Simple sda 2b tl upgrade question

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Comments

  • audioluvraudioluvr Posts: 1,491
    I've blown 2 RDO 194's listening to Steve Miller Band on songs with heavy distorted guitar riffs. I don't think the 194's are built as well as the 198's because I rarely hear of anyone here having issues with them.
    Home System:
    SDA 1C's - Full mod with the help by Dave...
    1000 Va Dreadnought- w/ WireWorld Mini-Eclipse cables
    WireWorld Mini-Eclipse 7 speaker cables
    WireWorld Silver Eclipse IC's
    Cambridge Audio Azur 851N - DAC/Streamer
    Parasound Halo C-2 Pre/pro
    B&K M200 Sonata Monoblocks
    BLE-Design 16mm Power Cables
    Denon DVD 2900

    Barn system:
    SDA SRS 2.3's Full mod done by myself
    Carver C-1 pre
    Carver M1.5t
    BluDenso - Bluetooth receiver/DAC
  • F1nutF1nut Posts: 43,152
    I think you should examine why you blew a new tweeter before doing anything else.
    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

  • audioluvraudioluvr Posts: 1,491
    I don't know Jesse. I had my amps tested for DC current but other than that not sure what else could have caused it. Haven't had an issue since with the replacements.
    Home System:
    SDA 1C's - Full mod with the help by Dave...
    1000 Va Dreadnought- w/ WireWorld Mini-Eclipse cables
    WireWorld Mini-Eclipse 7 speaker cables
    WireWorld Silver Eclipse IC's
    Cambridge Audio Azur 851N - DAC/Streamer
    Parasound Halo C-2 Pre/pro
    B&K M200 Sonata Monoblocks
    BLE-Design 16mm Power Cables
    Denon DVD 2900

    Barn system:
    SDA SRS 2.3's Full mod done by myself
    Carver C-1 pre
    Carver M1.5t
    BluDenso - Bluetooth receiver/DAC
  • F1nutF1nut Posts: 43,152
    edited July 7
    audioluvr wrote: »
    I don't know Jesse. I had my amps tested for DC current but other than that not sure what else could have caused it. Haven't had an issue since with the replacements.

    It seems I was writing my comment while you were posting yours as mine was directed at the other guy with a blown tweeter. Anyway, I can't imagine the build quality between the 194 and 198 is different, but what do I know.
    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

  • windstrikerwindstriker Posts: 78
    1. Can speaker poping take out a tweeter when turning the preamp on and off?

    2. I just purchased a gimpod board and on his site he lists a 2.7 resistor but the closest i see in the mra-12 section is 2,3,and 2.7k will any of those work?
  • txcoastal1txcoastal1 Posts: 10,665
    Are you following this:

    ON: source/preamp/amp; OFF: amp/preamp/source.
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC
  • windstrikerwindstriker Posts: 78
    edited July 8
    No... no i'm not. I had been told in the past to turn the amp on first then the pre amp otherwise it could pop a tube. Is this incorrect?

    turn off has been pre then amp
  • txcoastal1txcoastal1 Posts: 10,665
    You still want to follow above. If you're running a tube pre, when turning it on then let the tubes fully stabilize
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC
  • windstrikerwindstriker Posts: 78
    Ok thanks, I will follow your advice.

    Any advice on the resistors?
  • txcoastal1txcoastal1 Posts: 10,665
    Mills
    Replace in both speakers
    2-channel: Modwright KWI-200 Integrated, Dynaudio C1-II Signatures
    Desktop rig: LSi7, Polk 110sub, Dayens Ampino amp, W4S DAC/pre, Sonos, JRiver
    Gear on standby: Melody 101 tube pre, Unison Research Simply Italy Integrated
    Gone to new homes: (Matt Polk's)Threshold Stasis SA12e monoblocks, Pass XA30.5 amp, Usher MD2 speakers, Dynaudio C4 platinum speakers, Modwright LS100 (voltz), Simaudio 780D DAC
  • windstrikerwindstriker Posts: 78
    edited July 8
    Self- Delete: answered my question with a little searching
  • windstrikerwindstriker Posts: 78
    Yesterday I was getting confused with buying the resistors because I didn't know the difference between Mills & the other version of Mills. I emailed Sonic Craft about it and they gave me a reply I thought I would post that reply, just in case if anybody else got confused.

