For your convenience of hooking up more than 1 speaker. This must be your first real mono amp huh? If you have the manual you may want to read it. You can learn some things about it that you probably don't know. Good choice in a amp.//content.invisioncic.com/y282845/emoticons/naughty.gif.94359f346c0f1259df8038d60b41863e.gif
They are internally joined. If you open the back place, you will see they are together.It just makes it easier for you to wire the subs, just like what he said...^