AudioRoundTable.com: Thermionic Emissions » Class A, AB1, B, C Operation/Modes

Home » Audio » Thermionic Emissions » Class A, AB1, B, C Operation/Modes (How Class A, AB1, B, C Modes Work and Their Strengths and Weaknesses)

Show: Today's Messages :: Navigator :: Polls
E-mail to friend

Re: Class A, AB1, B, C Operation/Modes [message #96340 is a reply to message #96338]

Tue, 07 February 2023 16:13

positron
Messages: 113
Registered: May 2020

Viscount

I run mine Class AB1, and triode for years. Some day will try UL.

At the volume I listen it is mostly if not all Class A mode as you Go.
At one watt output, the amplifier distortion is ~0,05%, so still quite
low.

I have been running sophisticated listening testing and found my mono
blocks do not alter the sound, when no load. However, my load is a
variable cone type speaker so what do I do?

The trick is to match the amp to speaker with the correct total gauge
speaker wire. I don't worry too much about self inductance.
This is fun,,, ya right. Each system will be different.
It takes a lot of time, so beware.

As it turns out, I am running all copper, 10 strands of 18 gauge, 6 feet
long in parallel for each leg to the speaker, adn the other speaker.
Total gauge is ~9.2 gauge if I remember correctly. Yours will vary.

If I run 9 strands or 11 strands in one leg, the sound is not optimumal
in my design. It sounds either too thin or too dull.

Anyone can start testing in their own system for optimum sound.
I would start with hardware store doorbell wire as a starter.
I used double wire in jacket.

Make sure the wire/cable length to one speaker matches the leg length
in the other speaker. Otherwise you may have to add or subtract
a strand for optimum matching of both speakers. Self inductance will
also be different, but maybe low enough to not matter.

Replacing a strand of regular wire with Jenalabs wire will certainly
alter the sound. Right now, I am using one strand of Jenalabs
18 gauge wire in each leg with nine regular strands of hardware store
wire (99.9% pure).
(Jenalabs wuite is 6N pure, 99.9999% pure, and expensive.)

cheers

pos

Report message to a moderator

[Message index]

		Class A, AB1, B, C Operation/Modes By: positron on Sun, 05 February 2023 20:40
		Re: Class A, AB1, B, C Operation/Modes By: Wayne Parham on Sun, 05 February 2023 20:54
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Mon, 06 February 2023 20:38
		Re: Class A, AB1, B, C Operation/Modes By: positron on Tue, 07 February 2023 16:13
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Tue, 07 February 2023 19:33
		Re: Class A, AB1, B, C Operation/Modes By: positron on Tue, 07 February 2023 20:37
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Thu, 09 February 2023 21:01
		Re: Class A, AB1, B, C Operation/Modes By: positron on Thu, 09 February 2023 21:35
		Re: Class A, AB1, B, C Operation/Modes By: positron on Tue, 28 February 2023 19:04
		Re: Class A, AB1, B, C Operation/Modes By: Wayne Parham on Wed, 01 March 2023 08:28
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Wed, 01 March 2023 19:45
		Re: Class A, AB1, B, C Operation/Modes By: positron on Sun, 05 March 2023 00:33
		Re: Class A, AB1, B, C Operation/Modes By: Wayne Parham on Sun, 05 March 2023 08:05
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Sun, 05 March 2023 08:10
		Re: Class A, AB1, B, C Operation/Modes By: positron on Mon, 06 March 2023 19:01
		Re: Class A, AB1, B, C Operation/Modes By: positron on Sat, 06 May 2023 22:32
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Tue, 09 May 2023 21:30
		Re: Class A, AB1, B, C Operation/Modes By: positron on Thu, 11 May 2023 00:26
		Re: Class A, AB1, B, C Operation/Modes By: positron on Tue, 05 September 2023 23:48
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Fri, 08 September 2023 21:12
		Re: Class A, AB1, B, C Operation/Modes By: BreakneckRedneck on Sun, 24 September 2023 00:42
		Re: Class A, AB1, B, C Operation/Modes By: positron on Thu, 12 October 2023 11:21
		Re: Class A, AB1, B, C Operation/Modes By: positron on Fri, 03 November 2023 12:22
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Fri, 03 November 2023 20:58
		Re: Class A, AB1, B, C Operation/Modes By: positron on Sun, 05 November 2023 01:38
		Re: Class A, AB1, B, C Operation/Modes By: positron on Thu, 07 December 2023 23:12
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Mon, 18 December 2023 20:20
		Re: Class A, AB1, B, C Operation/Modes By: positron on Tue, 16 January 2024 21:32
		Re: Class A, AB1, B, C Operation/Modes By: gofar99 on Wed, 24 January 2024 20:31
		Re: Class A, AB1, B, C Operation/Modes By: positron on Mon, 08 July 2024 20:22

Previous Topic:	New source of hum
Next Topic:	Sonic Difference between New Tung Sol 6550 vs KT120 vs KKT150

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Nov 27 05:09:15 CST 2024