Whats up with these caps (monitor 10's)

McLoki
McLoki Posts: 5,231
edited June 2008 in Vintage Speakers
Well, I pulled the crossover out of the monitor 10's (series II) to verify what was in there prior to upgrading the crossovers. To be honest, I am not sure what I came up with....

I found the 12uf cap and 2.7ohm resistor stacked, as well as the 27uf cap as expected.

The 16uf cap that is supposed to be mylar per the schematic though appears to be another standard 12uf cap as well as a much larger 4.4uf cap. I could be mistaken, but here is a pic of the best I could see.....

Any suggestions?
Mains.............Polk LSi15 (Cherry)
Center............Polk LSiC (Crossover upgraded)
Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
Post edited by McLoki on
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Comments

  • Face
    Face Posts: 14,340
    edited June 2008
    Maybe they ran out of 16uf's that day.

    You have the SL2500 tweeter in your 10's?
    "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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  • McLoki
    McLoki Posts: 5,231
    edited June 2008
    yep. (SL2500).

    Just seems odd to use a standard 12uf coupled with a rather huge (in comparison) 4.4uf cap.... Also from looking at the ends of the cap, the 4.4 has seen better days. Just want to make sure I am purchasing the correct components.
    Mains.............Polk LSi15 (Cherry)
    Center............Polk LSiC (Crossover upgraded)
    Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
    Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
    Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
    Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
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  • Face
    Face Posts: 14,340
    edited June 2008
    Do you like the sound of the 2500? If not, here's your chance to use a different tweeter. Keep in mind, you'll also have to change inductors.

    If you like the 2500, just upgrade what you have there, 12, 16, and 27.

    EDIT: That 4.4 isn't THAT big. You should see the sizes of some aftermarket caps.
    "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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  • McLoki
    McLoki Posts: 5,231
    edited June 2008
    I actually like the sound of the 2500 a lot. (enough that I may have to look for some SDA's that use it)

    I plan to use sonicaps to upgrade (along with a mills resistor). I was going to go with a less expensive cap from parts express, but I got a good deal on the Monitor 10's so even with spending $150 or so on the caps, I will still be under $200 for the speakers. (not to mention the fact, that I just enjoy the hell out of listening to them... :) )

    BTW - I was just thinking the 4.4 was huge compared to the 12uf on top of it...
    Mains.............Polk LSi15 (Cherry)
    Center............Polk LSiC (Crossover upgraded)
    Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
    Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
    Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
    Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
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  • Face
    Face Posts: 14,340
    edited June 2008
    Gotcha...film or mylar vs electrolytic. Just wait till you see a 16uf Sonic Cap. :D You may have to get creative with cap placement. You'll probably need some sort of wire to extend the leads back down to the board. Do you have a hot glue gun? It probably wouldn't hurt to also have some zip ties on hand. Be sure to take pics.
    "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: 50,735
    edited June 2008
    The SL2500 was never used in the SDA series.
    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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  • george daniel
    george daniel Posts: 12,096
    edited June 2008
    Not trying to tell you what to do,,I got carried away with some monitor 7's,,,be sure to leave enough room/space to get those puppies back in the cabinet, as I had a cap extend a little too far off the board,of course,,stupid me did not realize this until it came time to put them back in :o. Good luck,,I think that you are going to be pleased when you are finished.
    JC approves....he told me so. (F-1 nut)
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  • McLoki
    McLoki Posts: 5,231
    edited June 2008
    F1nut wrote: »
    The SL2500 was never used in the SDA series.

    Crap - I thought I had seen some in 3.1tl's... Oh well, I think they use the same upgrade tweeter if I ever try to do a vintage home theater. I do like the sound of the 2500 though....

    Michael
    Mains.............Polk LSi15 (Cherry)
    Center............Polk LSiC (Crossover upgraded)
    Surrounds.......Polk LSi7 (Gloss Black - wood sides removed and crossovers upgraded)
    Subwoofers.....SVS 25-31 CS+ and PC+ (both 20hz tune)
    Pre\Pro...........NAD T163 (Modded with LM4562 opamps)
    Amplifier.........Cinepro 3k6 (6-channel, 500wpc@4ohms)
    · Share on FacebookShare on Twitter