Front horn loaded bass reflex

[panos29]

O.k after alot of reading in the literature and endless seraching and reading of old posts here, I decided to get started with a new project I got in my mind for a long time now.

So here it is, I was thinking of a loudspeaker design of a box around 50cm width 60-70cm height and 50-60cm depth, containing a woofer 12 or 15 inch loaded at the back with bass reflex(tuned at around 30-40Hz with chamber volume roughly 70 liters) and in the front with a horm with a cutoff around 130-200Hz. At the top of this there will be mounted a sectoral horn 811b with a compression driver (808-8b).

This project, silly at it seems will be my next project and I would like to ask for any proposals on a woofer candidate, preferably old alnico stuff or whatever JBL or even altec. Any help would be very appreciated!

[paragon]

A 4560 clone ?

[panos29]

Forget my ignorance but I am not very familiar with model numbers yet, but I will check this out later. To give a rough idea I have found 2 similar systems but alot bigger than what I had in mind though the general idea is the same, note that idea 2 is locally manufactured but did not yet had the chance to hear it.

[Zilch]

Greek design is "organic."

[panos29]

Yep, correct! very organic! LoL, so this is made of carbon fiber , containing an altec 515b and a TAD4002 on top. Notice the funny color!

[panos29]

So, any hint of the "right" woofer for this application I am talking about? I would also like to ask what are the desirable woofer parameters to look for ? I mean do I need a modern woofer that can perform well in comparatively small enclosure(but do not have the nice HF responce) or do I need an old type woofer with with very small Qts suitable for horn loading?
Please give me a hint so I can start the search or at least an answer suggesting that something like that is undoable so to abandon this and take a different path (suggest one!). I am open to any ideas for experimentation!

Thanks in advance,

Panos