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Old 5th June 2012, 02:22 AM   #1191
jdkJake is offline jdkJake  United States
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Quote:
Originally Posted by Joel Wesseling View Post
New Pair up after much work on finishing techniques..
Crossover on back plate with solid connection..

Sounding great!

Have next pair in the works.. Trying a 18mh air inductor on this one and going up in capacitor selection..

Joel
Beautiful work Joel, as always! What is that veneer? Very deep character.

How about a pic or two of the back plate mounted crossover?

Did you go with the Jantzen torroid at 18mh?
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Old 5th June 2012, 02:50 AM   #1192
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Beautiful work Joel, as always! What is that veneer? Very deep character.

How about a pic or two of the back plate mounted crossover?

Did you go with the Jantzen torroid at 18mh?

Thank You.. The veneer is walnut but the front is a walnut 4mm thin board.. The 2 front boards were machined from a 1" solid walnut.. Band sawn in half, then planed to 4mm..

Just a picture I took after I had the crossovers built on the plate. the wood that holds the parts is 96mm wide and fits between the stiffening braces.. The larger 1.8mh going to lower woofers is not on the plate but attached to the main brace... Next pair has 2 rear plates.. one for tweeter and one for mid/bass..

Stayed with the choke I had. 18mh parts express I believe..
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Old 5th June 2012, 10:37 AM   #1193
irext is offline irext  Australia
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Quote:
Originally Posted by Joel Wesseling View Post
Thank You.. The veneer is walnut but the front is a walnut 4mm thin board.. The 2 front boards were machined from a 1" solid walnut.. Band sawn in half, then planed to 4mm..

Just a picture I took after I had the crossovers built on the plate. the wood that holds the parts is 96mm wide and fits between the stiffening braces.. The larger 1.8mh going to lower woofers is not on the plate but attached to the main brace... Next pair has 2 rear plates.. one for tweeter and one for mid/bass..

Stayed with the choke I had. 18mh parts express I believe..
Cabs look great. I,m a fan of veneer with character. I did have some difficulty when veneering mine as the iron on veneer only comes in 300mm widths and the cabs are 380 deep. A join in iron on is not an option as it shrinks back and leaves a gap. I ended up using 3mm ply backed Tasmanian blackwood sheets which come in 1200 x 2400 sheets for the top and sides. I used a router to create the mitred joints where the sides meet the top (fiddly). I then used the iron on sheets for the front and back. I was able to get book matched iron on sheets so the two cabs match quite well. Clamping and gluing the side and top sheets was a challenge. I used the other cab as a sort of press arrangement and used ratchet straps to apply pressure. See pic. A lot of fiddling about but quite a reasonable result. Your xovers look very neat. The only thing I might suggest is that the wire wound 10W resistor close to the two Bennic bipolars might reduce their life a bit. Electrolytics hate heat and the 10W resistor gets a bit warm. Great job though. I very much enjoy looking at other peoples take on the finishing.
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Old 5th June 2012, 08:56 PM   #1194
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Originally Posted by irext View Post
Cabs look great. I,m a fan of veneer with character. I did have some difficulty when veneering mine as the iron on veneer only comes in 300mm widths and the cabs are 380 deep. A join in iron on is not an option as it shrinks back and leaves a gap. I ended up using 3mm ply backed Tasmanian blackwood sheets which come in 1200 x 2400 sheets for the top and sides. I used a router to create the mitred joints where the sides meet the top (fiddly). I then used the iron on sheets for the front and back. I was able to get book matched iron on sheets so the two cabs match quite well. Clamping and gluing the side and top sheets was a challenge. I used the other cab as a sort of press arrangement and used ratchet straps to apply pressure. See pic. A lot of fiddling about but quite a reasonable result. Your xovers look very neat. The only thing I might suggest is that the wire wound 10W resistor close to the two Bennic bipolars might reduce their life a bit. Electrolytics hate heat and the 10W resistor gets a bit warm. Great job though. I very much enjoy looking at other peoples take on the finishing.

