Stupid Blade/Blade IC question...

ZLTFUL
ZLTFUL Posts: 5,648
edited March 2014 in Vintage Speakers
The polarity switch is done internally in the speaker's wiring and not in the wire itself correct?

I am ordering up the start of the upgrades/mods for the SDA 2s and thought I would start with the part I am missing first...the IC.
Plan is to follow Ray's lead and make a cable myself using AQ 14/2 Flex series cable with XLR 90* males into metal XLR females. Ordering the parts now but I wanted to ask the question while it was still in my head.
"Some people find it easier to be conceited rather than correct."

"Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
Post edited by ZLTFUL on
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  • pitdogg2
    pitdogg2 Posts: 25,442
    edited March 2014
    ZLTFUL wrote: »
    The polarity switch is done internally in the speaker's wiring and not in the wire itself correct?

    Correct the only thing that the B/b does is make sure you cannot switch it to create a direct short.
    ZLTFUL wrote: »
    I am ordering up the start of the upgrades/mods for the SDA 2s and thought I would start with the part I am missing first...the IC.
    Plan is to follow Ray's lead and make a cable myself using AQ 14/2 Flex series cable with XLR 90* males into metal XLR females. Ordering the parts now but I wanted to ask the question while it was still in my head.

    just make sure you do not get confused while in the cabinet. I wrote on the cabinet wall to be positive of the way wire was hooked up. i.e. Blue wire large blade white wire small blade. then just the opposite on the other cabinet. White wire large blade blue wire small blade. There will be no confusion down the line if you ever get rid of them
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  • ZLTFUL
    ZLTFUL Posts: 5,648
    edited March 2014
    Thanks man. I was fairly certain of that but just wanted to make absolutely sure.
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
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  • pitdogg2
    pitdogg2 Posts: 25,442
    edited March 2014
    Both do carry signal unlike the P/B which only the "pin" carries a signal unless you have a dreadnaught then it "blade" carries the ground.
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  • F1nut
    F1nut Posts: 50,554
    edited March 2014
    I have one suggestion, SpeakOn connectors.
    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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  • ZLTFUL
    ZLTFUL Posts: 5,648
    edited March 2014
    F1nut wrote: »
    I have one suggestion, SpeakOn connectors.

    Maybe eventually Jesse...when I have some SDAs I plan on keeping. These are "getting my feet wet" SDAs and I will ultimately flip them to put cash towards 3.1s or 2.3s (Would love to have a fully outfitted/updated set of 1.2s eventually)
    For now, the locking XLRs will be "good enough".
    "Some people find it easier to be conceited rather than correct."

    "Unwad those panties and have a good time man. We're all here to help each other, no matter how it might appear." DSkip
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  • [Deleted User]
    [Deleted User] Posts: 365
    edited March 2014
    My blade/blade SRS SDA 2s were converted to banana posts and speaker wire. Anything inherently wrong with that setup?
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  • pitdogg2
    pitdogg2 Posts: 25,442
    edited March 2014
    TForan wrote: »
    My blade/blade SRS SDA 2s were converted to banana posts and speaker wire. Anything inherently wrong with that setup?

    only if something falls across them to short out....Speakon's are the new flavor and work tremendously well. When I redid mine I also used good binding post's and I also put heat shrink tubing on the post also just in case(red on red, black on black). Shrunk down with enough to cover the ends so that the only metal seen is in the hole for banana plugs.
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  • Schurkey
    Schurkey Posts: 2,101
    edited March 2014
    ZLTFUL wrote: »
    For now, the locking XLRs will be "good enough".
    How much current are XLR connectors good for? Given enough amplifier power, and musical signal with little correlation between the channels, Matthew Himself said to use an isolation transformer in the SDA interconnect that doesn't saturate below "at least" five amps.

    Granted that most amplifiers won't throw that much power--and most listeners won't have the volume high enough to matter; but I wouldn't want the SDA connection to be under-rated for amperage.

    I thought XLR connectors were typically used for voltage but not amperage duty.
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  • pitdogg2
    pitdogg2 Posts: 25,442
    edited March 2014
    Ray AKA DarqueKnight here was the first to advocate the XLR for SDA IC here and had a thread on them. So yes they will work just fine.
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  • zingo
    zingo Posts: 11,258
    edited March 2014
    XLR are used for low voltage and current signal connections, not high current speaker connections.

    There is nothing wrong with using binding posts for the SDA connection, but the next buyer may be confused and hook up his amp to the wrong set of binding posts! :eek: Having separate SpeakOn connections and binding post shows that these are two different connections, and should be treated accordingly.
    Jake
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  • pitdogg2
    pitdogg2 Posts: 25,442
    edited March 2014
    zingo wrote: »
    There is nothing wrong with using binding posts for the SDA connection, but the next buyer may be confused and hook up his amp to the wrong set of binding posts! :eek:

    Correct that is the biggest pitfall to binding post as SDA connection. When I did mine I labeled as such SDA connection and Amp connection. Unless someone really wants mine I most likely will have them for a long time to come...
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  • westmassguy
    westmassguy Posts: 6,850
    edited March 2014
    zingo wrote: »
    XLR are used for low voltage and current signal connections, not high current speaker connections.

    There is nothing wrong with using binding posts for the SDA connection, but the next buyer may be confused and hook up his amp to the wrong set of binding posts! :eek: Having separate SpeakOn connections and binding post shows that these are two different connections, and should be treated accordingly.
    That's not true. Many pro speakers used XLR and 1/4" together. Mostly vintage stuff. Today it's mostly SpeakOns.
    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

    dhsspeakerservice.com/
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