---
product_id: 602152847
title: "Alphasonik AS12DF 12'' 1500 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Under Seat Subwoofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Air Tight Sealed Bass Enclosure"
brand: "alphasonik"
price: "£599.09"
currency: GBP
in_stock: true
reviews_count: 5
category: "Alphasonik"
url: https://www.desertcart.co.uk/products/602152847-alphasonik-as12df-12-1500-watts-4-ohm-down-fire-shallow
store_origin: GB
region: United Kingdom
---

# Slim 6.7" height 1500W max power Air-tight sealed MDF enclosure Alphasonik AS12DF 12'' 1500 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Under Seat Subwoofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Air Tight Sealed Bass Enclosure

**Brand:** alphasonik
**Price:** £599.09
**Availability:** ✅ In Stock

## Summary

> 🎶 Compact Powerhouse: Big Bass, Zero Bulk!

## Quick Answers

- **What is this?** Alphasonik AS12DF 12'' 1500 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Under Seat Subwoofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Air Tight Sealed Bass Enclosure by alphasonik
- **How much does it cost?** £599.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/602152847-alphasonik-as12df-12-1500-watts-4-ohm-down-fire-shallow)

## Best For

- alphasonik enthusiasts

## Why This Product

- Trusted alphasonik brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Down-Firing Design:** Optimizes bass response for richer, deeper low frequencies wherever you install it.
- • **Air-Tight MDF Enclosure:** Minimizes vibration and maximizes bass reflex for a premium listening experience.
- • **Ultra-Slim 6.7" Profile:** Fits seamlessly under seats or tight spaces without sacrificing sound quality.
- • **Rigid Spun Aluminum Cone:** Delivers distortion-free, crystal-clear bass even at high volumes.
- • **Powerful 1500W Max Output:** Feel every beat with heart-pounding bass that commands attention.

## Overview

The Alphasonik AS12DF is a 12-inch, 1500-watt max down-firing subwoofer designed for tight vehicle spaces. Featuring a slim 6.7-inch height, a rigid spun aluminum cone, and an air-tight MDF enclosure, it delivers deep, distortion-free bass with superior efficiency. Perfect for cars and trucks, it fits under seats or in compact areas without compromising sound quality.

## Description

By installing the subwoofer downward, the AS down-firing enclosures optimize bass response with superior efficiency for richer, deeper, heart pounding low frequency sounds regardless of the enclosure installed position. The sleek design of the AS enclosures allows for installation anywhere in the vehicle, they can be installed vertically or horizontally. The durable MDF wood construction is designed to reduce vibration. Additionally, a special bonding sealer is used to create an air-tight seal to increase joint strength as well as bass reflex. The spun aluminum cone stays rigid even with the most powerful bass notes. Alphasonik's compact down-firing enclosures perform superbly, producing extreme bass with minimal space.

Review: Nice bass - Really filled in the low end on my system. Installed in a 2014 Raptor SCAB
Review: Killer subs at insane prices! - I first bought the 8 inch Alphasonik sub for wife's Dodge Journey. She's not fussy with audio so I got her the 8" which I wasn't expecting to be earth shaking. It was small, the price was right and it got great reviews on desertcart. I was pleasantly surprised by the amount of punch from this little thing! I'm powering it with a JL Audio 250 watt mono amp. As a quasi-audiophile I wasn't looking for thunderous, muffled bass, but I wanted to fill out the bottom end with a faithful reproduction of the 50-100hz range. I loved the 8" sub so much that I ordered the 10" one for my Dodge Ram 1500--knowing that I'd love it. I'm powering that with a Pioneer 4 channel 4/3/2 amp. It hits a good bit harder than the 8" and I'm a satisfied customer! Above all this, the subs are priced at budget-level yet they yield big-buck performance. They have the construction and heft of much more expensive equipment. I don't know how they do it. I had a $199 10" Kicker sub a few years ago and it was on par with the AS10DF. I can't believe your equipment doesn't have a bigger presence on the internet.

