ATOHM S250 ICE POWER Amplifier module Class-D Subwoofer

ATOHM S250 ICE POWER Amplifier module Class-D Subwoofer

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This model is replaced by the new version: S250-X ATOHM

Atohm S250 Ice Power

Module Amplificateur Class D Subwoofer

Atohm S250 Ice Power Module Amplificateur Class D Subwoofer

Specialized in the design and manufacture of high-end loudspeakers and loudspeaker cabinets, Atohm also designs and offers amplification modules with a very high level of performance. Thanks to their sophisticated signal processing, Atohm modules offer a wide choice of settings and connections to meet a wide range of applications such as closed-load active subwoofers or Bass-Reflex, active loudspeakers or monophonic power blocks. All this while offering excellent technical performance and musicality in a small footprint.

Important studies have been carried out by the brand on components, schematics, layout topology, power supply as well as general construction to develop the best products.

The S250 Atohm Amplifier Module includes many features and specifications :

  • Ice Power TM output stage with a power of 220W RMS under 4 Ohm. Class D technology, ensuring an excellent efficiency of 80% and a high damping factor, making the module compatible with any load impedance greater than or equal to 3 Ohm. Great musicality and generous power in a very small footprint.
  • Peak limiter section with 2 levels: 0dB and -1dB, with "Soft Clipping". When clipped (excess input level), a sinusoidal signal is transformed into a square signal containing an infinite number of perfectly audible odd harmonics (distortion). In a subwoofer application, this distortion distorts the sound and makes it possible to perfectly locate the subwoofer because it contains high frequencies. The clipping limiter associated with the low-pass filter stages (variable or LFE) reduces or eliminates clipping distortion.
  • X-Guard technology overcomes the drawbacks of a conventional subsonic filter by ensuring that the speaker excursion never exceeds an absolute limit (risk of breakage, very high distortion) regardless of the amplitude of the input signal. This technology preserves the signal and its phase (unlike a subsonic filter). The extreme bass is more faithful, the connection with the main speakers more homogeneous and the speaker protected. The S250 offers two settings (X30 and X35) for this X-Guard technology (refer to the manual in the "Download" tab of this page).

It is possible to connect the module via the pre-out/subwoofer outputs of a preamplifier/processor or directly to the speaker outputs (in parallel) of a conventional stereo amplifier. The S250 module can also be by-passed to high performance HiFi broadband use (mono block) via a simple internal switch. In this case, only the gain control remains active. This can be used to create monitor speakers for example.

Atohm S250 Ice Power Module Amplificateur Class D Subwoofer

Technical characteristics

Specifications
Product typeAmplifier module
Amplification classD
Power220W RMS
Impedance4-16 Ohm
Frequency response (direct mode)20Hz - 20kHz (0.2dB)
1.5Hz - 75kHz (-3dB)
SNRDirect mode : 115dB
Subwoofer mode : 96dB
Damping factor (8 Ohm, 100Hz)> à 1000
THD+N< 0.1%
Variable low pass filter38Hz à 200Hz, 24dB/octave (disengageable LFE)
Phase inverter0-180°
General
Supply voltage230V 50Hz
Consumption320W Max.
Weight900g
Package1x Atohm S250 module
Speaker cable
Power cable
Atohm S250 Ice Power Module Amplificateur Class D Subwoofer Atohm S250 Ice Power Module Amplificateur Class D Subwoofer Atohm S250 Ice Power Module Amplificateur Class D Subwoofer
 
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Average votes
5.0 / 5
4 reviews
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Note :
 5/5
Date :
RAs
Livraison rapide sans problème. Ampli Sub excellent
 (0)
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This review has been posted for ATOHM S250 ICE POWER Amplifier module Class-D Subwoofer
Note :
 5/5
Date :
Toujours excellent
Second avis après mise en place du module dans un caisson DIY avec un HP Focal 25A4 chargé dans 58L clos. J'ai laissé le X-guard au niveau 1 et ai laissé le module en mode "linéaire" (QTC à 0.707).

Concrètement, c'est le meilleur caisson que j'ai eu entre les mains pour un tarif très abordable. Le module Athom S250 s'adapte à toutes les situations grâce à ses nombreux réglages et est largement suffisant en Hifi. En prenant le temps de faire les bon réglages (en lisant bien le manuel), le résultat est redoutable de précision.

J'étais très satisfait lors de mon premier commentaire et le suis toujours : un très bon module d'ampli.
 (0)
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This review has been posted for ATOHM S250 ICE POWER Amplifier module Class-D Subwoofer
Note :
 5/5
Date :
Royal
Audiophonics au top pour les conseil et la livraison rapide, concernant le HP, monté dans un caisson basse-reflex de 90 litres avec 3 évent en L de 80mm de diamètre et 70cm de longueur,et équipé d un Atohm s250-x,ça pousse fort,c est rapide et sec,je vais quand même le testé en version close(l Atohm possède une position closes et ventes) et je garderais celui qui me convient le mieux.
Utilisé dans un salon de 32 mètre carré..
Le réglage de l Atohm est a 10 heures
 (0)
 (0)
This review has been posted for ATOHM S250 ICE POWER Amplifier module Class-D Subwoofer
Note :
 5/5
Date :
Très bon module en Hifi
J'ai installé ce module en lieu et place dans un Velodyne Impact 12 de conception assez basique (HP chassis tôle), le module d'origine étant HS.

En tant que novice en caisson, j'ai suivi scrupuleusement les réglages préconisé par le constructeur sur le mode d'emploi et conservé la protection X-GUARD. Le résultat est sans appel avec des Elipson Planet L, rien à voir avec l'ampli d'origine. Le caisson est maintenant à sa place.

Je pense à l'avenir investir dans un HP Dayton Audio plus petit (20 cm) mais plus qualitatif en réutilisant ce module afin de réaliser un petit (20 - 25L) caisson efficace.
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This review has been posted for ATOHM S250 ICE POWER Amplifier module Class-D Subwoofer
 

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