1. The Rules have been updated regarding posting as a business on TGP. Thread with details here: Thread Here
    Dismiss Notice

The Amp Bias spreadsheet and more...

Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by Slick51, Nov 2, 2004.

  1. Nov 2, 2004 #1
    Slick51

    Slick51 Colonel Curmudgeon Silver Supporting Member

    Messages:
    506
    Joined:
    Mar 23, 2002
    Location:
    Northwest Corner of NC, 5 mi from MerleFest
    I had lots of requests for my bias calculator spreadsheet (from another thread), so I posted it on my website (URL below). I also uploaded photos of some bias mods for 5150s (I & II) and the Fender Princeton Reverb II. BTW, the PRII bias mod works for the Deluxe Reverb II.

    Use at your own risk. Just trying to help our community.

    Slick51
     
    Slick51, Nov 2, 2004
    Slick51, Nov 2, 2004
    #1
  2. Nov 3, 2004 #2
    sampleinajar

    sampleinajar Member

    Messages:
    1,211
    Joined:
    Sep 19, 2003
    Location:
    NJ
    Thanks! I just downloaded it and checked it out. Very nice indeed, and you spent some time on the layout too. Cool!

    Steve
     
    sampleinajar, Nov 3, 2004
    sampleinajar, Nov 3, 2004
    #2
  3. Nov 3, 2004 #3
    slipperyfingers

    slipperyfingers Member

    Messages:
    925
    Joined:
    Feb 17, 2004
    Location:
    Sykesville, MD USA
    Thanks, good info...and nice layout. By the way, I grew up in Woodbridge, VA, and my mom lives in Lakeridge. I currently live up in MD now.

    Best Regards,
    Bill
     
    slipperyfingers, Nov 3, 2004
    slipperyfingers, Nov 3, 2004
    #3
  4. Nov 3, 2004 #4
    Slick51

    Slick51 Colonel Curmudgeon Silver Supporting Member

    Messages:
    506
    Joined:
    Mar 23, 2002
    Location:
    Northwest Corner of NC, 5 mi from MerleFest
    Thanks for the kind words. I had a version about 90% of this that I've used for a couple of years, so it took little work to put it in this final form. Instead of answering requests via email, I just wanted to put it out there so anyone could use it.

    Good to hear from a local guy, too!

    Later
    Slick51
     
    Slick51, Nov 3, 2004
    Slick51, Nov 3, 2004
    #4
  5. Nov 3, 2004 #5
    Lonely Raven

    Lonely Raven Member

    Messages:
    1,003
    Joined:
    Jun 29, 2004
    Location:
    Bolingbrook, IL
    Good deal. I just downloaded it and took a look.
    It's all done very well and looks quite nice!

    I apprecaite your efforts!
     
    Lonely Raven, Nov 3, 2004
    Lonely Raven, Nov 3, 2004
    #5
  6. Nov 4, 2004 #6
    RussB

    RussB low rent hobbyist Silver Supporting Member

    Messages:
    11,052
    Joined:
    Jul 3, 2004
    Location:
    CT
    Nice work, Thanks!




    ...a couple boo-boo's though. EL34's dissipate 25 watts, and 6L6GC's 30 watts, max.

    JJ 6V6's are 14 watt tubes...
     
    RussB, Nov 4, 2004
    RussB, Nov 4, 2004
    #6
  7. Nov 5, 2004 #7
    Slick51

    Slick51 Colonel Curmudgeon Silver Supporting Member

    Messages:
    506
    Joined:
    Mar 23, 2002
    Location:
    Northwest Corner of NC, 5 mi from MerleFest
    I knew this would happen, so I EXPLICITLY posted in the sheet that these dissipation values were from one source.

    You are certainly welcome to enter any value you choose into this free tool, modify the tool to report a higher bias value (say 80% of max) or to use another tool for that matter.

    This is my version of a gift horse....

    Slick51
     
    Slick51, Nov 5, 2004
    Slick51, Nov 5, 2004
    #7

Share This Page