Better tweeters for Monitor 50's

lostforwords
lostforwords Posts: 4
edited January 2009 in Speakers
How's it going? So I've purchased 2 Monitor 50's for my theater. I guess I played it a little loud and blew out the tweeters on both. I'm aware that I can replace the tweeters from Polk, but I feel Ill just blow them out again. Anyone know of good replacements?

I was wondering about the possibility of using car audio tweeters? The reason is that I have a pair of Infinity's laying around somewhere and would just need to put on the proper spade connectors etc to make them fit nicely. What about impedance in this situation? I'm guessing the crossover inside the cabinet is assuming a certain impedance from the tweeter. I know car speakers tend to be lower than HT speakers (correct?). Would I have to attach an additional coil or maybe just use more than one tweeter?

I'd just like to put some tweeters in these things that won't blow as easily. The ones that are in there now (blown) say RD0088-1 and RD0092-1 on them.

Thanks
Post edited by lostforwords on
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Comments

  • curved
    curved Posts: 664
    edited January 2009
    I wouldn't replace it with anything but what it came with.......

    Get some proper amplification and you won't blow the tweeter.

    Welcome :)
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  • comfortablycurt
    comfortablycurt Posts: 6,745
    edited January 2009
    curved wrote: »
    I wouldn't replace it with anything but what it came with.......

    Get some proper amplification and you won't blow the tweeter.

    Welcome :)

    ...x2

    Welcome to Club Polk.
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  • lostforwords
    lostforwords Posts: 4
    edited January 2009
    So is it volume thats blowing it? Or is it the frequency range? My amp allows for adjustment of the range of frequencies sent to the speakers. What would be the correct range? I think I tried looking for this in the pdf for the speakers. But I'll look again. Thanks.
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  • dorokusai
    dorokusai Posts: 25,577
    edited January 2009
    It has nothing to do with frequency range....turn it down a notch. What are you using to power them?
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • lostforwords
    lostforwords Posts: 4
    edited January 2009
    Powering them with Onkyo TX-SR606.
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  • comfortablycurt
    comfortablycurt Posts: 6,745
    edited January 2009
    lostforwords wrote: »
    Powering them with Onkyo TX-SR606.

    That could be the problem. I have the same receiver...and it's great. It doesn't do to well when it's cranked though. That receiver's only really putting out about 40 watts per channel, so when you've got it cranked up, your speakers are working way harder to play at the same volume.

    The 606 has a feature that allows you to limit max. volume to whatever you want. I'd use it...so then you can't turn it up to high.

    Other than that, the only fix would be to get an external amp, to give the speakers cleaner power, which isn't an option on the 606, due to the lack of pre-outs.
    The nirvana inducer-
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  • dorokusai
    dorokusai Posts: 25,577
    edited January 2009
    You don't need an external amplifier with a loudspeaker rated in the 90db range. There's nothing wrong with an Onkyo TX-SR606 for any Monitor series loudspeaker.

    I suggest backing off the volume knob a tad or buy a speaker more suited for dance club level sound reproduction.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • leroyjr1
    leroyjr1 Posts: 8,785
    edited January 2009
    Ease off the trigger. If you were running a external amp you could get away with higher volumes because your sending cleaner, high current power to your speakers. That Onkyo's distorting at higher volumes.
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  • maximillian
    maximillian Posts: 2,145
    edited January 2009
    To elaborate some more... you are asking too much of the receiver. The Onkyo can power the monitor 50's just fine, but when you push it to the max the amp can no longer provide a clean signal so it distorts. What happens exactly during distortion is a little unclear. Here is one version of the events...

    http://sound.westhost.com/tweeters.htm

    basically when an amp distorts the tweeters get way more power dumped on them than what they can handle and they blow. So you have two choices...

    1) don't crank the receiver's volume to the maximum level. Back it off, to what I don't know.
    2) Get an external amp. I don't think your receiver has pre-outs so you would have to change the receiver too.
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  • lostforwords
    lostforwords Posts: 4
    edited January 2009
    Thanks for the information. That site had a lot of interesting info on it. I guess I'll go ahead and enable the max volume setting.
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