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  5. PRA 10

PRA 10

2 reviews

50 Watt

PRA 10

2 reviews

Technical Highlights

  • Equipped with a 3-ohm voice coil for maximum performance.
  • Resonance frequency 96 Hz, rated power 50/80 W, sound pressure 86 dB.
  • Effective cone area 50 cm², inductance 0.11 mH, weight 5.9 g.
  • More technical details
€156.27
-13% €179.00 €156.27
2% discount with credit card

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ProductPRA 10

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datasheet
ETONPRO 80
ETON-PRO 80-3" (8cm) Mitteltöner-masori-kaufen
ETON-UG Opel RX 2.1-Opel-Lautsprecherset-masori-kaufen
ETONUG Opel RX 2.1
ETON-PRA 10-4" (10cm) Lautsprecherset-masori-kaufen
€156.27
€179.00 €156.27

The PRA 10 speaker set from Eton stands out for its high-quality components and craftsmanship. Featuring a 100 mm (4 inch) woofer/midrange driver that uses a special paper-glass fiber diaphragm, it delivers outstanding sound quality. The powerful ferrite magnet ensures optimal cooling, while the aluminum dome tweeter with fabric surround provides the finest acoustic details. A high-performance 3-ohm voice coil enables maximum output even without an external amplifier. Additional features include the 12 dB inline crossover, various mounting housings, and a shallow installation depth of just 45 mm. Developed in Germany, the set offers a nominal power handling of 50 watts RMS and a music power handling of 80 W with a characteristic sound pressure of 90 dB.

Product Features

100 mm (4 inch) woofer/midrange driver with ribbed paper-glass fiber diaphragm, manufactured using a special production process. Powerful ferrite magnet with large core hole for optimal cooling. Reinforced, powder-coated metal basket in double-strut design with additional ventilation openings. High-performance 3-ohm voice coil for maximum output even without an additional amplifier, directly from the factory radio / head unit. 25 mm (1") aluminum dome tweeter with fabric surround for the finest details, including high-quality 12 dB inline crossover, surface and flush mounting housings with swivel & tilt function. 50 watt RMS nominal power handling, 80 W music power handling with a characteristic sound pressure of 90 dB (2.83V/1m). 100 / 124 mm outer diameter and 91 mm cutout diameter. Shallow installation depth of 45 mm. Developed in Germany.

Technical Data

  • Nominal impedance Zn 3 Ω
  • Total moving mass (incl. air mass) MMD 5.9 g
  • DC resistance Re 2.6 Ω
  • Effective diaphragm area SD 50 cm²
  • Voice coil inductance Le 0.11 mH
  • Resonance frequency TSP fr 96 Hz
  • Force factor BLxl 3.4 Tm
  • Suspension compliance CMS 0.46 mm/N
  • Mechanical Q QMS 3.1
  • Xmax mechanical +/- 6.9 mm
  • Electrical Q QES 0.83
  • Equivalent air volume of suspension VAS 1.7 dm³
  • Total Q QTS 0.65
  • Characteristic sound pressure level 1 W / 1 m 86 dB
  • Mechanical resistance RMS 1.15 kg/s
  • Nominal power 50/80 W
  • Magnet material Ferrite
  • Voice coil diameter 25 mm

datasheet

Open data sheet

Frequently Asked Questions about PRA 10

What is special about the paper-glass fiber membrane of the Eton PRA 10?

The paper-glass fiber membrane of the Eton PRA 10 speaker is produced through a special manufacturing process that allows for an optimal combination of stiffness and lightweight. This membrane measures 100 mm and is designed for both low and mid frequencies, giving the speaker a balanced sound quality. The material mix ensures excellent damping and precision in sound, especially with demanding music. These features make the membrane particularly durable and resistant to moisture and temperature changes. Ideal for drivers who value accurate reproduction and longevity.

How does the ferrite magnet contribute to the performance of the PRA 10 speaker?

The ferrite magnet in the Eton PRA 10 is equipped with a large core hole that optimizes the cooling of the speaker and prevents overheating. The magnet provides a stable and high magnetic field strength, which is crucial for the efficient movement of the voice coil and thus the membrane. This design ensures consistent sound performance and supports the 3-ohm voice coil in its ability to deliver high power even without external amplifiers. Especially in acoustically demanding situations, the magnet reveals its full advantages with minimal distortion.

What advantages does the aluminum dome tweeter of the PRA 10 offer?

The 25 mm aluminum dome tweeter of the Eton PRA 10 has been specifically designed to extract the finest acoustic details. The use of aluminum allows for high strength at low weight, ensuring quick response times and clear reproduction of high frequencies. Additionally, the fabric surround provides a harmonious connection of the tweeter to the overall frequency tuning, which is particularly beneficial for complex music. Whether classical or rock: the tweeter works precisely and is robust against temperature fluctuations and mechanical stresses.

What role does the 3-ohm voice coil play in the PRA 10?

The 3-ohm voice coil of the Eton PRA 10 Speaker allows for maximum power output even without an additional Amplifier, making operation directly at the factory radio or head unit easier. The low impedance ensures that the speaker works more efficiently with the existing electronics and achieves maximum volumes without relying on external Amplifiers. This voice coil is ideal for users looking for high power potential in a compact design, especially for installation in cars with limited space.

What is the installation depth of the PRA 10 and for which vehicles is it suitable?

The Eton PRA 10 Speaker has an installation depth of only 45 mm, making it easier to install in many vehicle types, even with limited space. Thanks to the compact design with an outer diameter of 100 or 124 mm, the Speaker Set fits into many standard speaker openings. The special 12 dB crossover and the universal installation housing with tilt and swivel function facilitate adaptation to various vehicle configurations. Whether compact car or sedan, the versatility in installation makes the PRA 10 an excellent choice for numerous vehicle models.

What influence does the force factor BL have on the sound quality of the Eton PRA 10?

The force factor BL of 3.4 Tm is a measure of the strength of the magnetic field in the Eton PRA 10 and directly affects the effectiveness of the voice coil's movement. A higher BL value means that the voice coil transmits more force to the diaphragm, allowing for more precise movements and thus a clearer and more accurate sound in the bass and midrange. This precise control over diaphragm movements results in clear reproduction even with bass-heavy music tracks and minimizes distortions that can occur at higher volumes.

Why is the resonance frequency of 96 Hz important for the Eton PRA 10?

The resonance frequency of 96 Hz of the Eton PRA 10 means that the speaker is most efficient at this frequency. This is particularly advantageous as many music tracks have important bass information around this range. A speaker that is well-tuned at its resonance frequency ensures that these frequencies are reproduced powerfully and precisely with minimal energy expenditure. This leads to impressive bass performance that does not require an additional Subwoofer, ideal for music lovers who prefer a full and pure sound.

How does the compliance of the suspension CMS affect the performance of the PRA 10?

The compliance of the suspension, specified as CMS 0.46 mm/N, impresses in the Eton PRA 10 with its ability to control membrane movements while allowing for high displacement. This property ensures a durable membrane guidance that provides clear and powerful reproduction in both the bass and midrange. The compliance of the suspension enables the speaker to operate without loss of sound precision even at high volumes, without compromising the structure or sound image, making the PRA 10 ideal for discerning music fans.

How do the Thiele Small parameters influence the sound characteristics of the PRA 10?

The Thiele-Small parameters such as total QTS factor of 0.65, mechanical Q QMS of 3.1, and electrical Q QES of 0.83 provide deeper insights into the acoustic performance of the Eton PRA 10 speaker. A QTS of 0.65 indicates a good balance between bass extension and control, while the QMS value signals high mechanical damping that reduces unwanted resonances. The QES value reveals the electrical damping, which ensures clean signal processing. This combination of parameters allows the PRA 10 to present its full sound range in both open enclosures and compact installation situations.

What is the significance of the mechanical resistance RMS in the PRA 10?

The mechanical resistance RMS of 1.15 kg/s in the Eton PRA 10 describes the ability of the speaker components to withstand mechanical forces without compromising sound reproduction. A well-tuned mechanical resistance helps ensure that no distortions occur even at high volumes or in demanding musical passages. As a result, the speaker delivers a clean, uncolored sound while increasing the durability and longevity of the moving parts. Especially during intense bass passages, the mechanical resistance ensures that the movements of the membrane remain controlled.

Manufacturer information/responsible person

ACR Brändli + Vögeli AG
Roland Brändli
Bohrturmweg 1
5330 Bad Zurzach
Switzerland

Responsible EU Person:
ACR S + V GmbH
Industriestr. 3
79787 Lauchringen
Germany

Contacts: compliance@acr.eu

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