My Mona-Lisa, SDA-CRS+ Conversion for 4.1 TL mod

audiocr381ve
audiocr381ve Posts: 2,588
edited October 2011 in Vintage Speakers
Gentlemen, I've decided to convert my Blade Blade, Dual Crossover, 1986 SDA-CRS+'s to a newer version CRS+. I purchased newer version crossovers from Vr3MxStyler2k3 (single boards) that will enable me to do this. It's the re-wiring and mounting that I will need help with understanding. I'll post tons of pics, ask a lot of questions, and be overly descriptive to help the next guy down the road.

Goal:
I want these to be the best that my budget will allow and the reason for conversion is so I can perform the 4.1 TL mod. I haven't seen anyone perform the 4.1 TL to dual board (aka crossovers), b/b (blade/blade), 1986 CRS+. Their are three versions of the CRS+'s, and this is the only one that, as far as I can tell, can't be "TL'ed". If someone has done this with success, PLEASE share.

First question, with the newer version single boards, which speakers will I need to make these a true newer version CRS+? Currently, they are all 6510's. I should probably put a WTB ad out asap.
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  • audiocr381ve
    audiocr381ve Posts: 2,588
    edited October 2011
    Found DK's thread from when he did the 4.1TL Mod to his 1989 version CRS+'s.

    http://www.polkaudio.com/forums/showthread.php?46489-4.1TL-Modification-for-1989-version-SDA-CRS

    Looks like I'll need two 6511's. Please step in if I'm missing something :redface:

    I do know that the newer version CRS+'s had different PR's (passive radiators). I'll have to look into that.
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  • Dennis Gardner
    Dennis Gardner Posts: 4,861
    edited October 2011
    Inductor upgrade may be your biggest stumbling block, unless you have this covered already.
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
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  • audiocr381ve
    audiocr381ve Posts: 2,588
    edited October 2011
    Dennis Gardner wrote: »
    Inductor upgrade may be your biggest stumbling block, unless you have this covered already.

    I'm probably going to use the Erse Super Q 17mh 16awg that I used with my 2B TL's, which are a whole lot smaller than the Solen's. I don't think that's going to be a big issue. Thanks for chiming in.

    Does anybody see a problem with what I'm attempting other than the guy who's doing the work? :cheesygrin:

    The point of no return... lol

    s,o,s.jpg
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