MartinLogan - ElectroMotion Dual 8" Passive 2-Way Floor Speaker (Each) - High Gloss Black - Open Box - Fair

Hello. Thank you for reaching out and we appreciate your interest in our products. Our recommended amplification power is between 20-400 watts per channel and they are compatible with 4, 6, and 8 Ohm rated amplifiers. The more power you can provide the speakers the more efficient the speakers will perform at lower volume levels. The speakers work well with a majority of all amplifiers so it really comes down to personal preference. It may also be beneficial to demo the speakers with different amps to see what you may prefer. We hope this helps and please let us know if you have any other questions.

Hello! Thank you for your question and your interest in our products. Our speakers are compatible with 4, 6, and 8 ohm amps, with a recommended amplification power of 20-400 watts per channel for the ESL X. With 300 watts per channel, that should be a great pairing and run the speakers efficiently. We hope this helps and please let us know if there is anything else we can help you with. Thanks again and we appreciate your support.

The impedance of the speaker is 6 ohms.

The maximum frequency response is 22 kilohertz.

The manufacturer's warranty for the speaker parts and labor is 5 years.