[Elecraft] The SP3 is *not* just for SSB speech reproduction

[Wayne Burdick]

The SP3 is reasonably flat from 100-20,000 Hz. It can reproduce somewhat lower pitches, too. It’s not a brick-wall function. A bit of EQ can be applied if the source provides it.

The SP3 is thus suitable for a wide range of material, including high-quality broadcast voice, ESSB, and even music, but not counting subsonic Earthquake mode, etc.

We did not design it to be used exclusively for narrowband voice.

73,
Wayne
N6KR