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Re: New Production Tung Sol 6550, Penta KT88s [message #96292 is a reply to message #96284]

Sat, 21 January 2023 18:24

positron
Messages: 113
Registered: May 2020

Viscount

Evidently no one uses them?

My testing has found both tubes to be rather thin, anemic sounding compared to JJs and Winged Cs.

So I demagetized both, using my 100 watt soldering gun magnetic field (gun windings), and both tubes became fuller than the JJs and Winged Cs. Quite a sonic change. The new Pentas just slightly fuller than the new Tung Sols.

When the tubes are manufactured, induction heating of the plate removes gases. Evidently, the switch/field is simply flipped, rather than gradual field removal.

So when one purchases a new output tube, what you purchase and hear is not necessarily what the tube sounds like after being demagnetized.

One could probably use a dryer, a motor, anything that produces an AC magnetic field. Simply rotate each tube around the AC device field, and then gradually distance the tube from close to 3 feet or more from the device, and power off the device.

cheers

pos

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[Message index]

		New Production Tung Sol 6550, Penta KT88s By: positron on Wed, 18 January 2023 23:01
		Re: New Production Tung Sol 6550, Penta KT88s By: positron on Sat, 21 January 2023 18:24
		Re: New Production Tung Sol 6550, Penta KT88s By: Wayne Parham on Sat, 21 January 2023 20:48
		Re: New Production Tung Sol 6550, Penta KT88s By: positron on Sat, 21 January 2023 21:33
		Re: New Production Tung Sol 6550, Penta KT88s By: positron on Sun, 22 January 2023 17:28
		Re: New Production Tung Sol 6550, Penta KT88s By: gofar99 on Mon, 23 January 2023 20:25
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: positron on Mon, 23 January 2023 22:12
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: positron on Tue, 21 February 2023 22:45
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: positron on Mon, 26 February 2024 21:44
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: positron on Fri, 21 June 2024 17:29
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: gofar99 on Fri, 21 June 2024 20:50
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: positron on Fri, 28 June 2024 11:28
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: gofar99 on Fri, 28 June 2024 20:46
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: positron on Tue, 02 July 2024 00:14
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: positron on Thu, 16 March 2023 15:30
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: gofar99 on Thu, 16 March 2023 21:28
		Re: Demagnetizing Tung Sol 6550, Penta KT88s By: positron on Thu, 16 March 2023 22:17
		Re: New Production Tung Sol 6550, Penta KT88s By: Wayne Parham on Tue, 02 July 2024 13:50
		Re: New Production Tung Sol 6550, Penta KT88s By: positron on Tue, 02 July 2024 23:41
		Re: New Production Tung Sol 6550, Penta KT88s By: gofar99 on Wed, 03 July 2024 11:09
		Re: New Production Tung Sol 6550, Penta KT88s By: positron on Sun, 07 July 2024 20:26
		Re: New Production Tung Sol 6550, Penta KT88s By: positron on Wed, 28 August 2024 23:11
		Re: New Production Tung Sol 6550, Penta KT88s By: positron on Sun, 06 October 2024 22:36

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Sonic Difference between New Tung Sol 6550 vs KT120 vs KKT150

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