do0g

a Dual LA2A - the [silent:arts] version
« Reply #40 on: September 17, 2008, 08:26:20 AM »
A stereo set for me as well thanks, shipped to the UK.

Thanks!


a Dual LA2A - the [silent:arts] version
« Reply #41 on: September 17, 2008, 11:02:08 AM »
i'd take another pcb if you have one

RedNoise

a Dual LA2A - the [silent:arts] version
« Reply #42 on: November 10, 2008, 04:34:14 PM »
Hi there...Is there a build thread somewhere???I just received my snow pcbs. :thumb:
Volker : what brand of 10µF/630V & 100nF (made in france) did you use please??
Custom power tran from Rondo right?
Thanks...
If your neighbour is hunger : don't give him fish , teach him how to fish ...
if you don't like it don't buy it ;-)  [Wolker Texas Ranger] ( ;-) )

[silent:arts]

a Dual LA2A - the [silent:arts] version
« Reply #43 on: November 10, 2008, 04:43:15 PM »
Quote from: "RedNoise"
Hi there...Is there a build thread somewhere???I just received my snow pcbs. :thumb:
Volker : what brand of 10µF/630V & 100nF (made in france) did you use please??
Custom power tran from Rondo right?
Thanks...

build thread in franks forum: http://www.nrgrecording.de/nrg/viewtopic.php?t=405
(would be redundant to do another one here)
the "made in France" cap is a Solen Fast (a canadian brand AFAIK)

RedNoise

a Dual LA2A - the [silent:arts] version
« Reply #44 on: November 10, 2008, 04:45:46 PM »
Thx Volker!
Got to register @ NRG. :green:
If your neighbour is hunger : don't give him fish , teach him how to fish ...
if you don't like it don't buy it ;-)  [Wolker Texas Ranger] ( ;-) )

Kingston

a Dual LA2A - the [silent:arts] version
« Reply #45 on: November 11, 2008, 03:16:37 AM »
Quote from: "[silent:arts
"]I have had problems with gain over "7" (may be this grid stopper thing), but I changed the gain pot to a 22K log in series with a 75K resistor to get an easier to adjust gain range (still 26dB gain - enough for a compressor / limiter).


Could you provide more info about this? Is this related to your PCB version, or a more general LA2A problem?

Have you or anyone looked at it in detail and was it ever completely solved?

[silent:arts]

a Dual LA2A - the [silent:arts] version
« Reply #46 on: November 11, 2008, 03:35:36 AM »
I would say it is more a general LA2A issue. the D-LA2A rev02 PCBs have places for gridstopper resistors, shouldn't be a problem with them.

[silent:arts]

Re: a Dual LA2A - the [silent:arts] version
« Reply #47 on: April 07, 2017, 02:47:31 AM »
Gentlemen, may I present you the [silent:arts] D-LA2A
I can't believe this was 10 years ago  :o

Re: a Dual LA2A - the [silent:arts] version
« Reply #48 on: May 25, 2017, 09:46:05 PM »
This is absolutely incredible, definitely adding this to my to-do list.

Re: a Dual LA2A - the [silent:arts] version
« Reply #49 on: February 24, 2019, 12:31:14 PM »
I'd like to build my own Dual LA2A with this front panel:
Can somebody please help me where to start?
Thanks a lot.

 
« Last Edit: November 02, 2019, 06:11:52 AM by MiamiBoy »


Re: a Dual LA2A - the [silent:arts] version
« Reply #50 on: March 04, 2019, 09:06:33 PM »
The Dual LA2A build thread is a good place to start. 96 pages of information are waiting for you. There is no step-by-step quide. Just start reading, it is all there. nobody else will do it for you. Have fun!
https://groupdiy.com/index.php?topic=32677.0
« Last Edit: March 04, 2019, 09:24:16 PM by rock soderstrom »

[silent:arts]

Re: a Dual LA2A - the [silent:arts] version
« Reply #51 on: March 05, 2019, 01:44:44 AM »
There is no step-by-step quide.
Yes. And no kits. This is an old school project.
From the times when you have been lucky to only have a schematic and a working PCB.

dmp

Re: a Dual LA2A - the [silent:arts] version
« Reply #52 on: March 05, 2019, 11:07:46 AM »
I'd like to build my own Dual LA2A with this front panel:
Can somebody please help me where to start?
Thanks a lot.

 

I built one in a 2U case like that and you need to make sure the tubes are not too high so the lid doesn't hit them. Keep it in mind as you source parts (tube sockets, standoffs)
I think there is some info in the thread about it.

Re: a Dual LA2A - the [silent:arts] version
« Reply #53 on: October 26, 2019, 02:50:42 AM »
Yes. And no kits. This is an old school project.
From the times when you have been lucky to only have a schematic and a working PCB.

You still sell some of the items, right?
Did you create the BOM?
It's outdated unfortunately.. Some part numbers doesn't exist.
Also the price has gone up like 20%, so you can tell it's been a while since it was created :)

Any help appreciated for this build.
96 pages of info seems overwhelming and confusing.

[silent:arts]

Re: a Dual LA2A - the [silent:arts] version
« Reply #54 on: October 26, 2019, 03:10:38 AM »
You still sell some of the items, right?
Yes. The PCB and the PSU transformer.

Did you create the BOM?
It's outdated unfortunately.. Some part numbers doesn't exist.
Also the price has gone up like 20%, so you can tell it's been a while since it was created :)
My BOM is pre RoHS and from 2007 and wouldn't help anyone.
You will learn a lot doing your own BOM, it isn't really that hard.

Re: a Dual LA2A - the [silent:arts] version
« Reply #55 on: November 07, 2019, 12:47:30 PM »
Silent:Arts,

I cant believe its been 7 years since my LA2A was fired up!  Glad this project has had success.  I'm really busier now and don't have time to do the things I always want to do.  I'm eyeing mine and knowing it needs new tubes and calibration, I'm afraid I'll need to deliver it to my excellent tech for service.  Anything I should tell him? I'm assuming the schematic is all he'll need. My memory is crap...  :-[

I was always curious as to hoe one made this a true stereo unit without matching TB4s?  I'm planning on using this for a blues album in mixing soon enough.  Hope all is well with you!


[silent:arts]

Re: a Dual LA2A - the [silent:arts] version
« Reply #56 on: November 07, 2019, 01:18:48 PM »
I'm not sure if I understand your question correctly.
Why do you think it needs new tubes? Only because it is 7 years old?


 

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