Sonido BIB - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

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
Reply
 
Thread Tools Search this Thread
Old 10th February 2008, 06:22 PM   #1
diyAudio Member
 
Join Date: Jan 2006
Location: Cz Rep.
Default Sonido BIB

After one year, they're finally finished. I have build two pairs of BIB's with Monacor SPH60 before and had some issues with too much mids coming out of the mouth. I decided to give them one more chance with different drivers.
These Sonido boxes predates the formula given by GM, so don't know if GM's would be different, but doubt it!

These Sonido's are much better in the mids and treble than Monacor's. And despite they're bigger the sweetspot is much larger, probably due to the phase plug.
  Reply With Quote
Old 10th February 2008, 06:30 PM   #2
diyAudio Member
 
Join Date: Jan 2006
Location: Cz Rep.
I will be careful about my opinions about the drivers until I have more hours on them. Not to say my ears also. After building speakers x years, I've learned when putting blood, sweat and tears on the the boxes, it HAS to sound good.
Attached Images
File Type: jpg bib 001.jpg (63.7 KB, 2471 views)
  Reply With Quote
Old 10th February 2008, 07:04 PM   #3
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Well, they look good to me Peter.
__________________
Community sites www.frugal-horn.com http://frugal-phile.com/
  Reply With Quote
Old 10th February 2008, 07:17 PM   #4
diyAudio Member
 
Join Date: Jan 2006
Location: Cz Rep.
The problem with mids are not so prominent as the old BIB's but still there. I have done extensive tests regarding damping and now I have the only option to put felt on the last half of pipe and see what's happening. Personally I don't expect any major change. This is a major flaw in the box which I can't accept.

I don't have measurments of this BUT a single pillow over the mouth solves the problem so no doubt about the problem.

My two microphones (read ears) tells me there are high output up to ~1100 hertz which disqualifies the box as a speaker.

I don't want one Ibanez guitar emitting sound out of phase at two places.
Now you wonder why this idiot write this? Because I'm stubborn and in my ignorance I expected to solve this problem, no way I say. Also, I don't listen so often over 85-90 db where it isn't much of a problem. You hear it more prominent over these levels.

Bang for the buck, yes, but not in the long run!
Be careful with anything emitting over 500 Hz in the ports/mouths


Peter
Attached Images
File Type: jpg bib damping 002.jpg (64.9 KB, 2030 views)
  Reply With Quote
Old 10th February 2008, 07:47 PM   #5
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
They shouldn't have anything over ~300Hz coming out of the terminus. If they have, something's not right.
__________________
Community sites www.frugal-horn.com http://frugal-phile.com/
  Reply With Quote
Old 10th February 2008, 07:54 PM   #6
diyAudio Member
 
Join Date: Jan 2006
Location: Cz Rep.
Quote:
Originally posted by Scottmoose
Well, they look good to me Peter.
Thanks Scott, next build will be the drawing from Istvan Vargas, founder of Sonido.
BTW, I have a feeling that Monacor kill the Sonido in the bass. Could it be the "swamping ratio" of the vas, is higher in the Monacor build/qts difference?
  Reply With Quote
Old 10th February 2008, 09:04 PM   #7
diyAudio Member
 
Join Date: Jan 2006
Location: Cz Rep.
That'll be the gremlins then. They haunt the electronic waves, dressed as hippos in small green furry hats, and cause untold trouble, particularly to those who frequent audio boards. True you know. Every word. By the way, custard is made from gelignite.

178 BIB.

Line 128in
Zdriver 26.5in
Sl=76.375in^2

Scottmoose has attached this image:
Click the thumbnail to see the original image.




__________________
'When I was Controller, I had an excellent secretary. Whenever I asked for facts, he asked me what it was I wanted to prove! There is no doubt that facts can be most misleading.'

Admiral of the Fleet Sir John Fisher, First Baron of Kilverstone.


Last edited by Scottmoose on 10-11-2006 at 08:09 PM

These are the dims, and damping as follows:

Acousta above driver, hard in beguinning, looser down to driver, 8mm BAF behind driver + Acousta at the sides of driver. 3mm wool carpet at three sides down to bend. This has been tested to the extreme, does not get better than this.

Peter
  Reply With Quote
Old 11th February 2008, 03:49 PM   #8
diyAudio Member
 
Godzilla's Avatar
 
Join Date: Nov 2005
Location: New York
The speakers look beautiful. Try stuffing the speaker differently to get rid of the the higher frequencies coming from the mouth of the BIB.

http://www.zillaspeak.com/bib-howtobuild.asp

Enjoy!
Godzilla
  Reply With Quote
Old 11th February 2008, 04:22 PM   #9
diyAudio Member
 
Join Date: Jan 2006
Location: Cz Rep.
Thanks Godzilla!
Right now I'm really tired due to my daily work, so I will leave them as they are for the moment.

I've put in quite a lot of work on this pair. 38 wooden plugs are used in each speaker + silicon sealing on inside joints.

The only contact the black baffel have with the box, is two screws,
+a layer of duct seal take care of the remaining contact.
This was a test to see if the panel vibrations around the mouth disappear. My old BIB's have the same panel thickness and are also smaller. It seems to work, as vibrations are less on the duct sealed ones, but I would like to go even further and have the baffel screwed with a rubber bolt. We'll see about that later, maybe.
  Reply With Quote
Old 11th February 2008, 07:05 PM   #10
diyAudio Member
 
Join Date: Feb 2004
Location: Appleton, WI
Maybe it's just me but the felt pennant tweak has brought me more satisfaction with the BIB for 127e than I had at the beginning of listening to the BIB.

My interior treatments are stuffed peak, fiberfill on the bottom
and the pennant.

Also suggest that this be brought into the main BIB thread.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Interesting BLH From Sonido Of Hungary thetubeguy1954 Full Range 34 15th April 2012 07:57 AM
new Sonido SWR200A-8 Zen Mod Full Range 67 26th November 2009 07:24 AM


New To Site? Need Help?

All times are GMT. The time now is 09:44 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2