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How powerful can single ended amps be?

Discussion in 'Amp Central Station' started by Jakedog, Apr 23, 2021.

  1. telemnemonics

    telemnemonics Telefied Ad Free Member

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    What I've read about the idea of bigger SE amps is that while you can go to KT88 or the massive KT90 but the returns diminish, in that before the amp can keep up with a loud drummer it weighs more than a 100w Marshall and costs similarly high(er) per watt.

    The good news is that you can buy a second same Supro amp easily!

    There are some single ended multi power tube amps too, like I forget which Laney I think the lionheart 20, where they are true class A not the fake class A that's only really cathode biased.
    Again, expensive and heavy for the wattage.
     
  2. BB

    BB Poster Extraordinaire

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    How bout putting a SM57 in front of it and running it to the PA?
     
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  3. telemnemonics

    telemnemonics Telefied Ad Free Member

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    If the goal is for the entire audience to be able to hear the guitar, it's possible that more dbs in one location isn't as good as almost the same dbs in two locations.

    Filling a room so all can hear by having one amp putting out twice the spl is a lousy solution, but then that's R&R too!
     
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  4. gusfinley

    gusfinley Tele-Afflicted

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    [Deleted due to misleading information on the Supro website]
     
    Last edited: Apr 23, 2021
  5. gusfinley

    gusfinley Tele-Afflicted

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    [deleted]
     
  6. Telekarster

    Telekarster Tele-Afflicted

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    I'm shocked JD! Shocked I tell ya! Are you feeling ok? LOL!!!:lol::D
     
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  7. VonBonfire

    VonBonfire Tele-Meister

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    A bigger version, even otherwise identical, would put out volume enough to change the perceived tone as your ears compress the sound as volumes rise. Best bet is mic the amp or buy some sort of re-amping equipment.

    Pure heresy. Post reported.

    Kidding of course!
     
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  8. markal

    markal Tele-Afflicted

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    I have Laney Lionheart 5watt, single ended Class A with one EL84. It’s a great amp. So I wonder if you should consider the Laney Lionheart 20w mentioned by @telemnemonics above? I think it’s 2x12 and will weigh a ton (the 5 watt combo is 42 pounds!). Maybe the 20-watt head?

    Also, I think the Mesa Cali Tweed goes parallel single ended in one of its lower wattage modes. Might check that out.

    Edit - never mind...the Mesa switches between pentode and triode. I don’t even know what that means.
     
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  9. Edgar Allan Presley

    Edgar Allan Presley Friend of Leo's

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    What about using the line out to a power amp and cabinet? It will change the character somewhat, but so would the other solutions offered.
     
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  10. 2L man

    2L man Tele-Meister

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    Powerful SE output transformers are very heavy. I have decided to build about 30W SE guitar amp and bought VDV-1324-SEE which is toroid OPT designed for HiFi up to 25W SE so it should easily produce 30W to guitar low notes. It weights reasonable 1750g (3.9lbs). I use KT150 and set impedance to 2,5k ohms. For PT I use TSTA 0120/001 toroid which outputs 330VAC/0,25A and weights 1370g (3.0lbs).
     
  11. Marc Morfei

    Marc Morfei Friend of Leo's Silver Supporter

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    I checked out that Dr Z-plus just now. Looks pretty great. But if you're gonna spend two grand on an amp I suppose all the options would be pretty sweet.
     
    Last edited: Apr 23, 2021
  12. Jakedog

    Jakedog Telefied Ad Free Member

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    It’s not always an option. In the bigger rooms I play it’s a no brainer. Same with festivals and big outdoor events. There’s a house PA and an FOH guy to mix. At the majority of small bar/pub/house party gigs we do the PA is a pair of EON610’s on sticks for vocals only. Amps have to carry the room.
     
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  13. Jakedog

    Jakedog Telefied Ad Free Member

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    Nobody is more surprised than I am. I’ve used a lot of different amps (I still have and use my 120 watt SS DV Mark beast), and they all have their place. But Marshalls have always been my favorite. I’ve always said if I could only own one amp it would probably have to be a Marshall. But now I don’t know. This little amp has just crammed itself into my heart.
     
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  14. 2L man

    2L man Tele-Meister

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    Most powerful SE OPT I know is 90W HiFi rated toroid VDV-HQ-5090-SES (mennovanderveen.nl) so for guitar amp it should produce over 100W but it require very high operative voltage around 1000V because of its high impedance.

    TTG-KT88PSE (toroidy.pl) is 50W HiFi rated toroid OPT which should be good for 60W guitar amp using two KT120. I have not finished mine because I made a mistake designing it fixed bias and it would became unstable and wait inspiration to get finished cathode biased.
     
    Last edited: Apr 24, 2021
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  15. Telekarster

    Telekarster Tele-Afflicted

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    Yep, I hear ya! I read your other post too regarding your situation in clubs etc. I found this old TDPRI thread, thought maybe there's some info in it that might help? Good luck man! Hope you can find a solution!

    https://www.tdpri.com/threads/increasing-tube-amp-power-output.317782/
     
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  16. David Barnett

    David Barnett Doctor of Teleocity

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    There are some big tubes out there.

    I'm drawing a blank on its number at the moment, but there's a big beam tetrode with a bayonet base, looks like a 211 triode but with a plate cap. Almost a foot long. You could probably get 125W out of one single-ended. As long as you're not afraid of power supplies in the KV range...
     
  17. bebopbrain

    bebopbrain TDPRI Member

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    Bigger cab. 15W with a full stack is louder than 100W through a 1x12. Doubling the cab is exactly equivalent to doubling the amp.
     
  18. corliss1

    corliss1 Friend of Leo's Platinum Supporter

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    Nope, that's not how it works.
     
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  19. Cali Dude

    Cali Dude Tele-Afflicted

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    The THD Bivalve is (I think) considered a parallel single ended 30 watt amplifier, and can be run with or without the attenuator. I may be using the wrong terminology. I dig single ended amps too.
     
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  20. clayfeat

    clayfeat Tele-Afflicted

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    Have you tried running the line out into your Marshall? I know that is not exactly what you are after but it might sound cool.
     
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