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B2 Audio REF SQ 61 Speaker Complete Set
SKU:  B2-REFSQ61
70 Watt

REF SQ 61

SKU:  B2-REFSQ61

Technical Highlights

  • Maximum power 100 W, RMS power 70 W, impedance 4 ohms.
  • Voice coil 35.5 mm, diaphragm multi-layered carbon fiber, ferrite magnet.
  • Tweeter 25 W RMS, 3 Ohm, double neodymium, 20 kHz, 86.0 dB.
  • More technical details
€499,00
€499,00 €499,00
5% discount with credit card
inkl. VAT , possibly plus shipping
Delivery
Jun 6, - Jun 9,
x set
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REF SQ 61 by B2 Audio

The REF SQ 61 speaker system from B2 Audio offers a powerful and sonically precise solution for your audio needs. With a maximum power output of 100 W and an RMS power output of 70 W, it delivers powerful sound at a 4-ohm impedance. The multi-layer carbon fiber voice coil and high-density ferrite magnet ensure precise reproduction across a frequency range of 50 Hz to 10 kHz with a sensitivity of 87.6 dB. The tweeter with a ceramic dome and internal dual neodymium magnet achieves a sensitivity of 86.0 dB and covers frequencies up to 20 kHz. The robust construction, with a unit weight of 1700 g, makes this system a reliable choice for discerning audiophiles.

midrange driver

  • Maximum power: 100 W
  • RMS power: 70 W
  • Impedance: 4 ohms
  • Voice coil: 35.5 mm (1.4")
  • Membrane: Multi-layered carbon fiber
  • Magnet: High-density ferrite
  • Frequency response: 50 Hz – 10 kHz
  • Sensitivity: 87.6 dB
  • Weight per piece: 1700 g

tweeter

  • Maximum power: 75 W peak / 25 W RMS
  • Impedance: 3.0 ohms
  • Voice coil: 1.0" (25.4 mm)
  • Magnet: Internal double neodymium magnet
  • Cap material: Ceramic
  • Frequency response: fs ~ 20 kHz
  • Sensitivity: 86.0 dB
  • Weight per piece: 150 g

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Frequently Asked Questions about REF SQ 61

What power does the B2 Audio 2 Way 6.5" REF SQ 61 Speaker Set offer?

The B2 Audio 2 Way 6.5" REF SQ 61 offers a maximum power of 100 W and a continuous RMS power of 70 W. These capabilities allow for powerful sound reproduction while maintaining clear and precise sound quality. The power is supported by a multi-layer carbon fiber voice coil of 35.5 mm, which ensures efficient energy transfer. Notably, the tweeter is designed with a peak power of 75 W. Combined with the internal dual neodymium magnet in the tweeter, the sound is further enhanced and gains detail accuracy, especially at high frequencies.

What impedance does the B2 Audio 2 Way 6.5" REF SQ 61 Speaker Set have?

The B2 Audio 2 Way 6.5" REF SQ 61 Speaker Set has an impedance of 4 Ohms. This impedance significantly contributes to sound quality and ensures efficient energy conversion. Due to the high impedance value, the speaker can be used in a variety of audio systems. The impedance affects the load capacity and effectiveness of the speaker and is ideal for balanced sound in conjunction with the voice coil. The tweeter, on the other hand, has an impedance of 3 Ohms, which supports its specific frequency response and sound character, allowing for precise high-frequency reproduction.

What is the frequency response of the B2 Audio 2 Way 6.5" REF SQ 61?

The frequency response of the B2 Audio 2 Way 6.5" REF SQ 61 ranges from 50 Hz to 10 kHz. This allows for the reproduction of a wide spectrum of bass tones to mid frequencies in high quality. The speaker set is capable of safely reproducing low frequencies with its multi-layer carbon fiber diaphragm, while the tweeter is specifically tuned for high frequencies with a frequency response of up to 20 kHz. This ensures a complete sound experience. A frequency response of this bandwidth also ensures that both music and speech can be reproduced clearly and precisely.

What materials were used for the diaphragm of the main speaker?

