Results 1 to 3 of 3

Thread: JBL L100A Century Speaker Polarity Question

  1. #1
    Junior Member
    Join Date
    Jan 2022
    Location
    California
    Posts
    4

    JBL L100A Century Speaker Polarity Question

    Hello,

    I am putting together a project set of JBL L100A speakers. The cabinets came with all drivers and woofers disconnected. I'm assuming that I'd connect the green or white wires to the positive or red colored poles for each and the reverse (black wire to negative or black colored pole). I have though heard that this might not be correct. For instance, I've heard the black pole on the mid range driver is the positive so I'm assuming I should attach the green/white wire to this pole. Can anyone offer some simple advice? For each driver/woofer, which wire goes to which pole/terminal? I weirdly can't seem to find a simple answer online and there seems to be lots of talk about reverse polarity on the various l100 models.

    Thanks, Dan

  2. #2
    Senior Member DavidF's Avatar
    Join Date
    Apr 2003
    Location
    Sonoma County CA
    Posts
    947
    Quote Originally Posted by L100wicks View Post
    Hello,

    I am putting together a project set of JBL L100A speakers. The cabinets came with all drivers and woofers disconnected. I'm assuming that I'd connect the green or white wires to the positive or red colored poles for each and the reverse (black wire to negative or black colored pole). I have though heard that this might not be correct. For instance, I've heard the black pole on the mid range driver is the positive so I'm assuming I should attach the green/white wire to this pole. Can anyone offer some simple advice? For each driver/woofer, which wire goes to which pole/terminal? I weirdly can't seem to find a simple answer online and there seems to be lots of talk about reverse polarity on the various l100 models.

    Thanks, Dan
    When hooking up the factory crossover wiring follow the usual connection protocol with the solid-colored wire (green, white, yellow, red as appropriate) to the red terminal of each driver. The black wire (or sometimes green and black stripe, white and black stripe, etc) attaches to the black driver terminal. It's usually when you start going into DIY modifications that the wiring issue gets tricky.
    David F
    San Jose

  3. #3
    Senior Member edgewound's Avatar
    Join Date
    Jun 2005
    Location
    Southern California
    Posts
    2,786
    Quote Originally Posted by DavidF View Post
    When hooking up the factory crossover wiring follow the usual connection protocol with the solid-colored wire (green, white, yellow, red as appropriate) to the red terminal of each driver. The black wire (or sometimes green and black stripe, white and black stripe, etc) attaches to the black driver terminal. It's usually when you start going into DIY modifications that the wiring issue gets tricky.
    I will reiterate this answer.

    When the factory crossover is present...and correct...the black wire/black striped wire will connect to the black driver terminal.
    Edgewound...JBL Pro Authorized...since 1988
    Upland Loudspeaker Service, Upland, CA

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. JBL L100a polarity
    By tivorocks in forum Lansing Product Technical Help
    Replies: 1
    Last Post: 12-20-2020, 11:20 AM
  2. L100 Century, L100A, L100A Late-front panels?
    By patfont in forum Lansing Product Technical Help
    Replies: 4
    Last Post: 06-27-2008, 07:31 AM
  3. JBL Century L100a woofers
    By Inspector34 in forum Lansing Product General Information
    Replies: 4
    Last Post: 03-04-2006, 02:22 PM
  4. L100A Hookup polarity issues again
    By lgvenable in forum Lansing Product Technical Help
    Replies: 11
    Last Post: 08-12-2005, 08:01 PM

Tags for this Thread

Posting Permissions

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