[Dilbert]

You could build a pair.

[vegasdave]

No way! I have no idea where to start!

[Dilbert]

No way! I have no idea where to start!

Well, here is a plan for the 4345. 
http://www.audioheritage.org/vbulletin/showthread.php?t=11856

[rmurray]

Hello to JBL fans . Does anyone have the old Ti series models(the one that ran the titanium tweeters) I have been amazed at the potential that has been brought out by my 4B ST. Looking forward to the 4B squared ............  rmurray.

[vegasdave]

No way! I have no idea where to start!

Well, here is a plan for the 4345. 
http://www.audioheritage.org/vbulletin/showthread.php?t=11856

No way man! 

[rmurray]

I think in oldspeak hi- fi  ( circa, 1967).Start at the woofer  level and, like jbl genius, you add the the other transducers as need by  audio physics. Somehow I think Bryston has  never forgotten the basics .. ( this is only me )  Anyway,  there are many great designs out there and we must keep an open mind to new developments . For all I can tell , JBL and my Brystons are are truelly sonic match..Thanks for reading fellow members....rmurray.

[vegasdave]

Which model of JBLs do you have?

[rmurray]

I have had the Ti 120 since 1988. They use a 12 " woofer and the same mid and hi as the Ti 250. I have done alot of tweeking to the inclosures and also biult concrete stands. This series was out the same time as the last L sreies and was an effort towards greater finesse while still retaining the JBL idea of design. Like I said , they have become greater than I ever thought thanks to the Brystons.......  rmurray.

[vegasdave]

Cool. Those old JBLs are worth money, and they sound great too.