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Multi-Way Conventional loudspeakers with crossovers

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Old 22nd August 2005, 06:41 AM   #31
huguini is offline huguini  Argentina
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I made a pair recently with the round edged with a 4 mm cork and (I don't know exactly how to traslate this) "espuma de poliuretano". Poliuretane foam? It comes in a can.

regards
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Old 22nd August 2005, 02:59 PM   #32
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Thanks for the picture.

I may use the foam as well.It is probably not the most desirable hi-fi product in speaker building,but it could work just fine.
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Old 22nd August 2005, 07:24 PM   #33
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What do you think about rounding the corners with perforated sheet-metal or MDF and then filling them with something absorbant ? This way it may not be necessary to add stuffing to the pipe later.

I have not started building my speakers yet,but trying to figure out everything before the start.
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Old 22nd August 2005, 07:36 PM   #34
huguini is offline huguini  Argentina
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I'm not an expert, this was my first DIY project, but MDF seems good to me. Maybe you can use some heavy material to make the complete box heavier. I read somewhere that original Essence weight is 16.2 kilos, and mines seem lighter. Are you going to stuff the line? I didn't. Just used the felt like described ar Jordan's site. Maybe you can tune it later with some insulation at the end of the line (some people did that). Are you going to use BSC?

Best regards
Voçe e portugueis?
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Old 22nd August 2005, 08:19 PM   #35
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I read one review of the DIY Konus essence and there was mentioned that maybe some stuffing added to the corners of the transmission line would help to the booming bass.That's where I got the idea.

I was also thinking of useing birch plywood and "painting" it with epoxi inside and then fitting veneer with epoxi as well.but don't know if it is worth it.Simple MDF would be so much easyer to buy in small quantities cutted to size.

I have built few speakers before but this will (if I make them) be the first serious project with veneer and all.It would be very tempting to make exact replicas of Konus essence.....really like the original looks.

Do not know about BSC yet.......but I think not.

p.s. sou Finlandes,moro em Portugal
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Old 30th December 2007, 03:28 PM   #36
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Hi, altough this item is nealy two years old, it`s actual to me. I`ve planed to build also a pair of essence clones with JX92S. Did somebody build this shortly and what are the results? What design did he use? According to me the JX92S is the best for this but did someone used a other brand driver? I`m very curious to hear the results.
Thanks from a newbee on diy-speakers
Bye the way; I wish all of you a healthy and peaceful 2008!
Regards,
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Old 8th January 2008, 04:45 PM   #37
scottjr is offline scottjr  United Kingdom
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Default Jordan Transmission line design

I built two Jordan transmission line speakers. I used MDF for the back and internals but used oak for the top, sides, front and base. I also put fillets at the bends of the line. I think the sound is excellent and is better than my small BBC monitors.
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Old 8th January 2008, 04:47 PM   #38
scottjr is offline scottjr  United Kingdom
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Default Jordan transmission line speakers

Here is a photo of the inside prior to gluing. The complete speaker cabinet is very rigid.
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Old 8th January 2008, 07:33 PM   #39
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Default Jordan Transmission line design

Hi James, thanks for your comment and pictures about your Jordan Transmission line design. It`s a great help for me and it confirm my idea to round the bends on the inside. It`s a good idea to use mdf in combination with oak. The oak looks very nice and solid. I will probably go for baltic birch or so. According to the hole size you used the jx92s on this. Maybe there are people who used other drivers for this design? Thanks James and as soon as i got results on my project i will place the pictures here.
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Old 8th January 2008, 10:10 PM   #40
scottjr is offline scottjr  United Kingdom
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I used the JX92S which I purchased directly from Mrs Jordan in Wales. http://www.ejjordan.co.uk/systems/jx92_system.html
The wood was roughly sawn timber 2.5mm thick which I planed down to thickness after roughly cutting to shape with an hand held circular saw. I then cut it to shape on the table saw at a woodwork club I attend for 4 hours a week.
My biggest difficulty was making the hole for the driver. I used a router with an home made wooden trammel and practised on a piece of pine before cutting the oak. I then made the recess with a recess bit in the router. I made the fronts slightly oversize and then planed them after the glue was set. I bought the terminals on ebay from the USA. My wood cost £90. You can buy complete kits from http://www.decibelhifi.com.au/prod146.htm at great expense,
Good luck
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