Cornwall IV

[Pete Mote]

2 hours ago, MookieStl said:

I'd make furn of you, but I have 2 pair of La Scala's, 2 pair of Belle's, 2 pair of Heresy's, RB61's and a few others scattered around.

 

Next on the platter is a pair of Jube's! Then I can RIP.

[pzannucci]

19 hours ago, MookieStl said:

I wake up every morning hoping to find speakers like these sitting in my driveway!

And I don't even have a driveway!

I would say that you are starting to have too many speakers, but that't just nonsense talk around here.

Enjoy!

 

19 hours ago, MookieStl said:

20 hours ago, Pete Mote said:

Woke up this morning to find  this is the front driveway, special delivery from Hope, Arkansas. Who doesn't need a little Hope is this day and age?.  KCIV's and  KFIII's,  in Black Ash  and Ebony,  respectively.   I will be doing a  Heresy IV comparison, even though I know the answer already. 

I wake up every morning hoping to find speakers like these sitting in my driveway!

And I don't even have a driveway!

I would say that you are starting to have too many speakers, but that't just nonsense talk around here.

Enjoy!

That is just terrible.  Just terrible it wasn't my driveway.  😁

[glens]

On 4/20/2020 at 12:28 PM, Pete Mote said:

Woke up this morning to find  this is the front driveway, special delivery from Hope, Arkansas. Who doesn't need a little Hope is this day and age?.  KCIV's and  KFIII's,  in Black Ash  and Ebony,  respectively.   I will be doing a  Heresy IV comparison, even though I know the answer already. 

 

I guess it's not just any neighborhood you can do that in.  (Wake up to find that stuff still in the driveway.)

 

At first I thought that was couple of guitar cases leaning against the speakers, but thought they looked a little blocky.  Turning my phone and looking closer revealed they aren't blocky at all; they're bricky...

 

I look forward to a full report.

[mustang_flht]

 

The CWIV filter that I put on page 14 is a Rev A, this one is a Rev B, so it seems to me that this is an evolution of CWIV

 

[mustang_flht]

On 1/12/2020 at 2:19 PM, mustang_flht said:

I believe someone asked to see the CW4 filter: here it is

 

 

 

You can send me 💙

 

 

 

here is Rev A

[CANT]

[mustang_flht]

Heresy IV uses the same network scheme, but certainly not the same values

 

 

 

[Paducah Home Theater]

my stash of black ash.  I will have that many in cherry and also that many in walnut here in a day or two.  

 

 

[geoff.]

...anyone else just get weak in the knees?

[DJEditor]

I just got notice my Heresy IVs shipped, so it seems the Heritage line is in production.

[mustang_flht]

On 4/24/2020 at 6:50 AM, CANT said:

 

On 4/22/2020 at 1:57 PM, mustang_flht said:

 

The CWIV filter that I put on page 14 is a Rev A, this one is a Rev B, so it seems to me that this is an evolution of CWIV

 

 

Hi @dls_123

 

On your recent version of CWIV there will certainly be network B. Look at the diagram of version B,  @CANT has read the capacitor values for you 👍😎

 

It is not obligatory to change the values to //, so change in priority 7µF, 2.75 and 2.25µF 

 

For the resistors, I think it's 8 and 30ohms, look at the diagram of CANT, only 30ohms and in series on the signal!

[The Dude]

I would like to see how the signal reacts when removing the "bi wire" strap.  Also, both a and b look the same minus the tape around the inductors.  Not sure what I am missing here, maybe a cap value I can not see?

[jimjimbo]

2 hours ago, The Dude said:

I would like to see how the signal reacts when removing the "bi wire" strap.

 

How would it be any different?

[PrestonTom]

1 hour ago, dls_123 said:

Yes, saw the schematic, I guess I have to wait for speakers to arrive so I can pull the woofer and be certain which version crossover.  The schematic does make it clear the small caps are the important ones.   I will put Mills or other nice wirewounds in for the resistors, but again I guess I wait and see.   I can use VCap ODAM for the caps as I am an OEM because I build tube amps for a living and get good prices from Chris.  He will pull caps for me that are very close to those values and certainly within the 5% spec Klipsch uses.  I will probably put damping material on the horns too just because I can.  They will see only tubes in front of them so should sound very nice.

 

Just curious, are you serious about tinkering with a new crossover on a new cabinet?

[Dave A]

8 minutes ago, PrestonTom said:

 

Just curious, are you serious about tinkering with a new crossover on a new cabinet?

I wondered about that too. Those new CF4's are a tightly integrated system and I for one would never second guess what Roy has done. I am thinking if I was not happy with them I would start looking at pro line speakers. I understand the fun of experimenting but not on something like CW4's

[Shakeydeal]

I have upgraded the crossovers on khorns and cornscalas in the past. But I don't feel any desire to monkey with the CW IV. I think Roy nailed this one down pretty good.

[Chief bonehead]

Good luck. 

[dls_123]

4 hours ago, Chief bonehead said:

Good luck. 

Thanks.  It is not a knock on the speaker and I will listen to it first for 100+ hours.   I build things for a living, so I am experimenting.  Certainly I am not going to change the crossover circuit at all because that has been worked out by the designer for the drivers used.

[mustang_flht]

 

 

Hi @dls_123,

 

Chef Bonehead is the designer 😎

[Edgar]

2 hours ago, mustang_flht said:

Chef Bonehead is the designer 😎

 

Years ago, in a Usenet newsgroup, I witnessed a hilarious argument about psychoacoustics. "Person A" would say something, and "Person B" would respond that no, that's not how it works. The argument grew increasingly heated until finally Person A said to Person B, "You don't know what you're talking about. Here, read these papers to educate yourself and then write back." He then cited a number of AES and IEEE papers.

 

What Person A didn't know was that Person B was "JJ" Johnston, of Bell Labs ... the author of the very papers that Person A cited.