Yaesu SP-102 External Speaker

The Yaesu SP-102 is a high-fidelity audio transducer designed for amateur and general communications modes, broadcast listening, and music. It features manual frequency tailoring with independently adjustable low-cut and high-cut filters, offering twelve audio response configurations selectable from the front panel.

Filter Operation

The SP-102 allows operators to match audio response to listening conditions and modes using its filter controls. The low-cut filter has two positions plus 'NORM', and the high-cut filter has three positions plus 'NORM'.

AM, FM: For wideband modes, set both filters to 'NORM' for maximum bandwidth and fidelity. Adjust filters as needed to mitigate interference or noise.
SSB: For natural sounding SSB reception, set the LOW selector to 'NORM' and the HIGH selector to position 1. Adjustments may be beneficial under crowded band conditions or high noise levels.
CW: For narrow mode CW reception, set the LOW selector to position 2 and the HIGH selector to position 3. This creates a narrow audio response centered around 600-700 Hz, useful for receivers without narrow IF filters or for reducing internal receiver noise.

Specifications

Speaker Element:

Diameter: 120 mm
Power Rating: 3 watts
Impedance: 8 ohms
Frequency Range: 100-12000 Hz

General:

Case Dimensions (HWD): 129 x 200 x 306 mm
Weight: 2.2 kg

Filter Circuit Selections:

LOW 1: below 300 Hz (-6dB/octave)
LOW 2: below 600 Hz (-6dB/octave)
HIGH 1: above 2.4 kHz (-6dB/octave)
HIGH 2: above 1 kHz (-6dB/octave)
HIGH 3: above 700 Hz (-6dB/octave)

Additional Features

Dual line inputs with front panel selection.
Headphone output jack on the front panel, allowing use of frequency tailoring with headphones.

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