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Dayton Audio SIG120-4 4” Signature Series Extended Range 40W Driver 4 Ohm

Dayton Audio
Part #295-650

Dayton Audio SIG120-4 4” Signature Series Extended Range 40W Driver 4 Ohm

Dayton Audio
Part #295-650  
Model: SIG120-4

The Dayton Audio Signature Series was designed to give speaker designers access to the pinnacle of speaker technology at the value expected from Dayton Audio. Featuring an open aluminum cast frame, anodized aluminum cone and a polyimide former, these drivers can provide extended range with incredibly low distortion. After hours of painstaking engineering and testing with meticulous attention to detail, we at Dayton Audio deem this driver line worthy of the endorsement of even the most critical audiophile.

Key Features
  • Extensive Klippel LMP and LSI testing to optimize Bl symmetry and parameters
  • Indexed cone/surround junction for smooth transition/frequency response
  • Polyimide formers and aluminum shorting sleeve for improved inductance, damping, and frequency response
  • One piece concave black anodized aluminum cone
  • Vented former and elevated spider for improved air flow
  • Open aluminum cast frame for improved heat dissipation
  • Countersunk stainless steel magnet badging for long time aesthetics
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Overview

Dayton Audio SIG120-4 4” Signature Series Extended Range 40W Driver 4 Ohm

Dayton Audio SIG120-4 4” Signature Series Extended Range 40W Driver 4 Ohm

The Dayton Audio Signature Series was designed to give speaker designers access to the pinnacle of speaker technology at the value expected from Dayton Audio. Featuring an open aluminum cast frame, anodized aluminum cone and a polyimide former, these drivers can provide extended range with incredibly low distortion.

Key Specs:

  • Nominal Diameter: 4"
  • Power Handling (RMS): 40 watts
  • Power Handling (MAX): 80 watts
  • Impedance: 4Ω
  • Frequency Response: 75 - 8,500 Hz
  • Sensitivity: 89.7dB @ 2.83V/1m
  • Voice Coil Diameter: 26.6mm
  • Maximum Linear Excursion: 4mm

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Signature Sound and Performance

The smooth and extended frequency response of these Dayton Audio speaker drivers ensures that the entire audible spectrum is accurately reproduced, from the lowest bass notes to the highest treble frequencies. This well-balanced frequency response delivers a natural and immersive listening experience, allowing you to hear every detail and nuance in your favorite music or movies.

Meticulous Attention to Detail

The speaker drivers' design, materials, and meticulous engineering work in harmony to minimize distortion, ensuring that the sound remains clean and clear even at high volumes. By achieving low distortion, these speaker drivers provide an accurate representation of the original audio signal, allowing audiophiles to enjoy a true-to-life listening experience with exceptional clarity and precision. The Signature Series speaker drivers used rigorous Klippel testing throughout the design process, a state-of-the-art analysis method to provide optimal performance, consistency, and reliability by precisely measuring and optimizing the drivers' magnetic and mechanical properties.

Featuring the innovative use of aluminum shorting sleeves, our speakers deliver unmatched audio performance. These Faraday rings, expertly situated around the driver's pole piece, not only stabilize the magnetic field but also significantly reduce inductive distortion. The result? Consistent, high-quality sound in every note. Thanks to aluminum's superior conductivity, every audio signal is transmitted efficiently and without distortion.

Indexed Cone and Surround Junction

Diffraction caused by the abrupt edge of the surround is minimized by the use of an indexed junction. This design feature helps create a smooth transition between the cone and surround, resulting in improved frequency response while improving the rigidity of the cone further resulting in less cone distortion at high excursion.

Vented Polyimide Former with CCA Voice Coil Wire and Elevated Spider Suspension

The polyimide voice coil formers provide excellent mechanical damping and a smoother frequency response, and the copper-clad aluminum (CCA) wire reduces moving mass further enhancing the overall sound quality and increasing the efficiency of the speaker driver. An elevated spider and vented former increases airflow to the coils to keep the assembly running cool during long periods of use.

Concave Black Anodized Aluminum Cone

The aluminum construction of the cone is lightweight, rigid, and helps reduce distortion, contributing to a more accurate sound reproduction. The anodization process is optimized to contribute to the dampening of the cone and provides high aesthetic value to any speaker design.

Open Aluminum Cast Frame and CNC'd Stainless-Steel Badging

The aluminum cast frame keeps movement isolated to the diaphragm, increasing low frequency performance and providing additional thermal dissipation. Stainless-steel badging completes the sleek aesthetic of the Signature Series drivers providing a timeless visual appeal for every speaker designer.

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Product Details

BrandDayton Audio
ModelSIG120-4
Part Number295-650
UPC848791009051
Unit of MeasureEach
Weight1.85

Product Specifications

Nominal Diameter4"
Bolt Circle Diameter4.33
Power Handling (RMS)40 Watts
Power Handling (MAX)80 Watts
Impedance4Ω
Frequency Response75-8500Hz
Sensitivity89.7dB 2.83V/1m
Voice Coil Diameter1"

Thiele-Small Parameters

Resonant Frequency (Fs)74.6Hz
DC Resistance (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)0.109ft³
Mechanical Compliance of Suspension (Cms)0.68mm/N
BL Product (BL)5T·m
Diaphragm Mass Inc. Airload (Mms)6.7g
Maximum Linear Excursion (Xmax)4mm
Surface Area of Cone (Sd)56.4cm²

Materials of Construction

Cone MaterialAluminum
Surround MaterialRubber
Voice Coil FormerKapton® / Polyimide
Basket / Frame MaterialCast Aluminum

Mounting Information

Overall Outside Diameter4.84"
Baffle Cutout Diameter3.74"
Depth2.33"
# Mounting Holes6

Parts Express Staff Recommended Enclosure Volume

Sealed Volume0.05ft³
Sealed F3130Hz
Vented Volume0.148ft³
Vented F368.9Hz

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