Buy affordable 8 inch flat subwoofers online at the Carhifi online shop Masori
If you value punchy bass reproduction in your car but only have limited space, an 8 inch flat subwoofer is the perfect solution. These especially slim bass speakers can be easily integrated into vehicles of various brands such as Audi, VW, BMW, Mercedes, SEAT, or Opel, providing an impressive sound upgrade. At the Carhifi online shop Masori, you'll find a wide range of high-quality ultra-slim subwoofers that deliver powerful deep bass despite their compact size. Thanks to optimized installation depth, these sub-bass systems are ideal for tight spaces such as behind panels, under seats, or in small trunks.
Extensive range of renowned brands
At Masori you will find models from, among others:
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Crunch – Robust 8-inch bass speakers with clear low-frequency reproduction
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ESX – Variants with a wide selection of impedance (2 Ohm or 4 Ohm) and broad power range
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Ground Zero – Innovative designs for punchy bass performance
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Hifonics – High efficiency and precise sub-bass for every music genre
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Rockford Fosgate – Proven technology for reliable sound in the car
Each manufacturer offers its own enclosure technologies and diaphragm materials, developed for different requirements in the car audio sector. Whether you're looking for maximum durability with Crunch, prefer ESX for its flexible connections, or rely on the distinctive bass performance of Ground Zero: there is always a suitable solution for your vehicle and your listening preferences.
Important technical data and performance ranges
A compact car audio woofer with a 20 cm diameter is capable of delivering a surprisingly broad bass foundation without taking up much space. Some key figures of these shallow subwoofers:
- Impedance ranges mostly from 2 Ohm to 4 Ohm for flexible combinations with amplifiers
- RMS power depending on the model between 200 watts and 800 watts
- Typical frequency coverage of about 30 Hz to 180 Hz
- Optimized installation depths between 60 mm and 90 mm for more room in the car
Designs with aluminum or steel baskets provide stability, while sturdy membranes made of polypropylene or paper composite enable dynamic bass impulses. For demanding sound enthusiasts, ventilation systems in the magnet area are also integrated to ensure efficient cooling.
Tabular overview of typical values
| Brand |
Impedance (Ohm) |
RMS Power (Watts) |
Frequency Range (Hz) |
Installation Depth (mm) |
| Crunch |
2 / 4 |
up to 400 |
35 – 180 |
approx. 70 |
| ESX |
2 / 4 |
300 – 500 |
30 – 190 |
approx. 65 |
| Ground Zero |
2 / 4 |
350 – 600 |
32 – 180 |
approx. 75 |
| Hifonics |
2 / 4 |
400 – 700 |
35 – 200 |
approx. 80 |
| Rockford Fosgate |
2 / 4 |
500 – 800 |
30 – 180 |
approx. 68 |
Tips for installation in the vehicle
Proper installation of your 8-inch slim subwoofer is crucial for deep bass and excellent sound inside the cabin. Consider the following aspects:
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Installation location: Under the seat, in the side panel, or in the spare wheel well
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Space requirements: Sufficient air circulation for cooling to avoid overheating
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Cable quality: High-quality power and RCA cables to minimize signal loss
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Polarity and crossover frequencies: Correct wiring for clean bass and proper interaction with front speakers
If you don't feel confident installing it yourself, you can use the professional service at MasoriOn-site installation service in Frankfurt Oder available to ensure perfect integration.
Accessories and adjustments
For a successful installation in the car audio sector, Masori offers all the necessary equipment:
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Amplifier kits: Complete sets with fuse blocks, power cables, and crimp connectors
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Plug&Play adapters: Specially matched cable sets for BMW, VW, Seat, and Opel
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Resonance dampers: Aluminum butyl mats to reduce vibrations in doors and trunk
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Matching enclosures: Special under-seat enclosures or flat MDF constructions
With proper damping and precise placement, the compact bass speaker can reach its full potential. Additionally, disturbing background noises can be effectively reduced, so the bass sounds precise and targeted.
Plug&Play solutions for various car audio requirements
Some manufacturers like ESX and Hifonics offer so-called Plug&Play variants that harmonize with factory radios of numerous vehicle brands. These solutions simplify installation thanks to matched adapters and also allow amateurs a quick connection. Whether you want to use an Opel power distributor or a Seat wiring harness: with the right mounting accessories, you significantly reduce the effort in the car.
Expert service and AI chatbot at Masori
If you have questions or are looking for further information on specific products, our team is always available to assist you. Through the Expert Support you receive competent advice on integration into your vehicle. You can also use our AI chatbot to quickly check the compatibility of a specific 8-inch flat subwoofer with your car audio system. This way, you find out in no time which woofer fits your car audio setup.
If you're looking for a particularly powerful or even just a subtle sound upgrade with a slim submodule, 8-inch flat subwoofers are exactly the right choice. Thanks to various ohm configurations, high RMS values, and slim profiles, almost any vehicle is suitable for powerful deep bass frequencies. Also benefit from attractive offers, optimized enclosures, and extensive accessories at Masori to take your car audio experience to the next level.