Would Topographer dist. sound better with the proper 42TL218? Or any 10k:10k wind ratio will do (like the 42TM018?)

xefned

xefned

Well-known member
Whoops, I bought the 42TM018 for my Topographer, and when I went to build it discovered the BOM calls for the smaller footprint 42TL218. Both have the same winding ratio (10k to 10k ratio from primary to secondary.) So I'm sure it will work, but will it sound as good?

What I know:
TransformerPrimary ResistanceSecondary Resistancenotes:
42TL218 (smaller footprint)715 Ω583 ΩThe Topographer is based on a particular "audio experiment," which I presume refers to the “Dudette Incredible.”
42TM018 (larger footprint)550 Ω500 ΩUsed in the (lesser) Aion Isotope.
 
A larger primary resistance is harder to drive? Resulting in less gated cutout when the transformer is overdriven?
Or smaller core is easier to saturate?

I imagine any answer would be along the lines of “it doesn't @!#?@! matter; use the part you have on hand.”
 
There’s more difference than size, isn’t there? 218 v. 018 will probably be a difference…
 
This look legit for a 42TL series Xicon transformer?

I swore I'd only buy such things from legit distributors like Mouser, but they were so much cheaper on Amazon. The primary sides measure 500+Ω rahter than 700+Ω. The secondaries are 400+Ω rather than 500. Should I be concerned?


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