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Description
Sundown Audio - SDv4 8"The SD 4 series truly is a world class sound quality woofer with low mounting depth, small box requirements, yet extraordinarily high power handling. It's the ideal choice for anyone seeking a high quality, low mounting depth subwoofer that performs hammers in small enclosures. With enhanced mechanical durability and superb sound quality, you get the perfect marriage of form and function. RMS 400 watts Dual 2 voice coils Optimized for small, sealed
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- The SD-4 series truly is a world-class sound quality woofer with low mounting depth, small box requirements, yet extraordinarily high power handling. It's the ideal choice for anyone seeking a high-quality, low-mounting-depth subwoofer that performs hammers in small enclosures. With enhanced mechanical durability and superb sound quality, you get the perfect marriage of form and function.
- RMS 400 watts
- Dual 2 voice coils
- Optimized for small, sealed enclosures
- Lightweight Neodymium motor
- Computer-optimized foam “w” surround
- Two-inch 8-layer copper voice coil
- Large aluminum Faraday ring for smooth acoustic response
- Patented high strength cast aluminum frame
- Low distortion motor construction
- High-temperature voice coil wire
- Spring-loaded terminals
- Stitched-on tinsel lead wires
Dual-2-Ohm T/S Specs RMS Power (D2)Re-Ohms (D2)FS-Hz (D2)Vas-L (D2)Qes (D2)Qms (D2)Qts (D2)Le-mH (D2)BL-NA (D2)Mms-Grams (D2)Cms-uM/N (D2)Sensitivity-dB @ 1w/1m (D2)Xmax (D2)Subwoofer Measurements DocumentationDisplacement (Inches)Depth (Inches)Cutout (Inches)Motor Diameter (Inches)Ported Enclosure Specs Ported Enclosure SizeRecommended Port TuningSealed Enclosure Specs Sealed Enclosure Size4th Order Enclosure Specs 4th Order Sealed Side4th Order Ported Side4th Order Port Area4th Order Port Length
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
4.1 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 4
It’s ok
Style: Kids SPF 50, Size: 3 Fl Oz (Pack of 1)
Doesn’t smell like anything, especially not fruit. Seems to work well- it’s what we use on our faces. I started using this all over on my daughter because their spray version is not good.
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Reviewed in the United States on April 24, 2019
★★★★★ 5
Overall this is a very good product
Style: Kids SPF 50, Size: 3 Fl Oz (Pack of 1)
I bought this because every sunblock I own eventually gets in my eyes and burns the living daylights out of them. I prefer to use something that isn't laden with chemicals, is cruelty free and reef safe so this looked like it would fit the bill and indeed, it does.
It is a true "no tears" formula which I very much appreciate. As with so many zinc based sunblocks there's still a slight "Kabuki mask" effect but it isn't as bad as some of the other zinc products. I wouldn't go so far as to say it's easy to spread because it doesn't have a lot of "slip", doesn't glide like the non-zinc products. You do have to work with it for awhile to get rid of the decidedly chalky consistency but once you get going it seems to be okay. I think somebody else mentioned using a moisturizer before you put it on which seems like good idea even though this is supposed to be moisturizing.
Would I purchase this again? I'm pretty sure I will because the "no tears" aspect of the product is important to me. I'll probably use it with a light carrier oil on my face first, let that oil sink in and then put this on top. I'll keep you posted on how that works out.
Thank you, Alba Botanica, for being cruelty free and reef safe!
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Reviewed in the United States on August 22, 2020
★★★★★ 5
Thank you for making this
Style: Kids SPF 50, Size: 3 Fl Oz (Pack of 1)
I have the most sensitive reactive skin. I regularly will breakout to products that are supposed to be hypoallergenic and non-clogging. I have used this product multiple times and have not had one issue. I also burn in literally 2 mins and I live in Las Vegas. This protected me and my skin did not react. It absorbed in like regularly lotion not leaving any white cast or sticky feeling. There was no scent which is SO important. I wore it only in the sun not swimming so I cannot comment on how well it works under those conditions. I will by this again without hesitation. If you are in need of a high quality sun protector and have skin like a baby or you are a baby this is the best.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Love
Style: Kids SPF 50, Size: 3 Fl Oz (Pack of 1)
It’s nice I love it both me and my daughter we use it it don’t make you white it don’t stick it’s not greasy I love it
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Reviewed in the United States on March 20, 2026
★★★★★ 5
In most of all circumstances, this works
Style: SPF 50, Size: 6 Fl Oz (Pack of 2)
For Summer time and when playing and working in the sun, this is my go to sunscreen! I love how it is more natural than all the other ones out there. I have been sort of a spray on sunscreen connoisseur and this is the one that is my favorite. Also, if I have gotten a burn and put this on it, I believe it helps start the healing process on the burn I got. This is at least what I experienced multiple times last year.
The only circumstance that this sunscreen fails miserably is in the Caribbean. I recently went on a cruise to that region and applied this sunscreen and it became evident that this and the other brands of spray on sunscreen do not work in Caribbean sun. The only sunscreen that works is the lotion based stuff that you rub into your skin. I have also consulted with friends on spray on sunscreen in the Caribbean and they all fail as well.
So, this is why I say that it works in almost every circumstance.
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Reviewed in the United States on May 1, 2023