Polk L200

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VR3
VR3 Posts: 29,702
edited August 2021 in DIY, Mods & Tweaks
Walnut veneer is very classy, love the matte black baffle. I do think a round tweeter faceplate like the reserve would look better.

The midrange circuit has two iron core inductors in series to the mid driver. Ceramic resistors. Just changing these items would have a positive impact on the sound for sure.

A good portion of the parts makes up some series notch filters, I would say unless you were going all out, just updating the resistors and the electrolytic cap being used is OK in a target mod.

Definitely one of Polks more complex crossovers

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- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • rooftop59
    rooftop59 Posts: 8,120
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    But how do they sound man?!?
    Living Room 2.2: Usher BE-718 "tiny dancers"; Dual DIY Dayton audio RSS210HF-4 Subs with Dayton SPA-250 amps; Arcam SA30; Musical Fidelity A308; Sony UBP-x1000es
    Game Room 5.1.4:     Denon AVR-X4200w; Sony UBP-x700; Definitive Technology Power Monitor 900 mains, CLR-3000 center, StudioMonitor 350 surrounds, ProMonitor 800 atmos x4; Sub - Monoprice Monolith 15in THX Ultra
    Bedroom 2.1     Harmon Kardon HK3490; Bluesounds Node N130; Polk RT25i; ACI Titan Subwoofer
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  • VR3
    VR3 Posts: 29,702
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    Fairly neutral with alot of bass. Was surprised by the lack of staging outside of the speakers but they are new so that should improve a bit as they break in 😁
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • CottageChz
    CottageChz Posts: 424
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    Are you gonna mod them after you have a chance to listen to the stock version for a while?
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  • VR3
    VR3 Posts: 29,702
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    These are not mine but I do believe we will mod them!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • smglbrth
    smglbrth Posts: 1,502
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    Did you just pry the ring off to get the driver out?
    Remember, when you're running from something, you're running to something...-me
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  • VR3
    VR3 Posts: 29,702
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    The ring attaches like a grill with pegs
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • CottageChz
    CottageChz Posts: 424
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    VR3 wrote: »
    These are not mine but I do believe we will mod them!

    Nice! I have never heard any VR3 mods but still hope to someday, so I’m glad to see the mods continuing!
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  • Clipdat
    Clipdat Posts: 13,101
    edited August 2021
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    What kind of a fool would have you upgrade a speaker's crossovers before ever having heard them in stock form?
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  • Clipdat
    Clipdat Posts: 13,101
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    (It was me. I drop shipped them to Trey from A4L - $999 refurb pair!)
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  • Clipdat
    Clipdat Posts: 13,101
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    Sand cast resistors be gone!
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  • maxward
    maxward Posts: 1,740
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    I pity da fool!
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  • VR3
    VR3 Posts: 29,702
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    Gonna be amazeeeee
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Clipdat
    Clipdat Posts: 13,101
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    @VR3 post up the final parts list when you get a chance!
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  • pitdogg2
    pitdogg2 Posts: 27,779
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    :D:D:D
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  • VR3
    VR3 Posts: 29,702
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    I'm not everything will fit, duelund caps are bigger than the enclosure.

    Have a 10x10 storage shed to pair them with
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • msg
    msg Posts: 10,622
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    VR#2
    Clipdat wrote: »
    Can you make the crossover's outboard storage shed look like this?

    out12.jpg
    I disabled signatures.
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  • mhardy6647
    mhardy6647 Posts: 35,523
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    So -- I'm just curious -- if/when all y'all replace the iron core inductors with air core, how close do the replacement inductors match the DCR of the originals? Seems like there's quite a bit more copper wire (length) in the air core coils compared to the iron (or permalloy or whatever) cored originals, so - presumably - it's essential to use air coil inductors with really (really!) large-gauge wire to keep the DCR, umm, competitive? :)

    Speaking of air core inductors -- I've developed a taste for these rascals. I was able to convince myself that I heard a difference (to wit, an improvement) when I swapped them in (yes, using clip leads, of course -- I am me, after all...) for some normal perfect-lay wound wire air core inductors in the Frankenaltecs.

    ys3pp9zv24bi.jpg

    The Goertz foil coils aren't cheap, but they're also not frighteningly expensive... and I do like their purposeful appearance :) They look like they mean business.
    Perhaps kinda big for L200s, tho'.




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  • VR3
    VR3 Posts: 29,702
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    I was able to find an exact dcr match from mundorf. If I recall it is 12 or 14 awg, can't recall off hand.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 29,702
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    Foil inductors do have a particular sound, I like them but sometimes hard to find dcr matches in that variety
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Tony M
    Tony M Posts: 11,966
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    The "wood-winds" would sound pretty realistic.
    Most people just listen to music and watch movies. I EXPERIENCE them.

    “Anger is an acid that can do more harm to the vessel in which it is stored than to anything on which it is poured.”
    --Mark Twain.

    “If at first you don't succeed, then skydiving definitely isn't for you.” - Steven Wright
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  • VR3
    VR3 Posts: 29,702
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    Copper, only 2 of the four iron cores on the board... Would be an extremely large crossover with all air core inductors... Definitely would have to go external!
    ggtg3k02cclt.jpg

    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Clipdat
    Clipdat Posts: 13,101
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    Dats alotta coppa
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  • ALL212
    ALL212 Posts: 1,671
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    @VR3

    How’d you get the rings off? Maybe I should try a smaller crow bar?? :o

    I’ve got the L100’s and will put a pic of those parts in a post but I don’t want to make a mess either.
    Aaron
    Enabler Extraordinaire
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  • VR3
    VR3 Posts: 29,702
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    They pull off like a grill
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • ALL212
    ALL212 Posts: 1,671
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    Ahhh… got it!

    Thank you
    Aaron
    Enabler Extraordinaire
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  • ALL212
    ALL212 Posts: 1,671
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    You a… you a could cook up a couple more of those boards? Just the boards…

    Looks like I’ll be working on upgrades this winter.
    Aaron
    Enabler Extraordinaire
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  • VR3
    VR3 Posts: 29,702
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    Sure, just have to hit print 😝
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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