Hi everybody, this is my first post here, though I´ve been visiting the forum from some time ago.

Some months ago I tried the lansing plunge and bought a pair of A7s: 828 cabinets, 515-8G woofers, 511B horns, 808 compression drivers and 1631A active crossover w/500hz module.

I do like some things that these speakers do very well: dinamics, huge sound, presence, etc

However, there are other aspects that make them sound like a 1970 movie (that´s what they were intended to ...) and I think that are not up to modern hifi standards, in particular, a shout around 1-2 khz and one-note-bass from 100 hz down

I plan to do all the standard updates: brace the bass cabinet and horn, reduce the vent surface and tune it to 40 hz, damp the 511 horns, try a 800-1200 hz XO, maybe 902-8C drivers ...

And here comes my question.

2 audio buddies have listened to these A7s and suggest a different approach, to build a DIY classic combination, with JBL 2226H woofers and 2426H compression drivers

they have the drivers as a spare and will borrow them for free, and the cabinets will be proffessionally done

The target is to get strong and "flat" 35/40 hz to 16-18 khz, around 95 db sensitivity

the idea is:
3 - 3.5 ft3 reflex cabinet
bass port tuned to 35-40 hz
passive XO around 900-1100 hz
no EQ
this tractrix 350 horn: http://www.horns.pl/tractrix350.html

they are sound engineers and know what they talk about
however, as sound engineers, they have wooden ears (hey folks, if yoy read this, I´m just kidding, no offense here ... )

As I live in a small corner of the world, I can´t listen to the stuff, and have many questions about this project:

My amplifier is a 4 watt SET amp (Fi WE421)
Shall I drive the 2226H with it?

What about GPA 515 LF or 416-B woofers, instead of the 2226?

How will the 2426 driver work with the tractrix 350 horn?
Can I get "flat" 900-18000 kz to 95 db with it?

Right now the 2426 have aftermarket diaphragms
Is there a lot of difference between aftermarket, D8R2425 titanium and D8R2421 aluminium?

For the price of 2421 aluminium diafragms I can buy brand new BMS 4552nd drivers, so what about BMS 4552nd compression drivers against 2426H?

What about the XO point?
maybe 40-900 is too much for the 2226 and 900-18000 too much for the 2246?

Any help and ideas will be appreciated

thank you very much in advance