The Elipson IC4 in-ceiling speaker is the most compact model in the Architect IN series. It features a two-way coaxial configuration with a 100 mm mid-bass driver and a 19 mm silk dome tweeter that can be angled. Its frequency response ranges from 85 Hz to 20 kHz. With an impedance of 8 ohms, it is compatible with most amplifiers and is suitable for multichannel setups as well as background music systems.
Coaxial design for sonic coherence
The coaxial architecture of the IC4 is at the heart of its acoustic philosophy. The 100 mm mid-bass driver uses a paper cone, a traditional material prized for its lightness and natural sound reproduction qualities. The rubber surround ensures controlled excursion while guaranteeing the transducer’s longevity. The 19 mm silk dome tweeter, positioned at the center of the main driver, offers a particularly interesting feature: its orientation can be adjusted by 35 to 40 degrees in any direction.
This ability to angle the tweeter allows you to optimize high-frequency dispersion according to the room layout and listening position. The crossover frequency set at 2,400 Hz ensures a smooth transition between the two drivers. The sensitivity of 84 dB (1W/1m), though moderate, is sufficient for most intended uses, while the power handling of 80 watts provides a comfortable margin to avoid distortion.
Its compact size, with a total diameter of 181 mm and a depth of 92 mm, makes it easy to integrate into standard ceilings. The 138 mm cutout diameter matches common in-ceiling installation dimensions, simplifying the replacement of existing equipment or installation in new builds.
Versatile use and multichannel integration
The IC4 fits into a wide range of setups, from residential installations to professional spaces. In a home theater context, it excels particularly as a surround speaker or for Dolby Atmos height channels. Its compatibility with multichannel formats allows for complete configurations, notably in 5.1.2 or 7.1.4 setups, where the IC4 provides the vertical dimension of the sound field.
For commercial spaces—restaurants, hotels, shops—the IC4 offers an elegant background music solution. Conference rooms, auditoriums, and educational facilities also benefit from its ability to deliver clear, intelligible sound without visual clutter. The white magnetic grille, ready to paint, allows for full customization to match any interior decor.
A pack of four IC4 speakers can effectively cover a room of 20 to 40 square meters, providing even coverage for music playback or surround effects. The frequency response, limited to 85 Hz in the bass, suggests pairing with a subwoofer for demanding hi-fi applications or to enhance the impact of movie soundtracks.
Installation and technical considerations
Installing the IC4 follows industry standards with a circular cutout of 138 mm in diameter. The minimum mounting depth of 92 mm suits most suspended ceilings, but it is advisable to allow an extra 2 to 3 centimeters behind the speaker to place mineral wool. This acoustic insulation improves damping of rear waves and optimizes sound quality.
The mounting system uses retractable clamps that deploy once the speaker is inserted into the opening, ensuring secure hold without requiring rear access. Connections are made via spring or screw terminals, accepting standard gauge cables for audio installations.
The magnetic grille makes it easy to access the drivers for any maintenance, while providing a neat finish. Its design allows for direct painting without having to remove the drivers first, simplifying aesthetic integration with the environment.
What is the difference between the IC4 and other models in the Architect IN range?
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The IC4 is the most compact model in the series with its 100 mm driver. Larger models like the IC6 (165 mm) and IC8 (210 mm) offer greater bass extension and higher sensitivity, but require larger cutouts and are better suited to bigger spaces.
Can the IC4 be used as a main speaker in a hi-fi system?
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While technically possible, the frequency response limited to 85 Hz in the bass means it is better used in conjunction with a subwoofer for satisfying hi-fi listening. The IC4 is better suited for surround, effects, or background music applications.
How should the adjustable tweeter be aimed?
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The tweeter should be aimed toward the main listening area. In a home theater setup, direct it toward the central listening position. For background music, angling it 15–20 degrees outward promotes wider, more even dispersion.
Is the IC4 compatible with 4-ohm amplifiers?
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The IC4 has a nominal impedance of 8 ohms. It works with all amplifiers compatible with 8 ohms. Amplifiers that only support 4 ohms are not recommended, as they could damage the speaker or the amplifier itself.
What spacing should be maintained between multiple IC4s in an installation?
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For even coverage, space the speakers 2 to 3 meters apart, depending on ceiling height and usage. In Atmos configurations, follow Dolby’s recommendations for height channel placement, generally 60 cm above the listening position.
Is a 100V transformer needed for professional installations?
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The IC4 operates at low impedance (8 ohms) and does not have a built-in 100V transformer. For installations requiring 100V lines, external adapter transformers can be added, but other models specifically designed for this type of installation would be more appropriate.
Is the IC4 suitable for damp rooms like bathrooms?
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The IC4 is not specifically designed for humid environments and does not have IP44 certification. For bathrooms or other areas exposed to moisture, choose models with suitable protection or install the speaker in a location shielded from direct splashes.
User reviews
Jeremy
Very good speakers for Atmos front applications
Easy to install, the instructions are very clear with the included cutting template. I set the crossover at 90Hz in my setup. Out of curiosity, I listened to them alone in their position, and in my opinion, they’re not meant for musical listening.
Comment from August 03, 2025 — Experience from July 22, 2025
Automatically translated — Show original (French)
Très bonnes enceinte pour application atmos avant
Facile a installé notice très claire avec le gabarit de découpe fournis .
Coupé a 90hz pour mon cas .
Par curiosité je les ai écouté seul a leurs place et ce n'est pas pour une écoute musicale,a mon sens .
Thomas
Excellent surround or Atmos speaker! I highly recommend it.
Comment from March 01, 2024 — Experience from December 04, 2023
Automatically translated — Show original (French)
Excellente enceinte surround ou atmos ! Je recommande.
Vincent
Very good sound in Yamaha and Denon surround speakers. Easy to install with templates. Discreet.
Comment from September 08, 2022 — Experience from April 19, 2020
Automatically translated — Show original (French)
Rendu très bon en enceinte surround sur Yamaha et Denon.
Facile d'installation avec gabarits.
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