Atohm Sirocco Center 24
Atohm 2.5-way bass reflex centre speaker, designed for dialogue clarity and tonal coherence with front speakers in home cinema systems.
Description
The Sirocco Center 24 is a bass reflex centre speaker, structured as a 2.5-way design with two C150 DCR 08 woofers and a WSD20 DND 04F tweeter. It is intended to occupy the centre channel of a home cinema system, responsible for reproducing dialogue and voice.
Its sensitivity of 88 dB/2.83V/1M and impedance of 6 ohms (minimum 3.5 ohms at 38 Hz) define moderate amplification requirements for everyday use. The continuous power handling of 130 Weff, and up to 320 Weff peak over one second, allows for a comfortable dynamic reserve, with a maximum SPL of 111 dB at 1 metre. The frequency response extends from 43 Hz to 25 kHz (-3dB), with a crossover frequency set at 3.5 kHz and a first-order electrical filter with impedance compensation, aimed at achieving tonal consistency with the front speakers in the same range. The 18 mm MDF cabinet contributes to the overall mechanical rigidity.
This centre speaker is intended for home cinema systems paired with the Sirocco 1.24 and 2.24 models, for users seeking tonal coherence between channels and clear dialogue reproduction in demanding multichannel setups.
Technical specifications
| Type | 2.5-way bass reflex centre speaker |
| Sensitivity level | 88 dB/2.83V/1M |
| Power handling (IEC 60268, 100H) | 130 Weff |
| Short term power handling (1s, IEC 60268, 80 20kHz) | 320 Weff |
| Maximum short term SPL (1s, 80 20kHz, 40Veff) | 111 dB @ 1M |
| Impedance | 6 ohms (3.5 ohms min @ 38 Hz) |
| Frequency response | 43 Hz - 25 kHz (-3dB) |
| Crossover frequency | 3.5 kHz |
| Woofer | C150 DCR 08 (x2) |
| Tweeter | WSD20 DND 04F |
| Filter slope | 1st order electrical with impedance compensation |
| Cabinet | 18 mm MDF |
| Finish | Black / satin lacquer (single finish) |
| Dimensions (H × W × D) | 490 × 180 × 300 mm |
| Weight | 10 kg |
What to check before buying used
With a centre speaker of this type, it is advisable to check the condition of the surrounds on both woofers as well as the tweeter, particularly for any deformation or hardening that could affect the frequency response. The passive filter, here first-order with impedance compensation, also warrants a visual inspection of components and solder joints. The satin lacquer finish of the cabinet may show signs of use or handling that should be examined before purchase.
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