welcome to Apocalypse Audio, your haven for DIY guitar effects in the end times. so, start prayin to the fuzz gods, savin up those parts, and remember, when the big one goes off- keep your transistors shielded from those pesky electromagnetic pulses!


pot codes

the legendary Joe Gagan found this info on a vintage radio site. I thought it was definitely worth reposting. thanks, Joe!

found this info at an old radio parts site.
this info may apply to pots made between 1930s through 60s, possibly into 70s and 80s. use the following at your own risk:

       Z = audio taper
       S = linear taper
       V = c bias taper (right hand taper)
       T = ant. & c bias taper
       U = left hand ant. & c bias taper
       W = left hand taper
       L = left hand taper
       N = left hand taper (screen grid, regen, phono pickup)
       Y = audio shunt & AVC when taper desired

       Tapers: Z = Audio Taper, S = Linear Taper


       IRC POTS: I have some "B" elements (like "Q")
       than can be used in custom pots - inquire
       They can also be used to make gang controls
       but I have no time or knowledge to make any
       complicated controls

       IRC TAPERS:
       13 = audio
       11 = linear
       14 = reverse taper
       17 = special or tone audio
       18 = special or tone audio
       19 = special or tone audio

       Most of the IRC pots with taps are for
       use in volume and tone audio circuits

       Example: Q13-137 is a audio taper pot
       Example: Q11-137 is a linear taper pot.


       Allen Bradley (Ohmite) tapers:
       U = linear
       J = taper (such as audio)
       A = unknown taper


       CENTRALAB / CRL tapers:
       6 = audio taper
       1 = linear
       2 = right hand taper
       3 = taper both ends
       4 = short taper, left end
       C1 = linear taper
       C2 = audio taper
       C3 = reverse audio taper
       C4 = audio taper - modified log 20% center,left hand
       C5 = reverse audio - modified log 20% center, right hand
       C6 = semi linear taper modified log 40%, volume, ant. shunt, c bias
       C7 = semi linear taper
       C11 to C17 = volume with tone comp.

       #1 = audio taper
       #2 = logrithmic right hand taper
       #3 = left/right taper (ant., Shunt & Bias Circuits)
       #4 = linear taper

1 comment:

  1. Anonymous20.12.14

    Want Guitar Upgrades that give You Incredible pickup tones "to die for."

    We have high performance upgrades for your Stratocaster, Telecaster and other brands that will give you all of the pickup tones that are silently "hiding" in your electric guitar or bass. Now you can get more pickup tones from your stock instruments.

    Recent customer comments:

    * "Can't put this guitar down, definitely different. I like it."
    * "Amazing tones from this switch! Love it!"
    * "After installing this upgrade in my Stratocaster, I stayed up all night playing it."

    Here is what Merle Haggard's guitarist Redd Volkaert says on his website at http://reddvolkaert.net/default.html
    (click his "Hot Links" choice to see his comments about AweSome-Guitars products)

    What You Get

    Our Easy-Install upgrade products Give You Amazing Tones Without Changing Your Pickups. This is like an artist finding several dozen more colors of paint to work with. After upgrading, your six strings will never sound the same.

    Do you want the ultimate guitar with ALL the possible pickup tones you can get? Our upgrades will let you break out of "pickup tone prison" and Free You from those puny few pickup tones your instrument manufacturer gave you.

    Now you can get a Grand Canyon Wide range of pickup tones on your upgraded guitar. You can get:
    Blues, Jazz, Metal, Surf, intense Country Twang, Glass-Shattering pickup tones that will punch out windows at 30 paces...

    as well as give you the Signature Sound of every Guitar God since the 1940s.

    Stop sounding exactly like millions of wannabes. Get incredible pickup tones that NOBODY has ever heard before. Get unique Signature Tones that you own.

    Our career-boosting high-performance Pickup Switch Upgrade™ products and electric guitars will give you the ultimate "Holy Crap" experience!

    Check us out now. Get an edge with the greatest electric guitar and bass upgrades ever to be created in the last 100 years.