3. Single Subwoofer SQ
  5. SPK 8

SPK 8

300 Watt

SPK 8

Technical Highlights

  • Power 350 Watts RMS, impedance switchable 2 Ohm or 4 Ohm.
  • Resonant frequency 60.37 Hz, frequency response from 30 to 500 Hz.
  • Voice coil diameter 50.8 mm, Xmax 8.5 mm.
  • More technical details
€187.50
-25% €249.00 €187.50
2% discount with credit card

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ProductSPK 8 · S2 (2x2 Ohm)

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Impedance: S2 (2x2 Ohm)
Estimated delivery: Sep 21–Sep 24.
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1 year extra warranty

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datasheet
Black HydraHGS-2521
The Black Hydra HGS-2521 is a black 10 Zoll subwoofer with a round cone and Aluminium-Gusskorb, shown at an angle on a white background.
Seas-Extreme L22ROY2 - XM011-8-8" (20cm) Subwoofer-masori-kaufen
SeasExtreme L22ROY2 - XM011-8
Audiocontrol-SPK 8-8" (20cm) Subwoofer-masori-kaufen
€187.50
€249.00 €187.50

More power than SPK 8 here!

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The SPK 8 is an impressive 8" (20cm) subwoofer from Audiocontrol. With a design that offers high excursion for ultra-deep bass, a fiber matrix paper cone with mica coating, and a 3-layer high-temperature voice coil former, this subwoofer stands out. Additionally, it features a dual damping system for linear bass reproduction and a dual dust cap system to control cabinet compression. Furthermore, it includes an efficient high-performance motor design and the ability to remove the subwoofer grille. All these features make the SPK 8 a remarkable piece of audio quality and control.

Features

  • 8" (20cm) Subwoofer
  • Design with high excursion for ultra-deep bass
  • Fiber matrix paper cone with mica coating
  • 3-layer high-temperature coil carrier
  • Dual damping system for linear bass reproduction
  • Double dust cap system for controlling housing compression
  • Efficient High-Performance Engine Design
  • Removable subwoofer grille included in delivery

Technical Data

  • Load capacity RMS 300 Watts
  • Load capacity MAX 600 Watts
  • Nominal impedance (Z) 2 Ohm / 4 Ohm
  • Direct current resistance (Re) ]] 3.2 Ohm
  • Resonant frequency (Fs) 60.3665 Hz
  • Piston area (Sd) 0.0194 m2
  • Power factor (BL) 11.3310 T.m
  • Mechanical Q-factor (Qms) 5.4933
  • Electrical Q-factor (Qes) 0.8733
  • Total Q-Factor (Qts) 0.7535
  • Sensitivity 1W/M (SPL) 81.9876
  • Mechanical Comp (Cms) 0.0752 mm/N
  • Moving mass (Mms) 92.3784 g
  • Linear displacement (Xmax) . 8.5 mm
  • Acoustic Volume Comp (Vas) 3.9378 L
  • Reference Efficiency (NO.) 0.0952%
  • RMS power (Pe) 350 watts
  • Frequency response 30-500 Hz
  • Winding coil diameter 50.8 mm
  • Displacement 1.44Ltr

Dimensions

  • Overall dimensions: 214 mm 
  • Cutout diameter: 184 mm
  • Installation depth: 109 mm
  • Mounting height (without grid): 14 mm
  • Mounting height (with grid): 30 mm
  • Motor diameter (with cover): 141 mm

Bass reflex enclosure recommendation

  • External dimensions: 584mm W × 292mm H × 304mm D
  • Internal net volume: 25.2L
  • Internal total volume: 34.54L
  • External gross volume: 52.1L
  • Material thickness: 21mm
  • Sampling frequency: 40 Hz
  • Port dimensions: 44.5mm × 254mm 
  • Length of the connection: 711mm
  • F3 (Hz): 34

Closed housing

  • External dimensions: 368mm W × 254mm H × 254mm D
  • Internal net volume: 13.8L
  • Internal total volume: 15.29L
  • External gross volume: 23.7L
  • Material thickness: 21mm
  • F3 (Hz): 69.04
  • Qtc: 0.86

*Enclosure size recommendations do not include driver and/or connection displacement.

datasheet

Open data sheet

Frequently Asked Questions about SPK 8

What power does the Audiocontrol SPK 8 Subwoofer provide?

The Audiocontrol SPK 8 Subwoofer delivers an RMS power of 300 watts and a peak power handling of 600 watts. With a resonance frequency of 60.3665 Hz and a frequency range of 30 to 500 Hz, it offers a wide frequency response for versatile audio playback. Its sensitivity is at 81.9876 dB, ensuring efficient conversion of electrical signal into acoustic energy. The force factor (BL) of 11.3310 T.m provides precise control of the cone, while the reference efficiency is at 0.0952%, indicating an energetically balanced operation of the subwoofer.

What is the design of the Audiocontrol SPK 8 Subwoofer like?

