Transformer to Autoformer

discussion of magnetic volume control design for both line and speaker levels.

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izzy wizzy
Posts: 64
Joined: Sun Jun 26, 2005 8:38 pm
Location: Folkestone, UK

Transformer to Autoformer

Post by izzy wizzy »

Now I realise this is not anything to do with a slagleformer AVC but here goes anyway.

I have a Olson style Raven preamp/headphone amplifier with a Sowter 9335 TVC on the output driving Senn HD650 headphones. So I got the clip leads out and disconnected the primary and connected the secondary up direct like an AVC.

As usual, I haven't measured anything but the sound seems quite amazing. Am I missing something? Could there be a wrinkle in there that I'm being seduced by? Is it just a lucky coincidence? It's not designed to do this so I wonder what technical issues I could be having.

cheers,

Stephen
dave slagle
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Joined: Sat Jan 22, 2005 3:54 am
Location: NYC
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Post by dave slagle »

I think a frequency sweep of both connections would tell you a lot... I have measured a few TVC's in the intended hookup and as autoformers and the autoformer hookup (just using the secondary) has measured better.

dave
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