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Thread: RTia9 vs LSI9's

  1. #31

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    Ginn, F1 is a master around here... just yank the crossover out and a take look see for a brownish/blackened little item on the crossover...
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  2. #32

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    Quote Originally Posted by Inspector 24 View Post
    Aaah, leaves the boards intact? Perhaps that could explain it. I almost bought a set of LSi's that didn't have all the tweeters working, after the demo the guy gave me I wasn't surprised, pumping the volume that high with just an AVR…yikes…Also bought a CSi5 with a non-working tweet, also a cooked resistor, easy fix.

    Also curious what the seller was driving them with. And how loud he played them for you? :p
    Just a heads up he was using a 7.1 - 105w per channel receiver. He was playing jazz so I guess I missed them sounding subdued.
    Even at high levels the sound way to muffled. It's not like they're a little bit off, there is defiantly something wrong with them.

  3. #33

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    Sounding more and more like fried resistors and/or tweeters.
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  4. #34

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    Quote Originally Posted by Ginn View Post
    You guy's are friggen hilarious. I thought this playful banter only happened on the Audizine forum.

    Anyway's F1 do you think it's just a resister? How would I know if I pulled out the crossover?

    If it's not a resister, what do you think it would be?

    Thanks
    Gotta liven this place up once in a while.

    Most likely it is the resistor. You will see small white rectangular blocks on the board. If one is cooked it will show signs of too much heat such as brown to black color on and/or around the resistor. It's hard to miss when it's no longer pure white. Of course, you can always post a good pic for us to peer at.

    It could also be the tweeters.......and the resistors. Start with pulling a crossover.

    Edit: I see nbrowser addressed your question already.
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  5. #35

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    Thx guy's,
    I'll try and pull the crossover out soon and post a pic.

    Cheers.

  6. #36

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    So I pulled the crossover out and you were right. The 5w resistor looks burnt all around it. I took a couple pic's but I have no idea how to upload them onto this forum.
    Any suggestions to a resistor to replace it with? Upgraded?
    Cheers…..
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  7. #37

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    sent you PM...I will post photo
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  8. #38

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    Here is Ginn's burnt and cracked resistor
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  9. #39

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    Quote Originally Posted by Ginn View Post
    So I pulled the crossover out and you were right. The 5w resistor looks burnt all around it. I took a couple pic's but I have no idea how to upload them onto this forum.
    Any suggestions to a resistor to replace it with? Upgraded?
    Cheers…..
    That's the one, told ya it would be easy to spot.

    Replace them with Mills 12 watt in whatever the ohm value is. They are available from, http://www.soniccraft.com/
    'Political Correctness'.........defined

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  10. #40

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    Thanks F1.
    So I pulled the other speaker apart and the resister was not even attached on one terminal.
    So all the numbers on the resistor is faded off. I think it says (ph)5w3roj or (ph)5w1roj.
    I don't know which one. The centre channel is the 1roj but I think the lsi9 is a 3roj.

    Any feedback on this one? I don't know what ohm that would make it. The speaker is a 4ohm speaker but I don't know about the resistor.

    Thanks
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  11. #41

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    This is what the other crossover looked like
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  12. #42

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    And again, F1 was right !

    Anyways, go track down a couple of nice Mills in the same values, solder them in, reassemble, be happy !
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  13. #43

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    The resistor value has nothing to do with the nominal impedance of the speaker. Since you are in there, might as well replace all the resistors. It will improve the sound a bit and they are cheap enough.

    Stock values:
    LSi 9 tweeter - 3 ohm/5 watt
    LSi 9 upper driver - 1 ohm/10 watt

    Replace with Mills
    3 ohm/12 watt
    1 ohm/12 watt

    Stock values:
    LSiC tweeter - 1.5 ohm/5 watt
    LSiC left driver - 1 ohm/5 watt

    Replace with Mills
    1.5 ohm/12 watt
    1 ohm/12 watt
    'Political Correctness'.........defined

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  14. #44

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    Quote Originally Posted by F1nut View Post
    They don't burn out crossover boards. There is a 5 watt resistor in the high frequency circuit that in hindsight should have been of higher wattage. It can cook given volume abuse.
    Quote Originally Posted by F1nut View Post
    Yes, all the ones I've seen have just needed the resistor replaced. Something like a Mills 12 watt will do the trick. Of course, if some bozo is cranking his AVR into clipping causing the 5 watt resistor to cook, the higher wattage resistor will allow the tweeter to fry.
    You don't know what resistor to use?
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  15. #45

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    Quote Originally Posted by F1nut View Post
    The resistor value has nothing to do with the nominal impedance of the speaker. Since you are in there, might as well replace all the resistors. It will improve the sound a bit and they are cheap enough.
    Very good point Jess, and second that suggestion.

  16. #46

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    Quote Originally Posted by tonyb View Post
    Very good point Jess, and second that suggestion.
    But, apparently I don't know what resistor to use.
    'Political Correctness'.........defined

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  17. #47

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    Quote Originally Posted by F1nut View Post
    But, apparently I don't know what resistor to use.
    I'm sure VR3 does......hey Trey
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  18. #48

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    Thanks F1

    I'll take your advice and replace all of them.
    I'll try to find those around town today. If not I'll have to order online and have them shipped up.
    Now I'm starting to think since I'm in there, I might as well change the caps.
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  19. #49

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    Quote Originally Posted by txcoastal1 View Post
    I'm sure VR3 does......hey Trey
    Seriously? You must have missed post #43.
    'Political Correctness'.........defined

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  20. #50

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    Quote Originally Posted by F1nut View Post
    Seriously? You must have missed post #43.
    yep.....u da man
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  21. #51

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    So I finally got the resistors shipped and installed.
    They sound 100% better than before. It was the resistors that were blown so I put in the Mills as F1 suggested.

    Question for those with a LSIC. Do you notice a different sound coming out of both drivers? I notice that voices and higher end sound come out of the right driver and tweeter, but mostly lower sounds and no voices come out of the left driver.

    I compared it with my CSia6 and the a6 throws out the same sound out of both drivers.

    Anyone have any experience with this?

    Thanks
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  22. #52

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    Am I gonna hafta come over n listen to these myself... ? lol
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  23. #53

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    Hey Ginn, got your PM, not sire I've noticed this, but I do know some centers have the drivers crossed over differently.

    I seem to recall discovering this on other Polk centers, can't remember which. I'll check tonight after dinner. I also have a CS1000 I can check. :p
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  24. #54

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    Quote Originally Posted by Inspector 24 View Post
    Hey Ginn, got your PM, not sire I've noticed this, but I do know some centers have the drivers crossed over differently.

    I seem to recall discovering this on other Polk centers, can't remember which. I'll check tonight after dinner. I also have a CS1000 I can check. :p
    Thank you sir. Just want to know for sure after installing the new resistors.
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