Zaph waveguide TMM rebuilt

[Animalnisse]

Hello folks,

This is a proto of a Zaph tmm taken to the extreme.

The goal is to create a speakerbox with virtually no resonanses.

Some pic:

[Animalnisse]

This is my idea of a resonant free baffle.

But im not quite sure what to fill it with.

Suggestions or ideas anyone?

[badman]

Looks like a very dead baffle. Make sure it doesn't constrict the backwave and you should be golden.

[69stingray]

I would fill with some sort of medium density foam product. If the MDF flexes at all, the foam should absorb/dampen the flexing as opposed to passing it on to the next piece.

[tinitus]

Its nice

BUT drivers take up so much space that there will be little left to concrete to maka any difference, waste of time

BUT you could mould the rest of cabinet in concrete

MAKE the front baffle more sculptural, that will work

AND an easy and effective way to dampen the front is to mount a sandbag on the inside - I discouvered it years ago, it really works because its DYNAMIC dampening

Try an experiment and mount a squared sandbag - knock on the plate and you will be surprised, its dead

[Animalnisse]

Yeah, with a thickness on over 2 1/2" its hard to make a 45deg. routing in the baffleback. So there is a challenge.

The layaout seems ok?
Any resonant errors i've made?

[Animalnisse]

Yeah, i see, but im going to make such an effort into this projekt that the time it takes to make and fill the decribed front dont do me any harm.

[Animalnisse]

Originally posted by 69stingray
I would fill with some sort of medium density foam product. If the MDF flexes at all, the foam should absorb/dampen the flexing as opposed to passing it on to the next piece.

Do you really think such a light product will add any damping at all in this construktion?
For examle the thin inner plate on the front would need some serious suppport not to, as you say, flex.
Thus; the sand...

[planet10]

Originally posted by Animalnisse
The layaout seems ok? Any resonant errors i've made?

Is that vertical brace down the middle? or offset? It would be much more effective if it divided the panels into 2 unequal trapezoids instead of 2 rectangles.

dave

[planet10]

Originally posted by 69stingray
If the MDF flexes at all,

I'd avoid using MDF...

dave