Converting dipoles, help needed

[Mayday]

Hi,
I'm considering converting the woofers in my dipoles to boxed. Vented or closed, not sure what would work best?

The woofers are Dayton 15" IB.

Reason for considering this is that my fiance is pregnant with our first baby and I need to make them more child-proof, I need to limit the number of active parts in the audio system.

If I were to convert the woofers to some boxed design, I wouldn't need the active filter and I could use one power amp less.

Any help is greatly appreciated.
Thanks

 

[AllenB]

It's hard to go wrong with a closed box. Box construction will probably be the main concern, as a monopole in general is easy to work with at low frequencies.

 

[sreten]

Hi,

Why do you lose an active filter and one power amplifier ?

rgds,sreten.

 

[Juhazi]

I suppose that the speaker is a two-way with 15" and some 3-4" fullrange? The efficiency of a boxed driver is much higher than a dipole with correction for dipole loss. Problems ahead!

 

[Mayday]

Hi and thanks for all quick replies 🙂

The dipoles are in two parts, stacked on top of eachother.
Woofers in H-baffles and the "tops" are regular open baffles.

Tops, passive crossover with foil inductors & NOS PIO caps:
B&G NEO8
Dayton 7" Reference

Woofers, active crossover via DCX2496 with compensation:
Dayton 15"IB

I was thinking that with the woofers boxed I could get rid of the compensation and thus the active crossover.

This would mean that I could use just one poweramp.

I built the speakers over 6 years ago and struck gold as this was my first speaker build and they sound amazing IMHO.

Using an online calc, I've forgotten all about speaker design that I read all those years ago, gave a closed box volume of about 1700L (?!?).

 

[Face]

Those woofers are optimized for IB, not any kind of enclosure. I would sell them and buy more appropriate woofer...or build reasonable sized sealed enclosures and use either EQ or Linkwitz transform.