## Features

- Power Rating: 500 Watts RMS / 1500 Watts Max
- Cone Material: Spun Aluminum Cone | Surround Material: High Strength Rubber EPDM Enhanced Surround
- Final Impedance: 4-Ohm | Copper Wound Kapton Voice Coil | Push Type Terminals
- Sensitivity: 92dB | Frequency Response: 26Hz - 500Hz
- Enclosure Dimensions: 20.47" x 6.7" x 14.1" / 520mm x 170mm x 358mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09X6GJVS9 |
| Additional Features | Bass Boost |
| Antenna Location | For Mobile Audio |
| Audio Driver Size | 12 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Surround |
| Audio output mode | Surround |
| Battery Average Life | 1 days |
| Brand | Alphasonik |
| Built-In Media | Power Cable |
| Compatible Devices | Smartphone, Tablet, MP3 Player, Desktop, Laptop, Projector |
| Compatible with Vehicle Type | Car, Truck |
| Connectivity Protocol | wired |
| Connectivity Technology | wired |
| Connectivity technology | wired |
| Control Method | Voice |
| Controller Type | Voice control |
| Customer Package Type | FFP |
| Customer Reviews | 4.2 out of 5 stars 319 Reviews |
| Enclosure Material | MDF Wood |
| Frequency Response | 500 Hz |
| Frequency response | 500 Hz |
| Global Trade Identification Number | 00850009208033 |
| Impedance | 4 Ohms |
| Is Waterproof | FALSE |
| Item Dimensions D x W x H | 61D x 15.2W x 30.5H centimeters |
| MP3 player | No |
| Manufacturer | Alphasonik |
| Model Name | AS12DF |
| Model Number | AS12DF |
| Mounting Type | Down Fire Shallow Mount |
| Mounting type | Down Fire Shallow Mount |
| Number of Audio Channels | 1.0 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Series Number | 12 |
| Speaker Maximum Output Power | 1500 Watts |
| Speaker Size | 12 Inches |
| Speaker Type | Subwoofer |
| Speaker maximum output power | 1500 Watts |
| Specific Uses For Product | In-car audio systems |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 12 Inches |
| Tweeter Diameter | 1 Inches |
| UPC | 850009208033 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 12 Inches |

## Product Details

- **Brand:** Alphasonik
- **Speaker maximum output power:** 1500 Watts
- **Frequency response:** 500 Hz
- **Connectivity technology:** wired
- **Audio output mode:** Surround

## Images

![Alphasonik AS12DF 12'' 1500 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Under Seat Subwoofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Air Tight Sealed Bass Enclosure - Image 1](https://m.media-amazon.com/images/I/81-EZc80EgL.jpg)
![Alphasonik AS12DF 12'' 1500 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Under Seat Subwoofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Air Tight Sealed Bass Enclosure - Image 2](https://m.media-amazon.com/images/I/71Vy4Gxc0PL.jpg)
![Alphasonik AS12DF 12'' 1500 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Under Seat Subwoofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Air Tight Sealed Bass Enclosure - Image 3](https://m.media-amazon.com/images/I/71LbW4glBgL.jpg)
![Alphasonik AS12DF 12'' 1500 Watts 4-Ohm Down Fire Shallow Mount Flat Enclosed Under Seat Subwoofer for Tight Spaces in Cars and Trucks, Slim Thin Loaded Air Tight Sealed Bass Enclosure - Image 4](https://m.media-amazon.com/images/I/71X8NuzsE3L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nice bass
*by G***E on 28 April 2026*

Really filled in the low end on my system. Installed in a 2014 Raptor SCAB

### ⭐⭐⭐⭐⭐ Killer subs at insane prices!
*by B***N on 15 November 2020*

I first bought the 8 inch Alphasonik sub for wife's Dodge Journey. She's not fussy with audio so I got her the 8" which I wasn't expecting to be earth shaking. It was small, the price was right and it got great reviews on Amazon. I was pleasantly surprised by the amount of punch from this little thing! I'm powering it with a JL Audio 250 watt mono amp. As a quasi-audiophile I wasn't looking for thunderous, muffled bass, but I wanted to fill out the bottom end with a faithful reproduction of the 50-100hz range. I loved the 8" sub so much that I ordered the 10" one for my Dodge Ram 1500--knowing that I'd love it. I'm powering that with a Pioneer 4 channel 4/3/2 amp. It hits a good bit harder than the 8" and I'm a satisfied customer! Above all this, the subs are priced at budget-level yet they yield big-buck performance. They have the construction and heft of much more expensive equipment. I don't know how they do it. I had a $199 10" Kicker sub a few years ago and it was on par with the AS10DF. I can't believe your equipment doesn't have a bigger presence on the internet.

### ⭐⭐⭐⭐⭐ Sounds great
*by D***N on 20 April 2023*

Really good crips sound. Packs a punch for sure. Deep bass The shop I had install the box was surprised at the sound for its size Definitely worth the money. I’d recommend 100%

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-08-27*