Valve amp's |
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Dub Specialist Sound
Old Croc Joined: 15 November 2013 Location: Smethwick Status: Offline Points: 4873 |
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Posted: 22 November 2017 at 2:52pm |
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Can anyone give me info on the difference between
push/pull and single ended valves and also what does people prefer/desirable thanks
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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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Try google, there are lots of info about tubeamp topologies.
Basically, SE amps are class A and pushpulls class AB thus having much better efficiency and more power output.
Edited by Tonskulus - 22 November 2017 at 4:38pm |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
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single ended tend to be at the lower wattage part of the scale such as radios and TV sound, push pull are what you get in high power amps such as PA, hifi and guitar.
A push pull will generate more than the sum of the two seperate valves and valve datasheets will often have 2 wattage ratings for the two circuits. |
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Kevin
North Staffordshire |
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valve head777
Old Croc Joined: 27 July 2012 Location: East Sussex Status: Offline Points: 1781 |
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SSingle ended,-bullsh1t hifi.
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Freedom of choice, choice of freedom.
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valve head777
Old Croc Joined: 27 July 2012 Location: East Sussex Status: Offline Points: 1781 |
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Also no output transformer.
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Freedom of choice, choice of freedom.
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Dub Specialist Sound
Old Croc Joined: 15 November 2013 Location: Smethwick Status: Offline Points: 4873 |
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Thanks all
simple repleys but great and simple explation big thanks
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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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Both SE and PP requires impedance matching because tubes are generally high impedance devices (high voltage / low current) while speakers has low impedance -> transformer required. However, there are some special amp circuits called OTL, having many many parallel connected tubes which can feed speakers directly without output transformer. And there has been high impedance (800ohm) speakers designed for tube amps without transformer.
Edited by Tonskulus - 23 November 2017 at 8:28pm |
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valve head777
Old Croc Joined: 27 July 2012 Location: East Sussex Status: Offline Points: 1781 |
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And there has been high impedance (800ohm) speakers designed for tube amps without transformer.
This is what I meant. |
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Freedom of choice, choice of freedom.
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
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back in the 1920's, yes |
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Kevin
North Staffordshire |
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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Actually back in the 1960's, because I have one Philips radio/receiver having Stereo amplifier + 800ohm stereo speakers. Amplifier stage is not single ended nor std pushpull, quite weird circuit. Two tubes (ECL82) / channel. Really nice sounding thing it is anyway! Edited by Tonskulus - 24 November 2017 at 6:11am |
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