Are Monitor 50's not up to it?

twinsen
twinsen Posts: 2
edited January 2009 in Troubleshooting
I have had my Monitor 50's for just under a year. I don't play music loud at all, in fact compared to how my mates abuse their Polks, I am using them like headphones!

Now one of the tweeters has gone soft on me, not open circuit, just soft, so I suspect some of the coils have shorted inside (0.6ohm vs 3.6ohm)

For the price the local agent wants for a replacement (since they of course claim I cooked them due to playing them at ear bleed levels) I seriously wonder if its worth it.

Have I got a dud or do these tweets have known issues? I'm not replacing it only to find out I loose another one.
Post edited by twinsen on

Comments

  • danger boy
    danger boy Posts: 15,722
    edited October 2008
    one thing to look at is what are you powering your speakers with? is it an amp or receiver? but yeah.. that is odd if you weren't playing them that loud. Is it possible that someone else played them really loud without your knowledge? :confused:
    PolkFest 2012, who's going>?
    Vancouver, Canada Sept 30th, 2012 - Madonna concert :cheesygrin:
  • ShinAce
    ShinAce Posts: 1,194
    edited October 2008
    Are you sure it's the tweeter and not the crossover?
  • tcrossma
    tcrossma Posts: 1,301
    edited October 2008
    I had a tweeter that needed replacement on my Monitor 60's and the replacement I bought from Polk was quite inexpensive. I'd talk to Polk directly if I were you and see what they can do for you.
    Speakers: Polk LSi15
    Pre: Adcom GFP-750 with HT Bypass
    Amp: Pass Labs X-150
    CD/DVD Player: Classe CDP-10
    Interconnects: MIT Shortgun S3 Pro XLR
    Speaker cables: MIT MH-750 bi-wire
    TT:Micro Seiki DD-35
    Cartridge:Denon DL-160
    Phono Pre:PS Audio GCPH
  • twinsen
    twinsen Posts: 2
    edited October 2008
    Wow - thanks for the quick responses.

    I drive them with a receiver - Yamaha RX-V559
    Without my knowledge - possible, but the maid never touches my things, but that is a possibility.
    Its definitely the tweeter - I checked by swopping the two.

    tcrossma - that was going to be my next port of call. I have a few friends coming over to the States in the next few weeks for holidays and business. Maybe I should just try get them to bring me over a replacement. Even with the exchange rate as bad as it is, I cannot believe it will be as high as I was quoted here, because at that price I could rather put it towards something else.
  • Kex
    Kex Posts: 5,194
    edited October 2008
    Receivers such as yours are the most common cause of tweeter failure: if the sound gets turned up close to maximum on the dial, too little reliable power (not too much, which is a common misconception) causes distortion which causes excessive stress on the tweeter followed by failure of the component. Most receivers certainly play loud enough for the vast majority under normal conditions, but trying to push a speaker too loud (at parties for instance) with a receiver, which cannot handle the demand placed on it, would lead to problems.

    A replacement from Polk, shipped within the U.S., should not be prohibitive though. Certainly cheaper than new speakers.
    Alea jacta est!
  • zombiemusic
    zombiemusic Posts: 65
    edited January 2009
    I just replace my tweeter on the Monitor 50's. A vintage pre amp malfunction was to blame. I only cost $34. Call Polk and make sure to tell them that you are forum member you will get a discount. At least I did.
    My Gear

    Phase Linear 4000 preamp
    Cambridge Audio Azur 640c v.2 CD player
    Dual 1219 Turntable
    Two Harman Kardon Citation 16 amps
    Monitor 50 speakers Bi-amped...
    (dieing to upgrade to rti A9)
    KLH Tremor Series sub (10 inch 125 watts)
  • Cardinals-1
    Cardinals-1 Posts: 80
    edited January 2009
    I agree with the dirty power comment. When i had a cheap receiver I could blow a tweeter without trying. I went to separates and never again.