Skip to main content
Please consider registering
Forum Scope


Forum Options

Minimum search word length is 3 characters - maximum search word length is 84 characters
Register Lost password?
sp_Feed sp_TopicIcon
clarification on BDA construction drawings
sp_NewTopic Add Topic
Forum Posts: 5
Member Since:
February 3, 2022
sp_UserOfflineSmall Offline
February 11, 2022 - 8:43 am
sp_Permalink sp_Print sp_QuotePost

Is it perforated or unperforated hardboard in the BDA?
The drawing description states ‘Pegboard’, but the graphic shows a solid unperforated hardboard.
Elsewhere Dennis has stated “… it’s a sealed unit so we don’t have any slits, we don’t
have any holes.” (Sound waves vs Sound rays), but I thought this was referring to the sealed nature of the cabinet.

Chief Acoustics Engineer
Forum Posts: 614
Member Since:
August 12, 2013
sp_UserOfflineSmall Offline
February 14, 2022 - 6:57 am
sp_Permalink sp_Print sp_QuotePost

With the BDA build you are building a perforated absorber and inserting it inside a diaphragmatic absorber . With a perforated absorber , you must have air flow. Pegboard in the states will provide the density required for the front wall”membrane” with holes that are 1/4″ in diameter and 1″ on center.

Forum Timezone: America/Los_Angeles
Most Users Ever Online: 158
Currently Online:
Guest(s) 4
Currently Browsing this Page:
1 Guest(s)
Forum Stats:
Groups: 4
Forums: 10
Topics: 595
Posts: 1603


Member Stats:
Guest Posters: 30
Members: 18349
Moderators: 0
Admins: 2
Administrators: admin, Dennis Foley