[Network type B VS B2]

I've searched: network AND type AND B AND B2 and ended up with 800 pages to go through.  Any ideas how I should search for it?  See, I'm going to replace caps....  but should I stay with B or upgrade to B2?  I've read people returning to B but the post are from 2002 and no reason was given why.  What does the 20uF do?  Raise the 400K to 600K?  Or cut sub-woofer,  <20K, to remove distortion?   Yay.... I'm a newbee....

 

[Network type B VS B2]

The b2 has a 20uF across the woofer inputs.  A 3uF instead of a 4uF for the squawker.  A 245uH inductor on the tweeter inputs.  And the squawker and tweeter are not in phase with the woofer.

 

Questions: has anyone listened to both, with new caps, and could tell a difference?  The reason for this question is some threads show people buying type B and/or rebuild Bs but not B2s.

[Cornwall Tweeter Change from CW I to II?]

Thank you...  Time to do some soldering...  : )

[Cornwall Tweeter Change from CW I to II?]

Question 1: what network type was used in the CW2s?

 

I recently required a set of CW1s and wish to keep the drivers, k33e (square), k55v, and k77m (square).  My CW1s have type B network. 

 

Question 2: is the type B2 the last evolution of the network for my drivers?

 

 

[Cornwall mfg year?]

Thanks you.  Being a poor dirt farmer, I'll do the diaphragms....  I've been reading a lot of forums and the oil can is wet on the tweeter  2uF on the, network type B, crossover.  I think that the oil leak is the first thing I should fix....  :  )   Question: is there a preference replacement to this leaking can?  There are a lot of difference name brands.

[Cornwall mfg year?]

Thanks....  Can the k77m voice coils be replaced?  The tweeters are fried...  : (

 

[Cornwall mfg year?]

Just got this.  Tweeters are out...  If W is 1981, then, 'U', is 1979?  Going to check tweeters tomorrow....    Maybe crossover is out....

 

KLIPSCH CORNWALL CBR IS    model number 26U360    

inspected     Ron Elinore?
tested        Tery Willis?        Copy Right? 1980

woofer        K33E square    40225            cone 3480

mid               K-55-V         190448 R

tweeter       K-77-M     14 824-0137        046

crossover    two transforms, one has # 2133
        two AEROVOX  
        P49G1004E01 4uF 8045 100V 60Hz protected A2.5 AFC  NO PCB’s    
        P49G1002E01 2uF 8040  NOT PROTECTED  NO PCB’s

Thank you for any info....  and or suggestions on tweeter revival....  ; )