    "All our Mills are true "NOS" Mills (made in the USA). Mills was purchased by Vishay Americas. They moved production to Mexico. The product was unusable to "us" the first couple of years. Vishay noticed that we were a top 3 purchaser from Mills. They wondered why we had not placed an order (3+ years into their ownership). They asked, and I told them...

    They said they would do what it took to earn our business. The parts that we have purchased from them are 99.8% as good sonically, and over a 100% in every other category:"
  • VSAT88VSAT88 Posts: 723
    +2^. Especially now that PA / Merger has went 100% into action.
  • windstrikerwindstriker Posts: 78
    I'm about to install my new crossover using gimpod board and I noticed they noticed something. The negative and positive on the P1 input is reverse from the P1 in put on the original board. Do I need to rewire the harness coming from my speaker to match this or is this the way it should be?

    6h7amklbj0hg.jpg
    4hv51f1lmo66.jpg
  • F1nutF1nut Posts: 43,152
    I believe that is a misprint on the board, but let's ask @westmassguy to check it out.
    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

  • westmassguywestmassguy Posts: 6,458
    Tony's @gimpod boards are correct. Some OEM boards were apparently misprinted.
    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
    Cables: Speaker: Furez 10/2 with GLS Locking Banana Plugs
    Interconnect: Furez 10/2 with SpeakONs
    ICs: Custom Furez by Douglas Connections
    Den:
    Bose 901 Series II Continentals Restored, Re-Built Equalizer with Elna Silmic IIs, Sonicaps, and Silver Mica Caps
    Carver CT-3 Pre, Carver C-500

    dhsspeakerservice.com/
    Exclusive Distributor of Gimpod's Custom SDA Circuit Boards

    "And keep her under 70, would you, huh? Betty likes a slow ride"
  • westmassguywestmassguy Posts: 6,458
    Old and New. The date on the OEM board is 4/11/90. Maybe the earlier boards were misprinted.


    euce9l8q47tn.jpg




    Home Theater/2 Channel:
    Front: SDA-2ATL forum.polkaudio.com/discussion/143984/my-2as-finally-finished-almost/p1
    Center: Custom Built forum.polkaudio.com/discussion/150760/my-center-channel-project/p1
    Surrounds & Rears: Custom Built forum.polkaudio.com/discussion/151647/my-surround-project/p1
    Sonicaps, Mills, RDO-194s-198s, Dynamat, Hurricane Nuts, Blackhole5
    Pioneer Elite VSX-72TXV, Carver PM-600, SVS PB2-Plus Subwoofer
    Cables: Speaker: Furez 10/2 with GLS Locking Banana Plugs
    Interconnect: Furez 10/2 with SpeakONs
    ICs: Custom Furez by Douglas Connections
    Den:
    Bose 901 Series II Continentals Restored, Re-Built Equalizer with Elna Silmic IIs, Sonicaps, and Silver Mica Caps
    Carver CT-3 Pre, Carver C-500

    dhsspeakerservice.com/
    Exclusive Distributor of Gimpod's Custom SDA Circuit Boards

    "And keep her under 70, would you, huh? Betty likes a slow ride"
  • windstrikerwindstriker Posts: 78
    hmmm weird, maybe its because I have a transitional 2b. IE early crossover printing?
  • windstrikerwindstriker Posts: 78
    So ya i followed the wires. Definently a miss print on the original board.
  • windstrikerwindstriker Posts: 78
    edited July 19
    Update finished the crossover and ive started burning them in. So far so good.

    Question i read on another post somewhere that transitional 2bs cant take the dreadnaught mod. Is this true? If so y? I wasnt planing on doing it but since ive come this far i thought i might eventualy do it.
  • F1nutF1nut Posts: 43,152
    You would need to connect the large blade post to the negative binding post.
    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

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