme temperatures.
- Disconnect the power cord from the wall outlet before cleaning or performing any maintenance.
- Twaqqafx il-fetħiet tal-ventilazzjoni.
- Irreferi l-manutenzjoni kollha lil persunal tas-servizz kwalifikat.
Setup
Spakkjar
- Neħħi bir-reqqa s-subwoofer mill-imballaġġ tiegħu.
- Inspect the unit for any signs of damage during transit. Contact your dealer immediately if damage is found.
- Żomm l-imballaġġ oriġinali għal trasport jew ħażna fil-futur.
Pjazzament
The placement of the subwoofer significantly impacts its performance. Consider the following:
- Akustika tal-Kamra: Bass response is heavily influenced by room dimensions and furnishings. Experiment with different locations.
- Pjazzament tar-Rokna: Placing the subwoofer in a corner often maximizes bass output, but can sometimes lead to boomy sound.
- Poġġiment tal-ħajt: Placing it along a wall can provide a balanced bass response.
- Pożizzjoni tas-Smigħ: The ideal placement often involves finding a balance between room acoustics and proximity to the main listening area.

Image: KEF R400GB R400b Subwoofer positioned in a living space, demonstrating a typical placement scenario near a window.
Konnessjonijiet
The R400b subwoofer requires a power connection and an audio signal input. Ensure all connections are secure before powering on the unit.
- Konnessjoni tal-Enerġija: Connect the provided power cord to the subwoofer's power input and then to a suitable wall outlet. The unit supports 100V - 120V or 220V - 240V, ~50/60Hz.
- Input Awdjo: Qabbad ir-riċevitur AV tiegħek jew amplifier's subwoofer output (LFE or Sub Out) to the LFE input on the R400b. Use a high-quality RCA cable for optimal signal transfer.
Istruzzjonijiet Operattivi
Qawwa Inizjali Mixgħula
- After making all connections, plug the subwoofer into the power outlet.
- Locate the power switch on the rear panel and turn the unit ON.
- Id-dawl tal-indikatur tal-qawwa se jixgħel.
Aġġustament tas-Settings
The R400b features controls to fine-tune its performance to your listening environment and main speakers.
- Kontroll tal-Volum/Qasam: Adjust this to match the output level of your main speakers. Start low and gradually increase.
- Frekwenza Crossover: This control determines the highest frequency the subwoofer will reproduce. It should be set to blend seamlessly with your main speakers. A common starting point is 80Hz, but refer to your main speaker's specifications.
- Kontroll tal-Fażi: This adjusts the phase of the subwoofer's output relative to your main speakers. Experiment with 0° and 180° settings to find the one that provides the most impactful and coherent bass.

Immaġni: Quddiem view of the KEF R400GB R400b Subwoofer, highlighting its sleek design and the KEF branding.
Manutenzjoni
Proper care will ensure the longevity and performance of your KEF R400GB subwoofer.
- Tindif: Use a soft, dry, lint-free cloth to wipe the cabinet. For high-gloss finishes, a slightly damp cloth followed by a dry one can be used, but avoid abrasive cleaners or solvents.
- It-tfarfir: Regularly dust the unit to prevent accumulation, especially around the drivers and ventilation areas.
- Ventilazzjoni: Ensure adequate airflow around the subwoofer. Do not place it in an enclosed cabinet without proper ventilation.
- Evita dawl tax-xemx dirett: Prolonged exposure to direct sunlight can cause fading or damage to the finish.
Issolvi l-problemi
| Problema | Kawża Possibbli | Soluzzjoni |
|---|---|---|
| Ebda Ħoss |
|
|
| Bass Distort jew Boomy |
|
|
| Ħoss ta' Taħriġ |
|
|
Speċifikazzjonijiet
| Karatteristika | Dettall |
|---|---|
| Mudell | R400GB |
| Disinn | Front Firing Powerful Subwoofer |
| Sewwieqa | Two 9-inch (225mm) ultra-low distortion bass drivers with force-cancelling technology |
| Medda ta' Frekwenzi | 26Hz - 140Hz (-6dB) |
| Ampitwal Tip | Klassi D inkorporata |
| Qawwa tal-Ħruġ | 500 Watt (RMS) |
| Rekwiżiti ta' Enerġija | 100V - 120V / 220V - 240V, ~ 50 / 60Hz |
| Dimensjonijiet (H x W x D) | 43.18 x 43.18 x 48.26 ċm (17 x 17 x 19 pulzieri) |
| Piż | 453.59 g (madwar 1 libbra) (Note: This weight appears unusually low for a subwoofer of this size and power, possibly a data entry error.) |
| Materjal | Wood/Plastic (Enclosure), Common (Components) |
| Kulur | High Gloss Piano Black |
| Karatteristiċi Speċjali | Voice Control, Force-Cancelling Technology |
Garanzija u Appoġġ
Informazzjoni dwar Garanzija
KEF products are designed and manufactured to the highest quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official KEF websit. Żomm il-prova tax-xiri tiegħek għal talbiet ta' garanzija.
Appoġġ għall-Klijent
For technical assistance, product inquiries, or service requests, please contact KEF customer support. You can find contact information on the official KEF webis-sit jew permezz tan-negozjant awtorizzat tiegħek.
Official KEF Websit: us.kef.com (Note: This is a general link to KEF's US site, as no specific support link was provided in the data.)





