Helos 20

DISCONTINUED

Launched in 2008

Price when discontinued: $399 each


Paintable White Perf Metal

Helos 20


High-Performance Stereo Sound From a Single In-Ceiling Speaker

Helos 20 delivers stereo sound from a single speaker, ideal for use in small rooms such as bathrooms, small offices, entryways, and kitchens. Helos 20 also bridges to deliver mono sound reproduction with wide dispersion. Delivering legendary MartinLogan quality and performance in a compact, high-resolution in-ceiling loudspeaker. Featuring dual 0.75-inch neodymium soft dome tweeters, a high-rigidity aluminum cone woofer, and proprietary Vojtko crossover topology, Helos 20 effortlessly provides solid imaging with extreme sonic accuracy.





Frequency Response

47–20,000 Hz ±3dB

High Frequency Transducer

Two 0.75" (1.9 cm) neodymium soft-dome tweeters

Aiming

Pivoting Tweeter Stem

Low Frequency Transducer

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

Sensitivity

89 dB/2.83 volts/meter

Impedance

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

Recommended Amplifier Power

20‒200 watts per channel

Recommended Amplifier Power (Stereo)

20 watts × 20 watts ‒ 100 watts × 100 watts

Crossover Frequency

2600 Hz

Components

Air core coils, polyester capacitors

Inputs

Stereo binding posts (bridge for mono)

Weight

4.5 lbs. (2 kg)

Required Wall Opening (includes tolerance)

8.35" × 8.35"
(21.2cm × 21.2cm)

Projection From Wall Surface

0.37" (1cm)

Depth Behind Wall Surface

5" (12.7cm)

Specifications are subject to change without notice.



 
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