CLN-3408 is a professional column loudspeaker. There are eight 3.5" woofer speaker units and one 3.25" Tweeter unit inside. This speaker is a great sound product for churches and has been used a lot in European churches market. And is has a universal mounting bracket which makes it very easy to install. The most important feature for this product is that it has a very outstanding sound performance because of our special sound tuning technology. You must listen to it!