1986 SDA CRS+'s and 1990 SDA 2B Crossovers...

Toolfan66
Toolfan66 Posts: 17,244
edited April 2011 in Vintage Speakers
I have a set of 1986 CRS+'s they have the blade/blade and 2 MW6510's.

My mind was set on doing the 4.1tl mod on them, I started looking at DK's schematics for this mod and saw that it required the pin/blade and the two MW6511's (1990 CRS+) someone said I still could tl these and I just ended up putting it on the back burner, well last week I found a set of 2B crossovers on eBay for $50, looking at the schematics of both the 1990 CRS+ as well as the 2B's they seem to be identical (inductors as well) and should be able to mod my 1996 CRS+'s to the 4.1tl's, I have the RDO-198's as well as the MW6511's, my 2B crossovers came with the pin/blade binding post plates as well with all the wiring harnesses..

Anyone see any reason why I can't do this upgrade/mod with the 2B crossovers?? I think I'm good to go from what I see except placing my order with Sonicraft..

Larry.
Post edited by Toolfan66 on
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Comments

  • gimpod
    gimpod Posts: 1,793
    edited April 2011
    As long as you got the 16mH inductor with those 2B crossovers. You've got right crossover and drivers, Your good to go.:smile:

    Hey you want to sell me the left-over MW-6510's pretty please.
    “The two most important days in your life are the day you are born and the day you find out why.” ~ Mark Twain
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  • F1nut
    F1nut Posts: 50,566
    edited April 2011
    One difference that may or may not affect the over all results. The pin/blade CRS+ uses a SW102 passive, while the blade/blade version uses the SW100. They will be the same size, just tuned differently.
    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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  • Toolfan66
    Toolfan66 Posts: 17,244
    edited April 2011
    F1nut wrote: »
    One difference that may or may not affect the over all results. The pin/blade CRS+ uses a SW102 passive, while the blade/blade version uses the SW100. They will be the same size, just tuned differently.

    Thanks Jesse, I didn't think about the passives and I think I have 2 SW102's I will have to look.. It's times like these that I'm glad I have a closet full of polk vintage parts!!!
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  • Toolfan66
    Toolfan66 Posts: 17,244
    edited April 2011
    I just went and looked in my goody closet, I have 2 passives that have no markings not sure if they are SW102's or not..
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  • F1nut
    F1nut Posts: 50,566
    edited April 2011
    Larry, there should be hand written markings in white on the back.
    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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  • Toolfan66
    Toolfan66 Posts: 17,244
    edited April 2011
    F1nut wrote: »
    Larry, there should be hand written markings in white on the back.

    Nothing on these two Jesse not even a sticker that you sometimes see..The two in the CRS's are marked, and the two I have with no markings look just like the two in the CRS's..
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  • F1nut
    F1nut Posts: 50,566
    edited April 2011
    It's probably Stu's fault......................................runs and ducks for cover.:eek:
    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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  • Toolfan66
    Toolfan66 Posts: 17,244
    edited April 2011
    There is a pair on ebay for $40 but I'm not sure it's worth it..
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  • Toolfan66
    Toolfan66 Posts: 17,244
    edited April 2011
    I just noticed the little white stickers on the 2B crossovers and they say 2B and CRS.. Looking forward to this project again. I have had them apart for some time now, the rings have been instaled a few months ago as well..LOL..
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  • Toolfan66
    Toolfan66 Posts: 17,244
    edited April 2011
    Clarity MR caps???:eek:
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  • Toolfan66
    Toolfan66 Posts: 17,244
    edited April 2011
    1986 CRS+ 2 piece crossovers..
    crossovers002.jpg
    crossovers003.jpg

    1990 2B/CRS+ crossovers..
    crossovers004.jpg
    crossovers005.jpg
    crossovers006.jpg
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  • Toolfan66
    Toolfan66 Posts: 17,244
    edited April 2011
    I think I got a good deal on the crossovers, Wish I had the parts to start upgrading today..
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