Spreadsheet for Folded Horn Layouts...

There was a DNS issue with my domain. It should be working now.
Hello again!
I tried with Google and Cloudflare DNS

C:\Windows\System32>nslookup diysubwoofers.org 8.8.8.8
Server: dns.google
Address: 8.8.8.8

*** dns.google can't find diysubwoofers.org: Server failed

C:\Windows\System32>nslookup diysubwoofers.org 1.1.1.1
Server: one.one.one.one
Address: 1.1.1.1

*** one.one.one.one can't find diysubwoofers.org: Server failed


and with online checkers, but maybe it will need some time to refresh the info.
Using domain server:
Name:
127.0.0.1

Address:
127.0.0.1#53
Aliases:

Host diysubwoofers.org not found: 2(SERVFAIL)
Thank you for your time, I will check again tomorrow.
 
Here is a straight flare tapped horn (tapped quarter wave pipe/tube) versus a BP6 series.

TQWP vs BP6S.jpg
 
Looks like I can create a spreadsheet for it relatively quickly. However, what's the value of such an alignment? The box size is the same as a vented box for the same driver, so efficiency at low frequencies will be similar, and the arrangement looks like it's going to produce aberrations in the passband due to harmonic resonances. The Hornresp model also doesn't appear to be accurate as it could be (it should be modeled as a no-chamber OD design in Horresp, IMO).