MartinLogan - Motion XT Series CI, Retro-Fit Backbox Enclosure for XTC8-HT - Black/Silver

Hello. Thank you for your question, and we apologize that your question was missed. We had some issues receiving these but believe that is now fixed. It is designed as a back box to fit our XTC8HT speaker. The terminals are attached because the back can seals the back of the speaker, which is normally open, so there must be a way to connect speaker wire. Normally the speakers binding posts are easily accessible, but when the back can is attached, they are now covered. The accessory is not meant to be a universal option but specifically for the C8-HT models. We hope this helps, and thank you for your interest in our products. We hope you have a wonderful day and thank you for your support.

Hello. Thank you for your question, and we hope all is well. This is a backbox enclosure for the MartinLogan XTC8-HT speaker. Its use is to help prevent sound from coming from the back of the speaker that can distract those in the rooms above the speakers. They offer 20dB of noise reduction into adjacent areas and offer the perfect solution to achieve consistent performance where ceiling cavity sizes may vary throughout an installation. Please note that the volume of air in the retrofit enclosure is smaller than that of your ceiling, and bass extension will be reduced. If sound control is not necessary for your unique installation, we recommend not using the backbox so the speaker can take advantage of the larger airspace in your ceiling cavity. We hope this helps, and thanks again for your questions.

No, this back box enclosure does not have wireless capabilities.

No, the C8HTBXR back box is specifically designed for the MartinLogan XTC8-HT speaker model.

Using the back boxes will reduce bass extension due to the smaller volume of air compared to an open ceiling cavity.