PRR

Re: DIY Neve 1073 +EQ
« Reply #20 on: August 03, 2018, 09:57:58 PM »
Shields.


Michael Tibes

Re: DIY Neve 1073 +EQ
« Reply #21 on: August 06, 2018, 05:46:27 AM »
To me it looks like it is a screen.

Michael

ilfungo

Re: DIY Neve 1073 +EQ
« Reply #22 on: August 06, 2018, 07:47:01 AM »
Thanks!
U and P screen are connected to V?

mic input transformer need to be wired as 1:4?
line input transformer need to connect pins 9 to 10
and 7 to 8?
Thanks!
« Last Edit: August 06, 2018, 08:06:16 AM by ilfungo »

ilfungo

Re: DIY Neve 1073 +EQ
« Reply #23 on: August 08, 2018, 11:56:39 AM »
 ???

wlinart

Re: DIY Neve 1073 +EQ
« Reply #24 on: August 08, 2018, 01:28:10 PM »
Thanks!
U and P screen are connected to V?

mic input transformer need to be wired as 1:4?
line input transformer need to connect pins 9 to 10
and 7 to 8?
Thanks!

I'm not an expert, but trying to help.

Mic input transformer is connected to a switch for high impedance and low-impedance. So depends on using it as high (1k2ohm) or low (300ohm) input impedance. I suppose you're using carnhill vtb9045 transformers? If so:
- low impedance: connect pin 2 to 3, and 4 to 5
- high impedance: connect pin 4 to pin 3
in both cases pin 2 and 5 to xlr
also connect pin 8 and 9

Line input transformer:
- pin 9 to 10
- pin 7 to 8
- pin 3 to 4

ilfungo

Re: DIY Neve 1073 +EQ
« Reply #25 on: August 08, 2018, 02:21:41 PM »
Thanks wlinart!

ilfungo

Re: DIY Neve 1073 +EQ
« Reply #26 on: August 10, 2018, 07:36:35 AM »
Hi
It's possible to add a DI/IZ input to 1073?
thanks!

wlinart

Re: DIY Neve 1073 +EQ
« Reply #27 on: August 10, 2018, 07:42:03 AM »
Hi
It's possible to add a DI/IZ input to 1073?
thanks!

Yes, with the carnhill VTB9072 for example.

ilfungo

Re: DIY Neve 1073 +EQ
« Reply #28 on: August 10, 2018, 09:29:07 AM »
Ok
but it's possible without an additional transformer?
Thanks!

wlinart

Re: DIY Neve 1073 +EQ
« Reply #29 on: August 10, 2018, 11:06:29 AM »
Yes, with something like this for example: https://www.jlmaudio.com/shop/fet-di.html?display_tax_prices=1


ilfungo

Re: DIY Neve 1073 +EQ
« Reply #30 on: August 10, 2018, 03:08:24 PM »
Thanks wlinart
But I'm searching a schematic for DIY version...

wlinart

Re: DIY Neve 1073 +EQ
« Reply #31 on: August 11, 2018, 01:50:54 PM »
Search a little bit, and you can find a lot of options.
Here are a few:
- https://groupdiy.com/index.php?topic=2114.0 i think this one would be a great choice, since this is designed for a neve
- http://www.jensen-transformers.com/schematics/ schematic AS004, fet DI, i guess kind of similar to the JLM
- http://sound.whsites.net/project35.htm 3rd schematic, opamp based


 

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