Re: [BUILD] GIX-51X tube preamp
« Reply #200 on: May 15, 2013, 04:46:47 PM »
Thanks Rodney!


Toure14

Re: [BUILD] GIX-51X tube preamp
« Reply #201 on: May 20, 2013, 10:59:47 PM »
where are people sourcing their lundahl trafos and tubes?

Re: [BUILD] GIX-51X tube preamp
« Reply #202 on: May 21, 2013, 07:41:43 AM »
Hi Toure,

You can get both the Lundahls at: http://www.canford.co.uk/

silent:arts also sells Haufe input transformers (Haufe ST8456), just 30€+vat each.

For tubes I highly recommend these Teslas 802S (White print around 60´s yellow print around 70´s) if you want to go for Telefunken quality.

http://www.ebay.de/itm/THE-ULTIMATE-NOS-Matched-Pair-of-Tesla-ECC802S-12au7-ECC82-tubes-Ships-from-US-/181030421911?pt=Vintage_Electronics_R2&hash=item2a26410597

one guy also has these black plates with white print, but I don´t know much about them.

http://www.ebay.de/itm/1-Paar-original-TESLA-ECC802S-Rohren-tubes-ribbed-plate-neuwertiger-Zustand-/171039824397?pt=DE_TV_Video_Audio_Elektronenr%C3%B6hren_Valves&
hash=item27d2c49a0d

regards, Kvothe

Toure14

Re: [BUILD] GIX-51X tube preamp
« Reply #203 on: May 21, 2013, 10:48:29 PM »
Yeah I didn't see the LL1578 trafo which is 1:10 which I want the most I can get out of this pre. plus Tube wise I'm looking for warmth, presence, and color. will I get that with the Telefunken tubes? i though maybe RCA, Mullard, or Apmrex might give me that sound. I hear the telefunken sound is very clen and stresses the high end a bit more.

Re: [BUILD] GIX-51X tube preamp
« Reply #204 on: May 24, 2013, 06:49:15 AM »
Nice NOS RCA, Amperex or Mullard are a good way to go for character and colour,  though they sound quite different from each other. My second pair will have NOS RCA, or Amperex Bugle Boys, if I can afford those.

A question concerning resistors: Is a 250V rating for metal film resistors ok, or should I use the 300V or higher rated?

thank´s for the cart by the way, Toure!

100WChris

Re: [BUILD] GIX-51X tube preamp
« Reply #205 on: June 10, 2013, 10:37:29 AM »
Hi!
I want to design my own frontpanel... can anybody share a ftp-file or a doc with the dimensions for the GIX-51X-Front with me?
Thanks!
Chris

Winetree

Re: [BUILD] GIX-51X tube preamp
« Reply #206 on: June 10, 2013, 12:16:06 PM »
Wanna place an order for parts.
 Is the Mouser Cart up-to-date?

gemini86

Re: [BUILD] GIX-51X tube preamp
« Reply #207 on: June 11, 2013, 01:49:40 AM »
Here's a front panel dimensional drawing I (hastily) drew up. It's in metric, so google is your friend for conversion.

Faceplate Layout

Winetree: You'll have to check with Toure14 about his mouser cart.
- Rodney

"...you better call Kenny Loggins, 'cause you're in the danger zone."

100WChris

Re: [BUILD] GIX-51X tube preamp
« Reply #208 on: June 11, 2013, 04:34:04 AM »
Thanks Rodney!
metric is cool, i live in germany :)
i made a template for FrontDesign.

It´s based on Rodneys dimensions but it is not verified!!!
Maybe someone can compare it to a real faceplate, just to make sure i made no mistake!

You have to rename the file to "fpd" (it is not allowed to upload an fpd-file).
Chris
« Last Edit: June 11, 2013, 04:38:26 AM by 100WChris »

Toure14

Re: [BUILD] GIX-51X tube preamp
« Reply #209 on: June 11, 2013, 10:08:03 AM »
Thanks Rodney!
metric is cool, i live in germany :)
i made a template for FrontDesign.

It´s based on Rodneys dimensions but it is not verified!!!
Maybe someone can compare it to a real faceplate, just to make sure i made no mistake!

