Results 1 to 7 of 7

Thread: Bassman aa864 master volume mod

  1. #1
    Junior Member
    Join Date
    Nov 2017
    Posts
    15
    Thumbs Up/Down
    Received: 0/0
    Given: 0/0
    Rep Power
    0

    Bassman aa864 master volume mod

    Hi,

    I want to mod my fender aa864 to add a master volume ( post phase inverter ). But I have a question... The cable thick does matters? The cable that I have is a XLR mic cable.

    https://ibb.co/Gd5DnpL

    thanks.

    0 Not allowed! Not allowed!

  2. #2
    Supporting Member
    Join Date
    Mar 2018
    Location
    Germany
    Posts
    2,316
    Thumbs Up/Down
    Received: 1,771/1
    Given: 1,014/2
    Rep Power
    5
    Cable thickness does not matter.

    1 Not allowed! Not allowed!
    - Own Opinions Only -

  3. #3
    Bent Member Chuck H's Avatar
    Join Date
    May 2007
    Location
    pacific north west
    Posts
    15,410
    Thumbs Up/Down
    Received: 2,400/4
    Given: 2,775/0
    Rep Power
    30
    Quote Originally Posted by Helmholtz View Post
    Cable thickness does not matter.
    This^^^^^^^^^^^^^^^^^^^^^^^^^

    But cable routing and shield grounding can. Try to keep the leads as short as practical and don't ground the shield with anything mains, power amp or filament related.

    0 Not allowed! Not allowed!
    "In fact when I run into problems working on electronic circuirts, there are so many times that when I finally track it down, the source of the problem is located between my soldering iron and my seat." SoulFetish

    "Now get off my lawn with your silicooties and boom-chucka speakers and computers masquerading as amplifiers" Justin Thomas

    "Being born on third base and thinking that you must have hit a triple is pure delusion!" Steve A

  4. #4
    Supporting Member
    Join Date
    May 2006
    Location
    Staffordshire UK
    Posts
    3,780
    Thumbs Up/Down
    Received: 529/1
    Given: 476/2
    Rep Power
    18
    I think that using such cable may make the job rather more difficult (and so likely to be unsuccessful, especially so if the operative lacks a good level of skill and experience).

    0 Not allowed! Not allowed!

  5. #5
    Junior Member
    Join Date
    Nov 2017
    Posts
    15
    Thumbs Up/Down
    Received: 0/0
    Given: 0/0
    Rep Power
    0
    I've done...

    yes, it's a bit difficult. But I don't know if I prefer an attenuator or a MV...

    https://ibb.co/wrfD9N3

    https://ibb.co/wBy6NSH

    0 Not allowed! Not allowed!

  6. #6
    Supporting Member
    Join Date
    May 2006
    Location
    Staffordshire UK
    Posts
    3,780
    Thumbs Up/Down
    Received: 529/1
    Given: 476/2
    Rep Power
    18
    Well done, the cable look a bit more manageable than the 6mm dia type I envisaged.
    Be careful with its screen termination, can't quite see what you're connecting it to, but you mustn't let it ever risk shorting the blue bias feed wire to chassis 0V.

    0 Not allowed! Not allowed!

  7. #7
    Junior Member
    Join Date
    Nov 2017
    Posts
    15
    Thumbs Up/Down
    Received: 0/0
    Given: 0/0
    Rep Power
    0
    The blue cable goes to the bias pot, and the shield to the pot ( only one termination ).

    Thanks!!

    0 Not allowed! Not allowed!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Bassman AA864 Question
    By Pryde in forum Maintenance, Troubleshooting & Repair
    Replies: 8
    Last Post: 02-01-2015, 09:52 PM
  2. Bassman AA864 hum trouble
    By sliberty in forum Debugging Your Build
    Replies: 7
    Last Post: 09-27-2014, 05:18 AM
  3. Fender Bassman 70 Master Volume Pot?
    By Rhodesplyr in forum Maintenance, Troubleshooting & Repair
    Replies: 5
    Last Post: 01-08-2012, 08:24 PM
  4. Bassman to mod or not to mod AA864...
    By Nebula9 in forum Mods & Tweaks
    Replies: 1
    Last Post: 04-01-2008, 07:26 PM
  5. Bassman......to mod or not to mod AA864
    By Nebula9 in forum Maintenance, Troubleshooting & Repair
    Replies: 1
    Last Post: 03-26-2008, 06:16 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •