MartinLogan Helos 22 In-ceiling Speaker

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.

• Frequency Response 47–20,000 Hz ±3dB
• Aiming Pivoting Tweeter Stem
• Recommended Amplifier Power 20—200 watts per channel
• Recommended Amplifier Power (Stereo) 20 watts × 20 watts ‒ 100 watts × 100 watts
• Sensitivity 89 dB
• Impedance Mono: 4 Ohms. Stereo: 8 Ohms × 8 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers.
• Low Frequency Transducer 6.5"
• Two 0.75" neodymium soft-dome tweeters

Cut-Out Dimensions: 8.35" W X 4.9" D