DAYTON AUDIO SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm

DAYTON AUDIO SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm
Dayton Audio's Design Series has been designed to give loudspeaker designers access to high-quality drivers. Featuring a cast aluminum frame, an anodized aluminum cone and polyimide coating, they can deliver a wide range with incredibly low distortion.

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Shipping date: 30-04-2024.

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Dayton Audio SIG120-4

Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm

Dayton Audio SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm

Dayton Audio's Design Series has been designed to give loudspeaker designers access to high-quality drivers. Featuring a cast aluminum frame, an anodized aluminum cone and polyimide coating, they can deliver a wide range with incredibly low distortion.

Unique sound and performance

The smooth, extended frequency response of this Dayton Audio loudspeaker guarantees accurate reproduction of the entire audio spectrum, from the lowest notes to the highest frequencies. This well-balanced frequency response delivers a natural, immersive listening experience, allowing you to hear every detail and nuance of your favorite music or movies.

Dayton Audio SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm

Careful attention to detail

The speaker's design, materials and meticulous engineering work in harmony to minimize distortion, ensuring crisp, clear sound even at high volumes. By achieving low distortion, this speaker provides an accurate representation of the original audio signal, enabling audiophiles to enjoy a truer-to-nature listening experience, with exceptional clarity and precision. It is also subjected to rigorous Klippel testing throughout the design process, a state-of-the-art analysis method that achieves optimal performance, consistency and reliability by precisely measuring and optimizing the speaker's mechanical magnetic properties.

Thanks to the innovative use of an aluminum ring, this loudspeaker delivers unrivalled audio performance. This Faraday ring, precisely positioned around the speaker's pole piece, not only stabilizes the magnetic field, but also significantly reduces distortion for perfectly coherent sound.

Dayton Audio SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm
Dayton Audio SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm

Perfectly adjusted suspension

Diffraction caused by the abrupt edge of the suspension is minimized by the use of an indexed junction. This feature creates a smooth transition between diaphragm and suspension, which improves frequency response, while enhancing diaphragm rigidity, thus reducing distortion at high excursion.

Dayton Audio SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm

Controlled design

Copper-clad aluminum wire (CCA) reduces moving mass, improving overall sound quality and driver efficiency. A raised spider and vented design increase airflow to the voice coil, keeping the whole unit cool during long periods of use.

Concave diaphragm in anodized aluminum

The aluminum construction of the diaphragm is light, rigid and reduces distortion, contributing to more accurate sound reproduction. The anodization processus is optimized to contribute to diaphragm damping, while giving the loudspeaker a modern aesthetic.

Dayton Audio SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm
Dayton Audio SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm

Aluminum cast frame

The cast aluminum frame isolates diaphragm movement, enhancing low-frequency performance and providing additional heat dissipation. The stainless steel badge completes the speaker's sleek aesthetic.

Dayton Audio SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm

Technical characteristics

Specifications
Speaker driver typeWoofer
Midbass
Nominal diameterØ101.6mm (4")
Power handlingRMS : 40W
Max : 80W
Impedance4Ω
Frequency response75Hz - 8500Hz
Sensitivity89.7dB @ 2.83V/1m
Voice coil diameterØ25.4mm (1")
Weight0.84kg
Total outer dimensionsØ123*59mm
Magnet weight-
Thiele-Small Parameters
Resonant Frequency (fS)74.6Hz
DC Ressitance (RE)3.7Ω
Voice coil inductance (LE)0.22mH
Mechanical Q (QMS)4.84
Electromagnetic Q (QES)0.47
Total Q (QTS)0.43
Compliance equivalent volume (VAS)3.08L (0.109ft³)
Mechanical compliance of suspensions(CMS)0.68mm/N
Force factor (B·l)5T·m
Mechanical resistance RMS)-
Moving mass + airload (MMS)6.7g
Moving mass (MMD)-
Max linear excursion (XMAX)4mm
Volume of air displaced at Xmax (VD)-
Efficiency (η₀)-
Bandwidth efficiency (EBP)-
Surface area of cone (SD)56.4cm²
Materials
ConeAluminum
SurroundRubber
Voice coil wire-
Voice coil formerKapton® / Polyimide
FrameCast aluminum
Magnet-
Mounting informations
Outer diameterØ122.9mm (4.84")
Cutout diameterØ95mm (3.74")
Depth59.2mm (2.33")
Bolt circle diameter-
Number of mounting holes6
Optimum cabinet size
Sealed volume1.42L (0.05ft³)
Sealed F3130Hz
Vented volume4.2L (0.148ft³)
Vented F368.9Hz
 
Data sheet
Speaker Power (W RMS)40.0
Speaker TypeWoofer
Speaker TypeMidbass
Impedance (Ω)4
Loudspeaker diameter (mm)102.0
Diaphragm typeAluminium
Efficiency / Sensitivity (dB)91.0
Max Linear Excursion (Xmax) (mm)4.0
Lowest frequency (Hz)75
Highest frequency (Hz)75
 
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DAYTON AUDIO SIG120-4 Speaker Driver Woofer/ Midbass Aluminum 40W 4Ω 91dB 75Hz-8500Hz Ø10.2cm
Dayton Audio's Design Series has been designed to give loudspeaker designers access to high-quality drivers. Featuring a cast aluminum frame,...

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