Hi1
Fellas, i was wondering if any of you could help me out.
After searching (a lot!) through the internet, i managed to get an idea of a composite RIAA equaliser. Here's the page:
http://www.users.globalnet.co.uk/~valveamp/RIAAStageDesign.htm
How do i couple it to the circuit above?
I also thought about a graphic equaliser and set the curve manually, but they are expensive!
Thank you all (and sorry if i might sound lazy🙁)
Francisco
Fellas, i was wondering if any of you could help me out.
An externally hosted image should be here but it was not working when we last tested it.
After searching (a lot!) through the internet, i managed to get an idea of a composite RIAA equaliser. Here's the page:
http://www.users.globalnet.co.uk/~valveamp/RIAAStageDesign.htm
How do i couple it to the circuit above?
I also thought about a graphic equaliser and set the curve manually, but they are expensive!
Thank you all (and sorry if i might sound lazy🙁)
Francisco
So, i could connect it to a EF86 triode stage...
What bothers me is if it will have too much gain (150 + 25)...
What bothers me is if it will have too much gain (150 + 25)...
What bothers me is if it will have too much gain (150 + 25)...
Gain will in fact be 150 TIMES 25 divided by the equalisation filter loss.
Converting to decibels, 150 is 43.5dB, 25 is 28dB and we can take insertion loss as 20dB thus your overall gain comes out to
43.5 + 28 - 20 = 51.5dB which is fine.
Going back to raw gain figures : 150 x 25 / 10 = 375
Brian.
Gain will in fact be 150 TIMES 25 divided by the equalisation filter loss.
Converting to decibels, 150 is 43.5dB, 25 is 28dB and we can take insertion loss as 20dB thus your overall gain comes out to
43.5 + 28 - 20 = 51.5dB which is fine.
Going back to raw gain figures : 150 x 25 / 10 = 375
Brian.
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