MartinLogan - Motion Dual 4" Passive 2-Way Bookshelf Speaker (Each) - Black

Hello. Thank you for your question and we hope all is well. Yes, our Folded Motion tweeters have an 80° x 80° dispersion pattern, which allows SLM and SLM XL to sound the same in a horizontal or vertical orientation, making them perfect for Left-Center-Right (LCR) system applications. We hope this helps and please let us know if you have any other questions. We appreciate your support and interest in our products.

Hello. Thank you for your question and we hope all is well. We don't have any models or brands to recommend as the speakers work with almost everything. It's pretty subjective as it will really be a matter of personal preference, including for our staff. However, something that might be helpful is we do recommend an amplifier power of 20-140 watts per channel. If you are providing around 100-140 watts per channel, you should be sending sufficient power to the speakers. We hope this helps and please let us know if there is anything else we can assist you with. We appreciate your question and support.

Yes, the grille can be removed. It is acoustically transparent but protects the speaker components.

This speaker has a sensitivity of 94dB, ensuring crisp and robust audio.

This speaker has a nominal impedance of 4 ohms.