Diy DI Box with ty 250-p 1:1 transformer

[joaopgcc]

Hi guys, first post in this forum.

I am trying to build a DI Box with an ty 250-p transformer.
This transformer is very linear in his frequency response, and I tested it for core saturation purposes earlier for another project and find out that it accepts 5V without clipping or making resonances .

But now Im having troubles with resonances around 1k/2k when I use it as a DI Box transformer, specially with passive bass. I do not know how to avoid those resonances.
I am comparing it with a palmer passive DI box.

I am doing this type of circuit

And this is the datasheet of the transformer

https://www.google.com/url?sa=t&sou...FjACegQICRAC&usg=AOvVaw2TSbSlK1NplrnO6Shoa6k6

Can someone tell me what to do to avoid these resonances?

Thanks

 

[PRR]

The transformer is rated 1K impedance.

Driven from a low-impedance source (signal generator, mixing console) it will be very flat.

Electric bass is over 10K impedance. I would expect significant loss of level and frequency response.

That link is a lot of tracking number. This would be enough:
https://catalog.triadmagnetics.com/asset/ty-250p.pdf

 

[joaopgcc]

Hum I see. Maybe I need to find another transformer for this purpose with 10 times the bass impedance (like the mic preamps) ? Or can I change the input impedance with this?

Thanks!