High-quality 3-inch coaxial speakers for car audio systems at affordable prices in the Carhifi online shop Masori
If you're looking for a space-saving audio setup with powerful sound in your car, 3-inch coaxial speakers (8 cm) offer a compelling solution. Thanks to the integrated tweeter and woofer, they combine brilliant highs with precise mids in a single chassis. Cars from Audi, VW, BMW, Mercedes, SEAT, or Opel all benefit equally from these compact systems. Especially when there is little space in the dashboard or front doors, these mini speakers provide a smart answer. Manufacturers like Audio System, Cerwin Vega, Hifonics, or Rebec design variants with different constructions, resulting in a wide range of options. The ability to integrate them almost anywhere also makes them the ideal retrofit component for classic cars.
What makes 3" coaxial speakers technically special
The combination of tweeter and woofer greatly simplifies installation and saves valuable space. A typical 3-inch model has an impedance of 4 Ohms, a frequency response of approximately 100 Hz to 20,000 Hz, and a sensitivity of about 85 dB to 90 dB. These values ensure powerful mids and clear highs even with limited amplifier power. Depending on the design, some models can be connected directly to the factory car radio. For more power, variants with RMS ratings between 25 watts and 60 watts are available, which reproduce even louder music peaks without distortion thanks to their higher load capacity.
- Diameter: 8 cm (3 inches)
- Impedance: Usually 4 Ohms
- RMS Power: Between 25 W and 60 W
- Frequency Range: 100 Hz – 20 kHz (model dependent)
- Sensitivity: 85 dB – 90 dB
Typical installation locations and suitable accessories
The low installation depth of about 38 mm to 50 mm makes many 3-inch coaxial speakers compatible for doors, dashboards, or rear areas. Some manufacturers like Crunch or ESX provide matching mounting rings and cable sets, allowing the speakers to be installed without complicated adjustments. In vehicles like the VW Golf, BMW 1 Series, or Audi A3, it is often only necessary to remove the original speaker grilles and use suitable adapters.
For reliable mounting and optimized sound, special damping material and sealing tapes should be used to minimize vibrations. Those who want to have their system professionally installed in Frankfurt an der Oder can use the installation service. On request, plug-and-play solutions are also configured there, which further reduce the effort.
Performance and load capacity at a glance
Depending on individual listening preferences, the market offers a wide range of performance data. While simple entry-level models with 25 watts RMS already deliver decent power, high-power versions with 50 watts or more are designed for loud music fans. It is important to match the performance data to the existing or planned amplifier to avoid overloads or power losses. In high-quality systems, the membranes are made of polypropylene, which guarantees precision in the bass range. Tweeters with aluminum or silk domes provide brilliant sound in the treble range.
| Model |
Power (RMS) |
Frequency Range (Hz) |
Sensitivity (dB) |
Mounting Depth (mm) |
| Audio System R 3 |
40 W |
100 – 22,000 |
89 |
42 |
| Cerwin Vega CV 3 |
35 W |
110 – 20,000 |
87 |
40 |
| Hifonics ZS 3 |
50 W |
90 – 21,000 |
90 |
45 |
| Rebec RT 3 |
60 W |
95 – 23,000 |
88 |
38 |
Various manufacturers and their special features
Manufacturers like Autotek and Crunch focus on models with high efficiency, which is especially advantageous if you don't install a separate amplifier. Cerwin Vega, on the other hand, stands out for its robust construction, delivering clean sound even under heavy use. Hifonics offers high-end models with an extended frequency range and particularly sensitive tweeters, while Audio System, with their many years of experience in the car audio segment, produces highly versatile all-rounders.
Rebec has earned its reputation among enthusiasts through detail-oriented component speakers, which also impress in the coaxial range. Some Rebec speakers are designed for special impedance requirements so they can be easily connected in parallel without overloading the amplifier.
