Hi Andrew thanks for the care. Sorry for the late reply but I had a problem with my computer and had to wait for some parts to arrive so I could fix it. As a matter of fact I just realized that there is no air coming out the rear port on the last M22 sent to me, so there is definitely something wrong with it. The woofer and the tweeters are all working but there is no airflow coming out at all. Thanks for your support!