Dual EDS 1000 and airprodigy linear arm build

[Ant]

Olivewood like the piece I used here tends to be a pain in the arse to get in reasonably sized pieces, however 'normal' olive without all the figuring in it isn't too difficult to get hold of via specialist hardwood firms.
The best source of this highly figured olivewood I have found, is a firm that makes kitchen chopping boards out of it. The biggest pieces I could get off them were about 50cm x 40cm, and were about 30 odd quid each. They are literal slices of tree, live edged, thicknessed to 20mm thick so I haven't got to do that bit.
Only real issue is that there can be quite abit of waste once you have cut your panels out of it, thats why I had the bit left over that I used for this.
I'll dig out the details of the firm I used

[Ant]

sorted out the control knobs on the psu box, nice and simple. After abit of thought, I just sleeved up the 4mm shaft pots with some air line tubing to make them 6mm and some normal control knobs fitted perfectly. no need to make any.

Eds1000 airprodigy build by anthony cresswell, on Flickr

I also bought another 5mm neoprene platter mat for it to replace the dual one.
the middle control does need modifying though, the setscrew doesn't grab the switch shaft properly as its too far up the body of the control knob. I'll have to drill and tap a new hole closer to the base of it so it'll sccure properly, but predictably, i dont have a 3mm tap that will actually tap.......

[Paul Barker]

Drill it, snap drill off in hole. Job done .

[pre65]

i dont have a 3mm tap that will actually tap.......

They are cheap enough on Ebay.

https://www.ebay.co.uk/itm/HAND-TAPS-HS ... rcAlxtqjDg

[Ant]

I'll get one from greenwood's, my local engineering firm
They sell Brookes taps in sets of 3 (plug, bottoming and taper), not particularly cheap, but high quality ones. The ones I have that I use regularly are all Brookes ones, the others are worn dormers and I have some orrible monkey metal ones. I really should bin those......

[Ray P]

I like Ant.

My local hardwood supplier has just reopened so I will go and see what they have to offer for my front panel. BTW, where did you get the metal case for the supply?

I couldn't help but notice the Aunt Corey PCB lurking in the background of your picture. I can send you my breadboard version, sans BUF-03s, if you want to give it a try it against Ed's B1? You're welcome to keep it and reuse the power supply when you do your Khozmo version - with some care you might even be able to replace the Alps pot with the Khozmo. Let me know.

Anyway, this is my quick and cheap initial build of the Aunt Corey buffer for a passive attenuator, using 30yr old BUF-03 op amps, and it's playing music.

[Ant]

Hi Ray, I found the link to where I bought the olivewood from
https://www.ebay.co.uk/itm/184094254528
And the case is here
https://www.ebay.co.uk/itm/323792574832
The case as is, is pretty flimsy and nasty, it comes flat and you bend the pieces along score lines in the metal to form the top and bottom.
The reason it's flimsy is that the front and back are just flat plate and are crap. But I didn't use the front and back, and fitted the olivewood fascias instead. Which makes it not flimsy, and really nice and rigid. The reason I got it was because of the pre cut vents in the pieces because I didn't know how hot the TX for the dual would get.
I was offering up the aunt Corey board to see what space was left for a psu if I got another one for it to go in, ventilation again, I reckon it could fit but it'd be tight.
Better to get 2 and have a separate psu with a flying lead to plug in.
Actually, I wouldn't mind trying yours Ray, getting mine done is going to be a long time coming, people keep asking to pay me to make things for them. So my stuff gets put on the back burner again and again.....

[ed]

if you want to give it a try it against Ed's B1? Y

give it up Ray, please....it's not my B1...this is the fourth time, possibly fifth that you've phrased it thus, implicating that I'm in some kind of competition.

The B1 is Ant's, he bought it, I have absolutely no horse in any race. If you want or anybody wants to laud it or criticise it after some kind of comparison then maybe address it to Nelson Pass.

rant over

and yes, I'm not having a particularly good day..at least not so far.

[Ray P]

give it up Ray, please....

Ed, I didn't even consider it as a competition, I referred to it as Ed's simply because you built it. Apologies if I've upset you, there was no intent.

Probably best if I withdraw the offer, to diffuse things, and keep the Aunt Corey BUF-03 to myself.

[Ant]

the deck itsself is now finished

Eds1000 airprodigy build by anthony cresswell, on Flickr

the neoprene platter mat arrived, and the control knobs have been tweaked again so they are all bang on in line (it was still slightly out and getting on my nerves)

ive had it running for a couple of hours and had no need to tweak the speed so id call it a success. an ear to the plinth while its running reveals no sound at all from the motor that my ear'oles can detect.

shouldn't be long before the arm arrives

ive been using the jbe strobe disc to watch the speed, could do with another 2 so that this deck and the big lenco have one too. shall have to look at whats available

[IslandPink]

Looks immaculate - as ever.

[shane]

You weren’t tempted to try to rig up a mirror for the strobe markings under the platter then?

Beautiful job by the way. I built one of these into a two-layer slate plinth a few years ago and the motor really is a lovely thing. Sounded wonderful but since my DIY skills are a long way from your standard it was banned from the sitting room.

[Ant]

No because there are a load of bits of the strobe markings missing from the ring on the underside of the platter which was unfortunate
I think it had been pulled out of the original plinth a long time before I got hold of it and something had scratched bits off it while it was stored. I was quite surprised that the strobe was a paper sticker to be honest

[JamesD]

Fabulous...

Really nicely done can't wait to hear how you think it sounds..

[Ant]

The arm has arrived
Going over all the bits and pieces I'm very impressed with the build quality and attention to detail. All the 3d printed parts are very nicely done and the matt textured finish on them is really nice too. No printing lines in the parts
Compared to the terminator arm it is physically smaller and much much lighter, this was what Andy, the builder of it wanted, its the point of it being made at all, so that it can be mounted on a suspended subchassis deck. You aren't putting a terminator arm on an ss deck it's simply too heavy.
The installation instructions are on his website and are nice and comprehensive, adjustments are simple to make and even azimuth adjustment is easily provided. Much easier than it was with the terminator arm if my recollections are correct.
I've just gone over it and it's instruction pdf so far, it's not fitted yet. I need to move some stuff around, take my time and do it properly.
To be continued