Comments on Profile Post by atomicbob

  1. Cellist88
    Cellist88
    liquid crimson since @Luckbad can't stop singing praises :)
    Dec 2, 2017
    atomicbob likes this.
  2. atomicbob
    atomicbob
    Bottlehead Crack (no speedball) rebiased for Tungsram e80cc and Philips Jan 6080WC with film bypass caps on electrolytic output caps. Fed from an RME ADI-2 Pro in NOS filter mode. mod'ed HD800 from @Mikoss. Having a great listen to some of my favorite jazz.
    Dec 2, 2017
  3. Melvillian
    Melvillian
    @atomicbob have you tried the Amperex e80cc/6085? It’s a bit warmer and fuller sounding compared to the tungsram. Since you don’t have the speedball upgrade the tungsram is probably better tough.

    I love my BH Crack. Such a pleasant listening experience
    Dec 2, 2017
    atomicbob likes this.
  4. atomicbob
    atomicbob
    Haven't tried the Amperex e80cc. Did you mean 6080 or 6085? I don't know of a 6085 tube. I have considered building a second BH Crack and install the speedball (which I already have.) Just became enamored with the sound of the non-speedball version for the types of jazz to which I listen. Maybe I'm an auditory heathen but I like it.
    Dec 2, 2017
  5. Melvillian
    Melvillian
    Dec 2, 2017
    atomicbob likes this.
  6. atomicbob
    atomicbob
    Ok, I see what you are talking about with the 6085. But Ouch! do they ever ask a prince's ransom for those. My Tungsram e80cc were only $30 US. Yes there is something very intoxicating about a simple OTL implementation.
    Dec 2, 2017
    Melvillian likes this.
  7. Melvillian
    Melvillian
    I had no idea they were that expensive. I paid around $40 for mine.
    Dec 2, 2017
  8. FlySweep
    FlySweep
    Big BIG fan of the SB'ed Crack w/ the Tungsram E80CC. I wish I heard one that was specifically biased for that tube.. cause even non-optimized for it, it was terrific. Amperex 5085 is indeed dope.. might still have it in my tube stash.. will send it to you @atomicbob if I find it. Tungsram's 12AU7 is a fav in the Crack for me, as well.
    Dec 2, 2017
    atomicbob likes this.
  9. Melvillian
    Melvillian
    Dec 3, 2017
    FlySweep likes this.
  10. atomicbob
    atomicbob
    @FlySweep - I replaced the bias resistors with a 10 turn precision resistors. Must be careful about initial setting but with a DMM it is easy to rebias appropriately. Can get exact voltages desired this way. Probably better to have a small series resistor with the precision resistor to set an absolute minimum resistance and thus maximum current to avoid letting out the magic smoke.
    Dec 4, 2017
    FlySweep likes this.