I just got 2 12inch L7's in a ported box and i was trying to figure out how to power them. The subs are two ohm and so if i wanted to power them with a mono channel amp and use a bridging wire to connect the subs i would want to get a 4 ohm amp correct?
And as for powering those since they are rated a 3000 watts together an 1500 rms, also together, i should be able to use a 3000 watt 4 ohm mono channel amp and power them both correctly and sufficiently. Right?
you have two ways to go.
first you can connect each sub the following way
on the back of your l7s you have two red and two black connectors and one set has a dot in the center IE red with dot black with dot
you connect the black with dot to red no dot
do this to EACH sub seperately
then connect the wires that connect to your amp to the red with dot and black no dot,that will step up your OHM load and make each sub 4 ohm and if your using a mono Amp when you tie the two subs together the amp will see a 2 ohm load.
now your going to need a amp capable of putting out 3000k RMS to properly push these and IMHO there isnt many in a afforable price range for a single amp that will do that.Dont believe what you read on some of the cheaper Performance teknique and the like amps ive metered these before and they are WAY over rated in every sense of the word.
The way i would go is the following
connect the reds togehter "red with no dot to red with dot"
and blacks together "black and black with dot"then connect your positive speaker lead from your amp to any red one on each sub and your negative connector to any of the blacks
now you stepped down the ohm load and the subs will be at 1 ohm
then go and get TWO decent amps rated for a 1 ohm load at 1k or better
JL audio some kicker and some sony i beleve will do what you want.
Its more efficent easy to set up and IMHO will be more affordable in the long run.The two amps wont heat as much or as fast as the one amp and you can get way better quality for a few bucks more than the single amp plus it just looks dammed cool !
hope that explains it