|
General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc. |
|
Thread Tools |
3rd May 2019, 3:49 pm | #81 | |
Heptode
Join Date: Jul 2010
Location: Wellington, New Zealand.
Posts: 653
|
Re: So what's the deal with single ended hifi amps?
Quote:
|
|
3rd May 2019, 3:55 pm | #82 |
Heptode
Join Date: Jul 2010
Location: Wellington, New Zealand.
Posts: 653
|
Re: So what's the deal with single ended hifi amps?
To divert you all and show there is no mortgage on this sort of thing in audio amps there is the story of 'Nashville straights You see ordinary guitar strings come neatly coiled in a little envelope BUT some acoustic engineers back in the 70's decided this downgraded the string. So they came out with strings in a straight package (about 4 foot long) AND cryrogenically treated - for only 3x price of a normal packet of strings. Needless to say they did not last long despite various 'name' guitarists praising their superior sonic qualities!!
|
3rd May 2019, 4:21 pm | #83 |
Nonode
Join Date: Jan 2009
Location: Bristol, UK.
Posts: 2,059
|
Re: So what's the deal with single ended hifi amps?
There are a selection of solid state single-ended designs HERE
These do have the benefit of simplicity and likely knock the spots off the SE tube designs for ~ 1/1000th the price ! dc PS: the 'zen variations' are SE, the others are class A |
3rd May 2019, 5:37 pm | #84 |
Dekatron
Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,942
|
Re: So what's the deal with single ended hifi amps?
I think very highly of Nelson Pass. He has his company making very serious amplifiers with eye-watering prices, and he has his DIY side, and works very hard at that too.
The one that makes me chuckle is the monster transmission line subwoofers he built https://www.passdiy.com/project/spea...d-of-el-pipe-o With the superb line "Funny things happen when your speakers are flat to 13 Hz. You have to be careful about your tone arm, your windows, your neighbors, and your bowels" Craig |
5th May 2019, 3:28 am | #85 | |
Dekatron
Join Date: Dec 2007
Location: Haarlem, Netherlands
Posts: 4,185
|
Re: So what's the deal with single ended hifi amps?
Quote:
Last edited by Maarten; 5th May 2019 at 3:47 am. |
|
5th May 2019, 4:44 am | #86 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,803
|
Re: So what's the deal with single ended hifi amps?
In the early days of transistors, they were expensive and people hadn't yet learned how to design with them, so a lot of sets were designed as if they were valves. It hadn't been realised that other circuits might better exploit them, and those circuits were yet to be discovered.
Even years later, some people were still more comfortable with valve-like characteristics and valve-style circuits. They latched onto the JFET as a comfort zone. Just take a wander through all the Tech Topics columns Pat Hawker wrote and you'll see he was most comfortable with valves first and JFETs second. We have a rich variety of different devices available to us (If you can get real ones and not fakes) and it's a competitive world out there, so let's celebrate the differences, and exploit them to the hilt. David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done |
5th May 2019, 6:29 am | #87 |
No Longer a Member
Join Date: Oct 2016
Location: Maroochydore, Queensland, Australia.
Posts: 2,679
|
Re: So what's the deal with single ended hifi amps?
That is exactly why I abandoned the triode section of the ECH83 for an MPF102 jFet for the local oscillator in my EF98-OC16 radio when I discovered that the triode section of the ECH83 was no chop above 12MHz. Of course if it was just an MW band radio, I would never have known.
|