very well said.
i too did the "dj thing" to finance just about everything until i started teaching.
those were the days when i made the most money hands down.
the system rentals alone to other djs were more per month than my regular job! (ironically,my sub of choice for rental and use was cerwin vega earthquakes
)
i can safely say,they are good for what they can do. but when compared to a well designed sub horn or even a good vented box of comparable size, they would be the underdog. you can only know how good or not so good they are until your do an A/B with another sub. which i did, and as a result i went on a buying rampage trying to replace the woofers inside with "better drivers". back then i could afford it.
their seem to be some amazement on the part of some people of how much money djs can actually make, my partner and i made a deal with this upscale restaurant, ("on weekends we come in play some cool dinner music your guests can dance a Little after dinner, when the clock hits 11:00 you close the kitchen down, open up the bar and begin selling your drinks. we will charge $5.00 per head (they had nothing to lose) if the people come, you make your money at the bar, we make ours at the door you dont have to pay us anything.
one year later,contract was signed cover charge went up to $10.00 bucks $20.00 on special nights. Fridays and Saturdays 400 plus people each night, minimum.!