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  5. Signature SIG120-4
Dayton Audio Signature SIG120-4 4" (10cm) Mid-Woofer
SKU:  SIG120-4

1 Review

40 Watt

Signature SIG120-4

SKU:  SIG120-4

1 Review

Technical Highlights

  • 40 watts RMS, 80 watts Max, frequency response of 75-8,500 Hz.
  • Impedance of 4 ohms, sensitivity of 89.7 dB, coil 26.6 mm.
  • Cast aluminum frame, black anodized diaphragm, polyimide former.
  • More technical details
€34,00
€34,00 €34,00
5% discount with credit card
inkl. VAT , possibly plus shipping
Delivery
Jun 5, - Jun 8,
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Signature SIG120-4 by Dayton Audio Description

Signature SIG120-4 is a 4-inch (10 cm) midrange driver from Dayton Audio with 4 Ohm. The driver of the Signature Series features an open aluminum die-cast frame, a one-piece concave, black anodized aluminum diaphragm, and a polyimide former with aluminum sleeve. A ventilated voice coil and a raised spider support airflow. A recessed stainless steel magnet cover is integrated. The cone/surround transition is indexed. Detailed Klippel LMP and LSI tests for optimizing BL symmetry and parameters are the basis. Technical specifications include 40 Watts RMS, 80 Watts Max, a frequency response of 75 to 8,500 Hz, 89.7 dB at 2.83 V/1 m, 26.6 mm voice coil diameter, and 4 mm maximum linear excursion.

Features
  • 4-inch (10 cm) midrange driver
  • 4 Ohm impedance
  • Open aluminum die-cast frame
  • One-piece concave, black anodized aluminum diaphragm
  • Polyimide former and aluminum sleeve
  • Ventilated voice coil
  • Raised spider
  • Indexed cone/surround transition
  • Recessed stainless steel magnet cover
  • Detailed Klippel LMP and LSI tests
  • Extended range
Technical Specifications
  • Nominal diameter: 101.6 mm
  • Power handling RMS: 40 Watts
  • Power handling Max: 80 Watts
  • Impedance: 4 Ohm
  • Frequency response: 75 to 8,500 Hz
  • Sensitivity: 89.7 dB at 2.83 V/1 m
  • Voice coil diameter: 26.6 mm
  • Maximum linear excursion: 4 mm

Dayton Audio Signature SIG120-4 Datasheet

Open datasheet

Frequently Asked Questions about Signature SIG120-4

How do the Klippel LMP and LSI tests affect the Bl-symmetry and parameters of the Signature SIG120-4?

The Klippel LMP and LSI tests enable a precise analysis of the mechanical and electrical parameters of the Signature SIG120-4. Through these tests, the Bl-symmetry can be optimized, leading to a more uniform sound radiation and reduced distortions. Additionally, the magnetic and acoustic properties are measured in detail, allowing parameters such as inductance and damping to be fine-tuned. This results in improved overall performance and a more accurate frequency response that meets the high demands of audiophiles.

What advantages do the polyimide formers and aluminum sleeve in the Signature SIG120-4 offer regarding inductance and damping?

The polyimide formers in the Signature SIG120-4 significantly contribute to the reduction of inductance, enabling more efficient movement of the voice coil. This improves the speaker's response speed and minimizes distortions. The aluminum sleeve serves for effective heat dissipation, thereby increasing damping and ensuring the thermal stability of the speaker. Together, these components optimize the frequency response and overall performance by ensuring more precise control of the diaphragm movement and consistent power delivery.

How does the ventilated coil body and the raised spider contribute to the performance of the Signature SIG120-4?

The ventilated coil body in the Signature SIG120-4 ensures efficient cooling of the voice coil, preventing overheating and ensuring longer durability under high power inputs. The raised spider allows for improved airflow around the diaphragm, leading to more precise control of the vibrational movements. This combination increases linear excursion and minimizes distortions, resulting in the speaker providing higher sound quality and an extended dynamic range. This is particularly important for discerning audiophiles who expect detailed and distortion-free playback.

What characteristics does the anodized aluminum diaphragm of the Signature SIG120-4 have, and how does it affect the frequency response?

The one-piece concave, black anodized aluminum diaphragm of the Signature SIG120-4 offers high stiffness and low resonance, enabling precise and undistorted sound reproduction. The anodization protects the diaphragm from oxidation and enhances structural integrity, increasing the speaker's longevity. This material choice optimizes the frequency response, particularly in the midrange, resulting in clearer and more detailed sound reproduction. This helps ensure that both low and high frequencies are reproduced with high accuracy.

How does the open aluminum die-cast frame optimize heat dissipation in the Signature SIG120-4?

The open aluminum die-cast frame of the Signature SIG120-4 significantly improves heat dissipation by providing a larger surface area for heat exchange. Aluminum has high thermal conductivity, which efficiently dissipates heat from the voice coil and electrical components, more effectively than many other materials. This prevents overheating during intense use and supports stable performance output. The improved cooling contributes to the speaker's longevity and ensures that sound quality remains consistent even at high power levels.

How does the maximum linear excursion of 4 mm affect the sound reproduction of the Signature SIG120-4?

The maximum linear excursion of 4 mm in the Signature SIG120-4 allows for greater movement of the diaphragm without distortion, which is particularly beneficial at high volumes and low frequencies. This excursion increases the dynamics of the speaker and allows for more precise reproduction of transient signals and bass-heavy content. A greater linear excursion also helps reduce distortion and ensures that sound reproduction remains clean and detailed, even in demanding audio applications.

What technical requirements are necessary for the installation of the Signature SIG120-4 regarding dimensions?

The Signature SIG120-4 has a nominal diameter of 4 inches, which requires precise planning of the installation space in DIY speaker design. The depth of the speaker and the dimensions of the open aluminum die-cast frame must be considered to ensure optimal placement and integration into the enclosure. It is important that the installation space is adequately ventilated to fully utilize the improved heat dissipation features. Accurate measurement of the available space and adjustment of the enclosure design are necessary to ensure that the speaker operates efficiently and delivers the best possible sound quality.

How does the sensitivity of 89.7 dB of the Signature SIG120-4 affect the volume effect with different amplifiers?

With a sensitivity of 89.7 dB at 2.83V and 1 meter, the Signature SIG120-4 is relatively efficient, meaning it works well with a variety of amplifiers. At higher sensitivity values, the speaker can become louder without requiring excessive amplifier power. This allows for flexibility in use with both passive and active amplifiers, ensuring that the speaker delivers clear and powerful sound reproduction, even with lower power amplifiers. Thus, the optimal sensitivity contributes to versatile usage and broad compatibility with different audio setups.

What frequency ranges does the Signature SIG120-4 cover and how does it suit different music genres?

The Signature SIG120-4 covers a frequency range from 75 Hz to 8,500 Hz, making it versatile for various music genres. The low cutoff frequency of 75 Hz allows for solid reproduction of bass elements, while the high upper limit of 8,500 Hz provides detailed representation of highs and mids. This makes the speaker ideal for music styles that require both strong bass lines and clear, precise highs, such as rock, pop, jazz, and electronic music. The wide frequency coverage ensures that the Signature SIG120-4 delivers a balanced sound reproduction that offers both depth and clarity.

How does the recessed stainless steel magnet cover ensure the aesthetics and functionality of the Signature SIG120-4?

The recessed stainless steel magnet cover on the Signature SIG120-4 combines aesthetic elegance with practical functionality. Stainless steel provides a robust and durable surface that also gives a modern and sophisticated look. By recessing the magnetic circuit, seamless integration into the enclosure is achieved, which not only enhances the appearance but also optimizes the magnetic field distribution. This reduces unwanted resonances and interferences that could affect sound quality. Additionally, the stainless steel cover protects the magnet from physical influences, ensuring long-term performance of the speaker.

Manufacturer information / responsible person

Audio Components BV
Koen Pronk, Martijn Ouwerkerk
Peizerweg 97a
9727AJ Groningen
Netherlands


Contact: info@audio-components.com