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  1. #1

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    Default cautionary tale here

    I thought maybe my 2Bs finally went south w/ the x-overs still to be done. While turning cds which I find the cleanest sound out of all my sources I started to hear noises that I never heard before. Not music mind you but really offending noises. When I got these home originally the x-over standoffs were broken on both sets. The x-overs were effectively flying in air. When I did most of my mechanical mods I thought I resecured them w/ small ty-raps and a foam sheet in between the coil. I luckily opened just for the hell of it the whole right side and sure enough 2 big glaring problems. In my haste this cross-over was not secured and then what I think caused all this out of phase sound was the green wire was off the 6511 mid. All secured and back buttoned up and now they sound like before or as they should.
    Now, I know I have harped on doing the x-overs but sending them out at this time is not financially possible. Is there a real time moment that one knows the x-overs are really toast?
    2chl- Adcom 555- Onkyo P-301 pre- JVC-QL-A200 tt- Denon 1940 ci cdp- Samson PS-15 9 outlet- Niles Sp 6- 6 zone spkr selector- DCM TF 350s- ADC 303ax-KLH 331- Polk Audio '87 SDA 2Bs w/ ic cable (Dynamat extreme, black hole-5- Mills 0.5 resistor, liquid nails, RDO- 194 tweeters, Larry's rings, Armaflex gaskets, stained walnut tops )

    H/T- Toshiba au40" flat- Yamaha RX- V665 avr- YSD-11 Dock- I-Pod- Klipsch #500HD Speaker set- Sony ce 375 5 disc carosel cdp-

    Nikko 6065 receiver- JBL J2060

  2. #2

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    I have never had a XO just completely give out. That being said my growing speaker collection only dates back to early seventies and up... what I have noticed is the marked improvement in sound when upgrading XO parts with new higher quality repacements with far better tolerances than were available back then.

  3. #3

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    Lew, I can send you some Polk standoffs, so this doesn't keep happening.
    Home Theater/2 Channel:
    Front: SDA-2ATL
    Center: Custom Built http://www.polkaudio.com/forums/show...hannel-Project
    Surrounds & Rears: Custom Built http://www.polkaudio.com/forums/show...rround-Project
    Sonicaps, Mills, RDO-194s-198s, Dynamat & Hurricane Nuts.
    Pioneer Elite VSX-72TXV, Carver PM-350

    "So is there any tread left on those tires or is it just like throwing a hotdog down a hallway?"

    www.dhsspeakerservice.com

  4. #4

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    Quote Originally Posted by leftwinger57 View Post
    I have harped on doing the x-overs but sending them out at this time is not financially possible. Is there a real time moment that one knows the x-overs are really toast?
    They're toast.

    Can you solder?

  5. #5

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    Sounds like its time to bite the bullet. I'm sure you could do it yourself. I did my 7s. It wasn't really difficult, just take your time. There is plenty of advice here to get you through.
    HT
    Samsung PN50B860/Integra DTR 30.3/Rt55 Fronts
    Rt35i Surrounds/Cs1000p Center/PWS111 Sub
    2CH
    NAD 304 integrated/NAD 402 tuner/NAD 2400 amp
    Polk monitor 7, New Large Advents and Polk RT2000p
    BR
    Yamaha CR800/Polk monitor 5

  6. #6

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    do what i did...find some old stereo equipment that no one wants and tear it apart...use it to practice desoldering then solder it all back together...once you get your technique down its not really hard...but patience is key...don't just wing it, have a plan...
    Hafler XL-280 - NAD 1020 - Sansui TU-666 - B&O TX2/SoundSmith - Monitor 10-2A

  7. #7

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    Get the parts,, pull em out,,I'm sure that someone here will get it done.
    JC approves....he told me so. (F-1 nut)

  8. #8

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    Send Trey a message , he will get it done if you don't feel comfortable doing it.
    Home Theater
    Onkyo PR-SC5508 Sharp LC-70LE847U
    Emotiva XPA-5 Emotiva XPA-2 Emotiva UPA-2
    Front RTi-A9 Wide RTi-A7 Center CSi-A6 Surround FXi-A6 Rear RTi-A3 Sub 2x PSW505
    Sony BDP-S790 Dishnetwork Hopper/Joey Logitech Harmony One Apple TV
    Two Channel
    Oppo 105D BAT VK-500 w/BatPack SDA SRS 2.3 Dreadnought Squeezebox Touch Apple TV

