if u only had 2000watts max power runnin each seperately thats why, but i still think the solo-x 18, would be louder because cone area but that is no where near enough power to make the x loud as it can be, u need around 2500rms just to wake the x 18 up lol
Kanishka,forget about MAX power,the MAX power for the Solo X is 10,000 Watts.The RMS is 5,000 watts.Anyhow...the Solo X should be louder than the L7.How do you have everything wired?