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Eminence Delta Pro 18 A in prism sealed 150 liters
Eminence Delta Pro 18 A in prism sealed 150 liters
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Old 22nd August 2019, 03:00 PM   #301
academia50 is offline academia50  Argentina
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I did not find here any trade that sells something similar to these binding posts, they must be long to cross the 18 mm MDF panel.....

Dayton Audio BPA-38SN HD Binding Post Banana Jack Pair Satin Nickel
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Old 22nd August 2019, 03:04 PM   #302
academia50 is offline academia50  Argentina
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These are the ones available here ....
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Old 22nd August 2019, 03:14 PM   #303
academia50 is offline academia50  Argentina
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So I found a dilemma, ordering them from the foreign supplier involved a long wait and e-commerce procedures that are always a complication ..
But they are the same as those installed in my DTQWTII cabinets, they are Troels' favorites!
So, I decided to get to work, change for each other !

I hope the sound quality is not altered too much! (just kidding, I consider this a superstition)

Next pics !
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Old 22nd August 2019, 04:57 PM   #304
academia50 is offline academia50  Argentina
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Here we have the binding post replacement process, but, there was a problem .....
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Old 22nd August 2019, 05:00 PM   #305
academia50 is offline academia50  Argentina
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The bridge should be easy to remove, and then it cannot be left near the base!

So it was as you can see here in the last pic ....
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Old 22nd August 2019, 05:05 PM   #306
Osvaldo de Banfield is offline Osvaldo de Banfield  Argentina
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In my K's I used directly a 3/16" brass screws with washers and wing nuts. If they are very tight to the wood panels, no air may leak. I used independent screws for the tweeter and the woofer, for better flexibility of the connections. Although it's not necessary, the chassis of the speakers are grounded in the bass (-) pole.
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Old 24th August 2019, 07:58 PM   #307
academia50 is offline academia50  Argentina
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Quote:
Originally Posted by Osvaldo de Banfield View Post
In my K's I used directly a 3/16" brass screws with washers and wing nuts. If they are very tight to the wood panels, no air may leak.......



Look at post 191 of this same thread :

......But I am thinking about placing three solid feet of wood, and in this way making the connection with screws / wing nuts, and "U" connectors..........

But a search in shops near my house did not yield positive results, I did not find either copper or bronze, so I preferred to have a little fun !


BULONERA TIGRE S.A.BulonesBULONERA TIGRE S.A.


PS :


You say :

" If they are very tight to the wood panels, no air may leak. "


The sealing is not so strict , in fact, Sigfrid Linkwitz (RIP) recommended making a small hole of +- 1 mm to equalize the pressure of air of the outside with that of the inside of the enclosure. That way you prevent the cone from being outside the resting position in those situations, do you understand?

Subwoofer design



Hey, upload some pictures of those butterflies you have !
Are they beautiful like this ?
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Last edited by academia50; 24th August 2019 at 08:06 PM.
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Old 11th September 2019, 08:22 PM   #308
academia50 is offline academia50  Argentina
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I have recovered a little more internal volume by chamfering the inner side of the speaker hole....

Regards
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Old 17th September 2019, 09:45 PM   #309
academia50 is offline academia50  Argentina
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The holes for fixing both speakers are ready.
The screws were placed, then removed and abundant vinyl glue was applied to the holes to harden the threads in the MDF panel. It is a good trick !
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Old 22nd September 2019, 07:31 PM   #310
academia50 is offline academia50  Argentina
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I have closed one of the cabinets.
As I mentioned in a previous post, 2.20 kg of polyfill are placed between the three compartments.
So I have separated the material corresponding to the lower housing where the subwoofer goes, it will be placed after the cosmetic part is finished.

This is already weighing too much, and almost 8 kg will be added. more between the weight of the speaker, screws and binding posts .....

I think I will have to hire staff to move these creatures to the living room !

Next photos shortly ....
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