DAYTON AUDIO SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm

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: 22-11-2024.

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2 Years warranty
 
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Dayton Audio SIG225-4

Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm

Dayton Audio SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm

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 SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm

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 SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm

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 SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm

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 SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm
Dayton Audio SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm

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 SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm

Technical characteristics

Specifications
Speaker driver typeWoofer
Midbass
Nominal diameterØ203.2mm (8")
Output powerRMS : 100W
Max : 200W
Impedance4Ω
Frequency response40Hz - 3000Hz
Sensitivity91.24dB @ 2.83V/1m
Voice coil diameterØ50.8mm (2")
Weight2.63kg
Total outer dimensionsØ224.8*107.5mm
Magnet weight-
Thiele-Small parameters
Resonant Frequency (fS)39.94Hz
DC resistance (RE)3.89Ω
Voice coil inductance (LE)0.29mH
Mechanical Q (QMS)8.87
Electromagnetic Q (QES)0.45
Total Q (QTS)0.43
Compliance Equivalent Volume (VAS)29.45L (1.04ft³)
Mechanical Compliance of Suspension (CMS)0.43mm/N
Force factor(B·l)8.95T·m
Mechanical resistance (RMS)-
Moving mass + airload (MMS)36.93g
Moving mass (MMD)-
Max linear excursion (XMAX)6mm
Volume of air displaced at Xmax (VD)-
Efficiency (η₀)-
Bandwidth efficiency (EBP)-
Surface area of cone (SD)226.9cm²
Materials
ConeAluminum
SurroundRubber
Voice coil wireCopper
Voice coil formerKapton® / Polyimide
FrameSteel
MagnetCeramic ferrite
Mounting informations
Outer diameterØ224.8mm (8.85")
Cutout diameterØ190mm (7.48")
Depth101.6mm (4")
Bolt circle diameter-
Number of mounting holes6
 
Data sheet
Speaker Power (W RMS)100.0
Speaker TypeWoofer
Speaker TypeMidbass
Impedance (Ω)4
Loudspeaker diameter (mm)203.0
Diaphragm typeAluminium
Efficiency / Sensitivity (dB)91.0
Max Linear Excursion (Xmax) (mm)6.0
Lowest frequency (Hz)40
Highest frequency (Hz)3000
 
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DAYTON AUDIO SIG225-4 Speaker Driver Woofer / Midbass Aluminum 100W 4Ω 91dB 40Hz-3000Hz Ø20.3cm
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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