The design of the Audiocontrol SPK 8 Subwoofer is intended for high excursion and ultra-deep bass. The 8" (20cm) Subwoofer features a fiber matrix paper cone with a mica coating, which enhances structural integrity and sound clarity. The 3-layer high-temperature voice coil design allows for efficient heat management and high operational reliability. A dual damping system ensures linear bass reproduction, while the double dust cap system controls cabinet compression and provides improved stability to the subwoofer. Additionally, an efficient high-performance motor design increases overall power.

What are the dimensions of the Audiocontrol SPK 8?

The overall dimensions of the Audiocontrol SPK 8 Subwoofer are 214 mm in diameter. The cutout diameter is 184 mm, while the installation depth is 109 mm. The mounting height varies depending on whether a grille is used: without grille, it measures 14 mm, with grille 30 mm. The motor diameter including cover is 141 mm. These dimensions should be considered when integrating into your existing audio system to ensure optimal fit and functionality.

How do the Thiele/Small parameters affect the performance of the Audiocontrol SPK 8?

The Thiele/Small parameters of the Audiocontrol SPK 8 play a crucial role in its overall performance. The mechanical Q factor (Qms) is 5.4933 and the electrical Q factor (Qes) is 0.8733, resulting in a total Q factor (Qts) of 0.7535. These parameters influence the resonance frequency and the efficiency of the bass reflex system. With a cone area (Sd) of 0.0194 m² and a moving mass (Mms) of 92.3784 g, the Subwoofer achieves precise and dynamic bass reproduction. The mechanical compliance (Cms) of 0.0752 mm/N supports smooth cone movement.

What enclosure recommendations are there for the Audiocontrol SPK 8?

Different types of enclosures are recommended for the Audiocontrol SPK 8. In the bass reflex enclosure, the external gross volume is 52.1 L with a tuning frequency of 40 Hz and port dimensions of 44.5 mm x 254 mm. The net volume in the closed enclosure is 13.8 L with an F3 of 69.04 Hz and a Qtc value of 0.86, allowing for tight bass reproduction. The material thickness of the enclosures is 21 mm each to provide sufficient stability. The enclosure sizes do not account for driver and/or connection offsets, so these factors should be considered during individual customization.

Are there any guidelines for the placement and installation of the Audiocontrol SPK 8?

When installing the Audiocontrol SPK 8, considering the dimensions is crucial. With a cutout diameter of 184 mm and a mounting depth of 109 mm, you should ensure that the existing enclosure provides enough space. The varying mounting height from 14 mm to 30 mm allows flexibility in placement, whether with or without the removable Subwoofer grille. Also, pay attention to the wiring to optimally connect the Subwoofer. Especially in cars, available space can vary, so plan for accurate measurement of the intended installation location.

How does the dual damping system affect the Audiocontrol SPK 8?

The dual damping system of the Audiocontrol SPK 8 enables linear bass reproduction by minimizing unwanted enclosure vibrations. This technology combines two damping elements that work together to ensure stable cone movements and reduce interference. Through this optimized control, you receive precise bass waves that are clear and powerful. The improved linear excursion of 8.5 mm supports the integrity of the low-frequency output, while the dual dust cap system regulates compression, ensuring a clean and clear sound stage.

What material is used for the cone in the Audiocontrol SPK 8?

The Audiocontrol SPK 8 uses a fiber matrix paper cone with a mica coating. This combination of materials ensures high durability and torsional stiffness, which directly affects sound quality. The mica addition enhances the structure, reducing unwanted resonances and creating clearer sound images. The lightweight construction also allows for a dynamic and precise response, which is important for reproducing deep, powerful bass. The processing of these materials significantly contributes to overall performance by ensuring acoustic precision and robustness.

What impedance values are available for the Audiocontrol SPK 8?

The Audiocontrol SPK 8 Subwoofer offers two impedance options: 2 Ohm and 4 Ohm. These nominal impedances affect the matching to amplifiers and influence the overall efficiency of the system. The DC resistance (Re) is 3.2 Ohm, which is important for calculating electrical parameters and integrating into existing audio systems. This flexibility in impedance values allows the subwoofer to be effectively used in various configuration-dependent scenarios to optimize the appropriate power output depending on the amplifier model, thus achieving optimal sound.

What is special about the high-performance motor design of the Audiocontrol SPK 8?

The high-performance motor design of the Audiocontrol SPK 8 Subwoofer is designed to provide maximum power and efficiency. This design allows for increased magnetic flux density, positively affecting the driving force and control of the cone. With a force factor (BL) of 11.3310 T.m, it enhances reactivity and ensures precise bass reproduction even at high volumes. This efficient system is ideal for users who value finely tuned low-frequency reproduction without compromising sound precision at high power levels.

Manufacturer information/responsible person

SONOAUTO AB
Brodalsvägen 1B
433 38 Partille
Sweden
+46 (0) 31 44 44 12

info@sonoauto.se

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