Įvadas
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.
Saugos informacija
Visada laikykitės šių saugos nurodymų:
- Ensure the subwoofer is placed on a stable, level surface to prevent tipping.
- Nelaikykite įrenginio per didelėje drėgmėje ar ekstremalioje temperatūroje.
- Disconnect the power cord from the wall outlet before cleaning or performing any maintenance.
- Neuždenkite vėdinimo angų.
- Visus techninės priežiūros darbus patikėkite kvalifikuotam techninės priežiūros personalui.
Sąranka
Išpakavimas
- Atsargiai išimkite žemųjų dažnių garsiakalbį iš pakuotės.
- Inspect the unit for any signs of damage during transit. Contact your dealer immediately if damage is found.
- Išsaugokite originalią pakuotę būsimam transportavimui ar saugojimui.
Įdėjimas
The placement of the subwoofer significantly impacts its performance. Consider the following:
- Kambario akustika: Bass response is heavily influenced by room dimensions and furnishings. Experiment with different locations.
- Kampo vieta: Placing the subwoofer in a corner often maximizes bass output, but can sometimes lead to boomy sound.
- Sienų išdėstymas: Placing it along a wall can provide a balanced bass response.
- Klausymosi padėtis: 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.
Jungtys
The R400b subwoofer requires a power connection and an audio signal input. Ensure all connections are secure before powering on the unit.
- Maitinimo jungtis: 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.
- Garso įvestis: Prijunkite AV imtuvą arba 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.
Naudojimo instrukcijos
Pradinis įjungimas
- After making all connections, plug the subwoofer into the power outlet.
- Locate the power switch on the rear panel and turn the unit ON.
- Užsidegs maitinimo indikatoriaus lemputė.
Nustatymų reguliavimas
The R400b features controls to fine-tune its performance to your listening environment and main speakers.
- Garso / stiprinimo valdymas: Adjust this to match the output level of your main speakers. Start low and gradually increase.
- Kryžminis dažnis: 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.
- Fazių valdymas: 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.

Vaizdas: priekis view of the KEF R400GB R400b Subwoofer, highlighting its sleek design and the KEF branding.
Priežiūra
Proper care will ensure the longevity and performance of your KEF R400GB subwoofer.
- Valymas: 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.
- Dulkės: Regularly dust the unit to prevent accumulation, especially around the drivers and ventilation areas.
- Vėdinimas: Ensure adequate airflow around the subwoofer. Do not place it in an enclosed cabinet without proper ventilation.
- Venkite tiesioginių saulės spindulių: Ilgalaikis tiesioginių saulės spindulių poveikis gali pažeisti arba sugadinti apdailą.
Trikčių šalinimas
| Problema | Galima priežastis | Sprendimas |
|---|---|---|
| Nėra garso |
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| Iškraipyti arba bumuoti bosai |
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| Dumbimas Triukšmas |
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Specifikacijos
| Funkcija | Detalė |
|---|---|
| Modelis | R400GB |
| Dizainas | Front Firing Powerful Subwoofer |
| Vairuotojai | Two 9-inch (225mm) ultra-low distortion bass drivers with force-cancelling technology |
| Dažnių diapazonas | 26Hz - 140Hz (-6dB) |
| Ampgyvybingesnis tipas | Įmontuota D klasė |
| Išėjimo galia | 500 vatai (RMS) |
| Galios reikalavimai | 100V - 120V / 220V - 240V, ~ 50 / 60Hz |
| Matmenys (A x P x G) | 43.18 x 43.18 x 48.26 cm (17 x 17 x 19 colio) |
| Svoris | 453.59 g (apie 1 svaro) (Note: This weight appears unusually low for a subwoofer of this size and power, possibly a data entry error.) |
| Medžiaga | Wood/Plastic (Enclosure), Common (Components) |
| Spalva | High Gloss Piano Black |
| Ypatingos savybės | Voice Control, Force-Cancelling Technology |
Garantija ir palaikymas
Informacija apie garantiją
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 websvetainėje. Išsaugokite pirkimo įrodymą garantiniams reikalavimams.
Pagalba klientams
For technical assistance, product inquiries, or service requests, please contact KEF customer support. You can find contact information on the official KEF websvetainėje arba per įgaliotąjį pardavėją.
Official KEF Websvetainė: us.kef.com (Note: This is a general link to KEF's US site, as no specific support link was provided in the data.)





