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#1 PL36 Sweep Tube
Posted: Sun Sep 23, 2018 3:56 pm
by Cressy Snr
Now then!
I found a few NIB Mazda PL36 in the miserable couple of boxes of what's left of my valve collection. I found them in a box of rectifiers.
IIRC, these B&W TV line output valves, are indescribably awful as audio pentodes, but as triodes, they are incredibly linear.
Has anyone ever in the dim and distant past, built anything with these?
#2 Re: PL36 Sweep Tube
Posted: Sat Sep 29, 2018 9:55 pm
by Ami
Hi there.
Dad built a self split class A P/P with two of those. It ran on quite low HT. He used this circuit as inspiration
http://www.b-kainka.de/roehren/Schaltung4.gif full article
http://www.b-kainka.de/roehren/gegentakt.htm. (in German)
I have Dad's notebook with details of his version in but no way to scan it at the mo!
He built it as part of a guitar amp for Mum expecting some interesting distortion but was surprised how clean it sounded.
Luv, Ami.
#3 Re: PL36 Sweep Tube
Posted: Tue Oct 02, 2018 11:35 am
by Cressy Snr
Ami wrote: ↑Sat Sep 29, 2018 9:55 pm
Hi there.
Dad built a self split class A P/P with two of those. It ran on quite low HT. He used this circuit as inspiration
http://www.b-kainka.de/roehren/Schaltung4.gif full article
http://www.b-kainka.de/roehren/gegentakt.htm. (in German)
I have Dad's notebook with details of his version in but no way to scan it at the mo!
He built it as part of a guitar amp for Mum expecting some interesting distortion but was surprised how clean it sounded.
Luv, Ami.
Thanks Ami.
