---
product_id: 176765589
title: "SWT-12S4 1500W Max (300W RMS) Single 12\" Sealed Subwoofer Tube Enclosure"
brand: "alpine"
price: "1792 zł"
currency: PLN
in_stock: true
reviews_count: 5
category: "Alpine"
url: https://www.desertcart.pl/products/176765589-swt-12s4-1500w-max-300w-rms-single-12-sealed-subwoofer
store_origin: PL
region: Poland
---

# 92dB Sensitivity 12-inch Subwoofer Diameter 1500W Max Power SWT-12S4 1500W Max (300W RMS) Single 12" Sealed Subwoofer Tube Enclosure

**Brand:** alpine
**Price:** 1792 zł
**Availability:** ✅ In Stock

## Summary

> 🎵 Unleash the bass beast – your ride’s new heartbeat!

## Quick Answers

- **What is this?** SWT-12S4 1500W Max (300W RMS) Single 12" Sealed Subwoofer Tube Enclosure by alpine
- **How much does it cost?** 1792 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/176765589-swt-12s4-1500w-max-300w-rms-single-12-sealed-subwoofer)

## Best For

- alpine enthusiasts

## Why This Product

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

## Key Features

- • **High Sensitivity at 92dB:** Delivers clear, impactful bass with minimal power—efficiency meets performance.
- • **Powerful 1500W Max Output:** Feel every beat with deep, room-filling bass that commands attention.
- • **Sleek Alpine Black Carpet Finish:** Professional look with iconic Alpine branding that fits seamlessly in any vehicle.
- • **Complete Installation Kit Included:** Mount with confidence using brackets, belts, and a heavy-duty grill for durability and style.
- • **Precision-Tuned 12" Sealed Enclosure:** Optimized tube design for tight, punchy bass that elevates your sound experience.

## Overview

The Alpine SWT-12S4 is a 12-inch sealed subwoofer tube enclosure delivering up to 1500W max power and 300W RMS, designed to enhance bass depth and clarity in vehicle audio systems. Featuring a 4-ohm impedance and 92dB sensitivity, it ensures efficient, powerful sound output. The package includes installation brackets, belts, and a heavy-duty grill, all wrapped in a sleek black carpet finish with the Alpine logo, making it a perfect upgrade for audiophiles seeking rich, immersive bass on the go.

## Description

1500W Max Single 12" Sealed Subwoofer Tube Enclosure 12” (30cm) High-Performance Subwoofer Peak Power: 1500W RMS Power: 300W Overall Dimensions 12.75” x 26” Frequency Response 28-200Hz Speaker Impedance: 4 Ω Sensitivity: 92dB/W (1m) Stitched Alpine Logo Included Installation Brackets and Belts Heavy Duty Subwoofer Grill Subwoofer Features: 12" Passive Subwoofer Push SPK Terminal Voice coil size/type Sensitivity: 92dB Enclosure Features: Tube enclosure Black Carpet Finish with White Alpine Logo Grille included

Review: I bought my 12" Alpine sub for VW Passat. First was 8" 150W one :-( Alpine Fits perfectly with extra room left in any dimention. Quick easy connection with banana plugs. In my case plugs not so secure in place. Had disconnection issue. Always mount and secure sub to the floor before use. Do not let it roll in the trunk for max performance. Or operating at all lol Sub very boomy on max. I would recomment installation of Bass knob too for volume adjustment. Tube subs Not situable for quick bass. Like in Techno music. Pop music sounds wonderfull. Bass Very deep and enjoyfull with right music.
Review: Très peu spacieux et très efficace, de très bonne performance… bonne basse! 👍

## Features

- 1500W Max Single 12-inch sealed subwoofer is perfect for maximizing bass
- Reinforces overall bass output
- Helps to channel sound and improve performance
- Includes installation brackets and belts
- Features a heavy-duty subwoofer grill

