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Description
Optimal Audio Up 4O - 4" Passive Ceiling Speaker, 10W, 100The Optimal Audio Up 4O is a discreet 4 inch passive ceiling speaker designed to deliver consistent audio coverage and high quality sound in various commercial settings. With its open backed design, it is ideal for environments where aesthetics and affordability are key considerations, such as hotels, retail stores, restaurants, and more. Features Full Range Sound: Equipped with a 4 inch (105mm) driver, the Up 4O provides clear and balanced audio
The Optimal Audio Up 4O is a discreet 4-inch passive ceiling speaker designed to deliver consistent audio coverage and high-quality sound in various commercial settings. With its open-backed design, it is ideal for environments where aesthetics and affordability are key considerations, such as hotels, retail stores, restaurants, and more.
Features
- Full-Range Sound: Equipped with a 4-inch (105mm) driver, the Up 4O provides clear and balanced audio suitable for both music and speech.
- Wide Coverage Pattern: The speaker features a 130° conical dispersion pattern, ensuring sound is evenly distributed across small to medium-sized spaces.
- 70/100V Line Operation: Designed to operate on 70V or 100V line systems, it includes transformer taps for flexible power options.
- Easy Installation: Comes with an integral fixing system for simple and clean mounting in ceilings with minimum cavity depth.
- Discreet Design: The unobtrusive white finish and open-backed design allow for seamless integration into various architectural environments.
- Durable Construction: Features a perforated steel grille for protection and a robust ABS baffle for longevity.
Specifications
- Type: Full range, passive, ceiling speaker
- Frequency Response: 87Hz – 15kHz ± 3dB -10dB @ 60Hz
- Drivers: 4" (105mm), coated paper
- Rated Power (AES): 10W
- Nominal Impedance: Tap Dependent
- Sensitivity (1W/1m): 93dB
- Maximum SPL: 100dB (cont)
- Recommended High-Pass Filter: 24dB/Octave @ 80Hz
- Transformer Taps @ 70V: 6, 3, 1.5, 0.75W
- Transformer Taps @ 100V: 6, 3, 1.5W
- Dispersion: 130˚ conical
- Dimensions (inc. Grille): Ø 202mm x D 117mm (Ø 7.95" x D 4.62")
- Cut-Out Diameter: 178mm (7.01")
- Weight: 1.3kg (2.9lbs)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Great sunscreen
Size: 5 Fl Oz (Pack of 1)
I love this sunscreen and I even use it on my face. Good value in a large size container.
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Reviewed in the United States on April 21, 2026
★★★★★ 5
One of the few body sunscreens that doesn't trigger my sensory issues
Size: 5 Fl Oz (Pack of 1)
I have sensory sensitivities, so wearing sunscreen is usually a pretty unpleasant experience for me. I can't stand heavy textures, greasy finishes, or that sticky sunscreen feeling that seems to sit on top of the skin all day. I'm also bothered by mineral and matte sunscreens that dry my skin out. It's very hard to find a sunscreen as genuinely comfortable as this one is.
I bought the Coola Sunblock Body Lotion because several reviews mentioned that it actually feels like a regular lotion once applied, but I honestly assumed it still wouldn't work for me.
I was genuinely shocked the first time I used this. The texture feels silky and lightweight, absorbs quickly, and leaves my skin feeling soft rather than coated or oily. It really does wear more like a comfortable body lotion than a traditional sunscreen, and I don't notice any residue or oily feel at all, which is amazing.
I also love that it's fragrance-free, which makes it even easier for me to tolerate, especially with sensitive skin and sensory issues.
Coola Sunblock Body Lotion is one of the very few body sunscreens I've tried that I actually enjoy wearing, and it works perfectly. I am very fair and burn easily, but I had no burning or redness on my first outside day of the summer while wearing this.
It's sunscreen that works and that I can actually wear with zero discomfort. Amazing.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Love the quality!
Size: 5 Fl Oz (Pack of 1)
Im 63, with fair and sensitive skin. I love this high strength sunscreen that isn't greasy and doesn't have added ingredients and perfumes that bother me and make me break out.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Expensive, but worth it
Size: 5 Fl Oz (Pack of 1)
What's the best sunscreen? The sunscreen you'll use consistently. I like Coola because it feels like moisturizer, not sticky gross sunscreen. It's pricey, but I think you get what you pay for with Coola.
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Reviewed in the United States on August 30, 2025
★★★★★ 4
Great sunscreen, but too pricey!
Size: 5 Fl Oz (Pack of 1)
I love COOLA products. They are a good substitute for my favorite sunscreens by Bare Republic - which was discontinued. Unfortunately COOLA products are very pricey. For that reason, I must use other brands where it makes sense. Trader Joe's spray sunscreen works very well and is $5.99. Coppertone Water Babies works for water sports. I'm saving my $28 COOLA lotion sunscreen for when I need a non greasy odor-free sunscreen, for example when I spend time in the sun followed by lunch out or shopping.
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Reviewed in the United States on October 10, 2025