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MartinLogan Helos™ 22 In-ceiling stereo input speaker

Item # 839HE22

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5 questions - 5 answers

Item # 839HE22

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In stock
$529.99 each

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About the MartinLogan Helos™ 22

Dave Bar

Stereo sound from a single speaker

Don't have room for separate stereo speakers? No problem. MartinLogan's space-saving Helos 22 makes it easy to enjoy rich stereo sound from a single in-ceiling installation. It's ideal for use in areas where multiple in-ceiling speakers may be impractical (or impossible), such as hallways, entryways, small offices, or walk-in closets. 

MartinLogan Helos 22 in-ceiling speaker

Made from the right stuff for superlative performance

The Helos 22 features two high-resolution 3/4" soft dome tweeters for sparkling clear, stereo highs, and a dual-voice-coil 6-1/2" aluminum cone woofer for dynamic midrange and tight, responsive bass. A hand-built, audiophile-grade crossover ensures seamless driver integration for low-distortion, high-accuracy sound.

Installer-friendly design

The Helos 22's robust mounting-lock system allows quick, trouble-free installation, providing firm coupling of the speaker's chassis to the ceiling. And this speaker is practically invisible thanks to an ultra-low profile, micro-perforated grille and hidden bezel. Magnets hold the grille in place, reducing the risk of warping or damage during installation. The Helos 22 can also be bridged to mono mode for wide dispersion sound reproduction in a distributed audio system.

Got wire?

Most speakers don't include any. Learn more about in-wall wiring.
Shop our selection of in-wall speaker wire.

Product highlights:

  • dual 3/4" soft dome tweeters
  • dual-voice-coil 6-1/2" aluminum cone woofer
  • frequency response: 47-20,000 Hz (±3dB)
  • recommended amplifier power: 20-200 watts (mono), 20-100 watts per channel (stereo)
  • sensitivity: 89 dB
  • impedance: 4 ohms mono; 8 ohms stereo (compatible with 4-, 6-, or 8-ohm rated amplifiers)
  • hand-built, audiophile-grade crossover network
  • paintable speaker grille
  • frame dimensions: 9-1/2 diameter
  • cutout dimensions: 8-3/8" diameter
  • mounting depth: 4-15/16"
  • warranty: 5 years (with product registration)
  • MFR # HELOS22

What's in the box:

  • In-ceiling speaker
  • Grille
  • Paint cover
  • User's Manual (En/Fr)
  • Installation template
  • Product Registration Card

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More details on the MartinLogan Helos™ 22

Stacey B.

Features & specs

Quantity in Package Single
Tweeter Soft-Dome
Aimable Tweeter No
Woofer Composition Aluminum
Woofer Surround Rubber
Connector Type Spring post
Bi-Amp Inputs No
Built-in Back-box No
Moisture Resistance
Indoor (Moisture-resistant) No
Outdoor (Partial Exposure) No
Outdoor (Full Exposure) No
Tweeter Size 0.75
Midrange Size N/A
Speaker Shape Round
Woofer Size 6.5
Cutout Width 8.375
Cutout Height 8.375
Mounting Depth 4.9375
Power Range (Watts) 20-200
Sensitivity 89 dB
Impedance (Ohms) 8
Frequency Response 47-25kHz
Parts Warranty 5 Yrs w/ Registration
Labor Warranty 5 Yrs w/ Registration

Product Research


In-Ceiling Loudspeaker: The Helos 22 delivers legendary MartinLogan quality and performance in a compact, high-resolution in-ceiling loudspeaker. Featuring dual 0.75" neodymium soft-dome tweeters, a high-rigidity aluminum cone woofer, and proprietary Vojtko crossover topology, Helos 22 effortlessly provides solid imaging with extreme sonic accuracy.

Dual Tweeters:  The Helos 22 in-ceiling speaker features two high-resolution neodymium 0.75" tweeters. This dual tweeter design allows the speaker to provide stereo sound from a single speaker.  The Helos 22 also bridges to deliver mono sound reproduction with wide dispersion.

Aluminum Cone Woofer: The Helos 22 in-ceiling speaker employs a 6.5" aluminum cone woofer with a rubber surround and cast aluminum basket for detailed midrange and powerful midbass extension.

Precision Vojtko Crossover: Carefully hand-built using only the finest polyester capacitors and air-core coils, the crossover employ's MartinLogan's proprietary Vojtko topology for vanishingly low distortion and seamless driver integration. This precision-tuned network preserves even the most microscopic sonic nuances while handling the full dynamics of any source.

Stereo Input: The MartinLogan Helos 22 features a pair of stereo spring-post connectors to attach your left- and right-channel speaker wires. The spring-posts will accept bare wire (16- to 12-gauge) and pin-connectors.

Robust Mounting Locks: A robust mounting-lock system allows quick, trouble-free installation. When not in use, the constant-control mounting locks are held securely within a self-contained housing. When moved into place during installation, they couple the speaker's chassis firmly to the ceiling. And if the speaker is ever removed, the locks retract and latch themselves back in their housings.

Low Profile Grille: The MartinLogan Helos 22 features a low profile, paintable micro-perforated grille with no visible bezel for a near invisible integration into any ceiling. A magnetic system secures the grille easily into place, reducing the risk of warping or damage during installation.

Applications: You can use Helos 22 for almost any application; its designed to be used as a single stereo speaker in a distributed audio system or a wide dispersion home theater surround speaker.The Helos 22 in-ceiling speaker is ideal for use in small rooms such as bathrooms, small offices, entryways, and kitchens.

Installation Dimensions: The in-ceiling speaker has an overall measurement of 9.5" in diameter x 5.125" deep. It requires a cut-out of 8.375" in diameter and a mounting depth of 4.9375" behind the ceiling surface. The speaker only protrudes 0.25" from the ceiling.

Break-in Period: Allow approximately 72 hours of break-in at 90 dB (moderate listening levels) before any critical listening.

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Customer Q&A

5 questions already asked

Can you install back box?
daniel  Dec 14, 2022
1 answer
It would be possible to install this speaker into a back-box. For example, we currently carry the Dynamat Dynabox, which I have linked below for reference:
zachary  Dec 14, 2022 (Staff)
is there a square grill conversion kit available for these speakers?
jeremiah  Jun 27, 2020
1 answer
Hi Jeremiah. Unfortunately there are no square grilles available for the Helos 22 speakers, however, you may want to check out these Focal 100 IC 6-ST speakers. These are also a stereo input speaker, and come with a square grille in the box.
jessica  Jul 13, 2020 (Staff)
can these be used as both a side and rear surround speaker?
christopher  Dec 04, 2018
1 answer
The dual tweeter design makes the great for surround back speakers, but not for side surround speakers. Their single tweeter version, the Helos 12, is best for the side speakers in this type of system: My Bio:
jason  Dec 11, 2018 (Staff)
Which is better: Helos 22 or Electromotion in-cieling speakers? I have non-ESL Martin Logan floor speakers
jakeg  Nov 27, 2015
1 answer
Either model will work very well. Assuming you want to use these as surround channels, the Helos will match best with the non-electrostatic versions of their towers. I Hope that helps!
ryan  Dec 02, 2015 (Staff)

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