I adopted your idea today to use the box as a non flexible platform to clamp up something that needed to be flatened and clamped at the same time... Thanks for that one...

Maybe I could raise the 10w and use more hot melt.
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Old 25th June 2012, 01:54 AM   #1195
jdkJake is offline jdkJake  United States
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Boy I have to tell ya,

When these babies are toed in just right, they throw an image like nobodies business!

Nice.

Very, very nice.
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Old 25th June 2012, 04:28 AM   #1196
irext is offline irext  Australia
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Boy I have to tell ya,

When these babies are toed in just right, they throw an image like nobodies business!

Nice.

Very, very nice.
I agree. The imaging is amazing. Not only can you place everything in the left right axis but the front to back axis as well with pin point accuracy. It's quite uncanny. I've just replaced the 1.8mh and .33mh inductors in my crossovers (only the ones in series with the LF and MF pairs) with Jantzen units. They have some serious copper in them and are quite weighty. The original inductors I used had significantly higher series resistance but were still within Joe Ras's specification but I thought I would give these a go just to see what, if any, difference they would make.The jury is still out on what effect this has had. I've not had a chance to have an extended listen yet. It's all good fun.
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Old 25th June 2012, 10:42 AM   #1197
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Originally Posted by irext View Post
I agree. The imaging is amazing. Not only can you place everything in the left right axis but the front to back axis as well with pin point accuracy. It's quite uncanny. I've just replaced the 1.8mh and .33mh inductors in my crossovers (only the ones in series with the LF and MF pairs) with Jantzen units. They have some serious copper in them and are quite weighty. The original inductors I used had significantly higher series resistance but were still within Joe Ras's specification but I thought I would give these a go just to see what, if any, difference they would make.The jury is still out on what effect this has had. I've not had a chance to have an extended listen yet. It's all good fun.

I can't get enough music. The imaging and organic quality makes it very addictive..

I have a pair of 18mh air. There very large so the bottom of cab is only place for them.. will test these out...

Joel
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Old 25th June 2012, 02:37 PM   #1198
tpate is offline tpate  United States
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JDJake, Have you tried the Bolser mods yet, and the gap with the wave guide? Both take the imaging to another level. I know that seems impossible now but I assure you it is true. I think the gap tweek is dependent on how live your room is and the tonal balance of your system as to wheather it will be good for you. I have finally got all the elements right in my system and the Elsinores are capable of pure magic. Wish some of you lived near enough to hear it. If I change anything at all in the chain the "magic" silps away and it merely sounds great. My advice is to try as many different combinations of tubes and equipment as you can and keep a journal as to how any one component affects the overall sound. Good listening.
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Old 26th June 2012, 01:49 AM   #1199
jdkJake is offline jdkJake  United States
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I have received all of the parts for the bolsert mods. Now I just need the time to install them and try it out. Hopefully, the upcoming USA holiday will provide a good opportunity. Especially with all the rain and such. As far as the gap, as it currently stands, I have the tweeter back mounted to the Joel W. waveguide as close as it can physically get. There is still a gap per se, but, I guess I am still a bit unclear of how big the gap is on your install. Perhaps a pic or two would help.

I also received all of my audio measurement gear, so, I want to measure the port frequency and overall response in my current listening space as well. I will post what I measure.

What I find interesting is how little toe-in these require. Not sure if it is the waveguide or what, but, far less than any other speaker I have used. They are practically straight-forward in my listening space. If toed-in too much, the left right is fine, but the depth suffers greatly. A least in my experience.
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Old 26th June 2012, 01:51 AM   #1200
jdkJake is offline jdkJake  United States
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Wish some of you lived near enough to hear it.
I travel out to your neck of the woods time and again for business. Next time I am out that way, I will shoot you a PM. Perhaps an audition and adult beverage are in order.
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