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- USA
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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
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Description
(2) Alphasonik TSW312 12" TREIS 300 Slim Series Shallow-Mount Subwoofers 4-Ohm SVC (1 Pair)Introducing the Alphasonik TSW312 Treis 300 Series Shallow Mount 12 Car Subwoofer, designed to deliver high impact bass in a low profile design. With a peak power of 1500 Watts and 500 Watts RMS, this subwoofer combines powerful performance with a slim build, making it ideal for tight spaces in trucks and cars. Featuring a single 4 Ohm voice coil, an aluminum cone, and a compact yet robust construction, the TSW312 offers exceptional sound quality and
Introducing the Alphasonik TSW312 Treis 300 Series Shallow Mount 12” Car Subwoofer, designed to deliver high-impact bass in a low-profile design. With a peak power of 1500 Watts and 500 Watts RMS, this subwoofer combines powerful performance with a slim build, making it ideal for tight spaces in trucks and cars. Featuring a single 4 Ohm voice coil, an aluminum cone, and a compact yet robust construction, the TSW312 offers exceptional sound quality and durability for any audio setup.
- Peak: 3000 Watts Per Pair / 1500 Watts Each
- RMS: 1000 Watts Per Pair / 500 Watts Each
- Slim Profile Design: Compact build for easy installation in tight spaces.
- Single 4 Ohm Voice Coil: Efficient power distribution and straightforward wiring.
- High-Grade Aluminum Cone: Delivers clear, precise bass with minimal distortion.
- Durable Construction: Built to withstand the demands of high-power audio.
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
4.0 ★★★★★
Based on 329 reviews
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Product Reviews
★★★★★ 5
Fast Working
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
I have a hard time staying asleep. I took this product the first day and slept very well. I would recommend this highly. Dissolves Faunder the tongue and works sooner than capsules or pills.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
★★★★★ 5
Melatonin by Superior Source
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
I've bought this melatonin repeatedly for years. It works gently and naturally to help me drift off to sleep and wake rested and ready for the day. I always get the smallest dose 1 mg
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2025
★★★★★ 4
So far it does help me with becoming drowsy for sleep
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
So far this melatonin helps with making me drowsy, but I still take 1/2 a prescribed sleeping pill with it. Normally, within a half hour I am sleepy. I have not tried taking it by itself yet. I am a petite build, so I think my size factors in to how well it works for me. Flavor is okay. Easy to take melting it under my tongue. Price is okay. I like that it is sublingual and limited added ingredients. I don't usually take chamomile due to being sensitive to it in the past, but seems to be okay in this pill. It also seems to help me with staying asleep for a longer period of time.
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Reviewed in the United States on February 12, 2022
★★★★★ 5
Aids my sleep w/o grogginess the next day!!
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
Superior Source has been a game changer in being part of my sleep aid supplements! My physician recommended this brand and dosage and I'm grateful!!
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Works well.
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
Works well!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026