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Help, Anyone know what's this transformer?

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Bartronics:
Sorry if this is a dumb question, but does anyone know precisely what kind of transformer this is... indicated  on the schematic and BOM?

I have a project I'm putting together and I've got most of the parts, but I'm not quite sure what this one transformer is?
Is that 8 Ohms and 1 watt? Or is that 8 ohms and 1:1. I'm confused?


Thanks in advance!

Bartronics:
I keep thinking its something like this? Maybe?

https://www.amazon.com/10pcs-1300-Transformateur-Transformador-Amplification/dp/B0836MJP6J/ref=sr_1_1_sspa?crid=2IN8RRUZ01O2N&keywords=Audio+Transformer%2C+8+ohms&qid=1642809273&sprefix=audio+transformer%2C+8+ohms%2Caps%2C111&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzVExGWDJYQ0o3VlU4JmVuY3J5cHRlZElkPUEwODM1MDE3MlJJREZIRzVQNTZTViZlbmNyeXB0ZWRBZElkPUEwODI4Nzk1MldXVzREQkczUU44RyZ3aWRnZXROYW1lPXNwX2F0ZiZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

Bud:
8 Ohm to 1000 Ohm impedance transformer.

Bartronics:
Ok thanks a lot, that makes sense actually... 8/1 K.
The part about it being a matching transformer was throwing me off since there isn't two of them, wasn't sure if that meant matching windings like a 1:1?

Bud:
Impedance ratio is proportional to turns ratio squared. 1000/8=125 impedance ratio. Square root of 125 is 11.18, we take 11 as integer turns ratio. So you will need 1:11 turn ratio transformer, the winding with less turns connected to 8 Ohm side.

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