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  1. #1

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    Default Goodwill finds.........

    Hello all:

    I just pick up a pair of ADS L780/2 speakers at the local Goodwill store for $24.99 all drivers look intact and they need to be clean but not major scratches on the cabinets. I will have to wait till I get home tonight to fire them up. and see if they work.
    There is a bit of rust around the woofer but no major things other that they are dusty. Any recommendations what to look before I get them connected to the amp.

    cheers.

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    Last edited by Irrenhaus; 12-10-2012 at 04:05 PM. Reason: Edit Image
    AVR-Onkyo709
    AMP- Parasound 2125, Adcom 585
    Mains for HT and some Music- RTi12s
    Main for Music only- Linn Keilidh or Usher V-601
    PreAmp for Music: B&K AVP-3090
    Rear- RTi8s
    Center-CSi5
    Sub-JBL L8400P 12"
    Player- Oppo BDP-103
    TT: Philips 406
    Phono Pre-Amp: BBE FJB-200X

    Bedroom rig:
    Pionner Elite VSX-30
    Onkyo CS-5VL SACD Player
    Polk Audio LS70
    Hunting for a sub...

  2. #2

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    Connect a 9v battery to em and you can test if they work without any music. The 9v battery will make the woofers move so you can check for frozen magnets and whatnot without risk to your amp.

    http://www.soundspeakerrepair.com/sp...+Instructions/
    Advice is free, the Flea Market is earned - F1Nut

    Main HT: APC H15 | Pio 51FD | Uverse DVR | Xbox 360 | Squeezebox Classic | Integra DTR 5.9 | Carver AV-705x & M1.0t MKII Opt002 | LSi 15 | LSiC | LSi F/x | Kimber Hero IC & 8VS SC

    Office Rig: Win 7 -> DacMagic w/ Pangea PSU | Pro-ject Debut III | Sunfire TGP-II | Parasound HCA-750ii | Polk RTA 11TL | Cables TBA

    Bedroom: Uverse DVR | Roku 2 | Samsung LCD | SurroundBar 2000

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  3. #3

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    I'd just go for it - but I keep a cache of "test equipment" around - For the record I worry far more about amplifiers damaging loudspeakers than the other way 'round.

    A fine deal - they are very good sounding loudspeakers.

    I've got a pair of their forebears - L-710 - playing even as I type this.
    Last edited by mhardy6647; 12-10-2012 at 06:11 PM.
    all the best,
    mrh

  4. #4

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    Quote Originally Posted by EndersShadow View Post
    Connect a 9v battery to em and you can test if they work without any music. The 9v battery will make the woofers move so you can check for frozen magnets and whatnot without risk to your amp.

    http://www.soundspeakerrepair.com/sp...+Instructions/
    Thanks for the tip.
    AVR-Onkyo709
    AMP- Parasound 2125, Adcom 585
    Mains for HT and some Music- RTi12s
    Main for Music only- Linn Keilidh or Usher V-601
    PreAmp for Music: B&K AVP-3090
    Rear- RTi8s
    Center-CSi5
    Sub-JBL L8400P 12"
    Player- Oppo BDP-103
    TT: Philips 406
    Phono Pre-Amp: BBE FJB-200X

    Bedroom rig:
    Pionner Elite VSX-30
    Onkyo CS-5VL SACD Player
    Polk Audio LS70
    Hunting for a sub...

  5. #5

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    Talk about stepping in a bucket of @&#@ and comming out smelling like a rose. Nice deal.
    Main Rig:
    Krell KAV 250a
    McIntosh MC 2120 bi-amped
    Into JBL L123 drivers
    Rane external crossover.
    MIT exp 1 ic's
    Perreaux SA33 class A preamp
    AQ kingcobra ic's
    ADCOM GDA 700 DAC ( MODDED)
    YAMMY CDC-665
    Marantz 6100 tt w/pickering XV-15/625E cart.
    Monster HTS 3600 power conditioner
    POLK RTA-12C'S W/ RDO194 TWEETS, clarity ESA caps mills risistors (full mod)
    MIT exps2 speaker cable

  6. #6

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    1.5 volts is enough

  7. #7

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    Nice find. There's never anything at my local Goodwill except VCR's and 12" TV's.
    My humble setup...

    ...is no more.

  8. #8

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    ^ ditto
    --Gary--

  9. #9

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    Well here is a quick update. Got home tested with a 1.5v batter and look good. But I am getting a reading of 4ohm at the terminals instead of 8ohm.
    With music one of the woofers sounds blown took a quick look inside and measured all drivers:
    woofer: 4ohm
    mid: 4ohm
    tweeter: 3.5ohm

    Next step for the weekend I will take a look at the crossovers and see if the caps are okay. Any tips.

    Cheers
    AVR-Onkyo709
    AMP- Parasound 2125, Adcom 585
    Mains for HT and some Music- RTi12s
    Main for Music only- Linn Keilidh or Usher V-601
    PreAmp for Music: B&K AVP-3090
    Rear- RTi8s
    Center-CSi5
    Sub-JBL L8400P 12"
    Player- Oppo BDP-103
    TT: Philips 406
    Phono Pre-Amp: BBE FJB-200X

    Bedroom rig:
    Pionner Elite VSX-30
    Onkyo CS-5VL SACD Player
    Polk Audio LS70
    Hunting for a sub...