You have to rename the file to "fpd" (it is not allowed to upload an fpd-file).
Chris

How do you view it? Your link opens up all weird for me. Do you have a better upload or different picture?


mulletchuck

Re: [BUILD] GIX-51X tube preamp
« Reply #210 on: June 11, 2013, 10:35:57 AM »
rename the file from whatever.txt to whatever.fpd, then open it with whatever app opens a fpd file. 
www.youtube.com/mulletchuck for all my recordings

100WChris

Re: [BUILD] GIX-51X tube preamp
« Reply #211 on: June 11, 2013, 10:46:45 AM »
Its a template for the app FrontDesign from schaeffer:
You have to download their FrontDesign-Software.
Than replace .txt with .fpd and you can design your own faceplate and let scheaffer or someone else with a CNC-machine make the frontplate.

http://www.schaeffer-ag.de/index.php?id=3&L=1

« Last Edit: June 11, 2013, 10:54:00 AM by 100WChris »

Toure14

Re: [BUILD] GIX-51X tube preamp
« Reply #212 on: June 11, 2013, 11:05:47 AM »
got it

gemini86

Re: [BUILD] GIX-51X tube preamp
« Reply #213 on: June 11, 2013, 12:29:00 PM »
I actually have an fpd file, I think I posted it in the original thread, let's see if I can find it.

Okay I found it, but I'm not sure it's up to date. I'll post the last revised file I have while at lunch.
« Last Edit: June 11, 2013, 12:33:54 PM by gemini86 »
- Rodney

"...you better call Kenny Loggins, 'cause you're in the danger zone."

100WChris

Re: [BUILD] GIX-51X tube preamp
« Reply #214 on: June 19, 2013, 05:05:40 AM »
Hi!
First Version of my faceplate  :)

Chris

qmp audio

Re: [BUILD] GIX-51X tube preamp
« Reply #215 on: June 19, 2013, 12:00:19 PM »
Nice.   here's mine.   I did it so it matches all of the other modules i have done.   The switch holes are bored in the back so that the mounting nuts will go on underneath.   Added 2 small screw holes so i can use small black screw to mount the plate to the bracket,  instead of the switch nuts doing this job.  I noticed i have my phase markings reversed though from the one above.  ill need to double check that.


bruce0

Re: [BUILD] GIX-51X tube preamp
« Reply #216 on: June 19, 2013, 12:38:52 PM »
Nice.   here's mine.   I did it so it matches all of the other modules i have done.   The switch holes are bored in the back so that the mounting nuts will go on underneath.   Added 2 small screw holes so i can use small black screw to mount the plate to the bracket,  instead of the switch nuts doing this job.  I noticed i have my phase markings reversed though from the one above.  ill need to double check that.



Regarding those bolts... Can I assume they travel all the way back to the tube board?  If so, please take a look at how close those are to high voltages.  Perhaps you would consider a pair of nuts, with the part that hits the tube board being nylon or something.  Otherwise you are putting a conductor in that lets a person get his finger with in few mm of a tube base.

Alternatively (and very carefully) you could ground the bolts, but on the stock faceplate they would be insulated by the PCB material and only grounded if they were connected to the back, and the back to the case.

Also be aware, if you intend to have the switches have nuts installed on them then silkscreen "Mic" and "150 Hz" might be partially obscured.  This happened to me on the default plates, but I think I was supposed to omit those nuts.

I eventually omitted the nuts.

Sorry if you guys have all this figured.  The design is really tight, and well thought out, and changes to it should be just as well thought out.
« Last Edit: June 19, 2013, 12:47:48 PM by bruce0 »
"it was like heaven on earth, all those transformers" - cj

Toure14

Re: [BUILD] GIX-51X tube preamp
« Reply #217 on: June 19, 2013, 12:43:17 PM »
Nice.   here's mine.   I did it so it matches all of the other modules i have done.   The switch holes are bored in the back so that the mounting nuts will go on underneath.   Added 2 small screw holes so i can use small black screw to mount the plate to the bracket,  instead of the switch nuts doing this job.  I noticed i have my phase markings reversed though from the one above.  ill need to double check that.




would you mind sharing your version of the faceplate or sending me the file... ;D

Toure14

Re: [BUILD] GIX-51X tube preamp
« Reply #218 on: June 19, 2013, 05:00:20 PM »
In regards to these faceplates. Is there a way to get the center holes to line up all the way. I think the Hi-Z hole is off center from the rest of the holes (a bit farther to the left)  in the mid section? would adding some spacers be simple or no?

100WChris

Re: [BUILD] GIX-51X tube preamp
« Reply #219 on: June 19, 2013, 05:18:05 PM »
Very nice gunpoint :-)
i´m was not sure about the phase switch, i guess gunpoint version is right.
I guess you can raise the DI-Input or mount it on the plate and connect it with short wires, but better let Rodney confirm this...
Chris
« Last Edit: June 19, 2013, 06:05:46 PM by 100WChris »


 

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