need directions badly on speakers

[jgapril@att.net]

Wow, this is a tough one to explain. I ride in the Mardi Gras parades down here  in New Orleans in my Jeep Wrangler. I need to add "marine" speakers to the top of my Jeep to broadcast music to the crowd. I already have a Rockford M400-4D Amp, and what I would like is to put 2 speakers on either side and maybe 2 speakers facing the front. What I don't understand is all about OHM's and speaker wattage, can someone help?  In my mind, I would like to build the attached, but not sure what speakers to use, and if I actually need the subwoofer? This is the speakers I like: (4) Rockville RMC65LW 6.5" 1200w White Marine Speakers w/Multi Color LED+Remote-----and this is the subwoofer I like:Rockville MS10LW 10" 2400 Watt White Marine/Boat 10" Subwoofer with LED

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[Jeffdachef 5,000+ posts]

two per pair of amplifier channels is fine you'll have no issues.

If you want to run a subwoofer, you'll need a dedicated subwoofer amplifier and make sure the subwoofer section is sealed off from the rest of the box so the rear waves dont interfere with eachother. Also you'll want to pair it with a pro audio subwoofer. 

https://www.rockvilleaudio.com/pa-subwoofers/

 

[jgapril@att.net]

 Do I really need a sub woofer, I am more interested in loudness, the crowd at Mardi Gras is very loud?

 

[jgapril@att.net]

And do I need to match up the ohm's, are they important?

 

[Jeffdachef 5,000+ posts]

 Do I really need a sub woofer, I am more interested in loudness, the crowd at Mardi Gras is very loud?

it fills out the sound.  However loud, you are using the wrong speakers.  You want something with really high sensitivity Pro audio speakers with 96 db sensitivity and higher. Along with some super tweets.  You dont need a sub but you need a much bigger box and more cone area. I'd do some Pro audio 10s in a ported enclosure tuned to 45 to 50hz.  Your amp is really small and weak, not really going to cut it for a large crowed. Your current speakers are small and pretty low sensitivity. Your current setup wont really wow anything. I'm guessing you want to show up everyone thats why i gave it to you straight. You'll need a lot more power, cone area and sensitivity along with a goodd ported enclosure for really good results to wow the audience.