Professional Audio Solutions Since 1949 4" Mil-Spec, Voice Communication Speaker
- MSRP$492.38
- Buy 1 - 9$328.25
- Buy 10+Request a Quote
The LS445/U is now available for customers looking for individual packaging. This ruggedized voice-range speaker was designed for TOUGH DUTY military communications.
- Die cast aluminum design
- NSN 5965-008-923665
- Built & tested; IAW MIL-DTL-12606
- Phenolic impregnated cone and dust cap
- Meta-aramid laminate, voice coil form
- Includes separate rubber gasket and steel front screen
Meeting and Exceeding MIL Specs, this speaker is designed to work in communication panels and can be surface or rear mounted. Its copolymer phenolic resins create an extremely stable and tough cone surface. A meta-aramid laminate form supports the voice coil. This rare laminate material is known to be one of the most heat resistant materials made today. A powder-coated aluminum basket is its frame. This combination of design elements can withstand the bumps and jumps of a combat tank and even the constant vibration of a C-5M Super Galaxy military transport in flight.
Download Product Specifications (PDF) »
| Brand Name | Oaktron by MISCO |
|---|---|
| Model # | LS445/U |
| Size, Nominal (inch & mm) | 4" (100 mm) |
| Shape of Speaker | Square |
| Speaker Type | Voice |
| Application | Military, Outdoor , Signal / Alarm Systems, Voice Communications |
| Environment | Outdoor / Indoor |
| RoHS Compliant | No |
| Nominal Impedance (Z) (Ω) | 8 |
| Rated Power IEC268-5 (W) | 2 Watts |
| Rated Impedance (Ω) | 8 |
| Program Power (W) | 2 |
| Frequency Range (Hz) | 300 - 7,000 |
| Sensitivity (dB SPL) ¹ | 91 |
| Resonant Frequency (Fs) (Hz) +/- 15% | 590 |
| DC Resistance (Re) (Ω) | 7.0 |
| Voice Coil Inductance (Le) (mH) | 0 |
| Total Q Factor (Qts) | 0.83 |
| Basket Type | Cast aluminum |
| Terminal Size (mm) | 0.152" x 0.025" |
| Voice Coil Diameter (mm) | 0.73" / 18.5mm |
| Voice Coil Wire Material | Copper |
| Voice Coil Former Material | Meta-aramid laminate |
| Voice Coil Winding | Single Layer |
| Magnet Material | Barium ferrite |
| Magnet Weight (g) | 156 |
| Cone Body Material | Cloth impregnated with phenolic resin |
| Cone Surround Material | Cloth impregnated with phenolic resin |
| Dust Cap Material | Cloth impregnated with phenolic resin |
| Spider Material | Cloth impregnated with phenolic resin |
| Net Weight (kg) | 0.56 |
| Technical Notes | ¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance |