Dlator w/ disproportionate value

angelodp · Post by **angelodp** » Mon Apr 11, 2011 2:14 am

I am converting one of my Dlators ( seemed to work just fine ) over to series/parallel function. In doing so I noticed that I had an incorrect value for the RC off of pin 8. Instead of 47uf/1k3 I had .47uf/1k3 ? As I mentioned the unit seemed to work fine. What did that disproportionate value do to the circuit?

Ange

martin manning · Post by **martin manning** » Mon Apr 11, 2011 3:25 am

You'll lose a lot of bass response. The 47u will bypass the cathode resistor down to 5 Hz, whereas the 0.47 will only bypass down to 500Hz (at the -3 dB point). I'd definitely swap that for the correct value.

angelodp · Post by **angelodp** » Mon Apr 11, 2011 4:08 pm

Martin, can you point me to a good primer on understanding HZ

Ange

martin manning · Post by **martin manning** » Mon Apr 11, 2011 4:22 pm

angelodp wrote:Martin, can you point me to a good primer on understanding HZ

The best and most concise package for this kind of thing that I know of is the common-cathode gain stage document on the Valve Wizard's site.

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Dlator w/ disproportionate value

Dlator w/ disproportionate value

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