awkwardbydesign
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Location: Plymouth, Devon.
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« Reply #75 on: June 07, 2021, 01:12:16 PM » |
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Hard to tell. They were stored flat in the shop, probably for 20 years! As they are so old they have ripples in them, which makes it hard to stick them down flat, without slight ridges in them. They were taken home rolled up, about 40cm diameter, and the two remaining are still like that, in a box. I will open them out today, and see if there is a lateral curve visible. One thing I have noticed is some slight score marks, laterally but at a slight angle, maybe 15 degrees. On the opposite side there is a corresponding ridge, almost like a weal in skin. Maybe 3 or 4 in a 120cm length. Is that from the cutting knife, and if so can it tell me which side is which? I will check if the two sides already done are opposite ways up or not.
I do suspect that I may have stretched the second one as I rolled it down; I can try to bunch the next one together rather than pull, but getting it on without it touching down too soon and getting stuck before it is flat is tricky on my own. But I was surprised that the split developed over several hours.
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« Last Edit: June 07, 2021, 06:10:03 PM by awkwardbydesign »
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Richard.
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awkwardbydesign
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« Reply #76 on: June 07, 2021, 06:20:03 PM » |
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I have laid them flat, and there appears to be a curve. The convex side is the side to glue, yes? Counter intuitive really, on a curved surface. The concave side of the veneer has small pits in a part of the grain, while the opposite side has corresponding small bumps, where it has dried out so much. And the split piece was glued on the pitted side, which would be the tight side. That could be the problem, plus I probably stretched it too. I didn't realise there was a right and wrong side. Live and learn.
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Richard.
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Robert Young
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« Reply #77 on: June 07, 2021, 09:13:00 PM » |
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Yes, glue the convex side....that's the side that was cut, and thus has the knife checks... I'm not sure there is a correct of incorrect way, just a more likely to work and less likely to work way...  |
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-Robert
L75/PTP6/Slate plinth/Schroeder/Allaerts+Bokrand/SPU; Thorens TD 124 + Signet XK50/Micro Acoustics 3002 + Infinity Black Widow/B&O mmc2 + SME 3009/Shure V15iii + Gray 108/GE RPX; modded Revox B77 2-track hi-speed; Air Tight ATC-1/ Fi Komuro 70/ JC Morrison TQWPs; Morrow and Kimber cabling
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awkwardbydesign
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« Reply #78 on: June 26, 2021, 01:50:05 PM » |
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All veneer on, leather front on one cabinet, driver tried in cut-out. Now to apply leather to the other front and then finish lacquering both cabinets. And then cut the foam grilles and stick on the velcro hook strips, which should hide the joints and screws on the front.  |
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Richard.
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niclaspa
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« Reply #79 on: June 26, 2021, 03:21:08 PM » |
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Truly awesome work! I hope that they will sound as good as they look!  |
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Niclas
Ernst ist das Leben, heiter ist die Kunst
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Robert Young
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« Reply #80 on: June 26, 2021, 03:32:47 PM » |
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Fabulous work. This must be tremendously satisfying!
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-Robert
L75/PTP6/Slate plinth/Schroeder/Allaerts+Bokrand/SPU; Thorens TD 124 + Signet XK50/Micro Acoustics 3002 + Infinity Black Widow/B&O mmc2 + SME 3009/Shure V15iii + Gray 108/GE RPX; modded Revox B77 2-track hi-speed; Air Tight ATC-1/ Fi Komuro 70/ JC Morrison TQWPs; Morrow and Kimber cabling
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awkwardbydesign
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Location: Plymouth, Devon.
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« Reply #81 on: June 28, 2021, 09:29:16 AM » |
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Exhausting actually. And painful; I turned and misjudged the position of the cabinet, and hit the back of my ribs on a corner. I thought I had cracked one, but the doctor thinks it is just heavy bruising. The speaker is fine.
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Richard.
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wenig watt
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Der Kopf ist rund...
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« Reply #82 on: June 28, 2021, 09:46:39 AM » |
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Oh, you were lucky again. get well soon!
Arndt
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...damit das Denken die Richtung ändern kann.
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Firebottle
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« Reply #83 on: June 28, 2021, 04:01:56 PM » |
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Stunning work. Just saying to the other half I wouldn't have the patience.
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I'm Alan, an avid valve amp designer.
I don't bite, ask any question you like.
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Kno
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« Reply #84 on: June 28, 2021, 04:06:50 PM » |
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The speaker is fine.
 Easy to forget how much your bones can hurt when you crack/bash them. I’m wincing now. I knocked a knee on a door frame a few days ago and it hurt so much I felt sick for a second. I really don’t know how action heroes make it through films when they keep being shot, blown up etc. Glad the speaker is ok. |
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David
L75 Marvellous Tatty (Silvernote 512, increased mass stock plinth, sph main bearing collar, Jolyon bearing), Yamaha AS301, Q Acoustic 3020
GL78 Bouncy Castle (stock, sprung, and sings likes a bird), Cambridge A1 Mk1 (Mike Creek), Cambridge CD5 v.3 Pyramid 4080
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Reffc
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« Reply #85 on: June 28, 2021, 09:09:08 PM » |
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Exhausting actually. And painful; I turned and misjudged the position of the cabinet, and hit the back of my ribs on a corner. I thought I had cracked one, but the doctor thinks it is just heavy bruising. The speaker is fine.
Hope you're OK Richard. Hand building large speakers comes with challenges like this and you're right, it is exhausting work! They're looking good and I hope the sound does your efforts justice. Give me a shout if you need any input on the tuning. |
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awkwardbydesign
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« Reply #86 on: June 29, 2021, 09:04:30 AM » |
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Thanks, will do.
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Richard.
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awkwardbydesign
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« Reply #87 on: July 03, 2021, 11:05:55 PM » |
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The cabinets are finished, rubbed down with wire wool, and the bases sprayed black and screwed on. The are threaded underneath for either spike feet or springs. So ready to bring indoors. But first I will cut the ply for shipping boxes for the QUAD 2805s, so I can advertise them for sale.  |
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Richard.
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awkwardbydesign
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« Reply #88 on: July 04, 2021, 06:59:22 PM » |
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Foam grille velcroed on. I bought the foam for a different pair, but it came in handy for these. Just the Tannoy badges to stick on once the speakers are moved indoors.  |
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Richard.
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ian
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« Reply #89 on: July 04, 2021, 10:20:12 PM » |
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Brilliant work Richard, bet you can't wait to hear them!
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what you hear depends on where you're sitting
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