Plug-and-play classics for various car models
Those who want to simplify installation choose plug-and-play sets. These are already equipped with the appropriate adapters and connector types. Especially in common vehicles like BMW 3 Series, SEAT Leon, Opel Corsa, or VW Polo, it is enough to remove the original speakers with a few simple steps and connect the new coaxial speakers. The result: clear highs and well-defined bass foundation despite compact size. If there is any uncertainty about compatibility, the expert support provides individual advice. The AI chatbot also assists in checking whether a model is suitable for a specific door panel.
Technical details for sound enthusiasts
Even in the just 8 cm speakers, elaborate constructions can be found that enable extended reproduction up to high frequency ranges. Especially the material of the voice coil (for example, CCAW or pure silver wire) and the shape of the magnet (ferrite or neodymium) play a role. Neodymium magnets are characterized by higher magnetic force at low weight and are therefore perfect for tight installation spaces. The dust cap and the surround (often made of rubber) also influence the sound character: A stiff dust cap can provide more precise mids, while an elastic rubber surround gives the membrane more freedom of movement.
Why powerful coaxial systems are often underestimated
Many car enthusiasts initially focus on woofers or subwoofers to achieve deep bass. However, it is often forgotten that the smaller speakers in the mid and high frequency range are responsible for the fine detail of the music. A 3" coaxial speaker can radiate high frequencies very directly and, combined with the right amplifier, provides a clear soundstage. So anyone looking for an all-round solution that offers great sound in a small space will significantly enhance their entire listening experience with an upgrade in this area.
Installation tips and services for even more convenience
- Check the existing dimensions in the car carefully and pay attention to the correct mounting depth.
- Use adapter rings if necessary for a stable connection to the vehicle chassis.
- Use crossovers if you want an even more precise separation between high and low frequencies.
- Use damping material to reduce resonances in the doors.
- In case of uncertainty or to save time, use the professional installation service in Frankfurt an der Oder.
Wide range of variants for individual wishes
The market has something for every taste. Those looking for an affordable option will already find models with impressive power among Crunch or ESX speakers. For demanding audiophiles, Hifonics offers extremely robust systems with powerful magnetic drives. Cerwin Vega impresses fans of powerful music genres with precise bass. Autotek stands out with high sensitivity, perfect for radio operation without a separate amplifier. And Rebec scores with variants that deliver hi-fi-oriented delicacies in sound quality.
Why an upgrade is worthwhile
Replacing the factory-installed speakers with high-quality 3" coaxial models results in a significant improvement in sound, volume, and spatiality. Since many vehicles come from the factory with only simply constructed full-range speakers, much detail is often lost. With specially adapted coaxial speakers, it is possible to:
- Realize finer treble accents
- Achieve more precise midrange reproduction
- Reach higher volumes without distortion
- Make individual sound adjustments
Last but not least, the dashboard or door panel remains largely original since no additional hole for separate tweeters is needed.
Carhifi online shop Masori: Wide selection and professional advice
In the Carhifi online shop Masori, interested customers will find a wide range of 3-inch coaxial speakers that meet both requirements: compactness and impressive sound dynamics. With the help of an extensive filter function, the right product can be selected according to RMS values, impedance, installation depth, and frequency range. In addition, the Support can be contacted to clarify individual questions. The AI chatbot is available 24/7 to check compatibility with different vehicle brands. Those who value personal advice can reach the team by phone or directly in the shop.
Additional products and services for your system
To further refine the sound result, it is worth taking a look at complementary components. A suitable amplifier or a DSP (Digital Sound Processor) can get the maximum out of the speakers. Damping material reduces annoying rattling of the door panels and enhances bass performance. Masori also offers plug adapters and complete installation kits to ensure a stress-free installation.
Examples of extended accessories
- Adapter rings: For various vehicle brands like Audi, Opel, Mercedes
- Damping material: Alubutyl or foam inserts
- Wiring harness: Plug-and-play kits with pre-assembled connectors
- Crossovers: Internal or external models, depending on requirements
- DSP: For individual fine-tuning of the sound curve
With all these options, everyone can precisely tailor their car sound system to their own listening habits and professionally upgrade audio quality without sacrificing much space.