A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

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mediatechnology
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by mediatechnology » Tue Apr 02, 2019 4:55 am

My Mom had a Round Tuit in her kitchen which is now my kitchen.
I need to find her Round Tuit.

I do need some goats - They'd take the privet out in one or two years.
But I'd need a mule to protect the goats from the coyotes.

I have neighbors with goats - my nextdoor has chickens and they're a big coyote and fox attraction.

To connect to the PCM4222 I use SPDIF > EMU-0404 > PCI Bus.
The EMU-0404 has its own console and DSP mixer.
I mostly use ASIO for routing.
The D/A is the EMU-0404 internal.

billshurv
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by billshurv » Tue Apr 02, 2019 5:34 am

Llama? They are good at keeping things with big sharp teeth at bay! I did nearly get one when I have about an acre around the house.

terkio
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by terkio » Tue Apr 02, 2019 8:35 am

Thanks a lot for your help.
I sure need a "round tuit", I have high grass waiting for me.
At that place in the countryside my grand father had a couple of goats, the goat keep is still there, ready for new goats.

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JR.
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by JR. » Tue Apr 02, 2019 8:59 am

I have a small round "tuit", on an old keychain, just a small flat chrome plated disc with TUIT printed on it. :lol:

JR

PS: Sorry about the veer

billshurv
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by billshurv » Tue Apr 02, 2019 11:59 am

I am just happy that TUITs are now international :).

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mediatechnology
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by mediatechnology » Wed Apr 03, 2019 7:09 pm

Well I've gotten "a round tuit" and have started the layout.
Once I get started it becomes like solving a puzzle and I enjoy it.

billshurv
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by billshurv » Thu Apr 04, 2019 4:44 am

You need to write 'Zen and the art of PCB layout' :)

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mediatechnology
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by mediatechnology » Sat Apr 06, 2019 9:51 am

I couldn't find the "round tuit" but I did find the "got tuit."

I've finished hand-routing the board.
It's 4.1 x 3.1" so it grew a little bit from the moving magnet layout.
I may see if I can squeeze it a little more: It just barely fits in a Hammond 1590BB.
A 1590J has a little more room.

I need to do component designators and then quadruple-check the routing and mechanical.

I'll probably submit the layout Monday for a pre-production run of 4 boards with a two day turn and two day shipping.
You need to write 'Zen and the art of PCB layout' :)
Once I get "in the mood" its hard to pull away from it.
Pulling away from it for a couple of days and coming back to it is always good though.

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mediatechnology
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by mediatechnology » Sat Apr 06, 2019 5:50 pm

Couldn't find the "round tuit" but did find the "gone-n-dunnit" also known as "git-er-done."

Image

I'm a lot closer than I was this time yesterday.
I need to go back and harmonize the schematic to the actual layout because a couple of things got changed in layout WRT op amp sections, the order of some series loops and designators.
Also removed some redundant test points.
Once I get an updated sch I'll start re-checking routes.

terkio
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Re: A Low Noise Balanced Input Moving Coil Preamp Using the ZTX851

Post by terkio » Sun Apr 07, 2019 8:35 am

Beautiful.

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