Anyone managed to 'cure' the apparent inherent Microphonics in Nuvistors? I have several NOS in different makes, but the GE ones seem the best, while RCA are Pants! Tung-Sol a close second to the GE
My SE breadboard used a Nuvistor 6CW4, in the front end Mu stage, but I had to dump it in favour of an ECC 91 strapped out.
I feel something in the sound has been lost, but cant say exactly what.
It still sounds real good though.............
Be nice to go back to the 6CW4, if I could just cure that one fault. It sounds very transparent and with great presence with the Nuvistor.
Even thought of fitting it in a lead-lined box, but gave that up as a bad joke!
My SE breadboard used a Nuvistor 6CW4, in the front end Mu stage, but I had to dump it in favour of an ECC 91 strapped out.
I feel something in the sound has been lost, but cant say exactly what.
It still sounds real good though.............
Be nice to go back to the 6CW4, if I could just cure that one fault. It sounds very transparent and with great presence with the Nuvistor.
Even thought of fitting it in a lead-lined box, but gave that up as a bad joke!
Aha! There's a thought!
Never thought of that eventuality, thought my grid-stopper would take care of it. Didnt notice anything on the 'scope, but it may well have been beyond my old Tek 454 range of 200MHz!
Back to the drawing board maybe!
Never thought of that eventuality, thought my grid-stopper would take care of it. Didnt notice anything on the 'scope, but it may well have been beyond my old Tek 454 range of 200MHz!
Back to the drawing board maybe!
Alastair E said:
The "piiiiiiiiiiiing."
Nuvistors sing. Suspension is everything if you're determined to use them in a transparent circuit. If you like the coloration that the microphonics give, and there's nothing wrong with that, this is an opportunity to tune the sound with various bits of rubber, wood, metal, and putty.
PiiiiiiiiiiiiiiNg
They certainly have quite a unique sound when you tap the things!
Perhaps, its the very slight accoustic feedback derived microphonics that Im finding appealing
My 'Other Half' always said Im funny in the head!🙄
They certainly have quite a unique sound when you tap the things!
Perhaps, its the very slight accoustic feedback derived microphonics that Im finding appealing
My 'Other Half' always said Im funny in the head!🙄
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