Quote Originally Posted by Tralalalala View Post
I want to build this cabinet , but I am uncertain if it is good enough , since it is a mix of two...
Ideally, at least [2] drawings is required, an original for the purist and a well braced, damped variant for everybody else. At its most basic, internal and external dims will be different unless one chooses to lose some internal cab net volume [Vb] to the added bracing, material thickness to keep the original's outside dims [o.d.]. The 'standard' should have a chart of different vent dims for various tunings [Fb].

Whether either will suit the needs of your app, I can't say since you haven't given any details beyond using them for 604E drivers. Personally, unless I'm sitting on the floor, the driver is much too low to the ground for a Duplex unless the cab is tilted back, which reduces floor loading, changes the floor bounce frequency and generally just doesn't sound right to me with the HF rising up, as opposed to inline or arcing down, as normally occurs in live performances or cinema venues.

GM