# Kruger&Matz KMI300X 12-inch Car Subwoofer Boombox with Integrated Amplifier

**URL:** https://aio.lv/en/product--oem-kmi300x--12411232
**Data updated:** 2026-05-11 23:10 (EEST)
**Category:** Car Speakers
**Manufacturer:** OEM
**Manufacturer code:** KMI300X
**EAN:** 5901436780632
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 230.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 190.90 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--oem-kmi300x--12411232

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.06.2026 | free |
| Courier delivery to door | 01.07.2026 | 53.99 EUR |

## Summary description

The Kruger&Matz KMI300X is a 12-inch active car subwoofer boombox featuring a built-in amplifier. Designed to enhance low-frequency audio performance in vehicle sound systems, this unit provides deep, powerful bass output. Its integrated design simplifies installation, making it an efficient solution for upgrading car audio setups with high-quality sound reproduction.

## Long description

The Kruger&Matz KMI300X is a 12-inch active car subwoofer boombox engineered to deliver robust low-frequency performance for vehicle audio systems. This all-in-one unit features a high-excursion 12-inch driver paired with a factory-integrated amplifier, eliminating the need for external power components. The enclosure is designed to optimize acoustic resonance, ensuring deep and impactful bass reproduction that enhances the overall clarity and depth of your car audio experience.
Advantages
The primary benefit of the Kruger&Matz KMI300X is its integrated design, which significantly streamlines the installation process by combining the subwoofer and amplifier into a single housing. This configuration ensures perfect electrical matching between the driver and the amplifier, resulting in consistent and reliable sound output. The sturdy construction of the enclosure minimizes unwanted vibrations, allowing for clean bass delivery even at higher volume levels. Its compact footprint relative to its performance makes it an efficient choice for users looking to improve their sound system without extensive modifications.
Suitable for
Enhancing bass response in factory car audio systems
Users seeking a simplified, all-in-one subwoofer installation
Upgrading vehicle sound systems for a more immersive listening experience
Compact vehicle trunks where space-efficient audio solutions are required
When it may not be suitable
This subwoofer may not be ideal for users who require ultra-compact or slim-profile enclosures for extremely tight spaces, as the 12-inch driver and integrated amplifier require a specific volume of space to function correctly. Additionally, it may not satisfy audiophiles looking for highly customizable, multi-component sound systems that require separate, high-power external amplifiers for competition-level sound pressure.
Key specifications
Driver size: 12 inches
Integrated amplifier: Yes
Design: Active boombox enclosure
Purpose: Low-frequency audio enhancement
How to use
Installation involves securing the boombox in the vehicle's trunk or cargo area to prevent movement during transit. Connect the unit to your car's head unit using appropriate RCA or high-level inputs, and ensure a stable power connection directly to the vehicle's battery with an inline fuse for safety. Once connected, adjust the gain and crossover settings on the integrated amplifier to match your vehicle's existing speakers for a balanced sound profile.
What to consider before purchase
Available trunk space for the enclosure dimensions
Compatibility with your existing car head unit
Power supply requirements for the integrated amplifier
Proper wiring kit availability for installation
Usage recommendations
To achieve the best sound quality, ensure the subwoofer is securely mounted and positioned to allow for optimal sound wave dispersion within the vehicle cabin. Regularly check all electrical connections to maintain performance and safety.

## FAQ

### How much does the Kruger&Matz KMI300X 12-inch Car Subwoofer with Amplifier cost, and is it available for purchase?

The price is 230.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 106 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 26.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Kruger&Matz KMI300X 12-inch Car Subwoofer with Amplifier be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All OEM products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized OEM service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12411232/68741609_large.webp