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Old 12th August 2012, 10:11 AM   #31
Did it Himself
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Join Date: Nov 2003
Location: Gloucestershire, England, UK
Originally Posted by edinm View Post
Biggest advantage of isobarik is elimination of distorsion in LF.
Isobarik makes no difference to distortion unless you use the push-pull method.

Nice project. Was there a particular thread that inspired you with this FAST idea?

Originally Posted by fvaille View Post
Hoping E60 has a better construction than JRX6HD.

I had JRX6HD in sealed boxes (2.2l). A first one failed after 6 months, and now it's the second one. I'm wondering if I should replace with E60 or give up with unfiltered small Jordans/EAD (still very happy with my E100HD+ in modified VTL, although they needed some HF lowering)

Do you use vinyl? With no high-pass filter on them the low emissions from vinyl playback will destroy any small speaker. Even with CD I would fit a filter, they are only small speakers with little xmax after all.
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Last edited by richie00boy; 12th August 2012 at 10:30 AM.
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Old 12th August 2012, 10:28 AM   #32
fvaille is offline fvaille  France
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Originally Posted by richie00boy View Post
Isobarik makes no difference to distortion unless you use the push-pull method.

Nice project. Was there a particular thread that inspired you with this FAST idea?

I think running them with no high-pass filter is asking for trouble unless you keep to very low volumes only.

Pb is that I'm zero at engineering filter. Any plans and component list to filter out below 150Hz? I initially went without filter because Ted Jordan did advocate for that. That's also the setup I have with my E100 without any problems. Pb is not the values (there are web sites to calculate the filter), but I've no idea which specification to buy (power, type of component, ...) and I wouldn't want that the filter is more expensive than the driver, but also would like to avoid degrading the sound with a bad filter.

I thought beauty of the FR was also avoiding any filtering that affects the sound, so I'm a little confused.

Last edited by fvaille; 12th August 2012 at 10:50 AM.
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Old 12th August 2012, 07:01 PM   #33
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Location: Cowichan Bay, BC
Nice work! It's good to see someone putting those Aura Sound drivers to good use. They've been so temping because of the low price!

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