PL36 Sweep Tube

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Cressy Snr
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PL36 Sweep Tube

Post by Cressy Snr » Sun Sep 23, 2018 3:56 pm

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?
Ha - ha said the clown. Has the king lost his crown, is the night being tight on romance?

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Ami
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Re: PL36 Sweep Tube

Post by Ami » 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.

Cressy Snr
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Re: PL36 Sweep Tube

Post by Cressy Snr » Tue Oct 02, 2018 11:35 am

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. :)
Ha - ha said the clown. Has the king lost his crown, is the night being tight on romance?

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