Helos 10

High-Performance In-Ceiling For Small and Mid-Sized Rooms

Lifelike imaging from a very compact, high-performance, in-ceiling speaker.

Helos 10 is suitable for any application in average to small rooms. Ideal for use in a multi-channel home theater as a surround speaker, in a kitchen as 2-channel stereo speaker, or in a hallway as a single-channel distributed audio speaker. The Helos 10 delivers legendary MartinLogan quality and performance in a compact, high-resolution in-ceiling loudspeaker. Featuring a 1-inch neodymium soft dome tweeter mounted in an aimable stem, high-rigidity aluminum cone woofer, and proprietary Vojtko crossover topology, Helos 10 effortlessly provides extreme sonic accuracy.

Launched in 2008

Price when discontinued:



Specifications are subject to change without notice

Frequency Response

47–20,000 Hz ±3dB


Pivoting Tweeter Stem

Recommended Amplifier Power

20‒200 watts per channel


89 dB/2.83 volts/meter


4 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers.

Crossover Frequency

2800 Hz

High Frequency Transducer

1" (2.5 cm) neodymium soft-dome tweeter

Low Frequency Transducer

6.5" (16.5 cm) cast basket, high rigidity aluminum cones with extended throw drive assembly, thermal protection


Air core coils, polyester capacitors


Binding posts


4.5 lbs. (2 kg)

Required Wall Opening (includes tolerance)

8.35" × 8.35"
(21.2cm × 21.2cm)

Projection From Wall Surface

0.4" (1cm)

Depth Behind Wall Surface

4.5" (11.4cm)

Customer Reviews For Helos 10

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Jitendra K.

  • Saturday, April 10, 2010

You can never go wrong with ML
Great speaker, quality and performance, i have seen from ML, i have bought 2 helos10 and 10 helos20 and still planning to buy 25 more as my friends also want to buy. I would always say you can never go wrong with ML speaker.