RTI A7 Tweeter Not working

sefesefe Posts: 12
Hi guys
I recently buy a new tweeter for 1 of my RTI A7, Unfortunately is not working and I know the tweeter is good because I try it in the other speaker.

Anyone knows whats is wrong with my speaker? maybe the crossover?

were can I get it fix? Does Polk sells a new one?

thanks a lot


  • txcoastal1txcoastal1 Posts: 7,429
    edited June 11
    Yes you should be able to purchase a new xover, call support 1 (800) 377-7655

    Here is a pic of a RTiA9 which is similar as the A7 with a couple extra drivers

    You could pull the xover as pictured and probably find the culprit, more than likely and burnt/cracked resistor

  • sefesefe Posts: 12
    thanks a lot
  • sefesefe Posts: 12
    Followed your instructions and found that the R1 was burnt/cracked. The reference is 5W2R4J, Were can I find this resistor? I really don't understand all specifications to find the replacement, I really appreciate your help.

    Thanks in advance
  • dannylightningdannylightning Posts: 87
    edited June 13
    yeah.. its got to be a bad crossover.. i had a set of speakers a long time ago that did the same thing.. i pull the tweeter out and hooked it directly toe the speaker wires coming out of my amp and it worked. i pull the crossover out and it was burnt up..

    you can probably get a brand new unit.. not just he part that went bad, call polk customer service and tell them you need a new crossover
  • txcoastal1txcoastal1 Posts: 7,429
    @F1nut or @VR3
    They both have rebuilt and modded the RTiA crossovers and should have the resistor values

    They will recommend a better quality resistor and should be changed in both speakers

    If this is above your pay grade..."Not an insult" then order a new crossover

    You probably were having to much fun, but we understand ;)
  • nbrowsernbrowser Posts: 6,270
    Polk will sell you a new crossover for a rather economical price. I paid $40 Canadian for one not too long ago, should be under that US for one. Installation will require removal of all drivers and batting though and snaking the wiring inside the cabinet is rather easy. It's really not too difficult a job to be honest. I did both my towers in less than a couple of hours but I was also replacing batting that was rodent eaten.
  • pitdogg2pitdogg2 Posts: 6,575
    it would be easy enough to change out with a 10 watt or 12 watt mundorf or mills resistor. I think that is a 2.4 ohm but not 100%
  • txcoastal1txcoastal1 Posts: 7,429
    ^^^^Cool, didn't know they were that inexpensive
  • nbrowsernbrowser Posts: 6,270
    txcoastal1 wrote: »
    ^^^^Cool, didn't know they were that inexpensive

    Yep, and comes complete, terminal cups, straps from upper to lower posts, the crossovers and already wired up for installation and hook up to the drivers. Basically from binding post to driver solution. Really nicely done replacements.
  • pitdogg2pitdogg2 Posts: 6,575
    Even though you get a new XO you will cook the next one if you do not refrain from high levels of sound. That resistor had been VERY hot from excessive clipping IMHO
  • sefesefe Posts: 12
    Thanks a lot guys
  • F1nutF1nut Posts: 37,319
    It's a 2.4 ohm, 5 watt resistor. If you replace it with one of higher wattage the next time you do what you did to cook this resistor the result will be a cooked tweeter.

    Regardless of what you do to remedy the issue you need to figure out what you did to cause it in the first place. Likely cause, volume level too high, AVR sent a clipped signal, poof goes the resistor.

  • The new RTiA7 crossover will cost 48.00, no shipping cost, Club Polk price.

    If your A7 is still under the 5 year warranty we can ship you a new tweeter at no cost.
Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!