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Live sound: 4x 5KW amplifier from Linea Research

Linea Research have released the latest and most powerful member of their 44M family: the 44M20. This has the mind-boggling specs of four 5KW power amplifiers in one 2U 13Kg chassis, designed for touring companies where subs have to be powered and fed independently from the mids/tops.

How to solve rumbling on the stage caused by Subs?

Hello experts,

Jarjar here. Misa confused about Subs causing rumble on the stage.
I worked as stage hand to a concert last week. They had problems with this rumbling movement caused by the subs. The subs were positioned in front of the stage, piled in 6 pairs, so there were 12 subs in total. But the vibration the subs caused was annoying for the musicians on stage.

Mobile Live Sound Rig (half rack space unit)

Starting in January, I am going to be going into schools with one other guy and putting on presentations. We need a small, portable system to drag around with us that is easy to set up and strike. We need two inputs for each of our headsets, two more for each of our guitars, one for playing music, and one for miscellaneous. Here is my idea. I want to use a unit like this:

New live sound / remote rig? PreSonus 16.0.2

You know how one "sensible" purchase can lead to another, which can lead to another... Well I might be getting started on one of those spirals. One of the bands I'm in is probably going to be playing a lot of local gigs in small venues where we have to provide the sound support and mix from the stage.

Small Venue (50-100) Live Sound

Doing sound for 4 bands, our first gig...Here's what I have (or have coming) for gear: (All Yorkville, being a Canuck)

AP812 Powered Mixer A, B Amps 450 watts into 4 ohms

Pr. YX15's 300 Watts pgm Plan to use these as FOH
Pr. E12's or PL10's for stage monitors (the E12's are probably the best spkr I have)
4 stands
LS200 powered sub