The diaphragm of the main Speaker Set of the B2 Audio 2 Way 6.5" REF SQ 61 is made of multilayer carbon fiber. The use of this material offers numerous advantages, including high stiffness and low weight, which leads to better sound efficiency. Carbon fiber is known for its exceptional strength and is valued in speaker design as it minimizes distortion and ensures fast response times. This allows for precise reproduction of quick impulse sequences, which is particularly beneficial for powerful and accurate sound reproduction. The carbon fiber diaphragm thus contributes to the excellent performance of the Speaker Set.

What role does the ferrite magnet play in the B2 Audio Speaker?

The B2 Audio 2 Way 6.5" REF SQ 61 uses a high-density ferrite magnet. Ferrite magnets are known for their stable performance and durability. The magnet is essential for the efficiency of the voice coil, as it generates a strong magnetic field that controls the movement of the diaphragm. This property enables the Speaker Set to produce precise and dynamic tones even at high volumes. Ferrite magnets are also thermally stable, meaning that sound quality does not degrade with prolonged use. This makes the B2 Audio Speaker consistently powerful across various music genres.

How much does the B2 Audio 2 Way 6.5" REF SQ 61 Speaker weigh?

The B2 Audio 2 Way 6.5" REF SQ 61 weighs approximately 1700 g per speaker unit, while the tweeter has a weight of 150 g. This weight reflects the robust construction and the use of high-quality materials that promote both stability and durability. A higher weight in speakers can also reduce the resonance frequency, leading to better sound quality. The combination of weight and material choice allows for optimal sound dispersion and minimizes unwanted vibrations or disturbances in the sound image. These factors are crucial for audiophile customers who value precise and uncolored music reproduction.

What are the Thiele Small parameters of the B2 Audio 2 Way 6.5" REF SQ 61?

While specific Thiele Small parameters are not provided in the summary, understanding these parameters in the context of the B2 Audio 2 Way 6.5" REF SQ 61 generally includes aspects such as the aforementioned 4 Ohm impedance, the resonance frequency, and other characteristics like the mechanical quality and the compliance of the suspension. These parameters are necessary for the mathematical model of speaker performance and assist engineers in accurately tuning for specific enclosure volumes and positions. These parameters ensure the balance between efficiency, sound quality, and mechanical stability to achieve optimal audio performance in specific enclosure designs.

Is the B2 Audio 2 Way 6.5" REF SQ 61 compatible with my car?

To check the compatibility of the B2 Audio 2 Way 6.5" REF SQ 61 with your vehicle, it is crucial to know the dimensions and installation spaces precisely. The speaker with a diameter of 6.5 inches requires appropriate mounting openings. If you are unsure, it is advisable to consult your vehicle's technical specifications or seek the advice of a professional. The speaker is compatible with a variety of vehicle models, provided the necessary space conditions are met. The simple installation facilitates the replacement and installation, as long as basic installation experience is available.

What installation tips are there for the B2 Audio 2 Way 6.5" REF SQ 61?

When installing the B2 Audio 2 Way 6.5" REF SQ 61, there are some technical details to consider. Ensure that the speakers are correctly aligned in the installation spaces to achieve maximum sound benefit. The placement of the tweeters should be at ear level whenever possible to ensure optimal sound dispersion. When connecting to the existing audio system, correct polarity is important to avoid phase errors. If in doubt, it may be helpful to consult a professional manual or seek assistance from a professional installer to avoid potential mistakes and perfect the installation.

How is the sound quality of the B2 Audio 2 Way 6.5" REF SQ 61 ensured?

The sound quality of the B2 Audio 2 Way 6.5" REF SQ 61 is secured by several technical features. The multi-layer carbon fiber voice coil of 35.5 mm supports precise reproduction of audio signals, while the high-density ferrite magnet provides powerful, clear tones. The use of ceramic for the tweeter dome adds additional richness of detail in the high-frequency range. The frequency response of the set from 50 Hz to 20 kHz allows for complete coverage of the acoustic spectrum, with a sensitivity of 87.6 dB ensuring impressive performance in any environment optimized for personal audio experience.

Manufacturer information / responsible person

B2 audio ApS
Jay Holm
Plantevej 35, 1 th.
2870 Dyssegaard
Denmark

Contact: info@b2audio.com

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