I've been making cold brew coffee for iced coffee for years now. It isn't that much different from regular coffee but it is slightly less acidic. You do not need a special maker for it.
1. Make it in a French press. I use a French press pot because I have it anyway for brewing up coffee. I have an 8 cup French press maker and you can adjust the amount of coffee to suit your own taste. I use at least a cup of ground coffee to 3 1/2 cups of water. Sometimes I even use a little more. My mother also makes cold brew coffee and she uses a little less coffee in hers, so you have to try to see what you like. All you do is put the coffee in the bottom of the French press, pour in the water, stir, pop the top on without plunging it down and put it in the refrigerator for about 12 to 24 hours. After that time, you plunge it to press all the grounds to the bottom and then you're ready to pour it out.
2. Make it in a large pitcher or large measuring cup with pour spout. Do as above, mixing ground coffee and water in the pitcher and putting in refrigerator for putting in refrigerator for at least 12 hours, and then pouring it slowly through a strainer lined with the coffee filter into another pitcher
Either way it's simple and either way you don't need a special cold room maker.