Suggestions for aluminium ribbon damping? - Page 9

a.wayne · 22nd November 2012, 03:14 PM

Are you using neo or ceramic ....?

Paul W · 22nd November 2012, 03:24 PM

Neo, N42 or N50...don't remember.

HellMan · 22nd November 2012, 03:26 PM

Thanx a bunch guys!!

Neos here too...

dacen · 22nd November 2012, 05:16 PM

I have used ordinary ceramic magnets for both MR/T ribbon and the bass membrane. For the MR/T I have used 20 mm X 40mm, thickness 10mm. The magnet gap is around 23mm.
I have no problem with the sensivity on this one. On the bass panel I have used 25 mm X 40 mm, thickness 10mm. On some recordings I have sometimes wanted the sensivity on the bass membrane to be a little higher, but for normal listening it is OK. Neo´s are a very good choice here. I am using separate amplification for the two.

DeltaStar · 23rd November 2012, 02:08 AM

Does the strength of the magnet, say N42 versus N50 make cause for more room between ribbon and magnet?

a.wayne · 23rd November 2012, 03:37 PM

Quote:

Originally Posted by dacen

I have used ordinary ceramic magnets for both MR/T ribbon and the bass membrane. For the MR/T I have used 20 mm X 40mm, thickness 10mm. The magnet gap is around 23mm.
I have no problem with the sensivity on this one. On the bass panel I have used 25 mm X 40 mm, thickness 10mm. On some recordings I have sometimes wanted the sensivity on the bass membrane to be a little higher, but for normal listening it is OK. Neo´s are a very good choice here. I am using separate amplification for the two.

With ceramic's difficult to get sensitivity over 80db/m/2.83v

dacen · 23rd November 2012, 08:51 PM

Compared to the quality of sound these speakers produce the sensivity is a very minor issue. They produce an outstanding sound, so I will encourage others with DIY skills to go for it.

a.wayne · 24th November 2012, 04:14 PM

Neo's are way too costly unless you are building a small ribbon , so i would like to focus on improving efficiency with ceramics as best as possible , motor design etc ..

a.wayne · 26th November 2012, 12:01 AM

I guess no interest .....!!!!!

hanski · 27th November 2012, 08:43 PM

About the magnet gluing.
My 25mm wide magnets stay well without glue. Only the two last magnets on the line repel each other so much that it causes 2mm gap.

I have also the tweeter ribbon with 10mm wide magnets. I did glue them but wouldn't do again. Gluing 400 pcs. magnets is not the most satisfying job.

22nd November 2012, 03:24 PM	#82
Paul W diyAudio Member Join Date: Oct 2003 Location: North Georgia	Neo, N42 or N50...don't remember. __________________ Paul The Octagon

22nd November 2012, 03:26 PM	#83
HellMan diyAudio Member Join Date: Apr 2008	Thanx a bunch guys!! Neos here too... __________________ He\|\|Man

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22nd November 2012, 03:14 PM	#81
a.wayne diyAudio Member Join Date: May 2008 Location: Front Row Center	Are you using neo or ceramic ....?

22nd November 2012, 05:16 PM	#84
dacen diyAudio Member Join Date: Jul 2006	I have used ordinary ceramic magnets for both MR/T ribbon and the bass membrane. For the MR/T I have used 20 mm X 40mm, thickness 10mm. The magnet gap is around 23mm. I have no problem with the sensivity on this one. On the bass panel I have used 25 mm X 40 mm, thickness 10mm. On some recordings I have sometimes wanted the sensivity on the bass membrane to be a little higher, but for normal listening it is OK. Neo´s are a very good choice here. I am using separate amplification for the two.

23rd November 2012, 02:08 AM	#85
DeltaStar diyAudio Member Join Date: Mar 2012 Location: Handel SK	Does the strength of the magnet, say N42 versus N50 make cause for more room between ribbon and magnet?

23rd November 2012, 08:51 PM	#87
dacen diyAudio Member Join Date: Jul 2006	Compared to the quality of sound these speakers produce the sensivity is a very minor issue. They produce an outstanding sound, so I will encourage others with DIY skills to go for it.

24th November 2012, 04:14 PM	#88
a.wayne diyAudio Member Join Date: May 2008 Location: Front Row Center	Neo's are way too costly unless you are building a small ribbon , so i would like to focus on improving efficiency with ceramics as best as possible , motor design etc ..

26th November 2012, 12:01 AM	#89
a.wayne diyAudio Member Join Date: May 2008 Location: Front Row Center	I guess no interest .....!!!!!