Cardioid Sub Arrays (Lots of them)

After reading a paper by the city of Amsterdam regarding SPL management during large events and especially some remarks regarding Cardioid Sub Arrays I did some sub array designs using Meyer Sound’s Map on Line.

After the predictions were done i decided to test a bunch of them using the 6 x 900LFC’s I have available within my company.

The tools on the processing part used in al of the screen captures are only delay and polarity to get maximum reduction at the back of the arrays. No EQ Allpass filters or other fancy options where used.

The equipment used: 6 x Meyer Sound 900LFC/Smaart V8.2/ISEMcon matched set of 8 EMX7150 mic’s/Yamaha RIO1608/Dante Virtual Sound card/lots of coffee.

The Arrays I tested can be done with just about any brand available on the market although I would be careful using horns as to front loaded subs.

First the captures on the 3 x 2 LFC per dolly.

3 stacks of 2 900LFC’s all to front in a Front Back Front horizontal config.

https://www.youtube.com/watch?v=ZUUDRXq8bZc&t=6s

3 x Front Back horizontal

https://www.youtube.com/watch?v=G49SCGfv7r0

3 x stack 2 900LFC all to front

https://www.youtube.com/watch?v=WQwiM-v5qx4&t=31s

End fired out of 3 x Front Back

https://www.youtube.com/watch?v=WYgY-kd9RpY&t=102s

A mix between Reversed End Fired and End Fired out of 3 x Front Back

A Reversed End Fired (gradient) out of 3 stacks of 2 900LFC all to front

https://www.youtube.com/watch?v=K3GetFZNsdY

A Reversed End Fired (gradient) out of 3 stacks of 2 900LFC in Front Back config

https://www.youtube.com/watch?v=iwKeyyntYNQ&t=4s

All map project files can be found at my blog: https://timobeckmangeluid.wordpress.com/2018/07/20/subjes-01/

After the 3 stacks of 2 900LFC’s per dolly i did some set-ups of 2 stacks of 3 x 900LFC per dolly.

First 2 x stack of 3 900LFC’s in a Front Back Front config per stack

https://www.youtube.com/watch?v=QzPzCveLVWo

2 stacks of 3 x 900LFC all to front in a Reversed End Fired and a End Fired config

https://www.youtube.com/watch?v=ciOyJ8vWunM&t=197s

2 stacks of 3 x 900LFC Front Back Front per stack in a Reversed End Fired and a End Fired config.

https://www.youtube.com/watch?v=3c-3SGSqvyQ

All map project files can be found at my blog: https://timobeckmangeluid.wordpress.com/2018/08/07/subjes-02/

Enjoy 😉