forums.mackie says: Aside from doubling up the system components, what else could i add to increase the spl/low end and throw for larger venues...Thinking about adding a pair of 1801's under the 1501's and then possibly upgrading the 450's to something more powerful in the mackie range for fear of them getting swamped by the bass...The 50 line rig is a proper 4-way system though with all the drivers being given individual frequency ranges to work within, whereas the mackie setup could only ever be a 3-way system due to the crossover range of the 1501's being simlar to the 1801's...see more

forums.mackie says: I have an older pair of SWA1801's (that may be key) - and mine have performed very well - and we do crank them...I have a pair of older (2004) SWA1801's, they have EMINENCE (made in USA for mackie) drivers in them, at 4ohm...see more

music-electronics-forum says: I asked Mackie and they weren't sure...Q27 2SA1478 seems to be the weak link...Both have LED lit in this pattern lit-off-off-lit...see more

avsforum says: Here a question and a good tip the same time...Everyone that look for a affordable insane great sounding sub should listen to the Mackie HRS120...Really I can not insist enough that if you search for a reall good sub give the Mackie HRS120 a listen...see more

sweetwater says: Sweetwater Sound is the world's largest direct mail musical ... Ask questions, get answers about the Mackie SWA2801z in Sweetwater's Noise Gate Forum. ...see more