# Car Subwoofer BLOW WK400 4 Ω 110W - low-frequency car speaker

**URL:** https://aio.lv/en/product--blow-3923--12064006
**Data updated:** 2026-03-12 21:43 (EET)
**Category:** Car Speakers
**Manufacturer:** BLOW
**Manufacturer code:** 3923#
**EAN:** 5900804108320
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 19.49 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 16.11 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--blow-3923--12064006

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

BLOW WK400 is a car subwoofer designed for reproducing low-frequency sound in vehicle audio systems. Rated impedance 4 Ω and nominal power 110W, it provides bass reinforcement for car stereos and aftermarket speaker setups. Suitable for installation in enclosures or custom boxes to improve low-end response in cars, vans and small vehicles.

## Long description

BLOW WK400 is a car subwoofer designed to reproduce low-frequency sound in vehicle audio systems. With a rated impedance of 4 Ω and nominal power of 110 W, this low-frequency car speaker is intended to reinforce bass in factory or aftermarket stereo setups. The driver is suitable for installation in sealed or ported enclosures and can be integrated into compact boxes to improve low-end response in cars, vans and other small vehicles.
Advantages
The subwoofer offers a balance of nominal power and moderate impedance that matches many common car amplifiers, enabling deeper bass without excessive power demands. Its construction is optimized for car interiors and custom boxes, allowing predictable low-frequency performance in confined spaces. The design supports both sealed and vented enclosure installations, providing flexibility for different tuning goals and available installation space.
Suitable for
Enhancing bass in factory or aftermarket car audio systems
Installation in sealed or ported subwoofer enclosures
Use in compact enclosures for small cars, vans, and light commercial vehicles
Integration with mid-power car amplifiers and head units
Key specifications
Nominal impedance: 4 Ω
Nominal power: 110 W
Application: low-frequency car speaker / subwoofer
Suitable enclosure types: sealed and ported
Recommended use: car, van and small vehicle audio systems
How to use
Install the BLOW WK400 in a suitably sized enclosure according to the chosen tuning (sealed for tighter bass, ported for extended low-end). Connect the subwoofer to a compatible amplifier channel, observing polarity and matching impedance to avoid overheating the amplifier. Secure the driver to the box with appropriate screws and use a gasket or sealant where necessary to prevent air leaks. Apply correct crossover settings on the head unit or amplifier to limit frequencies above the intended subwoofer range, and gradually increase gain while monitoring distortion and thermal load.
Usage recommendations
For best results, pair the subwoofer with an amplifier that can deliver stable power close to the subwoofer’s nominal rating into 4 Ω. Choose the enclosure size and tuning based on desired bass character: smaller sealed boxes for punch and control, larger ported boxes for deeper extension. Ensure secure mounting and adequate ventilation for the amplifier to maintain reliable operation during extended listening.

## FAQ

### How much does the Car Subwoofer BLOW WK400 4 Ω 110W cost, and is it available for purchase?

The price is 19.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 83 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 15.07.2026 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. All transactions are 100% secure and encrypted.

### 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 BLOW 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 BLOW 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/12064006/67549334_large.webp