Kenwood SP-23
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| Frequency | n/a (external communications speaker; audio 300 Hz - 5 kHz) |
| Bands | n/a (audio accessory) |
| Power | A passive external speaker - it takes audio from the radio's external-speaker jack. Rated about 1 W into 8 ohms. |
| Modes | External communications speaker (non-filtered) |
| Weight | 1.3 kg (2.9 lb) - About 1.3 kg. Compact cabinet, roughly 123 mm wide x 95 mm high x 235 mm deep. |
| audio in | Mono 1/8-inch (3.5 mm) TS plug from the radio's external-speaker jack |
| impedance | 8 ohms; rated about 1 W |
| power req | Passive (no power needed). Connects to the radio's external-speaker output. |
A neat, well-made matching speaker that gets the audio off the radio and faces it toward you, improving clarity over a top- or side-firing internal speaker. It pairs visually with many Kenwood rigs, is simple plug-in (mono 3.5 mm), and is compact on a crowded desk.
It is a basic non-filtered speaker - no tone controls, filters or DSP - with a modest 3-inch driver and a 1-watt rating, so it is about placement and clarity rather than big or shaped sound. Buyers wanting selectable audio filtering need the filtered SP-230 (or a DSP speaker), and the styling match is specific to Kenwood gear.
The Kenwood SP-23 is the compact, non-filtered external speaker that matches many Kenwood transceivers, bringing the audio forward for clearer copy. It suits Kenwood owners who simply want better-placed, cleaner sound and a styling match; those who want built-in audio filters step up to the SP-230, and those wanting active noise reduction choose a DSP speaker.
The Kenwood SP-23 is a compact external communications speaker made to match Kenwood transceivers. Many radios have their speaker firing from the top or the side, which sounds thin and indirect; a dedicated external speaker like this faces the operator from a small cabinet and makes received voices clearer and easier to copy over long sessions, while tidying the desk by getting the audio off the radio.
It is a straightforward, non-filtered speaker: a 3-inch (77 mm) driver, 8 ohms, with an audio response of 300 Hz to 5 kHz and a modest 1-watt rating - exactly the range that matters for voice intelligibility. There are no tone controls, filters or DSP; this is about better sound placement and clarity rather than shaping the audio. Connection is a simple mono 1/8-inch (3.5 mm) plug into the radio's external-speaker jack, and the cabinet is small at about 123 by 95 by 235 millimeters and 1.3 kilograms.
Its styling and size match the TS-450S, TS-690S and 570 series, and it works happily with a wide range of Kenwood radios including the TS-2000, TS-480, TS-570, TS-850, TS-450, TS-50 and TS-430. Operators who want built-in audio filtering choose Kenwood's filtered SP-230 instead, and those who want active noise reduction look to a DSP speaker.
It serves the same role for Kenwood radios that the Yaesu SP-101 does for the FTDX101; for active noise reduction rather than a plain speaker, see the West Mountain CLRspkr.