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OBT 511 ceiling speaker is an audio device designed to deliver outstanding performance in playing background music and announcements in spaces such as offices, cafes, restaurants, meeting rooms or high-end homes. With a maximum power output of up to 40W, a sensitivity of 88dB and an impedance of 8Ω, the OBT 511 meets the needs of long-term, stable use without consuming too much power.
In addition, the compact, sophisticated design and elegant white color help the device easily blend with modern ceilings without disrupting the space layout. In this article, you will explore in detail the highlights of the design, sound quality, installation capabilities and compare the product with competitors in the same segment, thereby helping you have a comprehensive view before investing.
The OBT 511 ceiling speaker is designed to optimize the ability to disperse sound evenly in space, helping every area in the room receive clear sound, without localization or distortion. Thanks to a sensitivity of up to 88 ± 2dB and a frequency range of 100Hz - 20kHz, the speaker can handle both voice and music well with high fidelity.
This is ideal for areas that require stable and gentle sound such as offices, restaurants or reception areas. In addition, the speaker membrane is designed with full-range, providing better mid and high sound reproduction than single-frequency speakers, helping listeners feel the content played clearly and comfortably.
Weighing only 1.7kg and compact in size, the OBT 511 speaker allows for quick and neat installation on plasterboard, suspended or wooden ceilings. The clip-in installation method with flexible spring feet helps to firmly fix the speaker to the ceiling without the need for additional accessories.
The circular rim design with white painted mesh creates a seamless feel, ensuring the aesthetics of the interior space. The standard Ø170mm ceiling cutout as recommended by the manufacturer helps the speaker fit tightly to the ceiling frame, avoiding vibration or looseness after a long time of use. With a user-oriented design, the OBT 511 is completely suitable for both professional technicians and individual users.
The OBT 511 speaker is not only outstanding for its sound quality but also highly appreciated for its durability and environmental adaptability. The fireproof ABS plastic shell combined with the powder-coated aluminum frame helps the speaker resist moisture, dirt and light physical impacts, very suitable for areas such as kitchens, hallways, bathrooms or spaces with high humidity.
The anti-magnetic technology built into the speaker helps minimize signal interference when installed near other electronic devices such as ceiling lights, air conditioners or projectors. As a result, the output sound is always clean, without distortion or howling, even when operating for long periods of time.
Compared to other ceiling speakers in the same segment such as JBL Control 24CT or TOA PC-2852, OBT 511 offers advantages in terms of power performance and price. While other speaker models usually limit the rated power to 10 - 15W, OBT 511 allows flexible adjustment from 2.5W to 20W and peak power reaches 40W, serving well for spaces from 15 - 40m².
In addition, the wide frequency range of 100Hz – 20kHz helps the speaker handle both music and voice well, while many competitors often lack in the high or mid range. In addition, the powder-coated aluminum shell design of the OBT 511 also brings higher durability and aesthetics than speakers using conventional plastic.
Installation flexibility, moisture resistance and competitive price are the points that make OBT 511 stand out in today's ceiling speaker selection.
Proper installation of the OBT 511 will help maximize sound performance and extend the life of the device. First, you need to determine the location of the hole in the ceiling so that the sound can spread evenly throughout the room, avoiding hidden areas or near heat-generating devices.
Next, use a ruler to measure the diameter of the Ø170mm hole, use a drill and ceiling cutter to create the hole. Then, connect the audio signal wire to the speaker, ensuring the correct polarity (±) according to the 100V or 8Ω system depending on the device being paired. Insert the speaker into the hole and use the clamping mechanism to secure it to the ceiling.
Finally, play a test audio signal and check the speaker's stability. If the sound is clear, without distortion or vibration, the installation is successful.
When using the OBT 511 speaker, users should be careful not to let the device operate continuously at maximum power (40W) for a long time to avoid overloading or burning the coil. At the same time, the speaker should be installed in a well-ventilated area, avoiding placing it near high heat sources such as high-power light bulbs or windows with direct sunlight.
Clean the speaker periodically with a soft cloth to remove dust on the speaker membrane, do not use strong chemical solutions because they can damage the electrostatic paint. If you detect distortion or buzzing sound, you need to check the signal line, connectors and output power from the amplifier to avoid incorrect impedance affecting the speaker. Periodic maintenance every 6 months is necessary for the device to operate stably and durably.
To buy genuine OBT 511 ceiling speakers at the best price, you can go directly to the showroom system or order through the website of Phuc Truong Audio - a professional audio equipment distributor with more than 10 years of experience. Here, you will be consulted in detail about the configuration, supported with on-site installation and receive a clear warranty policy from 12 - 24 months.
In addition, Phuc Truong also provides ready-made products for large-scale projects with attractive discounts. For customers living far away, you can order through the website with the option of Phuc Truong's official booth to ensure product quality and after-sales service. Don't forget to compare prices and promotions to choose the best time to buy for your budget.
The OBT 511 subwoofer works best in spaces ranging from 15m² to 40m², depending on the number of speakers used and the purpose of playing background music or announcements. With a maximum power of 40W and a sensitivity of 88dB, the device can respond well to spaces such as meeting rooms, coffee shop sound, notification sound or apartment hallway.
Yes. Thanks to the use of fireproof ABS plastic material and powder-coated aluminum frame, the OBT 511 speaker is moisture-proof and light dust-proof, suitable for installation in high humidity areas such as kitchens, bathrooms or covered outdoor corridors.
The OBT 511 can operate in both 100V line mode and 8Ω impedance, so you can pair it with a dedicated broadcast amplifier or power amplifier standard. For multi-speaker systems, a 100V amplifier should be used to ensure stable and safe voltage distribution for long-distance wiring.
No need. The speaker has built-in fundamental frequency filter circuit and self-protection mechanism against overload when operating in 100V sound system. However, if used for restaurant sound system or high intensity music, you may consider using an input signal limiter for increased durability.
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