Go Back   Home > Forums > >

Frugel-Horn Mk3 Builds & Build Questions
Frugel-Horn Mk3 Builds & Build Questions
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools
Old 14th January 2021, 06:55 AM   #1541
nandappe is offline nandappe  Japan
diyAudio Member
Join Date: May 2017
My choice , final adjustments.

Minimal sound absorbers.
Dump-duct Area:91cm2(6.5x14cm) , Length:10cm

Click the image to open in full size.

Click the image to open in full size.

My FH mk3 is thunder and storm sounds.
7HD+Frugel Horn - Final adjustment version [ My Final Choice ]---------Damp-Duct (S:91cm2 , L:10cm) - YouTube
  Reply With Quote
Old 14th January 2021, 11:28 AM   #1542
Scottmoose is offline Scottmoose  United Kingdom
diyAudio Member
Scottmoose's Avatar
Join Date: Mar 2005
Location: UK
Originally Posted by alsyd View Post
This is really interesting! Can someone please explain the thinking behind a ‘Damp duct’?
He's changed the internal low-pass choke into a duct to lower tuning. While it does achieve that, it also entails some compromises that haven't been mentioned and are somewhat at odds with the design goals, so it's not something I would recommend to others (while acknowledging that it suits nandappe).

The 2KHz aspect is either another minor difference from measurement setup (no criticism implied -you can get such changes through something as simple as different atmospheric conditions), or possibly from adjusting the damping & killing an internal reflection: the enclosure does not operate that high in terms of producing output, and FH3's damping scheme is designed to be user-adjustable.
www.wodendesign.com (commercial site)
www.frugal-horn.com www.frugal-phile.com (community sites)

Last edited by Scottmoose; 14th January 2021 at 11:31 AM.
  Reply to this post


Frugel-Horn Mk3 Builds & Build QuestionsHide this!Advertise here!
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Frugel-Horn Mk3 planet10 Full Range 1825 27th October 2020 10:35 AM
Frugel-Horn Mk3 flat-paks planet10 Planet 10 hifi 562 27th October 2019 07:25 PM
Frugel-Horn Mk3 Auditions planet10 Full Range 24 8th June 2012 08:18 PM
"straight" frugel horn mk3 mahleriana Full Range 10 15th April 2011 02:28 AM
My Frugel-Horn Build italynstylion Full Range 130 22nd June 2010 01:24 AM

New To Site? Need Help?

All times are GMT. The time now is 04:13 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio