Ok, so I've been messing around with LspCAD (the Adire demo), and I modified one of the Low Q designs that Dan has on his site (I changed it from a Tempest to dual Shiva's). So here are the specs...
200 litre enclosure.
16Hz Port tuning
Twin 4" ports 25.7" long
50% fill
Qa 15.0
Ql 15.0
Group Delay of around 18ms @ 20Hz
I filled in my room dimensions (3x5x4 meters roughly), I also filled in a proposed front baffle size (.762x.559 meters again).
It says I should have in room that is pretty flat from about 50Hz on down to an F3 around 14Hz?! (with 500w of power).
The "Free Air" side says I should have an F3 around 22Hz.
So did I miss something here? Almost seems a little to good to be true for a "smaller" enclosure (for 2 Shiva's) of around 7cu/ft...did I miss something, make an error somewhere?
Andrew
200 litre enclosure.
16Hz Port tuning
Twin 4" ports 25.7" long
50% fill
Qa 15.0
Ql 15.0
Group Delay of around 18ms @ 20Hz
I filled in my room dimensions (3x5x4 meters roughly), I also filled in a proposed front baffle size (.762x.559 meters again).
It says I should have in room that is pretty flat from about 50Hz on down to an F3 around 14Hz?! (with 500w of power).
The "Free Air" side says I should have an F3 around 22Hz.
So did I miss something here? Almost seems a little to good to be true for a "smaller" enclosure (for 2 Shiva's) of around 7cu/ft...did I miss something, make an error somewhere?
Andrew
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