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07MXND918 |
| Colour | black |
| Compatible devices | Laptop, Smartphone, Tablet |
| Control method | Touch |
| Guaranteed software updates until | unknown |
| Impedance | 4 Ohms |
| Included components | mounting brackets, belts and heavy subwoofer grille |
| Is waterproof | False |
| Item model number | SWT-12S4 |
| Item weight | 25 Grams |
| Manufacturer | Alpine |
| Number of items | 1 |
| Power source | Corded Electric |
| Product dimensions | 32.4D x 66W x 32.4H centimetres |
| Recommended uses for product | For surround sound systems |
| Speaker size | 12 Inches |
| Subwoofer diameter | 12 Inches |
| Surround-sound channel configuration | 1.0 |
| Warranty type | Extended |
| Wireless communication technology | Bluetooth |

## Product Details

- **Audio output mode:** Surround
- **Brand:** Alpine
- **Connectivity technology:** Bluetooth, Wired
- **Frequency response:** 200 Hz
- **Material:** Thermoplastic Polyurethane (TPU)
- **Model name:** SWT-12S4
- **Mounting type:** Floor Standing
- **Speaker maximum output power:** 1000 Watts
- **Speaker type:** Subwoofer
- **Special feature:** Push SPK Terminal, Bluetooth Connectivity

## Images

![SWT-12S4 1500W Max (300W RMS) Single 12" Sealed Subwoofer Tube Enclosure - Image 1](https://m.media-amazon.com/images/I/51oquWDcjyL.jpg)

## Questions & Answers

**Q: Is an amp needed with this or is there one preinstalled?**
A: You will need an amp. I have an Autotek 1500 class D. A bet overpowered but gains and crossover set right. Sounds pretty good, yet struggles at super low notes. I plan on upgrading the sub later. Good build, solid.

**Q: Is that a port I see in the image?**
A: Exactly what I saw.. ported in picture but sealed in listing. They need to get it together

**Q: What do you mean by fast bass?**
A: It doesn’t have to wait to warm up the voice coil

**Q: Is a kenwood xr601-1 excelon 600-watt monoblock rated at 400 watts rms at 4 ohms single to much amp for this subwoofer?**
A: Nope...I have that much power and still believe it can handle more

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by N***S on 18 February 2021*

I bought my 12" Alpine sub for VW Passat. First was 8" 150W one :-( Alpine Fits perfectly with extra room left in any dimention. Quick easy connection with banana plugs. In my case plugs not so secure in place. Had disconnection issue. Always mount and secure sub to the floor before use. Do not let it roll in the trunk for max performance. Or operating at all lol Sub very boomy on max. I would recomment installation of Bass knob too for volume adjustment. Tube subs Not situable for quick bass. Like in Techno music. Pop music sounds wonderfull. Bass Very deep and enjoyfull with right music.

### ⭐⭐⭐⭐⭐ Review
*by S***A on 20 June 2021*

Très peu spacieux et très efficace, de très bonne performance… bonne basse! 👍

### ⭐⭐⭐⭐⭐ Review
*by B***. on 15 July 2021*

This thing hits hard. I have it hooked up to a Rockville that pushes 360 watts rms. I tuned the amp to the subwoofer and when the bass drops you feel your insides shaking and it almost takes your breath away! My windshield shakes so hard my rearview mirror won't stay in position! I do have the gain turned down on my amp slightly to match the recommended rms watts of the subwoofer. For the price and the quality of sound I would definitely recommend to friends, family and neighbors or anyone else asking "WHAT DO YOU HAVE IN THERE?!"

## Frequently Bought Together

- Alpine SWT-12S4 1500W Max (300W RMS) Single 12" Sealed Subwoofer Tube Enclosure
- Skar Audio 4 Gauge Amplifier Wiring Kit - Blue, Copper Clad Aluminum, SKAR4ANL-CCA
- Alpine S-A60M S-Series Class D Mono Amplifier

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-24*