Amp/Preamp Asylum

Posted by skudra (A) on November 01, 2009 at 17:13:34

I have what I think are Welborne Labs Laurel monoblocks that I got in a package deal. I have (2)Sophia 300B's, (2) Mullard GZ34's, (2)Jan-Chs6SL7GT Sylvanias, (2) Sylvania 6AC7 (3) Hewlitt Packard 6AC7.
I'm not sure where these tubes go as I have no schematic.
Any help would be appreciated. I did try google and didn't come up with anything.

• RE: welborne labs laurel - skudra 05:11:08 11/03/09 (0)
  In Reply to: RE: welborne labs laurel posted by skudra on November 01, 2009 at 17:13:34

  I got the amps fired up yesterday and ran them all day and sat down to listen last night and they really sound great. Not slow and soggy at all, but very detailed without the least bit of harshness.
  The word that came to mind when I was listening was "atmospheric". I could really hear the space of the recording.
  I like it better than the 300B amp I'm using now and it's not even broken in yet.
  What are others impressions?
  

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• "Mullard GZ34's" - are you sure? - Metralla 20:58:21 11/01/09 (2)
  In Reply to: RE: welborne labs laurel posted by skudra on November 01, 2009 at 17:13:34

  Should have Mullard GZ37 rectifiers. That's what came with mine.
  
  Regards,
  Geoff
  
  

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  • RE: "Mullard GZ34's" - are you sure? - skudra 05:06:02 11/02/09 (1)
    In Reply to: RE: "Mullard GZ34's" - are you sure? posted by Metralla on November 01, 2009 at 20:58:21

    It came with Mullard GZ34 rectifiers. I have some Mullard GZ33's that are in my LadyDays that I could use.
    So as I look at the photo below, from left to right, tube #1 would be the 300B, tube #2 would be the 6SL7, tube #3 would be the 6AC7, and the last tube on the right is the rectifier tube, either GZ33, or GZ34?
    Also, is there a way to bias the tubes?
    

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    • auto-bias - Metralla 05:13:20 11/02/09 (0)
      In Reply to: RE: "Mullard GZ34's" - are you sure? posted by skudra on November 02, 2009 at 05:06:02

      No manual bias adjustments. You have the order correct.
      
      Regards,
      Geoff
      
      

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• Will this help? - snert 17:35:39 11/01/09 (0)
  In Reply to: RE: welborne labs laurel posted by skudra on November 01, 2009 at 17:13:34

  

  .

  • Laurel Mods   (Open in New Window)

  
  

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