scoop
Printed From: Speakerplans.com
Category: Plans
Forum Name: Scoops
Forum Description: One scoop or two ;-)
URL: https://forum.speakerplans.com/forum_posts.asp?TID=106826
Printed Date: 30 September 2023 at 7:40pm
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: scoop
Posted By: medi.root
Subject: scoop
Date Posted: 31 January 2022 at 6:46pm
| searching for tha polar bear scoop plann thanks in advance |
Replies:
Posted By: BigSoundNorthWest
Date Posted: 06 February 2022 at 11:58am
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Fairly sure keV from Dub Smugglers saying he created them. Good luck with that. You'd be better off asking him to build you some, or ask Joe at PCH to make u some |
Posted By: turbo7
Date Posted: 06 February 2022 at 12:37pm
| i did once build one polar bear for comparison, it has a long horn but for drivers xmax greater than 10mm the throat is too small and it will suffer from turbulent airflow. |
Posted By: jammin75
Date Posted: 06 February 2022 at 2:09pm
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https://forum.speakerplans.com/polar-bear-scoop-build_topic40313.html" rel="nofollow - https://forum.speakerplans.com/polar-bear-scoop-build_topic40313.html  ------------- feel the vibes !!! "Who Feels it Knows it" Strong like Lion |
Posted By: bob4
Date Posted: 10 February 2022 at 3:39pm
Wrong. Refer to the original polar bear thread linked by "jammin45" to find out who the creator really is
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BigSoundNorthWest wrote:Posted By: toastyghost
Date Posted: 10 February 2022 at 3:58pm
That’s not quite how a horn throat works, at least in theory. It’s not a vent, and the acoustic impedances of the rear chamber and first horn section either side of the throat opening will be much closer than a port meeting free air. The increased compression may push the air into nonlinear behaviour when driven at full chat, but thats more because the pressure at that point might exceed 150 dB as it can in many high power horns, even those for HF. Doing a proper analysis of the Polar Bear has been on my personal project to-do list for a while, but at first glance, a large portion of its clean, flat and powerful sound appears to be due to the fact it's been designed as a good transmission line as well as an efficient horn. Rear loaded horns aka scoops have an even smaller mouth than a FLH of the same dimensions, so the acoustic behaviour typically transitions from horn to quarter wave resonant pipe at the low corner. pfly is the designer and original builder, but I believe both Kev Smuggler and Matt at studio45 in Sheffield are licensed to build them. The plan isn't for general sharing otherwise, as far as I know. |
Posted By: levyte357-
Date Posted: 10 February 2022 at 4:55pm
Pfly, that's him.. ------------- Global Depopulation - Alive and Killing. |
Posted By: BigSoundNorthWest
Date Posted: 31 March 2022 at 8:26am
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My mistake guys, Knew Kev Smugglrr had something to do with em
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