RT12 Crossover board failure?

bantui
bantui Posts: 3
edited December 2011 in Troubleshooting
Please help. I'm a newbie and got a pair of RT12. One of them the woofers (2) will not sound just the tweeter. When swapping woofers to other they're working fine. What's wrong with my speakers? Is that the crossover circuit or components? How to fix it or if needed to buy replacement, what board/ brand /spec of the board should I buy to repair it? Thank you for help in advance.
Post edited by bantui on
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Comments

  • gimpod
    gimpod Posts: 1,793
    edited December 2011
    I'm not familiar with the RT12's but from what I can find is that they have 4 binding posts. Look at the posts on the working one and see if there is a jumper connecting the red post's together and a jumper connecting the black posts together if this is the case look on the one that's not working and see if the jumpers are there if not this is most likely your problem put some jumpers in there. If nether speaker has the jumpers than pull the crossover and check the wire connections at the board. If you could post some pics of the binding posts and the suspect crossover that might help in seeing what's up.
    “The two most important days in your life are the day you are born and the day you find out why.” ~ Mark Twain
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  • bantui
    bantui Posts: 3
    edited December 2011
    Both speakers have 4 wiring posts (connections) marked with 2 (+) and 2 (-) on each back. There are jumper tabs connect both 2(+) posts and two (-) posts together (LF & HF). I guess this was designed for bi-amp or just use with one amplifier. I will try to swap speakers from left to right and v.s to eliminate problem causing by amplifier or digital processor (Technics). After that I probably try to swap out the connection board to see if it can help poiting out the problem part.. Thank you for help, I will try and post the result of my troubleshooting. :-) Have a good night.
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  • bantui
    bantui Posts: 3
    edited December 2011
    Thank for help. Here is the update. Problem solved! After remove the circuit board from both speakers to troubleshooting, I found that the connection between the on off port (that receive signal from speaker wire) to the circuit board (crossover board) was cracked. Not sure that caused the problem but I re-soldered and put them back and it works perfectly! As the newbie user, I don't really know that fix the problem or re-connecting wires fixing problem but it worked.
    Thanks for forums and help of it's member. Have Happy Holiday everyone!
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  • gimpod
    gimpod Posts: 1,793
    edited December 2011
    Glad you got your problem solved, I would bet the board was most likely cracked in shipping or rough handling before you got them. Anyway it's always nice when it turns out to be something simple like a lose wire or bad connection.
    “The two most important days in your life are the day you are born and the day you find out why.” ~ Mark Twain
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