Subwoofer Focal SUB 20 SF
8" subwoofer, 200 W RMS, 87 dB (SPL 2,83V/1m), 4 Ω
More about the product
More about the product
We will help you with your purchase
- You can return the goods to us within 14 days
Focal SUB 20 SF
Focal SUB 20 SF is a compact 200mm subwoofer from the Slatefiber range, designed to provide a high-quality extension of low frequencies in a car audio system. Thanks to its smaller diameter it is suitable for installations where there isn't enough space for a larger subwoofer, yet the customer still demands a firm, fast and precise bass foundation.
The Slatefiber cone uses a combination of recycled carbon fibers and a thermoplastic polymer, which offers a very good balance of stiffness, low mass and internal damping. This helps the subwoofer play in a controlled manner, with quick response and without unnecessary booming, which is a common problem in cheaper subwoofers.
The Focal SUB 20 SF is an ideal choice for customers who want to complement their sound system with precise and musical bass without the need to install a large subwoofer. It performs best in combination with an amplifier and a properly designed enclosure, where it can deliver the typical Focal sound – clean, dynamic and well-defined even at low frequencies.
Hlavní vlastnosti
- Compact 200mm subwoofer from the Focal Slatefiber line.
- Suitable for supplementing low frequencies in a high-quality car audio system.
- Slatefiber cone made from recycled carbon fibers and a thermoplastic polymer.
- Excellent ratio of stiffness, low weight and internal damping.
- Firm, fast and precisely controlled bass performance.
- Musical sound without unnecessary booming.
- Ideal solution for installations with limited space.
- Suitable for use with a dedicated amplifier.
- Perfectly complements speakers from the Focal Slatefiber range.
- High-quality workmanship typical of Focal's premium products.
O značce
If you are a lover of high-quality sound and are looking for a top audio setup for your car, you have surely heard of Focal. This French manufacturer is synonymous with excellent acoustics and high quality, whether it's home audio, headphones or car audio systems. The company Focal was founded in 1979 in France and since its inception has established itself as a leader in innovation and the precise manufacturing of audio equipment. The brand quickly gained a reputation thanks to its innovative technologies, quality materials and meticulous handcrafting. Focal specializes in the development of speakers, amplifiers and subwoofers, whether for home cinema, headphones or the automotive segment. At Ahifi you will always find the current range specifically for vehicle sound systems.| Catalog number | SUB20SF |
| Brand | Focal |
| Links | Official web presentation |
| Subwoofer diameterThe diameter of the subwoofer is indicated on the screw holes. The overall outer diameter of the subwoofer is usually 1-2 cm wider, depending on the size category of the subwoofer. For a 30 cm subwoofer, the outer diameter incl. protective rubber 31.8 cm and in the 25 cm subwoofer it is 26.5 cm incl. protective rubbers. | 200 mm (8") |
| RMS powerThe RMS power of the subwoofer is the constant power of continuous use of the subwoofer. If the power is exceeded for a longer period of time, irreversible damage may occur, or to burn out the voice coil of the subwoofer. | 200 W |
| Max. (maximum performancePeak performance , which the subwoofer can play momentarily (approx. 0.5 s), for example when hitting drums in a song. If the maximum power is exceeded, damage can quickly occur, or to burn out the voice coil of the subwoofer. | 400 W |
| Sensitivity (SPL 2.83V/1m)Subwoofer sensitivity or efficiency. The sensitivity of the subwoofer is given in decibels (dB) and, in simple terms, means that the higher the value, the lower the demands on the power of the amplifier. This is a de facto rating of how a subwoofer converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the subwoofer using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the subwoofer is louder with less power. For every 3 dB increase in sensitivity, the subwoofer requires half the power to reproduce the same volume. For example, if an 88 dB subwoofer needs 300 Watts to produce a certain volume, then a subwoofer with 91 dB sensitivity needs only 150 Watts to reach the same efficiency. | 87 dB |
| ImpedanceImpedance - measurement of electrical resistance. When buying a subwoofer, it is very important that everyone make sure that the impedance matches the amplifier that you are connecting to it. For subwoofers with a double voice coil, we recommend following the information in the advice center! Example: A 2 Ohm subwoofer cannot be connected to an amplifier that is only stable up to 4 Ohms. A 4 Ohm subwoofer can easily be used on an amplifier that is stable up to 2 Ohms. Connecting a 4 Ohm subwoofer to an amplifier that is stable up to 4 Ohms also without problems. The most common subwoofer impedance is 4 Ohm. | 4 Ω |
| Subwoofer diaphragm materialThe specific material from which the subwoofer membrane is made. | Fiberglass |
| Subwoofer mounting depthThe mounting depth of the subwoofer is measured from the bottom edge of the magnet to the bottom edge of the subwoofer's metal or cast basket. | 90 mm |
| Subwoofer voice coil diameterThe larger the diameter of the voice coil, the more load capacity the subwoofer has, in layman's terms. | 52 mm |
| Fs - resonant frequencyFs - is the lower resonant frequency. This parameter is the de facto free air resonant frequency of the subwoofer. Simply put, it is the point at which the weight of the subwoofer's moving parts equals the force of the subwoofer's suspension while it is in motion. If you've ever seen a piece of string start to hum uncontrollably in the wind, you've seen the effect of reaching a resonant frequency. The weight of the moving parts and the stiffness of the suspension (surround and spider) are key elements that affect the resonant frequency. As a general rule, a lower Fs indicates a subwoofer that would be better at reproducing low frequencies than a subwoofer with a higher Fs. However, this is not always the case, as other important parameters of the subwoofer also enter the resulting sound. | 36 Hz |
| Xmax + -Xmax - the maximum deflection of the subwoofer diaphragm in one direction – it is not a sum, or an abbreviation for the maximum linear deflection. The subwoofer output becomes non-linear as the voice coil begins to leave the magnetic gap. | 10 mm |
Evaluation
ask us