Q Acoustics 3030c bookshelf speaker, with a 142 mm C3 midbass driver and a sealed 22 mm tweeter. It reaches down to 48 Hz (-6 dB) and sits on a stand.

The 142 mm C3 midbass driver uses a single-piece curved cone profile. It combines the bass stiffness of a straight cone with the midrange control of a flared cone. Large magnets coupled to the voice coils give a lively response and limit harmonic distortion. The response extends from 48 Hz to 30 kHz (-6 dB).
The 22 mm tweeter is hermetically sealed and suspended clear of the baffle. Neither the internal cabinet pressure nor the neighbouring midbass driver makes it vibrate. Its chamber is vented to lower distortion, and the crossover hands it the signal from 2.5 kHz.
A Point to Point (P2P) brace supports the areas of the cabinet that need it. The very rigid structure limits bass resonances and sharpens the stereo image. The port opens at the rear, with a foam plug supplied for each speaker. The usable volume is 12.5 L and the sensitivity 86.5 dB (2.83 V, 1 m).
The 3030c comes in Satin Black, Satin White, Claro Walnut and Pin Oak, that is two wood finishes, one dark and one light. A single-piece trim ring surrounds the drivers, in satin nickel, or satin chrome on the white model. Each speaker measures 324 × 205 × 329 mm, weighs 7.5 kg and comes with its grille.
Data sheet
Specific References
KEF SQ1 aluminium floor stand for the Coda W, Q1 Meta, Q3 Meta and Q Concerto Meta speakers. Fillable column, internal cable routing, sold as a pair.