The Yaesu SP-8 Loudspeaker is a versatile base speaker designed for amateur radio enthusiasts, offering advanced audio filtering capabilities. It features a 1/4 inch headphone jack and a 3.5 mm mini jack conveniently located on the front panel. Users can select between Input A or B using a push button switch, while a four-position MODE switch allows for Mute, Manual, SSB, and CW settings. Additionally, the speaker is equipped with a 3-position Low Cut Filter knob and a 4-position High Cut Filter knob, enabling precise audio adjustments to suit various listening preferences.

On the rear panel, the SP-8 includes Input Jack A and Jack B, along with a Line Out Jack, all utilizing RCA Phono connections. The package has one audio cable (RCA to 3.5mm mini), ensuring compatibility with various devices. The adjustable front feet allow users to angle the speaker for optimal sound projection. With a speaker size of 120 mm and an impedance of 8 ohms, the SP-8 delivers a power rating of 3 Watts, making it suitable for precise audio reproduction in various settings.

The filter circuit of the SP-8 is designed to enhance audio clarity, featuring low and high-cut filters that cater to different frequency ranges. The specifications indicate a low filter below 600 Hz and multiple high filters above 700 Hz, ensuring effective sound management for SSB and CW operations. With dimensions of 200 x 135 x 305 mm and a weight of 2.8 kg, the Yaesu SP-8 is a compact and lightweight option for those seeking quality audio performance in their radio setups.