lsi9 wrong tweeter and burnt crossover
jghglofer
Posts: 100
Need some advice. I just bought a pair of lsi9's off the net and after listing to them for about a week I notice they sounded different from each other. check for blown speakers I discovered the tweeters didn't match. I called polk service to order the correct tweeter and the tech told me to check the crossover. and yes it is burnt. so what i am asking is this a easy repair and or should I do the mods that I have read about on the forum.
please help
please help
Comments
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That looks like the correct tweeter or are you saying the sound doesn't match?
As for the crossover, you need to replace the resistor and do it to both speakers. The values are marked on the resistor, but you will want to increase the wattage rating from the stock 5 watts to either 10 or 12 watts. Mills make an excellent resistor available in the proper values. You can buy them at www.soniccraft.com.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."
President of Club Polk -
Looks like you lost a resistor (white block) and possibly need to replace the adjacent capacitor (black barrel) because it was likely over heated. Also follow the board traces to see if any are broken and need to be jumped. Neither are to difficult to do if you are patient and have a solder sucker, a good iron, and a meter.
If these types of repair knowledge and/or tools that you don't just have a local repair shop handle the fix....shouldn't cost much.
I would recommend upgrading those components to a better quality and duplicate both speakers while you have them broke down.2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
Gear on standby: Melody 101 tube pre, 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, Modwright LS100 (voltz), Simaudio 780D DAC
erat interfectorem cesar et **** dictatorem dicere a -
F1nut, polk said it was the wrong tweeter. I sent them the same pic. polk said the part # is rd0517-2
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That is Polk's part number, however it is a Vifa tweeter they use, so it could be the same one. Best to play it safe though and get one from Polk.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."
President of Club Polk -
txcoastal1 thanks can you give more info on the upgrade
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ordered one today
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Listen to F1 and match the values and buy them from sonic craft2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
Gear on standby: Melody 101 tube pre, 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, Modwright LS100 (voltz), Simaudio 780D DAC
erat interfectorem cesar et **** dictatorem dicere a -
should I replace the 10w one also?
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F1nut is this the resistor I need MRA-12? thanks for your help
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Yes, the cracked small white resistor is the 5 watt one.
Replacing the 10 watt is a good idea as the Mills will sound better.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."
President of Club Polk -
again thanks for your help should they both be replaced with 12w?
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again thanks for your help should they both be replaced with 12w?
!0 will be fine.
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."
President of Club Polk -
thanks veryone for your help.
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Any idea what caused them to go bad?
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Polkie2009 wrote: »Any idea what caused them to go bad?
yep it called listen "these things ROCK" and then the dial goes to 11.... -
The tech I talked to said having the wrong speaker hooked up can do that. he is the one that told me to look for the burn marks. The good thing is I contacted the guy I bought them off of and he is going to pay for the repairs. and for the OEM tweeter.
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It's a 4 ohm tweeter, the same as the Polk version, which is an off the shelf Vifa tweeter. The chances are it's the exact same tweeter. That said, the "replacement" tweeter did not cause the resistor to cook. That was caused by someone cranking the volume level into the clipping range. In addition, the original 5 watt resistor should have been a 10 watt. It's a well documented issue with the LSi speakers.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."
President of Club Polk -
F1nut thanks, I was just going by what the tech told me. and really I dont know enough about the inside of the speaker. its what comes out of the speaker. and it was the difference from the left and right that made me look inside and the 2 tweeters are completely different. one had twice the magnet as the other. the tweeter was still working. can it still work if the resistor is burnt?
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That's a bucking magnet on the Vifa labeled tweeter.the tweeter was still working. can it still work if the resistor is burnt?
It shouldn't be, but you never know.
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."
President of Club Polk
