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Multi-Way Conventional loudspeakers with crossovers

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Old 5th February 2014, 03:07 PM   #31
raelman is offline raelman  Spain
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Yes I'm as nervous as happy and willing to hear how this adventure sounds like.
Maybe I'm wrong maybe I'm right.... We will see what happens.

Jokerzero, your price is exactly the same I got here in Spain..... Go for that now!!!!

I told you and I tell you once again: any mod you need I can make it very very quickly and as cheap as 0 cost.
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Old 5th February 2014, 03:09 PM   #32
raelman is offline raelman  Spain
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I forgot one thing nannoo... My ears will be kind when my eyes are looking to my creation, that's the definitely point that puts the balance in the side of changing.
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Old 5th February 2014, 09:56 PM   #33
raelman is offline raelman  Spain
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Once the body has been built in partial pieces, and before a final assembly of each enclosure, I made the cuts to shape the back side of the speaker.

Click the image to open in full size.

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Now its time to see how this is going on

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And to start sanding to make an accurate fitting:

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I have to say this is a very important machine. I couldn't imagine how much sandig I would have done if I haven't had it
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Old 5th February 2014, 09:57 PM   #34
raelman is offline raelman  Spain
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I think these pics shows how todo the swa job to shape the tail
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Old 6th February 2014, 08:02 AM   #35
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Again, outstanding job!

have to discuss the overall dimensions and what can be done to get the volume close to 65l without creating a 2 meter high speaker. The other mod would be to the baffle to match the Ekta grande drivers, specification.

The combined budget I have leaves nothing for the finish and a compromise on the crossover component quality, the finish can be done over time so I'm not so worried about that. Substituting wax inductors for air cores is another matter. They charge a big premium for what amounts to wax potting inductors, something done to a guitar pickup for about a 5 premium. That's a topic for another thread, DIY wax potting anyone?

Last edited by JokerZero; 6th February 2014 at 08:09 AM.
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Old 6th February 2014, 08:21 AM   #36
raelman is offline raelman  Spain
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I will send you drawings to meet 65l for bass with the same height than Ekta Grande
Teake a look at your email in half an hour
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Old 6th February 2014, 08:51 AM   #37
raelman is offline raelman  Spain
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I emailed you drawings for Cremoas/Ekta volumes

Inside volumes are:

Total inside volume: 72,20 liters
Mid/Tweeter Camera: 5,87 liters
Woofers Camera: 66,33 liters

The enclosure is a little bit wider and the height is still 111 cm if using DM 30mm

What drivers will you go for? lets see if we meet and we can help ourselves with the crossover.
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Old 6th February 2014, 12:14 PM   #38
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That was quick thanks, will look at those tonight!

Was thinking about adding a narrow layer on top with a piano black finish, and finishing more like the Amati Futura which would I think get a better WAF score, not suggesting that there is anything wrong with the current design.

Re drivers I've always liked the SS mids as specified for the EKTA grande, ever since listening to my friends Gamut's. And that build looks to be a very good match from an excellent designer. But as with all things, it a question of cost - I would hit the budget limit with the cab and drivers with that spec so I might have to settle for something less high end and look at upgrading later. Or I blow the budget and finish them on the quiet over the year, crossover components can arrive in lots of little packages :-)
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Old 6th February 2014, 04:22 PM   #39
raelman is offline raelman  Spain
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Hi.

Troels says that the Ekta has a cabinet net volume of 65 liters minus bracing and mid cabinet so he ends in the range of a little above 60 liter.

Maybe you need a re-design
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Old 6th February 2014, 09:01 PM   #40
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Yeh looking at the diagram for the EKTA has an internal volume of 34.8 by 107.8 by 17.6 = 66.025 liters. Mid Tweeter enclosure uses 5.45 liters, leaving 60.57 less bracing port, cross over and drivers for the remainder. I could fill the 'spare' 6 liters with additional bracing, or bolt something heavy to the back of the tweeter enclosure and call it a "tuned mass damper" Its easier to lose volume than find it...
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