A:AnswerI have them on my 99 Harley road king mounted on the foot rest bar. Wife can hear them sitting behind me just fine. I hear them still when I am going 90mph
A:AnswerI am asking the same question had issue with box upc scrathed so called amazon and they are sending another 420b 600 watt matte black. Want to know if i can use both amps with 1 bluetooth signal
A:AnswerThere is only a spot to plug in the 4 speakers it comes with. I guess you could split in extra speakers but you'd just be splitting the power in 1/2 to each speaker and if you're underpowering the speakers they'll sound way worse.
A:AnswerThe power supply is just a positive and negative wires with a 30 amp fuse. What I did was striped a battery tender wire, the set I bought came with the bolt on ones that bolt to the battery and the clip ends like jumper cables, so the bolt on part I put on my battery and cut the jump cables end and used the male and female end to wire to the power wires for the amp so now all I gotta do to turn it on is hook those two pieces together. It’s not hard to do at all.