Helos Series speakers deliver legendary MartinLogan quality and performance in compact, high-resolution in-ceiling loudspeakers. Models feature aimable neodymium soft dome tweeters, high-rigidity aluminum cone woofers, and proprietary Vojtko crossover topology.
Helos 12
Helos CI Series in-ceiling speakers have unique Neodymium Soft-Dome aimable tweeters, providing wide dispersion, making them ideal for any channel in a traditional or object-based surround application(Dolby Atmos/DTS:X).
Helos 22
Helos 22 is a high-resolution stereo in-ceiling loudspeaker featuring dual 0.75-inch neodymium soft dome tweeters, an aluminum cone woofer, and proprietary Vojtko crossover topology.
| Model |
Helos 12 |
Helos 22 |
| Frequency Response |
47–20,000 Hz ±3dB
|
47–20,000 Hz ±3dB |
| Aiming |
Pivoting Tweeter Stem |
Pivoting Tweeter Stem |
| Recommended Amplifier Power |
20—200 watts per channel
|
20—100 watts per channel |
| Sensitivity |
89 dB/2.83 volts/meter
|
89 dB/2.83 volts/meter |
| Impedance |
-
4 Ohms
- Compatible with 4, 6, or 8 Ohm rated amplifiers.
|
- Mono: 4 Ohms.
- Stereo: 8 Ohms × 8 Ohms
- Compatible with 4, 6, or 8 Ohm rated amplifiers.
|
| Crossover |
2800 Hz
|
2600 Hz |
|
High Frequency Transducer
|
1" (2.5 cm) neodymium soft-dome tweeter |
Two 0.75" (1.9 cm) neodymium soft-dome tweeters |
| Low Frequency Transducer |
6.5" (16.5 cm) cast basket, high rigidity aluminum cones with extended throw drive assembly, thermal protection |
6.5" (16.5 cm) cast basket, high rigidity aluminum cones with extended throw drive assembly, thermal protection |
| Cut-Out Dimensions |
8.35" dia.
(21.2 cm dia.) |
8.35" dia.
(21.2 cm dia.) |
| Projection From Wall Surface |
0.2" (.45cm) |
0.2" (.45cm) |
| Depth Behind Wall Surface |
4.4" (11.2 cm) |
4.9" (12.3 cm) |
| Rough In Bracket (sold separately) |
$40.00 |
$40.00 |
