[gilency]

Quote:

Originally Posted by paxeaxe23 /img/forum/go_quote.gif Yes its the Galaxy case, I live in Germany so it was easy to order from Italy. I got it here modu

which size did you get?

 

[Sathimas]

I think it's the same size as mine, 330x280mm (80mm height)

Those cases are really high quality, the only problem is that they all look the same as long as you don't put some more effort in making them look unique.

Is there still some exstata builder in this thread without headphone?

I have a only 5 year old like new SR303 here for sale

 

[Beefy]

Well, these came in the mail yesterday - minty fresh NOS SR-Lambda normal bias drivers - and I installed them today.......

All of the problems with my Lambdas are now gone, and I can finally enjoy my Exstata to the best of its abilities. Suffice to say, it sounds really freaking good

The bias is still set at the low 140V that I was using for the previous dodgy driver, so I will look to increasing it tomorrow up to the proper value and see what happens.

 

[les_garten]

Quote:

Originally Posted by Beefy /img/forum/go_quote.gif Well, these came in the mail yesterday - minty fresh NOS SR-Lambda normal bias drivers - and I installed them today....... All of the problems with my Lambdas are now gone, and I can finally enjoy my Exstata to the best of its abilities. Suffice to say, it sounds really freaking good The bias is still set at the low 140V that I was using for the previous dodgy driver, so I will look to increasing it tomorrow up to the proper value and see what happens.

Clean as a Hound's Tooth!

 

[paxeaxe23]

Yes thats the one I bought. I realy don't mind it looking the same as other ones as my skills at metal and woodwork are really non-existant. I do actually have a nice 10mm Black front panel that I wlll have someone drill for me when I have time to draw a nice layout which will help, although I was really hoping to kee it for my Hybrid build and am keeping my fingers crossed that I can get started on that one sometime in the next months if Alex does some more boards or anyone has a spare set of Hybrid boards of course (Happy Easter alex

)

Francis

Quote:

Originally Posted by Sathimas /img/forum/go_quote.gif I think it's the same size as mine, 330x280mm (80mm height) Those cases are really high quality, the only problem is that they all look the same as long as you don't put some more effort in making them look unique. Is there still some exstata builder in this thread without headphone? I have a only 5 year old like new SR303 here for sale

 

[runeight]

Quote:

Originally Posted by paxeaxe23 /img/forum/go_quote.gif (Happy Easter alex ) Francis

Thanks. I was actually on an airplane on Easter coming home, but I still had a happy day.

 

[mideel]

I have most of the parts in the mail for an eXStata solid state build, but I need some help in selecting the last 2 parts of my build: Transformer and stax jack.
The Triad Magnetics VPS230-110 as specified in the BOM for the SS build is 2x115VAC (25VA), but in the triad wiring page is described 240-0-240

So can I replace the Triad for a "50 VA 115 VAC (2x), AA-53129"? This transformer is being SOLD as 2x115VAC, but in the datasheet its specified as
"U=110V , Uo = 133,1V (25VA)" for one secondary. Calculating 220V*sqr(2) gives 311V so is the 11V enough headroom for voltage fluctuations etc.?

And what type of jack is the stax jack? I know there is one at alliedelec (Cooper Interconnect 78-S6S), but where can I find a vendor that sells those in europe? Or will I just have to scrap a bunch of molex connectors and just make one myself

 

[Sathimas]

rs components sells them (the stax- jack) in Germany, part number 2508709806

Unfortunately you need to order as a company, but a friend that gives you adress and tax-number of his company should be easy to find.

For the transformer you could also have a look a custom transformers, top-print makes really nice ones.

 

[Beefy]

Quote:

Originally Posted by mideel /img/forum/go_quote.gif The Triad Magnetics VPS230-110 as specified in the BOM for the SS build is 2x115VAC (25VA), but in the triad wiring page is described 240-0-240

I think you are confused. Are you looking at the specs of the primary or the secondary when you see 2x115VAC?

[EDIT] Perhaps that isn't it. Do you realise you actually need two of the Triads?

