Tube amps not having power tube distortion? - Blackstar HT5R

Discussion in 'The Squawk Box' started by CosmicEnergy, Feb 18, 2014.

  1. CosmicEnergy

    CosmicEnergy Senior Member

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    HI, i'm sorry if this has been asked before but i don't seem to find the answer. I have a blackstar ht 5 and the other day i had the chance to crank the OD channel volume but it doesn't breaks up, it doesn't distort with the volume up like a tube amp should, i leave the gain knob at 1 and 2 or 3 and it still doesn't get power tube distortion, it's just preamp gain. So how cain i get power tube distortion with this amp? i'm kinda dissapointed with my amp :(
     
  2. babatube

    babatube Senior Member

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    try to crank the clean channel to 10, that should bring you power amp distortion.
     
  3. CosmicEnergy

    CosmicEnergy Senior Member

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    I already did but it's not enough, the distortion there is too soft, but thanks anyway :)
     
  4. Marshall & Moonshine

    Marshall & Moonshine Senior Member

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    Crank the volume, then bring up the preamp until the amp starts to distort. It might get loud, but that'll be it.
    I find that with my 800 (a vastly different amp, but a MV amp...), I like a mix of preamp and power amp distortion.
    Everything around noon, is what I really like.
    Just keep twisting knobs until you find it. If you can't get it to break up with everything dimed, it might need to be checked out.
     
  5. slagg

    slagg Senior Member

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    Not gonna happen.The "Power section" uses a 12bh7 Preamp tube as it's power tube.In the 12--- world it is a very clean strile tube mostly used as a reverb driver.All the B.S. on the blackstar HT5 is diode clipping.Don't care what anyone tells you,that's what it is.
     
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  6. babatube

    babatube Senior Member

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    that's true the blackstar HT series are hybrid amps.
    their dirt come from opamps and diode clipping.
     
  7. Marshall & Moonshine

    Marshall & Moonshine Senior Member

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    Hmmm. Surprised I haven't heard that by now. (Surprised, not shocked....)
    I just thought they were EL84 MV amps.
    So that's why people dig them as bedroom amps. :hmm:
     
  8. CosmicEnergy

    CosmicEnergy Senior Member

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    It didn't work neither, it just got louder, but thanks for your help :)
     
  9. sonar

    sonar Senior Member

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    Because people like how they sound.

    It's a low powered amp designed for low volume gain, not power tube overdrive.

    If you want a small single-ended amp that you can crank, look into the Champ circuit (or one of its many derivatives) AC-4, Class 5, Blackheart, boutique whatever...
     
  10. sonar

    sonar Senior Member

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    Can you prove this?
     
  11. CosmicEnergy

    CosmicEnergy Senior Member

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    Damn, i didn't know that, but if i change that tube for an EL34 it will do the same thing, right? damn, manufacters shouldn't lie about specs! this is like the third time that something like that happens to me :mad:
     
  12. CosmicEnergy

    CosmicEnergy Senior Member

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    Crap! they should say it's a hybrid amp intead of lying
     
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  13. sonar

    sonar Senior Member

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    You trolling?
     
  14. Barabus

    Barabus Senior Member

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    Gain all the way up, volume all the way down, then just slowly up the volume you'll get all the distortion you want, careful though as it's bloody loud!
     
  15. CosmicEnergy

    CosmicEnergy Senior Member

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    No, blackstar says it's an "all tube" amp, but is a hybrid but it costs more than a hybrid
     
  16. CosmicEnergy

    CosmicEnergy Senior Member

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    Thanks, i'll try that later! but, isn't that trick used to have lots of sustain at low volume?
     
  17. Marshall & Moonshine

    Marshall & Moonshine Senior Member

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    Way ahead of ya.....
    ;)
    (5f2a-ish homebuild :)
     
  18. sonar

    sonar Senior Member

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    Do you have any real evidence to back up your comment?
     
  19. stealthelephant

    stealthelephant Senior Member

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    Careful now, u will be showed a pic of the circuit as evidence. But u won't understand it and in reality it could be a toaster circuit.... At least that's what happened me ;)

    Blackstar say its tube distortion and the OPamps don't distort. So does my buddy.
    Peeps here say it isn't. In the end u gota decide if its that important for u to care enough about
     
  20. slagg

    slagg Senior Member

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    open it,see for yourself.Opamp drives the signal,diodes clip the waveform creating distortion from da tube.It is technicly tube distortion,but it gets there a lot different then a true tube driving a tube curcuit.Take two diodes together reverse polarized.solder both ends together.solder one end in the signal path after a coupling cap and the other end to ground,WOW distortion!
    Never said they suck,just tain't my thang.
     

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