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Jordan Eikona 2 group buy

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Speaking of enclosures....I am leaning towards the 38" MLTL...but also found Pete's MLTQWP design interesting: JX92S MLTQWP speaker

It was designed for the JX..but seeing that the dims are the same for the MLTL, I assume it to be interchangeable ?
Hi
I have a new mltl on the way designed using Martin Kings mathcad worksheet. I'll be starting a new thread in the new year entitled Eikona 2 in High Definition Loudspeaker.
I've still some work to do but I will build a new pair and publish pictures giving support to other builders.
Of special interest is the heavily reinforced concrete front baffle. It's 200 mm long x 165 mm wide x 28mm thickness. It provides a stable non resonant platform for the driver. Listening with this baffle is like switching from sd to hd on your TV. Everything comes sharply into focus but their main attribute is they create a sense of presence to the music that wooden fronted loudspeakers can not approach.
For more info on how the baffle developed type in matteisloudspeakers in Google and read the story. I am making a few pairs of baffles available to members of this group buy at a special price to generate interest. Contact me through the email address on the site if you are interested. It'll be first come first served.

Jon
 

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I received my drivers, and I wanted to say how impressed I am with the build quality. I own many drivers from EJ Jordan as well as other high-end and boutique designers. These are absolutely top notch -- superlative.

Thanks for this group-buy opportunity!
 
I received my drivers, and I wanted to say how impressed I am with the build quality. I own many drivers from EJ Jordan as well as other high-end and boutique designers. These are absolutely top notch -- superlative.

Thanks for this group-buy opportunity!

Fantastic. Glad you're pleased with them.

Ted has been very impressed with the quality and support from Scanspeak in making the Eikona 2.
 
Apologies to both - port should have been centred 15cm from the bottom, not 5.5 cm. The mistake was mine on the drawing and not on Mark Dikovics's original calculations.

Steve - The effect of having so close to the bottom will have very marginal difference on the sound.

There is now a revised PDF on the website which includes the option for an extended base to aid stability and bracing for the cabinet, if required.
 
Colin's right. I queered this but port placement makes little difference according to Martins worksheet simulation. I left mine 5.5cm from the bottom but the port I have does not require such a large cutout.

My own mltl's have the same width and depth but I have reduced the height by 150 mm so that the driver is now 100mm from the top and lengthened the port to 165 mm. After lengthy listening tests and adjustments I arrived at 6oz polyester wadding in the top 400mm and baffle step compensation of 4db using a network of 3R3//0.9mh for 200 mm wide baffle. If anyone wants to see the worksheet, I can send
you a pdf but the graph is virtually the same, I lost about 2Hz. Drop me an email to j.espley@talktalk.net

I now have a few pairs of reinforced concrete baffles made 165 mm wide so will fit into this design. The baffles now have no recess and can easily be implemented to take performance of this wonderful drive unit to a new level. They are now available on a commercial basis but to members of this group buy I am making an introductory half price offer of £50 plus postage.

Wood is a vastly inferior material and this is a unique opportunity to build something better. Think about it guys.

Jon
 
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