Speakerplans.com Homepage
Forum Home Forum Home > Plans > New Projects Forum
  New Posts New Posts RSS Feed - Bertha BH-882 Build
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Bertha BH-882 Build
 Post Reply Post Reply Page  <1 78910>
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
UpComingSound View Drop Down
Registered User
Registered User


Joined: 21 June 2006
Location: United States
Status: Offline
Points: 393 		Post Options Post Options   Thanks (0) Thanks(0)   Quote UpComingSound Quote  Post ReplyReply Direct Link To This Post Posted: 28 October 2016 at 12:47pm
so the single berthas would not be a good choice for mobile to have 4 of them compared to scoops or some other horn loaded cabinets ?
Back to Top
Lee In Montreal View Drop Down
Registered User
Registered User


Joined: 09 March 2011
Location: Montreal
Status: Offline
Points: 345 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lee In Montreal Quote  Post ReplyReply Direct Link To This Post Posted: 28 October 2016 at 3:11pm
These Bertha's/Levan horns serve a different purpose than scoops. Look at most installations. Berthas + scoops on top for kick and upper bass. I suggest you build one and hear by yourself what you prefer. 

BTW This is a Waldorf on top of the Bertha in the picture, not a JBL 4520.






Edited by Lee In Montreal - 28 October 2016 at 3:18pm
Back to Top
UpComingSound View Drop Down
Registered User
Registered User


Joined: 21 June 2006
Location: United States
Status: Offline
Points: 393 		Post Options Post Options   Thanks (0) Thanks(0)   Quote UpComingSound Quote  Post ReplyReply Direct Link To This Post Posted: 31 October 2016 at 7:56pm
Here go some Berthas outside of met life center I believe DJs were the world famous disco twins from nyc   https://www.youtube.com/watch?v=xkhFbsAdQ0k

Edited by UpComingSound - 31 October 2016 at 8:01pm
Back to Top
parabox View Drop Down
Registered User
Registered User


Joined: 03 February 2017
Status: Offline
Points: 20 		Post Options Post Options   Thanks (0) Thanks(0)   Quote parabox Quote  Post ReplyReply Direct Link To This Post Posted: 26 February 2017 at 7:35am
im somewhat intrested
Back to Top
BP1Fanatic View Drop Down
Registered User
Registered User
Avatar

Joined: 02 August 2009
Location: Columbus, Ohio
Status: Offline
Points: 104 		Post Options Post Options   Thanks (0) Thanks(0)   Quote BP1Fanatic Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2022 at 11:09am
Still a classic thread just like the enclosure!
Back to Top
VECTORDJ View Drop Down
Registered User
Registered User
Avatar

Joined: 11 June 2006
Location: United States
Status: Offline
Points: 493 		Post Options Post Options   Thanks (0) Thanks(0)   Quote VECTORDJ Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2022 at 4:43am
Bertha......A+.
Back to Top
Zitikaz View Drop Down
New Member
New Member


Joined: 28 December 2022
Location: Estland
Status: Offline
Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Zitikaz Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2022 at 10:20am
Hei

HELP NEEDED!

Can someone help me to scale it up a bit, to fit 21LW1400 and simulate it in hornresp?
Plan is to build these monsters with 21" drivers :)
Back to Top
Zitikaz View Drop Down
New Member
New Member


Joined: 28 December 2022
Location: Estland
Status: Offline
Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Zitikaz Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2022 at 10:21am
Originally posted by Lee In Montreal Lee In Montreal wrote:

Originally posted by nomercy82 nomercy82 wrote:

Post pictures when you're done. I'm curious about your design. How does a 1 foot extension of horn length make up for a 3 foot hyperbolic extension?


Like that. With a 36" deep extension, it makes it "theorically" a 21Hz horn once the back chamber and throat size are tuned for a JBL 2242. Without the extension, it is a 27Hz horn for a 1/4 wave. Theorically. ;-)



How was the real results?
Back to Top
VECTORDJ View Drop Down
Registered User
Registered User
Avatar

Joined: 11 June 2006
Location: United States
Status: Offline
Points: 493 		Post Options Post Options   Thanks (0) Thanks(0)   Quote VECTORDJ Quote  Post ReplyReply Direct Link To This Post Posted: 29 December 2022 at 11:43am
Bertha Hints - Make sure all internal Joints are Air tight.....I coated all Joints with Epoxy after building the Horn....A small Air leak will reduce Bass Output.....Make sure to get rear door very tight....The Klipsch Audio Papers has a Paper were Klipsch writes about Air Leaks....I found I like the Sound of two 1/2 Berthas better than one dual 18 Bertha......1/2 Berthas are also a lot less work moving.....VECTORSONICS
Back to Top
APC321 View Drop Down
Young Croc
Young Croc


Joined: 24 August 2013
Location: West Midlands
Status: Offline
Points: 635 		Post Options Post Options   Thanks (0) Thanks(0)   Quote APC321 Quote  Post ReplyReply Direct Link To This Post Posted: 29 December 2022 at 7:51pm
Paradise Garage. Found this photo on facebook today that I had not seen before.
(photo credit: Sun Palace Sound System)


https://scontent.flhr2-3.fna.fbcdn.net/v/t39.30808-6/322395216_8458020110939578_8978909223271305896_n.jpg?_nc_cat=106&ccb=1-7&_nc_sid=730e14&_nc_ohc=ZmHC6Stiv2EAX9UAx7v&_nc_ht=scontent.flhr2-3.fna&oh=00_AfDvYDjwr1_tmokhm-elvEOJnxl5WnFl25umifQaQj3Hag&oe=63B3AC90

Edited by APC321 - 29 December 2022 at 8:09pm
Back to Top
Zitikaz View Drop Down
New Member
New Member


Joined: 28 December 2022
Location: Estland
Status: Offline
Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Zitikaz Quote  Post ReplyReply Direct Link To This Post Posted: 07 January 2023 at 11:29am
Can someone help me to scale up drawings so i can use 21" driver?
Back to Top
Twintub View Drop Down
Registered User
Registered User
Avatar

Joined: 24 April 2016
Status: Offline
Points: 12 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Twintub Quote  Post ReplyReply Direct Link To This Post Posted: 08 January 2023 at 12:14am
21"/18" = 1.1667
Multiply all dimensions by 1.1667Smile
Back to Top
 Post Reply Post Reply Page  <1 78910>

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.188 seconds.