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

Comments

  • txcoastal1txcoastal1 Posts: 8,446
    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
    jv7zd5y0uxnl.jpg

    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures, Simaudio 780D DAC
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Modwright LS100, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers
  • 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
    k3ehhbuxic5s.jpg
  • dannylightningdannylightning Posts: 226
    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
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  • txcoastal1txcoastal1 Posts: 8,446
    @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 ;)
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures, Simaudio 780D DAC
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Modwright LS100, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers
  • nbrowsernbrowser Posts: 7,012
    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.
    Living room: Samsung UN55KU7000 4K UHD HDR 55 inch TV, Marantz CD6004, Pro-Ject Debut Carbon, Parasound zPhono, Mac Mini, Oppo BDP-93, XBox One S 2Tb, Kenwood DPX792BH car deck for radio purposes, Marantz SR5010 AVR, Parasound HCA-1200II, Front SDA 2 modded with Larrys Rings and RD0-194-1 tweeters, Rear Onkyo SKF-4800 Towers, Center CSiA6, BOOM Tannoy TS2.12 Sub, Audioquest Evergreen interconnects just about everywhere except from AVR to amp, MIT Terminator 4, MIT AVT3 speaker cables with extra terminals covered up Monitor 5 Jr+ in the wings for a center channel.
  • pitdogg2pitdogg2 Posts: 8,098
    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: 8,446
    ^^^^Cool, didn't know they were that inexpensive
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures, Simaudio 780D DAC
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Modwright LS100, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers
  • nbrowsernbrowser Posts: 7,012
    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.
    Living room: Samsung UN55KU7000 4K UHD HDR 55 inch TV, Marantz CD6004, Pro-Ject Debut Carbon, Parasound zPhono, Mac Mini, Oppo BDP-93, XBox One S 2Tb, Kenwood DPX792BH car deck for radio purposes, Marantz SR5010 AVR, Parasound HCA-1200II, Front SDA 2 modded with Larrys Rings and RD0-194-1 tweeters, Rear Onkyo SKF-4800 Towers, Center CSiA6, BOOM Tannoy TS2.12 Sub, Audioquest Evergreen interconnects just about everywhere except from AVR to amp, MIT Terminator 4, MIT AVT3 speaker cables with extra terminals covered up Monitor 5 Jr+ in the wings for a center channel.
  • pitdogg2pitdogg2 Posts: 8,098
    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: 38,287
    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.



    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • 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.
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