eXStatA Build Thread II

[Forte]

Quote:

One more thing: why does the power supply silkscreen has R13 and R14 with a diode symbol? I thought it should be a resistor instead, since that is what the PS schematic shows (47K R)

Have a look here http://www.cavalliaudio.com/exstata/main.php?page=schematics/maxedsupply

 

[gilency]

OK thank You. I did not read the maxed out power supply because I did not think it applied to what I have, but it is an easy enough option I'll go ahead with it.

 

[sachu]

^^ yes its fine..however, you asking such questions makes me nervous for you and this build.

 

[gilency]

Quote:

^^ yes its fine..however, you asking such questions makes me nervous for you and this build.

Don't be. Yes, I am pretty new to this but I can assure you I am double checking and triple checking every step of the process. 

 

[ktm]

Here's a casing option for some of the new builders. A Nabu box with a cheap piece of wood from Lowes and a grate cut into the cover to vent.

 

[gilency]

The wood really dressed up the case. Very nice!
Could yo post the H-W-D of the enclosure?

 

[ktm]

It was linked in one of the other exstata threads.
Here's the info and where to get it.
http://www.surplussales.com/cab-rackshardware/encl_2.html

 

[gilency]

I finished populating both the PS and SS boards, except for the darn J271's. I had to order 100 of them Hopefuly I'll get a matched quad.

 

[gilency]

Have any of you used these switches? 
http://www.mouser.com/ProductDetail/Bulgin/MP0045-1E2GN012/?qs=sGAEpiMZZMvxtGF7dlGNplr9LVjb3l8KS%252bIz5FPAvA0%3d

 

[BoilermakerFan]

Quote:

Have any of you used these switches? 
http://www.mouser.com/ProductDetail/Bulgin/MP0045-1E2GN012/?qs=sGAEpiMZZMvxtGF7dlGNplr9LVjb3l8KS%252bIz5FPAvA0%3d

Sachu and I use the non-illuminated version.  My only gripe is that the "off" position is with the button in and flush, not extended. 

 

[sachu]

Not this one Brian. I use this.
 
http://www.mouser.com/Search/ProductDetail.aspx?R=MP0045/3E0NN000virtualkey15070000virtualkey117-MP0045/3E0NN000
 
 

 

[gilency]

After testing 130 J271's,

I (finally) have 4 sets of matched quads:
 
a) 10.0-10.43     b) 10.58-10.90       c) 11.32-11.86        d) 12.50-13.36
 
Which ones should I use?

 

[BoilermakerFan]

C or D.  D is better since it's the highest group but the range is a little wider. 

 

[runeight]

Quote:

After testing 130 J271's,

I (finally) have 4 sets of matched quads:
 
a) 10.0-10.43     b) 10.58-10.90       c) 11.32-11.86        d) 12.50-13.36
 
Which ones should I use?

Sorry about this. We actually did test this some during the proto. IIRC everyone was able to find at least one quad in 20 jfets. Not a perfect statistical sample, but it seemed to hold pretty well for everyone. I was able to get several quads in two separate buys of 20 each.
 
130 jfets is a lot to say the least.

 

 

[pabbi1]

Now I remember why I buy matched quads... it is good to have friends that do that sort of thing. Sounds like you are closing in on it Enrique...
 
Ok, last call for 6s4a - I have about 20 odds and sods (RCA, Sylvania, GE and Westinghouse) - $25 shipped US.All NOS.
 
I also have a half dozen 6s4, postage only.