LSiM705 Crossover Modification Thread

VR3
VR3 Posts: 28,746
edited August 2013 in DIY, Mods & Tweaks
I am taking receipt of these bad boys today, picking them up and am looking forward to digging into them. I already have my plan of action in mind and I hope to walk away with a "bolt in modification"!

Anyone else cracked these open yet?
- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
Post edited by VR3 on
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  • leroyjr1
    leroyjr1 Posts: 8,785
    edited August 2013
    Yeah, cracked mine open.
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  • VR3
    VR3 Posts: 28,746
    edited August 2013
    Pictures?
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • leroyjr1
    leroyjr1 Posts: 8,785
    edited August 2013
    photo-649.jpg

    photo-685.jpg
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  • leroyjr1
    leroyjr1 Posts: 8,785
    edited August 2013
    Love the quality of the drivers. Best I've seen from Polk yet.
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  • treitz3
    treitz3 Posts: 19,145
    edited August 2013
    It seemed to me that Polk Audio was really interested in getting user feedback AND implementing the feedback into the new lineup of speakers. Now I'll be the first to admit, I may be way off base here but I do notice that some [correction, a lot of...] the feedback that was given at Polkfest and subsequent meetings at Polk HQ were actually implemented within this particular speaker lineup. I have yet to hear them and perhaps I will at Trey's [VR3] in the coming days but from all of the feedback since the launch? It looks like Polk Audio did very well with this lineup.

    I'd like to thank those who worked....er, uh, rather volunteered to offer feedback to the Polk designers/engineers/marketing behind the scenes. Whether or not we had anything to do with the final product or not, the end result speaks volumes and hopefully puts Polk back on the map for some excellent sound at a certain price point [which was their ultimate goal].

    Hopefully I can get my ears on the pair Trey picked up before he tears them apart and offer my own observations. *prays*

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
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  • leroyjr1
    leroyjr1 Posts: 8,785
    edited August 2013
    VR3 let me know what you come up with as far as mods and if it made a difference. Since mine aren't selling figure I'd get them modded.
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  • VR3
    VR3 Posts: 28,746
    edited August 2013
    Tom,
    If you are lucky I will just bring them to your house tomorrow and we will drink beer and listen to music hahahah!

    I am going to perhaps modify these so you can swap stock and modified crossovers and bring them to Polkfest! :)

    Will keep this thread posted, I am looking to make this an upper tier modification, cap/resistor/inductor swap, point to point, Delrin substrate, a full bore Monastery! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Ocezam
    Ocezam Posts: 52
    edited August 2013
    VR3 wrote: »
    I am taking receipt of these bad boys today, picking them up and am looking forward to digging into them. I already have my plan of action in mind and I hope to walk away with a "bolt in modification"!

    You have no idea how many times I came within an inch of pulling the trigger on your x-over mod for my LSi15s. I held off because I bought them so cheap ($600) that I kept thinking if I did it, I'd never upgrade to the LSiM.

    With my new LSiM705's on the truck enroute to my home, I'm really looking forward to you getting these done.

    Thread bookmarked!
    "The ear is not a microphone, the brain is not a tape recorder, and measurements are limited in describing subjective quality." Nelson Pass

    2 Channel:
    XDA-2, Modified Jolida JD502P (2 ea), Polk LSiM705
    Theater:
    Onkyo TX-NR3009 with 9 active channels, Emotiva XPA-5, MartinLogan Encore TF Center Channel, Polk M70 Mains, M40 Wides, M30 Heights, FXi A4 Surrounds, Custom built 18" sub, Mitsu 73" DLP
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  • leroyjr1
    leroyjr1 Posts: 8,785
    edited August 2013
    How do u like the sound so far? Ok? Good?
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  • VR3
    VR3 Posts: 28,746
    edited August 2013
    I like them pretty well so far. I figure I will break them in the next week and mess around with the best way to remove those gaskets around the woofers in the correct manner..

    I am not big into reviews anymore but I can tell you they are walking into a room that once held extremely big shoes (Super Towers).
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,746
    edited August 2013
    I will have modified LSi9 here in the house in the next week (customers) and I will do a small shoot out with the LSiM705 versus the LSi9 Fortress modded, that will be fun! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • falconcry72
    falconcry72 Posts: 3,580
    edited August 2013
    VR3 wrote: »
    ...I am looking to make this an upper tier modification, cap/resistor/inductor swap, point to point, Delrin substrate, a full bore Monastery! :)

    Awesome. Looking forward to the results!
    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
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  • falconcry72
    falconcry72 Posts: 3,580
    edited August 2013
    VR3 wrote: »
    ...the best way to remove those gaskets around the woofers in the correct manner...

    Plastic spoon.

    The gasket around the tweeter/mid assembly is tricky because there is adhesive. The gaskets around the woofers come out much easier because there is no adhesive. Don't be scared of hurting the rubber; it's very robust, just be careful not to scratch the wood, hence the plastic spoon.

    You just want to pry them up at one spot and then pull from there.
    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
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  • VR3
    VR3 Posts: 28,746
    edited August 2013
    Thank you for that tip!

    I like the "bag" they come in, I think I will keep them on the speakers when not in use! :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,746
    edited August 2013
    Now this most interesting... the brace that connects to the baffle is broke off inside... hmmmmmm
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • leroyjr1
    leroyjr1 Posts: 8,785
    edited August 2013
    The glue job on the inside suck.
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  • [Deleted User]
    [Deleted User] Posts: 1,394
    edited August 2013
    Trey,
    I will be looking forward to this. It would be nice to bring more life to them.
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  • VR3
    VR3 Posts: 28,746
    edited August 2013
    Yeah they definitely have a "stock" inexpensive parts sound to their overall signature, a lot of compression. To those reading do not take that as a knock, the LSiM705 sounds -FANTASTIC- but it is not perfect.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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