Is this good substitute for Octavia transformer?

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Frank Triggs
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Post by Frank Triggs »

Will this audio transformer (429-7216-RC) be a good choice for an Octavia clone? It's shielded and ever so slightly smaller. More expensive but an improvement maybe?

429-7216-RC
https://www.mouser.co.uk/ProductDetail/ ... Ycvw%3D%3D

The schematic I have recommends this one:
42TM022-RC
https://www.mouser.co.uk/ProductDetail/ ... 84iw%3D%3D

But also mentions that this one can be used with no apparent difference to the sound:
42TM018-RC
https://www.mouser.co.uk/ProductDetail/ ... GXLA%3D%3D

Thanks.
Music is a sculpture in time and space...

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Frank Triggs
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Joined: 16 May 2021, 11:03
my favorite amplifier: Marshall JCM800 2204
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Post by Frank Triggs »

No, it's no good. Found that the transformer needs to have 3:1 impedance ratio.

The 42TM011-RC is used in the general guitar gadgets version, and that sounds amazing. So I'll use their schematic instead.
Impedance = 1.5k : 500ohm.

Shootout video between Roger Mayer, Chicago Iron, Voodoo Lab and General Guitar Gadgets.
Music is a sculpture in time and space...

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