Spreadsheet for Folded Horn Layouts...

[Brian Steele]

There's an issue with the DNS servers hosting the my site's domain. I'm looking into it at the moment.

 

[Brian Steele]

Hello, Mr. Steele. I wanted to check the boxplan workbook on your site diysubwoofers.org, but I was unable to open the web page. May I ask you for assistance because maybe I'm doing something wrong. Thanks in advance!

There was a DNS issue with my domain. It should be working now.

 

[horn_power]

There was a DNS issue with my domain. It should be working now.

Hello again!
I tried with Google and Cloudflare DNS

Spoiler: info

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.

Spoiler: 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.

 

[buggers]

Your Domain is not accessible...

 

[frenche95]

what is the difference when you export bp or export th?

 

[Brian Steele]

Hornresp seems to produce slightly different results, based on which model you use. I don't know which is the more accurate one, but I'd speculate it's the TH model.

 

[BP1Fanatic]

Compare a straight flare tapped horn to a series tuned 6th order bandpass enclosure with the same volumes and tuning to find out.

 

[David McBean]

Hornresp seems to produce slightly different results, based on which model you use.

The band pass models include end corrections.

 

[BP1Fanatic]

Here is a straight flare tapped horn (tapped quarter wave pipe/tube) versus a BP6 series.

 

[1hiep0]

Brian , how about a spreadsheet for
hyper bass reflex as seen here ?
https://sites.google.com/site/speak...ass-reflex-type-enclousures-for-single-driver
https://www.diyaudio.com/community/threads/whazza-hyper-bass-reflex.334175/#post-7017239

 

[Brian Steele]

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).

 

[1hiep0]

I don't have a slight idea, it's sure look similar to mltl (one of my favorite alignments) you had. I am planning for a 10". Thanks

 

[frenche95]

Hornresp seems to produce slightly different results, based on which model you use. I don't know which is the more accurate one, but I'd speculate it's the TH model.

What about export (ph1)? Does that mean with the woofer flipped the other way?

 

[frenche95]

What about export (ph1)? Does that mean with the woofer flipped the other way?

I am getting completely different results when comparing the 2

 

[Brian Steele]

Which of the BOXPLAN workbooks are you referring to? There are a few that provide the opportunity to model a specific enclosure two or more different ways in Hornresp.

 

[frenche95]

Using the parac box plan I get a frequency response of 25hz to 75hz when exporting bp and I get

 

[frenche95]

Sorry I meant I get that when exporting th And I get 52 thru 125 when exporting ph

 

[BP1Fanatic]

Well, the goal SHOULD be 25hz versus 52hz for a SUBwoofer.

 

[frenche95]

Well, the goal SHOULD be 25hz versus 52hz for a SUBwoofer.

I know what the goal should be that has nothing to do with the question at hand.

 

[frenche95]

I know what the goal should be that has nothing to do with the question at hand.

We were discussing how there are 2 different results in hornresp when modeling but they are coming from the same box plan. Me personally for this build I’m really trying to get down to 20hz up to 70 but I’ll likely end up settling for 22 or 23 hz up to 65 in order to keep it musical.