I will have them on a 4 channel amp in my van. See links below:
http://www.amazon.com/gp/aw/d/B001UDNX3M/ref=mp_s_a_1_1?qid=1427943191&sr=8-1&keywords=alpine+4x6+speakers&dpPl=1&dpID=41B2i%2Bk2bCL&ref=plSrch&pi=AC_SX200_QL40
http://www.amazon.com/gp/aw/d/B004THAWHG/ref=mp_s_a_1_5?qid=1427943092&sr=8-5&pi=AC_SX110_SY165_QL70&keywords=alpine+6.5&dpPl=1&dpID=41wGIjpslgL&ref=plSrch
http://www.amazon.com/DCX-460-3-Series-Coaxial-Speakers/dp/B00EZ8LTGM
http://www.amazon.com/gp/aw/d/B008B5JPTS/ref=mp_s_a_1_2?qid=1427943521&sr=8-2&keywords=Hertz+6.5&dpPl=1&dpID=51bp8PZ5vgL&ref=plSrch&pi=AC_SY200_QL40
http://www.amazon.com/gp/aw/d/B001UDNX3M/ref=mp_s_a_1_1?qid=1427943191&sr=8-1&keywords=alpine+4x6+speakers&dpPl=1&dpID=41B2i%2Bk2bCL&ref=plSrch&pi=AC_SX200_QL40
http://www.amazon.com/gp/aw/d/B004THAWHG/ref=mp_s_a_1_5?qid=1427943092&sr=8-5&pi=AC_SX110_SY165_QL70&keywords=alpine+6.5&dpPl=1&dpID=41wGIjpslgL&ref=plSrch
http://www.amazon.com/DCX-460-3-Series-Coaxial-Speakers/dp/B00EZ8LTGM
http://www.amazon.com/gp/aw/d/B008B5JPTS/ref=mp_s_a_1_2?qid=1427943521&sr=8-2&keywords=Hertz+6.5&dpPl=1&dpID=51bp8PZ5vgL&ref=plSrch&pi=AC_SY200_QL40