Results 1 to 5 of 5

Thread: L300 Lpad cleaning method

  1. #1
    Senior Member
    Join Date
    Nov 2005
    Location
    alabama
    Posts
    111

    L300 Lpad cleaning method

    Can anyone suggest if there is a good way to deoxit the lpads on a pair of L300's that does not require removing the foil cal and removing the lpad from the baffle. I have tried deoxit from the vent holes in the back of the adjustments but don't feel the deoxit ever made it to the area needing to be cleaned. Thanks for all suggestions

  2. #2
    Senior Member edgewound's Avatar
    Join Date
    Jun 2005
    Location
    Southern California
    Posts
    2,704
    Quote Originally Posted by vmax700 View Post
    Can anyone suggest if there is a good way to deoxit the lpads on a pair of L300's that does not require removing the foil cal and removing the lpad from the baffle. I have tried deoxit from the vent holes in the back of the adjustments but don't feel the deoxit ever made it to the area needing to be cleaned. Thanks for all suggestions
    You've pretty much covered all the bases without removing them.

    You can get a 24" extension tube for the spray can and soak the L-pad good through the vents. Make sure you rotate the pots thoroughly until the crackling stops.

    If the crackling continues, you'll have no choice but to replace them.
    Edgewound...JBL Pro Authorized...since 1988
    Upland Loudspeaker Service, Upland, CA

  3. #3
    tesla
    Guest

    If I get your question

    You might get the safest results by removing all drivers from the cab, (If you cannot remove the pots) and then, as you say, soak the offending pots. Make sure that gravity pulls the cleaner down into the pot, and then, most importantly, rotate the pot from stop to stop for a while, at least a couple of mins per spray. However, be aware that in many cases, once a pot is noisy, there is no permanent cure as mentioned before. If you replace the pot(s) be aware that unless you get exact replacements, that you will need to specify "audio taper" not "linear taper"




    Quote Originally Posted by vmax700 View Post
    Can anyone suggest if there is a good way to deoxit the lpads on a pair of L300's that does not require removing the foil cal and removing the lpad from the baffle. I have tried deoxit from the vent holes in the back of the adjustments but don't feel the deoxit ever made it to the area needing to be cleaned. Thanks for all suggestions

  4. #4
    Senior Member
    Join Date
    Jan 2005
    Location
    Detroit
    Posts
    381
    You have to take it apart whether Deoxit or R&R. Many posts in the data base - about 4,623 as I recall. But, you have to use a brush, not spray if you want a first rate job - need to remove the rear cap, etc - read directions on Deoxit bottle. Worth the effort - easy does it with the hair dryer, a gradual process. It's no sin to take them to a pro shop, those are nice speakers.

  5. #5
    Senior Member Altec Best's Avatar
    Join Date
    May 2008
    Location
    Central New Jersey
    Posts
    378
    IMHO deoxit is only a temporary fix,it will become noisy again with time depending on level of dirt in the L-pad.Switches,L-pads,etc.are best replaced once they become too dirty as it will be impossible to clean them thoroughly without taking them apart.
    "James B. Lansing" = Lansing Manufacturing ~ Altec Lansing ~ JBL

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Revolutionary method for dealing with old surrounds
    By rdgrimes in forum Lansing Product Technical Help
    Replies: 7
    Last Post: 09-20-2011, 02:45 PM
  2. Altec Lansing Replacement Diaphragm Assembly Kit B Method
    By Zekeman in forum Lansing Product DIY Forum
    Replies: 1
    Last Post: 03-05-2009, 05:57 AM
  3. Lpad Quality ? ( L-Pad )
    By Earl K in forum General Audio Discussion
    Replies: 18
    Last Post: 01-18-2006, 01:53 AM
  4. A novel cross-over design method (by Oddesit)
    By AlexanderS in forum Lansing Product DIY Forum
    Replies: 8
    Last Post: 11-11-2005, 03:47 PM
  5. Box fb and voltage divider method
    By Dave G in forum Lansing Product Technical Help
    Replies: 15
    Last Post: 04-30-2005, 03:42 PM

Posting Permissions

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