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improving bass on Cornwall II ?

I should probably check all the drivers to verify what's in there. Maybe a previous owner did some experimenting.
 
Well, I guess that explains this whole thread...

Can I build the correct crossovers? Or modify these so they're correct?

Who sells parts for these things?

Thanks!
 
I just compared the 2x schems geoff.27 posted, and it appears I can't reuse any of the transformers, may as well build a whole new unit.
 
You can get the parts from Parts Express or mouser; if you’re not confident in picking them yourself, Crites Speakers sells kits, or will rebuild them for you, as will @Deang
 
For about $100 bucks worth of parts from Solen you could make ALK Universal clones with 0,-3,-6,-9, -12 settings. You would need a 33uF for 600 hz.

The -9 would probably be perfect in those cabinets, assuming it was just the crossovers that were changed out. The ALK has a nicer tweeter filter too.

-8 is the stock Cornwall 2 autoformer value, your B crossovers should be -6.
 
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geoff.27 said:
For about $100 bucks worth of parts from Solen you could make ALK Universal clones with 0,-3,-6,-9, -12 setttings.

The -9 would probably be perfect in those cabinets, assuming it was just the crossovers that were changed out. The ALK has a nicer tweeter filter too.

-8 is the stock Cornwall 2 autoformer value, your B crossovers should be -6.
Click to expand...

Thank you! Yes that sounds like a good option. The mid & tweeter are plastic, front flush mounted so I assume they are stock parts
 
Really? Solens on Klipsch? I'll trust that everybody else (but me) knows Al did the work right, but do friends let friends do that? Seems Dean has to bite his tongue both directions right now, it just raised the hair on my neck reading that. Like VOTT's playing metal off a Crown or a chainsaw to your forehead. If that's cool, thanks to @geoff.27 for the education.
 
I found a set of Cornwall II networks for him on eBay for $250. It’s a good deal since the autoformers are practically unobtanium unless I have them wound. The ferrite bobbins are also graded for tight tolerance, and while they don’t look like much, they are good parts - especially since they are the right parts for the circuit.

My agreement with Roy is stock networks for stock speakers. Once someone starts switching drivers, what’s the point in a stock network? I do like the AL-3/AK-3 for the SMAHL, since I think the steeper slope tweeter filter will cool that top off a bit. A person can go either way at this point - the Universal works too.

I build the Universal mostly for people who are deep into mods. The way I’m currently building it is pretty expensive. That was the major point of contention between Al and me when I was building them for him. He wanted to go with the economy/cheap concept, which I refuse to build. John Warren’s network it better, but it’s hard to find the time to prototype it. Also, some of the parts are hard to source.

Anyway, the OP should at least have an opportunity to hear his Cornrwalls in their original form. Not everyone likes mods. You’d be surprised at how many people just like them how they are.
 
...or,

you could get a brand new pair of Crites boards with the "correct" polyester(mylar) caps to keep the original sound

that board would come with the 3636 autoformer that could be used in an ALK Universal clone down the road if and when you want to build it "correct".
 
geoff.27 said:
...or,

you could get a brand new pair of Crites boards with the "correct" polyester(mylar) caps to keep the original sound.
Click to expand...
Crites uses sonicap and dayton as far as I know. Pretty sure both are polypropylene and not mylar.

JEM is the source for the caps that the klipsch gods bless….
 
I guess you’re not following the autoformer thread? The coils aren’t the same either. The bobbins aren’t graded and the steel for the laminations for both the autoformer and the low pass coil are different. Also, all of the Klipsch parts are wax infused.
 
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Don’t understand the coil choices except to make it as inexpensive as possible. Might as well drop the zeners, which are somewhat dated. Even PK green lighted dumping them. Smart business move though.
 
Deang said:
I build the Universal mostly for people who are deep into mods. The way I’m currently building it is pretty expensive. That was the major point of contention between Al and me when I was building them for him. He wanted to go with the economy/cheap concept, which I refuse to build. John Warren’s network it better, but it’s hard to find the time to prototype it. Also, some of the parts are hard to source.
Click to expand...

Dean has seen many more iterations of the universal over the years, than I have. However, the universal is a great crossover even if you don’t use the boutique parts that some use. There are sonic differences depending on the cap used. Sometime these differences are subtle, sometimes they are more pronounced. I recently changed out caps on my universals and the sound difference is definitely there. I prefer a more laid back presentation when I choose my caps.
 
The ALK’s are light years better than the stock Klipsch crossovers. I put a set in my Cornwalls and the improvement was dramatic.
 
Mostly just different. Many drop the midrange down too far, which gives the impression of more bass, and you can jack on the volume pretty good without the K 400 drilling a hole in your head. The Klipsch networks are rather unforgiving in that regard. But if you listen at reasonable volume levels, I think they hang pretty good with the Universal. The Klipsch sound is a live sound, and there is some bark and a little bite.
 
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