Quote:

So can I replace the Triad for a "50 VA 115 VAC (2x), AA-53129"? This transformer is being SOLD as 2x115VAC, but in the datasheet its specified as "U=110V , Uo = 133,1V (25VA)" for one secondary. Calculating 220V*sqr(2) gives 311V so is the 11V enough headroom for voltage fluctuations etc.?

Again, is the 2x115VAC for the primary or secondary? I don't think that will be sufficient.

 

[runeight]

Quote:

Originally Posted by mideel /img/forum/go_quote.gif I have most of the parts in the mail for an eXStata solid state build, but I need some help in selecting the last 2 parts of my build: Transformer and stax jack. The Triad Magnetics VPS230-110 as specified in the BOM for the SS build is 2x115VAC (25VA), but in the triad wiring page is described 240-0-240 So can I replace the Triad for a "50 VA 115 VAC (2x), AA-53129"? This transformer is being SOLD as 2x115VAC, but in the datasheet its specified as "U=110V , Uo = 133,1V (25VA)" for one secondary. Calculating 220V*sqr(2) gives 311V so is the 11V enough headroom for voltage fluctuations etc.? And what type of jack is the stax jack? I know there is one at alliedelec (Cooper Interconnect 78-S6S), but where can I find a vendor that sells those in europe? Or will I just have to scrap a bunch of molex connectors and just make one myself

mideel, the transformer you want to use will not work. As beefy says, if you use the triad you need two of them. The transformer specs vary a bit depending on manuf. Some of them specify 115V (230V) for the primary and some specify 117V (234V) for the primary. Similarly for the secondary.

The important feature of the triad is that it is a 1:1 or a 1:2 ratio of voltages depending on its wiring.

In the 1:2 case whatever the mains voltage is will be doubled at the secondary. So if the actual mains is, say, 121V the secondary will be 242V.

For the 1:1 case (Europa) if the primary is 237V the secondary will be 237V.

Using 240V as the secondary spec is a convenient number which is pretty accurate where I live because the mains is 120V and so the secondary will be 240V.

All this to say that I think in Deutschland you need a 1:1 ratio with a 100mA secondary. This would be 230V primary and 230V secondary however that is actually configured. EDIT: And you will need two of these.

Does this help?

 

[mideel]

Ah, yeah I was confused, sorry about that

I was confused about the 250-0-250 since thats just away of saying 500V CT.
Using two 110V secondaries would be 110-0-110 or 220V CT. So if I connect two 230V primary windings parallel, and four 110V secondaries in series that gives me 220-0-220 or 440V CT, but my original question still stands is that enough? given that the transformers are only rated at U=110V , Uo = 133,1V (Voltage unloaded?), or should I pay €15 more for a 250-0-250 Hammond?

 

[runeight]

No, 440VCT will not work. Sorry. If you have a SS amp the triads will work very well. Can you not get these? Or their equivalent?

 

[BoilermakerFan]

Worst case he can get the model R80-36 R-core and use the 230-0-230 taps and lower the zener strings to 282V or so, which had been discussed many pages ago.

115V/230V Hi-Fi Grade 100W R-Core Tranformer for DIYer - eBay (item 110506443693 end time Apr-12-10 08:38:37 PDT)

 

[Postal_Blue]

I would like to apologize to Alex and the proto team. When I asked for one of two sets of boards that became available I did not realize that you guys were still in proto, otherwise i would have held off. After coming to this realization I began shifting funds and selling gears to fund the build. I had come up with the money to make my final order, but unfortunately the Item i sold was fubar'd by the Currier so needless to say I will be refunding that money.

All this to say I have not completed the build and will not likely do so until the end of May when I am expecting some funds to surface. I am sorry for holding up progress, I would certainly like to complete the build but If Alex would prefer it I can send the boards to someone who can build it more quickly. I have partially stuffed the power supply (all but the caps and large transistors) and I have tubes, tube sockets, xformer, Luvdunhill Stax Jack, and all of the PS transistors.

William

 

[Postal_Blue]

and double post