  9. #9

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    Thanks I've hasseled Trey to no end. I just don't have the cash right now and that's the only factor limiting me doing this. Yes I've picked up odds and ends like lps and the Nikko but nothing that come close to the cost of sending them out which is my first choice. I can solder well actually from my alarm installing days and have both gas and electric guns. Following Gimpods site (and what a freakin site) is the best road map anyone could want for a diyer. Again I need things tested and since I know nothing of tolerances or values I have to send them out. There is something to be said of having the satisfaction of doing it youself but this I'll leave to Trey. Btw does anyone have Trey's shipping address in N.C. somewhere?
    2chl- Adcom 555- Onkyo P-301 pre- JVC-QL-A200 tt- Denon 1940 ci cdp- Samson PS-15 9 outlet- Niles Sp 6- 6 zone spkr selector- DCM TF 350s- ADC 303ax-KLH 331- Polk Audio '87 SDA 2Bs w/ ic cable (Dynamat extreme, black hole-5- Mills 0.5 resistor, liquid nails, RDO- 194 tweeters, Larry's rings, Armaflex gaskets, stained walnut tops )

    H/T- Toshiba au40" flat- Yamaha RX- V665 avr- YSD-11 Dock- I-Pod- Klipsch #500HD Speaker set- Sony ce 375 5 disc carosel cdp-

    Nikko 6065 receiver- JBL J2060

  10. #10

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    Tolerances or value's...?

    not sure what you mean...

    just replace value for value
    Hafler XL-280 - NAD 1020 - Sansui TU-666 - B&O TX2/SoundSmith - Monitor 10-2A

  11. #11

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    If your cash strapped for now just enjoy your polks. Sounds like you have diagnosed the problem and they sound good to you again. I have sets of Jap speakers that you probably wouldn't even make your dog listen to.

  12. #12

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    Quote Originally Posted by leftwinger57 View Post
    Thanks I've hasseled Trey to no end. I just don't have the cash right now and that's the only factor limiting me doing this. Yes I've picked up odds and ends like lps and the Nikko but nothing that come close to the cost of sending them out which is my first choice. I can solder well actually from my alarm installing days and have both gas and electric guns. Following Gimpods site (and what a freakin site) is the best road map anyone could want for a diyer. Again I need things tested and since I know nothing of tolerances or values I have to send them out. There is something to be said of having the satisfaction of doing it youself but this I'll leave to Trey. Btw does anyone have Trey's shipping address in N.C. somewhere?
    There is someone here on the forum that can do an excellent job on your crossovers at a reasonable price. He did mine and I was very happy with his work. Professional and fast service. See my signature line.
    SDA 2BTL Sonicaps Mills resistors RDO-198s New gaskets H-nuts Erse inductors Crossover upgrades by westmassguy
    Adcom GTP-450 preamp
    Adcom GFA-555 amp Upgrades & speaker protection added by OldmanSRS
    Pioneer DV-610AV DVD/CD player
    SDA CRS+ Hidden away in the closet

  13. #13

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    Lew, you can solder so you can do this. Very simple - get the parts list off the schematics for your speaker, order caps and resistors of the same value (you can leave the inductors alone for now to save money, though replacing them with higher quality ones makes for an audible improvement), and do one circuit board at a time. You don't need to use Gimpod's boards if you're short of cash, just used the originals.

    By doing one board at a time you can use the other for reference. Remove/replace one component at a time. Easy, peasy.

    I'm sure WMG and VR3 do quality work, but if you're trying to save $, DIY is the way to go.
    "Science is suppose to explain observations not dismiss them as impossible" - Norm on AA; 2.3TL's w/sonicaps/mills, polyswitches removed, Lg Solen inductors, RD-0198's, MW's dynamatted, Armaflex speaker gaskets, H-nuts, brass spikes, Cardas CCGR binding posts, upgraded IC Cable, Black Hole Damping Sheets (3" strips) installed on back wall behind MW's & Tweeters, interior of cabinets sealed, AI-1 interface with 1000VA transformer

  14. #14

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    Again guys thanks. The noise is back and couldn't take it any more so I pulled the x-overs just a few minutes ago. Believe it or not I had a box w/ both Trey's address and mine all ready to go for months. They are packed just need some cash and off they go. Then we'll see what you all are talking about. It's a shame they are my favorite set but that's why I have 3 others to bounce from.
    2chl- Adcom 555- Onkyo P-301 pre- JVC-QL-A200 tt- Denon 1940 ci cdp- Samson PS-15 9 outlet- Niles Sp 6- 6 zone spkr selector- DCM TF 350s- ADC 303ax-KLH 331- Polk Audio '87 SDA 2Bs w/ ic cable (Dynamat extreme, black hole-5- Mills 0.5 resistor, liquid nails, RDO- 194 tweeters, Larry's rings, Armaflex gaskets, stained walnut tops )

    H/T- Toshiba au40" flat- Yamaha RX- V665 avr- YSD-11 Dock- I-Pod- Klipsch #500HD Speaker set- Sony ce 375 5 disc carosel cdp-

    Nikko 6065 receiver- JBL J2060

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