I feel very honoured Bhai after reading your comments ...
Sound deadening is a must for every SQ system car. I spoke to Brother STJ ... he suggested sound deadening inside the sub enclosures. By default, the fiber sub enclosures are going to have flex, no matter how thick I make them ...
He suggested sound deadening plus 50% fill with polyester fiber inside the sub enclosures.
The SS amps were selected after lot of consultation. I hope we can witness their true potential .. The SS Ref 800.4 won so many awards, so now lets see why the awards found their way to these beauties