Ci250RRb-THX
KEF Uit productie

Ci250RRb-THX

A 250 mm (10 in.) in-wall subwoofer from KEF's Architectural Speakers range, part of the Extreme Home Theatre line-up. It suits music, film and gaming systems and is designed to be driven by KEF's KASA500 DSP amplifier.

  • 250 mm (10 in.) extra-long-throw bass driver
  • 150oz magnet in the motor system
  • Frequency response 20Hz to KASA setting (±6dB), open-backed
  • Maximum SPL of 109 dB measured at 1 m
  • Designed to be driven by the DSP-equipped KASA500 amplifier
  • Needs a 140L ideal rear volume (70L minimum)
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Beschrijving

The Ci250RRb-THX is an open-backed architectural subwoofer that fits into a wall or ceiling. It uses a single extra-long-throw 250 mm (10 in.) bass driver with a 150oz magnet in the motor system. KEF quotes low-distortion output down to 20Hz (±6dB) and a maximum SPL of 109 dB measured at 1 m.

It belongs to the Extreme Home Theatre group within KEF's Architectural Speakers and carries THX branding. Its frequency response and range are given relative to a KASA setting, because bass tuning is handled by the DSP in KEF's KASA500 amplifier, which is the recommended partner for the driver. It can also be paired with other KEF loudspeakers in a stereo or home theatre system.

Installation needs a 300 mm x 300 mm cut-out and a mounting thickness of 6 mm to 30 mm. The open-back design calls for a rear volume of at least 70L, with 140L as the ideal. Software for the Ci range is available from KEF's Ci Software Download page.

Video

Specificaties

Merk
KEF
Model
Ci250RRb-THX
Categorie
Hi-Fi en home-audio › Speakers

Audio

Frequency response
20Hz - KASA setting (±6dB) Open-backed
Frequency range
16Hz - KASA setting (-10dB)
Maximum SPL (measured at 1m)
109 dB
Drive units
LF: 250mm (10in.)
Mid-frequency driver
-
High-frequency driver
-

Installation

Cut-out dimensions (H x W)
300 mm x 300 mm (11.81 in. x 11.81 in.)
Mounting thickness, maximum
30 mm (1.18 in.)
Mounting thickness, minimum
6 mm (0.24 in.)
Ideal rear volume
140L
Minimum rear volume
70L

Physical

Product external dimensions (H x W x D)
346 mm x 346 mm x 153 mm (13.62 in. x 13.62 in. x 6 in.)
Net weight
5.6kg (12.3lbs)

Compatibility

Recommended amplifier
KEF KASA500 (DSP-equipped)
Range
KEF Architectural Speakers, Extreme Home Theatre
Certification
THX

Gegevens: kef.com; foto’s: KEF product page · bijgewerkt 2026-10-12 · Een fout gevonden? Schrijf ons