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Steg

QK3

3" (8cm) midrange driver

359,00€
359,00€ 359,00€
incl. VAT , possibly plus shipping

Stock options

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Highlights

  • Power max. 80 watts, impedance 4 ohms, resonance frequency 130Hz.
  • Neodymium magnet, paper membrane, cast aluminum basket, drilled pole core.
  • Installation diameter 74mm, installation depth 43mm, diameter 93mm.
Seen more cheaply Personal Offer
brand: Steg
Delivery time:
Available, in 2-5 days with you
Number:
Couple
Watt RMS:
30
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359,00€ 359,00€

The QK3 3" (8cm) midrange drivers from Steg are high-end technology for audiophile connoisseurs. With their powerful neodymium magnet, they set the super lightweight paper diaphragm in motion and deliver a unique sound. They are not only technically up to date – their features, including a ventilated aluminum die-cast basket and a drilled pole core, set standards. Due to their handy 3" size and the included aluminum rings and grille, they are also easy to install. With an impedance of 4 ohms and a maximum power of 80 watts, the QK3 from Steg meets the highest demands for sound performance.

properties

  • 3" midrange driver with damped paper diaphragm
  • Impedance: 4 Ohm
  • RMS power 30 watts
  • Power Max 80 Watts
  • Resonance frequency Fs: 130Hz
  • Total quality Qts 0.696
  • Equivalence volume Vas: 0.623L
  • Membrane mass Mms: 3.317g
  • Ventilated aluminum cast basket, drilled polkern, neodymium magnet
  • Outer diameter: 93 mm
  • Installation diameter: 74 mm
  • Installation depth: 43 mm
  • Circle diameter LK: 4x 86 mm
  • Incl. Aluring in black (diameter 100mm) and grid
The QK3 midrange drivers from Steg feature a 3" damped paper diaphragm that ensures a particularly balanced sound. They have an impedance of 4 ohms and a maximum power of 80 watts. Technologically advanced, the ventilated aluminum die-cast basket and the drilled pole core set standards in sound reproduction. The powerful neodymium magnet drives the diaphragm with impressive efficiency. With a resonance frequency of 130 Hz and a total quality factor Qts of 0.696, audiophile requirements are definitely met.
The QK3 midrange drivers have an outer diameter of 93 mm and a mounting diameter of 74 mm, with a mounting depth of 43 mm. These compact dimensions, along with a bolt circle of 86 mm, allow for easy integration into existing systems. Due to their size, the QK3s are perfect for vehicles with limited installation space. The included aluminum rings with a diameter of 100 mm and the grille simplify installation and complement the aesthetic aspects of the installation environment.
The neodymium magnet of the QK3 midrange driver from Steg is known for its high field strength at low mass, resulting in a strong and precise driving force for the paper diaphragm. This positively influences the dynamics and detail fidelity of the reproduced sound. Compared to conventional magnets, the neodymium magnet allows for a more compact design, making installation in tighter spaces easier. The efficiency and clarity it provides to this midrange driver are particularly advantageous at high volume.
The sound characteristics of the QK3 midrange drivers are primarily determined by the resonance frequency of 130 Hz and the total quality factor Qts of 0.696, which together enable precise bass reproduction. Additionally, the equivalent volume Vas of 0.623L influences the flexibility in tuning for different enclosure types. The diaphragm mass Mms is 3.317g, which affects the response speed of the diaphragm and contributes to clear sound reproduction. These parameters define the foundation for the superior audio performance of the QK3.
The QK3 midrange drivers from Steg use a paper-damped diaphragm, chosen for its light weight and good damping properties. The aluminum die-cast basket provides strength and torsional rigidity, while its ventilation openings support heat dissipation. The drilled pole core helps reduce air compression effects and ensures linear diaphragm movement. Overall, these material choices reflect the need for a lightweight yet stable construction that delivers a natural and accurate sound image.
For optimal performance, the QK3 midrange drivers require an amplification that can deliver their RMS power of 30 watts per channel, ideally with an impedance of 4 ohms. The maximum power stores peak signals up to 80 watts, which is useful for dynamic music. Therefore, an amplifier should be configured for a power output within these parameters to avoid overload and ensure sound quality. Make sure that the amplifier covers the full bandwidth to maximize the performance of the QK3 midrange drivers.
The included aluminum rings with a diameter of 100 mm facilitate the adjustment and secure mounting of the QK3 midrange drivers in various vehicles and enclosures. They provide more flexibility during installation by allowing slight adjustments to already existing openings. This increases compatibility without compromising the structural integrity of the installation site. The rings act as stabilizers and protect the speakers from vibrations that can occur in vehicles due to the nature of road surfaces. This optimizes the audio experience.
The ventilated aluminum die-cast basket of the QK3 speaker helps to ensure the stability of sound reproduction through heat dissipation, even during prolonged operation. This structure reduces thermal compression effects that could impair sound dynamics. The aluminum casting additionally provides structural strength, preventing the speaker from deforming under load, which extends the lifespan of the speaker. Furthermore, the ventilation offers controlled airflow around the voice coil, supporting cool performance.
When installing the QK3 in a car audio system, attention should first be paid to the adaptation to the installation diameter of 74 mm and the installation depth of 43 mm. These features, combined with the bolt circle of 4x 86 mm, determine compatibility with the existing infrastructure in the vehicle. Note that the included aluminum rings can help make adjustments if the vehicle cutouts have a slightly different measurement configuration. These adjustments optimize acoustic performance as they minimize vibrations and maximize speaker efficiency.
The drilled pole core in the QK3 speakers plays an essential role in improving ventilation and heat dissipation across the voice coil. The drilling reduces a significant portion of the heat generated during operation, contributing to an increase in thermal resilience. This property minimizes distortions that could occur under thermal overload and ensures the performance of the speakers even at sustained high levels.

