The Yaesu SP-40 is a high-grade, professional external extension speaker engineered custom-tailored to seamlessly integrate with the cutting-edge Yaesu FT-710 SDR HF transceiver series. Designed as an integral mechanical and acoustic component, this side-mounting speaker allows operators to unlock and experience Yaesu’s proprietary AESS (Acoustic Enhanced Speaker System) technology. By pairing the internal audio generation of the transceiver with the specialized sound cavity of the SP-40, the system outputs a phase-coherent, high-fidelity 3D acoustic field that significantly improves voice intelligibility and weak-signal readability during critical communication operations.
Acoustic performance is tailored precisely to human voice frequencies while maintaining full coverage across a broad 250 Hz to 20,000 Hz response matrix. Equipped with a high-capacity Ø 77 mm dynamic driver with a nominal impedance of 4 ohms, the SP-40 comfortably handles a maximum input power of 12 Watts. This capability ensures clean, distortion-free audio peaks even when operating in high-noise base environments like emergency dispatch trailers, field command hubs, or active industrial workshops. Its premium acoustic design helps reduce operator listening fatigue during extended monitor shifts, making it a critical asset for commercial and defense communication networks.
Constructed with an ultra-rugged, RF-shielded metal housing finished in a matte black coat, the SP-40 matches the structural aesthetics and height of the FT-710 transceiver precisely. To provide maximum layout flexibility on space-constrained benches, its versatile mechanical design allows it to be bolted securely to either the left or right side of the radio transceiver chassis. Any unused mounting holes remaining on the cabinet are concealed with the provided clean-fit protective caps to prevent dust accumulation. Ready for immediate plug-and-play installation, the unit comes equipped with a pre-wired 32 cm connection cable terminated with a standard 3.5 mm mono connector plug.
Key Features
- AESS Technology Ready: Co-engineered to complement the internal speaker of the Yaesu FT-710, creating a combined, premium acoustic enhancement matrix.
- Dual-Side Modular Mounting: Flexible chassis construction allows secure mechanical attachment to either the left or right side of the transceiver casing.
- 12W High-Power Threshold: Premium Ø 77 mm internal speaker driver handles up to 12 Watts of maximum power to cut through noisy environments.
- Professional Metal Enclosure: Heavy-duty, RF-isolated metal cabinet weights 814 g to minimize structural resonance and match the radio profile perfectly.
- Broad Frequency Reproduction: Optimizes audio outputs from 250 Hz up to 20,000 Hz, increasing voice definition while filtering harsh high-frequency static hiss.
- Integrated Dust Protection: Includes sleek protective screw-hole caps to preserve look and seal internal acoustics from airborne debris.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Yaesu |
| Model Designation | SP-40 |
| Product Type | AESS Acoustic Extension Side-Speaker |
| Target Radio Compatibility | Yaesu FT-710 Series HF Transceivers |
| Speaker Driver Diameter | Ø 77 mm |
| Maximum Input Power | 12 W |
| Nominal Impedance | 4 Ohms |
| Frequency Response Range | 250 Hz – 20,000 Hz |
| Chassis / Housing Material | Durable, Die-cast Structured Metal (Black) |
| Audio Interface Connector | 3.5 mm Mono Jack Plug |
| Integrated Cable Length | Approx. 32 cm |
| Cabinet Dimensions (WxHxD) | 80 × 80 × 246 mm |
| Net Weight | 814 g |
Package Content
- 1x Yaesu SP-40 External Acoustic Enhanced Speaker
- 1x Integrated 32cm Mono Audio Interconnect Cable
- 1x Set of Protective Hole Blanking Caps & Side-Mounting Hardware
