4 Inch (100 mm) Kevlar Cone, Midrange Speaker
This Oaktron driver provides excellent voice and midrange reproduction. Its treated Kevlar fiber cone resists modal break-up, leading to high intelligibility and natural vocals. The 93073 is an excellent choice for line arrays, due to its compact size, power handling, and high sensitivity -- all available for both indoor and outdoor applications.
- Midrange speaker
- 4" (100 mm) basket diameter
- 40 watts, 8 ohms, 92 dB SPL
- 1" copper voice coil, polyimide film former
- Ferrite magnet, stamped steel basket
- Kevlar fiber cone, pleated cloth surround
Oaktron by MISCO is a premium line of high performance, ready-to-ship raw speaker drivers for a wide variety of applications including high end home audio, arcade, and casino games, automotive, aerospace and many more. From elegantly simple to highly specialized designs for unique and demanding applications, there is an Oaktron loudspeaker perfectly suited for your needs.
MISCO engineers use the world's most sophisticated loudspeaker measurement systems including the Klippel Analyzer to maximize and validate the speaker's design, as well as the Klippel QC module to ensure perfect unit to unit consistency and reliability.
Download Product Specifications (PDF) »
| Brand Name | Oaktron by MISCO |
|---|---|
| Model # | 100-MR08-02 |
| Size, Nominal (inch & mm) | 4" (100 mm) |
| Shape of Speaker | Square |
| Speaker Type | Midrange |
| Application | Commercial, Pro Sound, Transit, Voice Communications |
| Environment | Outdoor / Indoor |
| RoHS Compliant | No |
| Nominal Impedance (Z) (Ω) | 8 |
| Rated Power IEC268-5 (W) | 40 Watts |
| Rated Impedance (Ω) | 8 |
| Continuous Power (W) | 40 |
| Program Power (W) | 80 |
| Frequency Range (Hz) | 100 - 8,500 |
| Sensitivity (dB SPL) ¹ | 92 |
| Resonant Frequency (Fs) (Hz) +/- 15% | 130 |
| DC Resistance (Re) (Ω) | 6.9 |
| Voice Coil Inductance (Le) (mH) | 0.35 |
| Mechanical Q Factor (Qms) | 7.64 |
| Electrical Q Factor (Qes) | 0.59 |
| Total Q Factor (Qts) | 0.55 |
| Mechanical Resistance (Rms) (kg/s) | 0.47 |
| Compliance Equivalent Volume (Vas) (L) | 2.03 |
| Suspension Compliance (Cms) (mm/N) | 0.34 |
| Surface Area of Diaphragm (Sd) (cm²) | 65.0 |
| Moving Mass (Mms) (gm) | 4.4 |
| Magnetic Gap Height (mm) | 6.0 |
| Coil Winding Height (mm) | 8.9 |
| Maximum Linear Excursion (Xmax) (mm) | 1.4 |
| Motor Force Factor (BL) (T•M) | 6.5 |
| Efficiency (η₀) (%) | 0.74 |
| Efficiency Bandwidth Product (EBP) (Fs/Qes) | 222.0 |
| Basket Type | Stamped steel, black powder coat finish |
| Terminal Size (mm) | 5.2 x 0.5 mm |
| Voice Coil Diameter (mm) | 25.8 |
| Voice Coil Wire Material | Copper |
| Voice Coil Former Material | Polyimide film |
| Voice Coil Winding | 2 layers, single voice coil |
| Magnet Material | Ferrite |
| Magnet Weight (g) | 341 |
| Cone Body Material | Treated kevlar fiber |
| Cone Surround Material | Treated pleated cloth |
| Dust Cap Material | Treated paper |
| Spider Material | Cloth |
| Net Weight (kg) | 0.93 |
| Technical Notes | ¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance |