Disassembling a LSiM
falconcry72
Posts: 3,580
How the heck do you open up a LSiM703 to, say, replace a driver?
I just sent an email to Polk CS, but I figured I'd post here in case anyone has any good tips/tricks.
The problem is, I have a mid-driver that's creating distortion. When I switch the speakers, the problem follows the speaker, so I know it's not other equipment. It's almost inaudible from the listening position on complicated music like rock, but on mid-heavy, less complicated stuff, where that driver is more isolated, like on a solo vibraphone, it's unbearable.
Unfortunately I'm not the original owner, so I have no warranty.
Ideas?
I just sent an email to Polk CS, but I figured I'd post here in case anyone has any good tips/tricks.
The problem is, I have a mid-driver that's creating distortion. When I switch the speakers, the problem follows the speaker, so I know it's not other equipment. It's almost inaudible from the listening position on complicated music like rock, but on mid-heavy, less complicated stuff, where that driver is more isolated, like on a solo vibraphone, it's unbearable.
Unfortunately I'm not the original owner, so I have no warranty.
Ideas?
2-Channel: PC > Schiit Eitr > Audio Research DAC-8 > Audio Research LS-26 > Pass Labs X-250.5 > Magnepan 3.7's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's
Post edited by falconcry72 on
Comments
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These are not the Polk demo speakers that you have, right?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 -
These are not the Polk demo speakers that you have, right?
No, the demos are perfect.
I bought a used pair after loving the demos so much. Maybe I could switch out my bad speaker for one of the demos and no one would be the wiser!!:twisted: jk2-Channel: PC > Schiit Eitr > Audio Research DAC-8 > Audio Research LS-26 > Pass Labs X-250.5 > Magnepan 3.7's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's -
Ok, you have to peel back the rubber ring around the driver and pull it off to reveal the screws.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 -
Ok, you have to peel back the rubber ring around the driver and pull it off to reveal the screws.
Does it go back on easily, or is it a "destroy on the process of removal" type thing?2-Channel: PC > Schiit Eitr > Audio Research DAC-8 > Audio Research LS-26 > Pass Labs X-250.5 > Magnepan 3.7's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's -
It goes back on easily.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 -
Does the rubber gasket around the driver peel back to reveal screw heads?"He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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2-Channel: PC > Schiit Eitr > Audio Research DAC-8 > Audio Research LS-26 > Pass Labs X-250.5 > Magnepan 3.7's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's -
I think the top portion is held on by glue. It was easy for me to pull off the mid and bass driver rubber rings but the tweeter and 3 1/2 driver portion seem like it was glued so I didn't remove it.(LSIm 705's)
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falconcry72 wrote: »The problem is, I have a mid-driver that's creating distortion. When I switch the speakers, the problem follows the speaker, so I know it's not other equipment. It's almost inaudible from the listening position on complicated music like rock, but on mid-heavy, less complicated stuff, where that driver is more isolated, like on a solo vibraphone, it's unbearable.
Ouch! That stinks. Hope they get you fixed up quick!"....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963) -
EndersShadow wrote: »Ouch! That stinks. Hope they get you fixed up quick!
Well, there really is no "they" to fix me up, as I bought them used with no warranty. You can't hear the distortion on most material, so i didn't hear the problem when I auditioned them.2-Channel: PC > Schiit Eitr > Audio Research DAC-8 > Audio Research LS-26 > Pass Labs X-250.5 > Magnepan 3.7's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's -
falconcry72 wrote: »Well, there really is no "they" to fix me up, as I bought them used with no warranty. You can't hear the distortion on most material, so i didn't hear the problem when I auditioned them.
I meant "they get you fixed up quick" as more of a "they put you on the path to figure out whats wrong and possibly fix it" kinda thing :biggrin:"....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963) -
EndersShadow wrote: »I meant "they get you fixed up quick" as more of a "they put you on the path to figure out whats wrong and possibly fix it" kinda thing :biggrin:
Gotcha, yea, thanks. Hopefully it's just the driver so I can pop a new one in and done.2-Channel: PC > Schiit Eitr > Audio Research DAC-8 > Audio Research LS-26 > Pass Labs X-250.5 > Magnepan 3.7's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's -
falconcry72 wrote: »Gotcha, yea, thanks. Hopefully it's just the driver so I can pop a new one in and done.
Take photos of the process for the rest of us? -
Take photos of the process for the rest of us?
Will do. I'm going to take my time. No point in scuffin' up these beauties!2-Channel: PC > Schiit Eitr > Audio Research DAC-8 > Audio Research LS-26 > Pass Labs X-250.5 > Magnepan 3.7's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's -
I thought the speakers were covered under warranty for a set time, as long as it was from an authorized dealer? I bought a used set of monitors off craigslist and they replaced the tweeter free, even though I wasn't the original owner, maybe I just got lucky?
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I thought the speakers were covered under warranty for a set time, as long as it was from an authorized dealer? I bought a used set of monitors off craigslist and they replaced the tweeter free, even though I wasn't the original owner, maybe I just got lucky?
You would usually need the receipt or other proof of purchase. Often the warranty does specify the original owner, but the name on receipt does not need to match since it could be a gift. -
Just a quick update. It was the tweeter that was bad, not the mid driver. Got a new one from Polk, popped it in, and I'm all set!
No real point in posting pics, once the rubber trim is removed, taking the actual drivers out is obvious.
The tricky part is removing the rubber trim. On the woofer (and I'd assume also on the passives), it pops right out and snaps securely back in place. Super easy. The trim around the mid/high array, however, has some adhesive holding it in, so it's a little tricky. As usual, having the proper tool makes all the difference, as you really don't want to scratch up the beautiful piano black finish. My tool of choice was the business end of a plastic spoon. I just pried one spot up with the spoon and then worked my way around pulling carefully with my fingers.
Before I started I was concerned that I'd hurt the rubber trim, but that was because I didn't realize how substantial that rubber actually is. It's thick, sturdy, and robust. You'd have to do something really stupid to rip it.
I'm not sure why there's adhesive on the mid/high array trim because it has a plastic backing that helps it snap into place similar to the woofer's trim. Anyway, once you know what you're doing, it's a quick, easy job.
Loving these speakers!:biggrin:2-Channel: PC > Schiit Eitr > Audio Research DAC-8 > Audio Research LS-26 > Pass Labs X-250.5 > Magnepan 3.7's
Living Room: PC > Marantz AV-7703 > Emotiva XPA-5 > Sonus Faber Liuto Towers, Sonus Faber Liuto Center, Sonus Faber Liuto Bookshelves > Dual SVS PC12-Pluses
Office: Phone/Tablet > AudioEngine B1 > McIntosh D100 > Bryston 4B-ST > Polk Audio LSiM-703's -
In my experience with Polk if it is something you could not have caused they have covered me (Out of warranty or not an original owner)- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
