Beau

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #21 on: February 10, 2018, 05:37:59 PM »
Build this kit a few weeks ago. Waiting for the last tube to arrive as I accidentally ordered a 6e5GT which I thought was the same as a 6e5C but the pin-out is different after all. Should have a 6e5 coming in early next week tho :)

Can anyone that has build these kits shed some light on wether they need any calibration? The circuit does have a trim pot but I'm unaware of its purpose.

Beau

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #22 on: February 12, 2018, 10:41:16 AM »
Got the last tube in today and assembled the unit in it's chassis. One small thing that I hope here someone can tell me if thats fine or  problematic; I measure 241vdc at testpoint 10. Any reason for concern or fine as is?

If anyone else has some hints as how to check the unit for proper operation, happy to hear! Leaving it on for some hours now to see if no smoke arrises and then will test it later this week with some audio passing trough :)

Beau

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #23 on: February 12, 2018, 11:12:04 AM »
I also inquired with Colin from AML on these subjects, I'll share it here in case people run into the same questions;
 
You can set the HV voltage with R41 (it is SOT ... select on test)... personally I would not bother... it is within 10% anyway... and it will change with different valves.
 
The only adjustment we do is the trimmer which sets the sensitivity of the magic eye tube.

Majestic12

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #24 on: August 04, 2019, 05:47:22 AM »
I've just finished my ez627 kit :)




Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #25 on: August 04, 2019, 05:06:34 PM »
Wow, ultra clean built! 👍I like the magic eye, of course!

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #26 on: August 04, 2019, 07:42:46 PM »
I love the magic eye too! Hope to see this more on DIY kits and projects :)

is this kit/project still available? PCBs somewhere?

Majestic12

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #27 on: August 05, 2019, 05:45:22 AM »

is this kit/project still available? PCBs somewhere?

Sure, you can buy a kit at the Audio Maintenance Limited online store.

TillM

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #28 on: August 05, 2019, 07:56:34 AM »
Markus I’m always impressed from your work desk.  ;)
Nice to see this equalizer.

PS: your package arrived  :D

jensenmann

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #29 on: August 15, 2019, 03:28:34 AM »
Congrats, Markus! So how does it sound?
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort


Majestic12

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #30 on: August 18, 2019, 05:04:14 AM »
Congrats, Markus! So how does it sound?

It is superb on kick and bass. Much tighter than a Pultec and it allows you to distort the frequency bands you are going to boost.

petermontg

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #31 on: August 26, 2019, 08:47:10 AM »
Sure, you can buy a kit at the Audio Maintenance Limited online store.


Hi majestic

Where do you pick up your Mu shielding.

Best
Peter

Majestic12

Re: Christmas offering.... Fairchild Valve EQ ..... ez627
« Reply #32 on: August 28, 2019, 05:51:29 AM »


Hi majestic

Where do you pick up your Mu shielding.

Best
Peter

I don't understand. Which Mu shielding?
Do you mean the shielding box around the power supply section ? It's part of the kit from AML.