  10. #10

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    What your meter is telling you is just DC resistance, and therefore won't match the impedance rating of the speaker. So don't let those values bother you. Impedance is a measurement of resistance to current in AC circuits that fluctuates with frequency. So the rating you see on speakers is really just an average over the typical operating range. Hence the reason you will see it occasionally listed as "nominal" impedance.
    HT
    Mits WD-65737, DirecTV, Oppo DV-970HD, XBOX ONE, Yamaha RX-A1030, Parasound Halo A23, Rotel RB-985, Music Hall MMF-7, Parasound PPH-100, LSi-15, LSi-C, LSi-FX, LSi-7, PSW-1000, Monster HTS2600

    2 CH
    Parasound Halo P3, Parasound Halo A21, Sutherland Ph.D, VPI Classic 3 w/ 3D arm, Arcam CD72T, B&W 802 S3, Monster HTS2500,

  11. #11

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    I never tried the 9v battery test on a built speaker I figured the xover would absorb the voltage before the drivers got anywhere but I will try it , still $25 if if any parts are good you came out ahead !
    ps: dont try a 9v on a tweeter :)

  12. #12

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    Quote Originally Posted by 20hz View Post
    I figured the xover would absorb the voltage before the drivers got anywhere
    It will with some designs.
    2.1: Peachtree DAC●iT>Yaqin MC-10L w/6CA7-EH, Voskhod 6N1P-EV>polkaudio RT25i, PSW202

    5.1: ATI HD5850 HDMI Bitstreaming>Denon AVR-1910>polkaudio RT7, CS350-LS, RT3, PSW505, Sony Bravia KDL-52W3000

  13. #13

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    Well found this place online I think after lookig more in depth to the speakers over the weekend I will see if I get the drivers service. Only spent 25.00 on them so few more bucks is not a bad deal.

    http://www.adsspeakersservice.com/

    Cheers
    AVR-Onkyo709
    AMP- Parasound 2125, Adcom 585
    Mains for HT and some Music- RTi12s
    Main for Music only- Linn Keilidh or Usher V-601
    PreAmp for Music: B&K AVP-3090
    Rear- RTi8s
    Center-CSi5
    Sub-JBL L8400P 12"
    Player- Oppo BDP-103
    TT: Philips 406
    Phono Pre-Amp: BBE FJB-200X

    Bedroom rig:
    Pionner Elite VSX-30
    Onkyo CS-5VL SACD Player
    Polk Audio LS70
    Hunting for a sub...

  14. #14

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    Have you checked the fuses? I think those 780's have 2 per x-over.

  15. #15

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    Hey

    @DaveMuell I check but I think the 780 had a fuse but the 780 v2 don?t.

    I spoke to the person in Arizona and he said he will recone all drivers and give me a good price plus a discount to do all. Even know the condition of the speakers I like how they sound at lower volumes and how they blend in.
    Now a pair of LINN Keilidh with the bases are available locally. It is about the same price of the rebuild. Damm what do I do, have plans to audition them tomorrow. They are in mint condition and I can always do the ADS later........

    I am just looking for a Merry Christmas to Me Present...........lol
    Last edited by Irrenhaus; 12-13-2012 at 12:02 AM. Reason: wording
    AVR-Onkyo709
    AMP- Parasound 2125, Adcom 585
    Mains for HT and some Music- RTi12s
    Main for Music only- Linn Keilidh or Usher V-601
    PreAmp for Music: B&K AVP-3090
    Rear- RTi8s
    Center-CSi5
    Sub-JBL L8400P 12"
    Player- Oppo BDP-103
    TT: Philips 406
    Phono Pre-Amp: BBE FJB-200X

    Bedroom rig:
    Pionner Elite VSX-30
    Onkyo CS-5VL SACD Player
    Polk Audio LS70
    Hunting for a sub...

  16. #16

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    Quote Originally Posted by Irrenhaus View Post
    Hey

    @DaveMuell I check but I think the 780 had a fuse but the 780 v2 don?t.

    I spoke to the person in Arizona and he said he will recone all drivers and give me a good price plus a discount to do all. Even know the condition of the speakers I like how they sound at lower volumes and how they blend in.
    Now a pair of LINN Keilidh with the bases are available locally. It is about the same price of the rebuild. Damm what do I do, have plans to audition them tomorrow. They are in mint condition and I can always do the ADS later........

    I am just looking for a Merry Christmas to Me Present...........lol
    Hey sorry for keep asking. But even know I am asking about non Polk speaker(I do love my 12's) it always help to get info on other brands that you the Polk comunity have try and have some insight on and is always welcome.......cheers
    AVR-Onkyo709
    AMP- Parasound 2125, Adcom 585
    Mains for HT and some Music- RTi12s
    Main for Music only- Linn Keilidh or Usher V-601
    PreAmp for Music: B&K AVP-3090
    Rear- RTi8s
    Center-CSi5
    Sub-JBL L8400P 12"
    Player- Oppo BDP-103
    TT: Philips 406
    Phono Pre-Amp: BBE FJB-200X

    Bedroom rig:
    Pionner Elite VSX-30
    Onkyo CS-5VL SACD Player
    Polk Audio LS70
    Hunting for a sub...

  17. #17

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    How do I close a thread. I will move this one to the 2 channel side.

    Cheers
    AVR-Onkyo709
    AMP- Parasound 2125, Adcom 585
    Mains for HT and some Music- RTi12s
    Main for Music only- Linn Keilidh or Usher V-601
    PreAmp for Music: B&K AVP-3090
    Rear- RTi8s
    Center-CSi5
    Sub-JBL L8400P 12"
    Player- Oppo BDP-103
    TT: Philips 406
    Phono Pre-Amp: BBE FJB-200X

    Bedroom rig:
    Pionner Elite VSX-30
    Onkyo CS-5VL SACD Player
    Polk Audio LS70
    Hunting for a sub...

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