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Old 30th December 2011, 02:05 PM   #111
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Location: wigston leics england
Default continuing epsilon clones

Can't wait for the 12um mylar, so I'm using a neo diaphragm I had hanging around. Pictures show diaphragm being marked for foil in one continuous piece , will have to use sellotape between as there are 4 epsilon diaphragm layouts on this one. Should finish sunday depending on what I do new years eve!!!
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Old 30th December 2011, 02:52 PM   #112
tyu is offline tyu  United States
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I well be stoping buy.....to hear your new speakers....well maybe in my next life i well get to England....looking good thanks for the info...have a new year.
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Old 1st January 2012, 11:43 AM   #113
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Have not quite finished but enough to try it against the big one on the left . Which is a double epsilon diaphragm. The small one is a quadruple epsilon diaphragm, which works quite well even tho' the design of magnets is incorrect!!
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Old 2nd January 2012, 12:30 PM   #114
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finished small one hanging up and sounds as sensitive as the big one and it weighs 8 kilos and uses 125 magnets as against 294 for the big one. Very happy with the design, may have to rebuild all my designs again
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Old 2nd January 2012, 12:58 PM   #115
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I am going to design and build new pair using 50 x 12.7 x 6 mm neos I have had for some time. Must have been waiting for this design. Just have to work out the magnet and diaphragm layout. Another smaller and lighter design with much improved sensitivity. I had to use these magnets otherwise they would have been wasted!! About the same size 60 x 40 cm, and I don't use any resistors, probably about 6.6 ohms, hopefully. If all works out, I will be kept busy rebuilding all my other 6 x 40 cm designs, with the 50 x 12.7 x 3 mm neos, about 20+ altogether. Wish me luck.!!?
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Last edited by JAMESBOS; 2nd January 2012 at 01:07 PM.
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Old 2nd January 2012, 02:00 PM   #116
tyu is offline tyu  United States
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Henry
Tell Us agin ....what spacing on the mag...are you going with...looks great stay at it..

thanks for your time an postings
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Old 2nd January 2012, 09:15 PM   #117
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No spacing between magnets found it is a waste of sensitivity, apart from being difficult to glue the magnets to the steel sheet, even worse with neos, especially 6 mm ones. So all my rebuilds and subsequent designs will all be touching magnets. In fact the 60 x 40 cm one is louder than the 4' x 2' design with the gaps between the magnets!!!? So I will have to rebuild all my rebuilds. Wish me luck.
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Old 5th January 2012, 08:35 AM   #118
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Quote:
Originally Posted by JarreYuri View Post
I'm afraid You have the magnet placement wrongly laid out.
You will not get much sound out of it.


---
I am here: Google Maps
Actually it sounds quite loud in comparison with my first epsilon clone using gaps between magnets, so you are incorrect in your assumption.
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Old 12th January 2012, 02:44 PM   #119
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Another 45 meters bites the dust, will have my new pair with the epsilon clone diaphragm, using the 50 x 12.7 x 6 mm neos ready by Monday. Then will start on my rebuilds using epsilon clone. Wish me luck.
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Old 15th January 2012, 12:37 PM   #120
harlee is offline harlee  Singapore
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Hi Jamesbos,
You have some interesting speaker building there. I have about 300 pcs of 50x10x5 neos, and would be interested in building what you have. Some questions I would like to clarify if you don't mind.

1.By building the 60x40, how big is the sweet spot?
2.How wide is the frequency range?
3.How should I match the magnet pattern to the foil layout pattern?
4Should it have some through space like in the ESL?
5.What's the tension should be?
6.What do you think about a 80x30? Advantage and disadvantage?

Appreciated
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