Summer Project - Replication of MBL loudspeaker 101mkII - Page 4 - diyAudio
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Old 4th July 2012, 10:17 AM   #31
Baldin is offline Baldin  Denmark
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Man, that is work of art

On the speaker to the left ... what is the middle round thingy ....
More pictures please

Kind regards Baldin
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Old 4th July 2012, 11:17 AM   #32
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Quote:
Originally Posted by Baldin View Post
Man, that is work of art

On the speaker to the left ... what is the middle round thingy ....
More pictures please

Kind regards Baldin
Just letting you know this clone is not mine. It is Areczek's
My MBL 101E replicas
The round thing is just being used to hold up the unfinished speaker.It is missing the big aluminum lower-mid-range driver other than that they are both completed. I will agree they look exactly like the real thing and I have heard they play like it too.
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Old 27th July 2012, 09:23 PM   #33
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Default Tweeter and Mid-Range Model

Tweeter and Mid-Range Model showing the bare construction. Lamella dimensions and cooking process have been realized. Next step is to make a model using a pre-existing driver with a native 50mm diameter voice-coil and modifying it to make a mbl Mid.
Attached Images
File Type: png Mid-Range.png (67.0 KB, 291 views)
File Type: png Tweeter 1.png (127.8 KB, 284 views)

Last edited by Magnasanti; 27th July 2012 at 09:33 PM.
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Old 5th August 2012, 03:39 AM   #34
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Driver has been chosen as the Dayton Audio RS52AN. This is a Dome mid-range witch have inherently large voice-coils for their size. In this case it fits one of the many requirements e.g. a 50mm voice-coil.

Attached Images
File Type: jpg 285-020_s.jpg (7.8 KB, 228 views)
File Type: jpg 285-020_si.jpg (8.7 KB, 212 views)
File Type: jpg 285-020_sii.jpg (11.0 KB, 212 views)
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Old 5th August 2012, 10:17 AM   #35
el`Ol is offline el`Ol  Germany
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I think all that would be easier if you slaughtered DC Gold drivers (spiderless design fullrange drivers).
http://dcgold.com/
An interesting material for the lamellas (unfortunately only available in the US):
http://www.taskboard.com/

Last edited by el`Ol; 5th August 2012 at 10:22 AM.
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Old 5th August 2012, 06:54 PM   #36
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Quote:
Originally Posted by el`Ol View Post
I think all that would be easier if you slaughtered DC Gold drivers (spiderless design fullrange drivers).
DC Gold Audio :: Home
An interesting material for the lamellas (unfortunately only available in the US):
Task Board, Model Making Cardboard
I don't know they look pretty expensive the Dayton is also spider less, has a 50mm voice-coil, is relatively affordable, and can be dismantled without damage. This driver isn't for the final production run. It is merely experimental to test different variables in carbon fiber etc. I wouldnt say thats at all an interesting material for the lamellas. Maybe if you were making a visual only copy.
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Old 6th August 2012, 08:22 AM   #37
el`Ol is offline el`Ol  Germany
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I see no reason for doing a 1:1 copy sonic-wise. I like the concept, but to my ears the MBL implementation is not mature yet.
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Old 6th August 2012, 10:11 AM   #38
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I have always wanted to ask.. Are the lamellas driven from both ends? (eg Push/Push)

What would be the advantages/disadvantages of doing this? (eg raised sensitivity vs cancellation?

Dean
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Old 7th August 2012, 05:45 AM   #39
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Quote:
Originally Posted by thunk303 View Post
I have always wanted to ask.. Are the lamellas driven from both ends? (eg Push/Push)

What would be the advantages/disadvantages of doing this? (eg raised sensitivity vs cancellation?

Dean
No mbl does not use a push push configuration. I would guess it would increase sensitivity. I don't think they would cancel since they are not out of phase.
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Old 7th August 2012, 05:49 PM   #40
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I would have thought that a spider is mandatory for this driver, no?

How else will it not rock and become un-centered in the gap, and rub??
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