2.3 x-over upgrade..more caps?

Audioquest
Audioquest Posts: 104
edited November 2010 in Vintage Speakers
I was just looking over the crossover schematic, and it shows some extra caps on the high side that I have not seen in any of the posts or lists up until now.

750 pf times 3

I don't see these in any of the crossover board photos either. They appear on Polk drawing P0162003

Any ideas on this?
HT: Polk SDA SRS 2.3 main fronts, Klipsch RC-25 center channel, Polk RTi-150 rears, M&K V1B sub, Denon AVR-5800, Samsung 52" LCD, Sony BDP-S550

2 Channel: Carver ALS Platinum, Audio Research LS-2B preamp, Counterpoint SA-100 amplifier, Integra CD player, Denon SL7D tt, TC750 phono pre, Nikko tuner
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Comments

  • jinjuku
    jinjuku Posts: 1,523
    edited November 2010
    Can you link or post the schematic?
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  • Audioquest
    Audioquest Posts: 104
    edited November 2010
    jinjuku wrote: »
    Can you link or post the schematic?

    Here it is. Actually 2 750pf's not 3...too much coffee this am!

    xoverjpg.jpg
    HT: Polk SDA SRS 2.3 main fronts, Klipsch RC-25 center channel, Polk RTi-150 rears, M&K V1B sub, Denon AVR-5800, Samsung 52" LCD, Sony BDP-S550

    2 Channel: Carver ALS Platinum, Audio Research LS-2B preamp, Counterpoint SA-100 amplifier, Integra CD player, Denon SL7D tt, TC750 phono pre, Nikko tuner
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  • george daniel
    george daniel Posts: 12,096
    edited November 2010
    you do not need to replace the 750 silver micas,, just toss them,, as you are replacing the old caps with premium caps,there is no need for them(750's) anymore.
    JC approves....he told me so. (F-1 nut)
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  • Face
    Face Posts: 14,340
    edited November 2010
    The 750pf in parallel with the 12uf cap is only a bypass cap and shouldn't be replaced when upgrading crossovers. FYI, the actual caps are very small, maybe that's why you missed them?
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
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  • F1nut
    F1nut Posts: 50,567
    edited November 2010
    just toss them

    Yep.
    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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  • bikerboy
    bikerboy Posts: 1,211
    edited November 2010
    Hi,
    There's my thread on the 2.3 rebuild.

    http://www.polkaudio.com/forums/showthread.php?t=104415

    Have fun, its worth it!
    Main system: Lyngdorf TDAI 2170 w/ Pioneer 42" plazma-> Polk LSiM 703 w/Tivo, Marantz tuner, BRPTT: Nothingham Spacedeck-> Pioneer PL L1000 linear arm-> Soundsmith DL 103R-> SUT->Bottlehead ErosDigital: I3 PC w/ Jriver playing flac -> Sonore Ultrarendu -> Twisted Pair Audio ESS 9028 w/ Mercury IVY Vinyl rips: ESI Juli@24/192-> i3 PC server
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  • Audioquest
    Audioquest Posts: 104
    edited November 2010
    AHHHHHHHHHH now it's clear. Didn't see that post before. Thanks all!
    HT: Polk SDA SRS 2.3 main fronts, Klipsch RC-25 center channel, Polk RTi-150 rears, M&K V1B sub, Denon AVR-5800, Samsung 52" LCD, Sony BDP-S550

    2 Channel: Carver ALS Platinum, Audio Research LS-2B preamp, Counterpoint SA-100 amplifier, Integra CD player, Denon SL7D tt, TC750 phono pre, Nikko tuner
    · Share on FacebookShare on Twitter