fortissimo
Dietmar Carle
Bahnhofstr. 23
88048 Friedrichshafen Kluftern
Germany

Contact: didi@fortissimo.de

Product Specifications

Manufacturer

Steg

Product type

3" (8cm) midrange driver

Features

  • Highlights

    • Power max. 80 watts, impedance 4 ohms, resonance frequency 130Hz.
    • Neodymium magnet, paper membrane, cast aluminum basket, drilled pole core.
    • Installation diameter 74mm, installation depth 43mm, diameter 93mm.

  • Uvp

    359

weight

0.2 kg

Watt RMS Load Capacity

30

configurators

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Your advantages with Masori

Buy Steg QK3 3 midrange speaker online and benefit

The Steg QK3 3 midrange drivers offer revolutionary sonic richness thanks to their innovative design and sophisticated engineering. The combination of a powerful neodymium magnet and a super-lightweight paper cone delivers an impressively dynamic sound. With a maximum power of 80 watts and an RMS output of 30 watts, these midrange drivers are a premium choice for detailed audio experiences. When you purchase from masori.de, you also benefit from the lowest price guarantee, ensuring you get the best price.

Powerful performance of the Steg QK3 3 midrange drivers

The midrange drivers offer an impressive maximum power of 80 watts, which is remarkable for their size. This power output allows for clear, distortion-free sound even at higher volumes. The RMS power rating of 30 watts ensures that these midrange drivers perform excellently in a wide variety of audio setups without sacrificing quality. A higher RMS rating could indicate greater power handling, while a lower power rating would ensure better efficiency at low volumes.

Impedance and its meaning: 4 ohms at the bridge QK3

The 4 ohm impedance of the Steg QK3 3 midrange drivers is a common standard in the car hi-fi market, offering an ideal balance between performance and efficiency. A lower impedance would potentially draw more power from the amplifier, while a higher impedance tends to reduce power consumption but also the power received. In practice, this means that the midrange drivers can operate efficiently without overloading amplifiers or other components.

Resonance frequency (Fs): 130Hz for clear midrange

The midrange driver's resonance frequency of 130 Hz marks the frequency range in which the speaker operates most efficiently. Values ​​in this range are excellent for midrange drivers, as they support their ability to integrate harmoniously into a system by reproducing midrange frequencies clearly and accurately. A higher resonance frequency may impair low-frequency detail, while a lower resonance frequency provides improved bass reproduction in larger speakers.

Total quality factor (Qts) of 0.696 for the Steg QK3 midrange drivers

With a total quality factor (Qts) of 0.696, the Steg QK3 3 midrange drivers offer a balanced response between mechanical and electrical tuning. A Qts value in this range is ideal for a wide sound dispersion with excellent efficiency, which is particularly beneficial for musical material that requires a lively midrange. A higher Qts value would mean a slower sound dispersion, while a lower Qts value would require a lower-tuned cabinet.

The equivalent volume Vas: 0.623L

The midrange drivers' equivalent volume (VaS) of 0.623L gives you an idea of ​​how stiff the suspension is compared to the air suspension of a bulky system. This value indicates that the midrange drivers perform best in smaller, closed or open enclosures. A larger VaS would indicate the need for more volume, while a smaller VaS would allow for a more compact enclosure design.

The impressive membrane mass Mms of 3.317g

The cone mass of the Steg QK3 3 midrange drivers is 3.317g. This value is ideal because it offers lightness for a quick response and rigidity for low distortion at higher volumes. While a lower mass could increase sensitivity, a higher mass could enable a more stable bass response. The balanced sound reproduction is always maintained and supports any style of music.

Ventilated aluminum cast basket construction of the Steg QK3

A vented cast aluminum basket on the Steg QK3 3 midrange drivers optimizes the heat dissipation and structural rigidity required to convert powerful sonic energy without compromising mechanical integrity. This design minimizes unwanted resonances and enables clearer sound reproduction even at higher volumes. Reduced ventilation could lead to excessive heat generation and possible sound coloration at any time.

Pole core drilling for temperature regulation during sound

The midrange driver's drilled pole piece ensures effective cooling of the coil, which is particularly beneficial during intensive audio performance. This feature not only maximizes service life but also improves sonic performance by preventing heat buildup. Without this drilling, temperatures could often rise significantly, which in turn would impair performance.

Optimized design and installation of the Steg QK3 midrange drivers

The Steg QK3 3 midrange drivers are precision-engineered with an outer diameter of 93 mm and a mounting diameter of 74 mm. Additional installation details, such as a mounting depth of 43 mm and the included aluminum rings and grilles, make installation both simple and versatile. These dimensions allow for flexible integration into various vehicle models, increasing the adaptability of the car hi-fi system.

Buy from Masori: Support for Steg QK3 midrange

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