Coop

Neve 1073 Module Build
« on: March 24, 2020, 11:26:11 AM »
Hi  :)

A while ago I bought 4 1073 cases from Beebird Audio and till now I didn't find time to finish them. I'm usually working as an FOH engineer and since there are no events in Austria due to Covid19, I decided to finish two of the modules.

Today I wanted to try the first channel, just with a BA283 in the module. I do get clean Audio in the first Amplifier Stage, the Gain Pot seems to work, but once it hits the second stage things do get weird.
First off all Audio gets super distorted and R7 gets really hot. So I think I messed up my +24V wiring.

I followed the original Neve schematic.

A --> 0V
B --> VTB1148 Pin 1
J --> connected to A and V
L --> External Fader
M --> +24V via 12 Ohm Resistor, VTB1148 Pin 3
N -->  +24V via 270 Ohm Resistor
P --> External Fader
S --> Connected to U via 18K Resistor
T --> Gain Switch
U --> Gain Switch
V --> Connected to J

What did I mess up? Does anyone have an idea?

Best wishes,
Johannes

« Last Edit: May 19, 2020, 02:11:58 PM by Coop »


Coop

Re: Neve 1073 Module Build
« Reply #1 on: May 19, 2020, 02:12:11 PM »
UPDATE

I finally found time to post some updates on the modules. Everything is working fine now. As usual it was just a minor problem. Installed the trim pot on the BA283 board the wrong way.

Gain Stages are now all working correctly, EQ is working and I measured both modules and they are nearly identical. In lack of a real 1073 I couldn't compare them too, I thought it would be fun to see how different they are to the Waves Scheps73.

I will post some pics of the measurements later.  For now just some of the finished modules. Two more are already on the bench waiting for their transformers and pots :D










ruffrecords

Re: Neve 1073 Module Build
« Reply #2 on: May 19, 2020, 06:20:50 PM »
Cool. I like those Beebird frames. Did you make your own front panels?

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Ricardus

Re: Neve 1073 Module Build
« Reply #3 on: May 19, 2020, 10:35:29 PM »
Whoa... what's this? Where do I get me some of THAT?!
Audio mastering for hire..

Coop

Re: Neve 1073 Module Build
« Reply #4 on: May 20, 2020, 04:40:31 AM »
Thanks Ian! :)
The frames are super awesome. The quality is really amazing. Never had the chance to grab a real vintage module, but it definitely feels like one.  No, the front plates were included with the frames.

@Ricardus
Those are frames and PCBs made by Beebird Audio. Bought 4 of those. 2 units already finished, the second 2 are waiting to be done.

Some more pics and screenshots of the measurements I did














ruffrecords

Re: Neve 1073 Module Build
« Reply #5 on: May 20, 2020, 06:10:24 AM »
Thanks Ian! :)
The frames are super awesome. The quality is really amazing. Never had the chance to grab a real vintage module, but it definitely feels like one.  No, the front plates were included with the frames.
They are very reminiscent of the ones I saw at Neve back in the 70s. Odd about the front panels because the ones on their web site show their own logo not the Neve one.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Coop

Re: Neve 1073 Module Build
« Reply #6 on: May 20, 2020, 08:06:09 AM »
Yeah, the front panel thing is odd. But I'm still waiting for replacement ones because I originally ordered vertical ones. Will be interesting which logo they have on.

Any guess why my Low Frequency curves look so different compared to the plugin ones?

critterkllr

Re: Neve 1073 Module Build
« Reply #7 on: May 20, 2020, 10:23:33 AM »
Around how much per module did these cost you to build? I’m interested in building a few.

Winetree

Re: Neve 1073 Module Build
« Reply #8 on: May 20, 2020, 02:52:42 PM »
I have 4 of the 1084 kits sitting on the shelf.
This is sparking my interest in starting the project.

Coop

Re: Neve 1073 Module Build
« Reply #9 on: May 20, 2020, 06:25:10 PM »
@critterkllr
I'm not exactly sure but I think around 900€ per module, not including a PSU and a rack. I will write the exact costs down in the next couple of days I think :)

@Winetree
Do it :D I will try to post some sound samples soon. All recording sessions got canceled in the last weeks, but I do have a nice drum recording coming up in June.


ruffrecords

Re: Neve 1073 Module Build
« Reply #10 on: May 20, 2020, 07:42:19 PM »
Any guess why my Low Frequency curves look so different compared to the plugin ones?
Plug in is a simple model of a complex system.

Cheers

Ian
www.customtubeconsoles.com
https://mark3vtm.blogspot.co.uk/
www.eztubemixer.blogspot.co.uk


'The only people not making mistakes are the people doing nothing'

Coop

Re: Neve 1073 Module Build
« Reply #11 on: May 21, 2020, 04:14:04 AM »
Plug in is a simple model of a complex system.

Cheers

Ian

Oh yes that's right. It's a very complex system  :D At least for me, never built anything like that before.


 

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