Jump to content

tube fanatic

Regulars
 View Profile  See their activity

  • Posts

    2978

  • Joined

 Content Type 

Posts posted by tube fanatic

    45 SET.. Do I need a preamp

    in Talkin' Tubes

    Posted

    In my mind the question is what can we do to make poorly mastered recordings sound pleasing?  It reminds me of those with the dreaded 10 db boost at 10 kHz.  Tone controls do allow such recordings to be more listenable.  Years back, if I recall correctly, there was a guy on the forum who remastered his music library to make the recordings sound as he wanted them to.  Is that any different?

     

    Maynard

    45 SET.. Do I need a preamp

    in Talkin' Tubes

    Posted

    I don’t consider shaping of frequency response to be a non-audiophile endeavor.  There is a reason why the high quality, now vintage, amps and preamps had tone controls.  For years I have included an “ear bleed filter” in all my designs to allow the high frequency response to be altered to suit individual taste.  Besides, many consider all tube amps to be nothing more than tone controls with gain.

     

    Maynard

    • Like 2

    45 SET.. Do I need a preamp

    in Talkin' Tubes

    Posted

    The less “stuff” in the signal path the better, especially if the device is powered.  As long as you can drive the amps to the levels you desire all is well.  If a source has variable output, direct connection to the amps would be ideal.

     

    Maynard

    • Like 4

    High Power SET?

    in Talkin' Tubes

    Posted

    15 hours ago, 83 LSIs said:

     

    I was listening to some jazz the other day and was curious, so I got the SPL meter out and did some calculations. My average power was @ 1/20 of a watt.


    Indeed!!!  As many are aware, I have always been an advocate of using flea power amps with Klipsch speakers.  
     

    Push pull triodes are considered the ultimate way to go among many audio folks.  My personal preference has been to parallel tubes (whether SET or SEP).  It is possible to achieve very low distortion levels in single ended operation by proper choice of operating point and circuit design.

     

    Maynard

    • Thanks 1

    Opinions on the warmest sounding 12AX7 tubes

    in Talkin' Tubes

    Posted

    It is not possible to make such a recommendation.  A particular tube will likely sound different in every piece of equipment in which it is used because of differences in operating parameters.  Personally, I don’t believe in tube rolling but, if it’s important to you, you need to buy a number of different types and evaluate them yourself in your piece of equipment.

     

    Maynard

    • Like 8

    Output Transformer Secondary Impedance for Forte 1

    in Talkin' Tubes

    Posted

    As was stated above by DE, speaker impedance is not an issue for SETs.  If you use an opt tap corresponding to the lowest impedance of the speaker, distortion will decrease as the impedance rises.  I believe Edcor’s bandwidth ratings are at 1 watt whereas Hammond’s are at full rated power.  If used well below that, the Hammonds are capable of amazing bandwidth.  See George Anderson’s measurement of the 125CSE:

     

    http://tubelab.com/articles/component-testing/budget-output-transformers/

     

    Maynard

    • Like 3
×
×
  • Create New...