Sonus Faber X-Over Pictures

NJPOLKER
NJPOLKER Posts: 3,474
edited March 2010 in Speakers
I just had to do it. After to listening to Fleetwood Mac Rumors while I was home alone for an hour I decided I will pull the lower driver and look around.
I was not sure I should but Jesse told me last night open them up and look around. Thats all the vote of confidence I needed.
Since they are in mint condition/not a scratch anywhere I had to be very careful and I was. Thankfully it was simple and I did the right thing by pulling the lower driver because the x-over resides right behind it and the very nice insulation. The insulation is so soft I had to rub my buddy on it for awhile.
Here are the pictures which came out ok considering my lack of skill and the close quarters.
I have a feeling the comments on the components will be interesting.

The smaller Bennic caps are 22uF by the way and you can see where the larger ones are 100uF.
Post edited by NJPOLKER on
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Comments

  • Face
    Face Posts: 14,340
    edited March 2010
    SF use 1st order crossovers, which explains the large cap and inductor values. IIRC, they also use impedance correction(zobels?), which is why there is still so many parts.

    The advantages of 1st order filters is that there are very little parts in the signal path, the drivers play over a broad frequency spectrum and that there is better phase tracking.
    "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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  • lightman1
    lightman1 Posts: 10,794
    edited March 2010
    One of the cleanest X-over boards I've ever seen. I'll bet you're plum giddy with excitement still!:D


    Howz the first of May look for ya, Drew?
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  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited March 2010
    If I am still alive it should be great :cool:
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  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited March 2010
    I just noticed I mis-spelled Faber, what a ***** I am. Very embarrassing too.
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  • Face
    Face Posts: 14,340
    edited March 2010
    A little on first order slopes near the end of this page: http://www.troelsgravesen.dk/vocals.htm
    "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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  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited March 2010
    Patrick C is my hero for fixing my mistake, thanks again.

    Face/Mike Thanks for that link. I printed it so when I am in the tub I can study/read it.

    Since the SF's are 1st phase what are speakers like my SRS2's or similar speakers? I know or think from a brief read that its not necessarily a good, better, best situation but am wondering.
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  • Face
    Face Posts: 14,340
    edited March 2010
    SRS 2's have 2nd order filters.
    "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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  • polkatese
    polkatese Posts: 6,767
    edited March 2010
    Interesting and looks great. I am surprised they didn't treat the X/O with Resin like the Amati:

    http://www.hifi-notes.com/sonusfaberamatifabrikage-nl.htm

    I guess they only care for their TOTL X/O.
    I am sorry, I have no opinion on the matter. I am sure you do. So, don't mind me, I just want to talk audio and pie.
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  • Face
    Face Posts: 14,340
    edited March 2010
    You also don't see any electrolytic caps either.

    Wilson and a few other OEM's also pot their crossovers.
    "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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  • dorokusai
    dorokusai Posts: 25,577
    edited March 2010
    OMG they use Bennic caps and borderline industry standard resistors!!!....they must be the most awful loudspeakers ever to the immediately upgrade your xover crew....I'm suprised you haven't been run out of town like Frankenstein.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.
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  • polkatese
    polkatese Posts: 6,767
    edited March 2010
    Know Jacksh*t about Bennic caps, is it really that bad Mark? or you're just being you? :)
    I am sorry, I have no opinion on the matter. I am sure you do. So, don't mind me, I just want to talk audio and pie.
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  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited March 2010
    dorokusai wrote: »
    OMG they use Bennic caps and borderline industry standard resistors!!!....they must be the most awful loudspeakers ever to the immediately upgrade your xover crew....I'm suprised you haven't been run out of town like Frankenstein.

    They sound terrible with those awful Bennic caps!!!!!!!!!! But the speakers look awesome!!!

    It is amazing how wonderful they sound just the way they are. I just wish I had more time on my hands like I did right before I got them. Ever since they arrived I have been going places :D. When I get back from Clemson next Monday I have nothing planned for awhile, thank God.
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  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited March 2010
    Face wrote: »
    You also don't see any electrolytic caps either.

    Wilson and a few other OEM's also pot their crossovers.

    I hope they use good pot :eek:
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  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited March 2010
    anonymouse wrote: »
    They really splurged big bucks on those capacitors:

    http://www.madisound.com/catalog/product_info.php?manufacturers_id=122&products_id=117
    http://www.madisound.com/catalog/product_info.php?manufacturers_id=122&products_id=139

    Its not about the cost though, its how it sounds.



    Those are not the same capacitors but are from the same manufacture.
    The ones in the SF's are Bennic BO3's
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  • zingo
    zingo Posts: 11,258
    edited March 2010
    anonymouse wrote: »
    They really splurged big bucks on those capacitors.

    $2.20 for those Bennic caps is still $2.00 than most manufactures are paying for their no-name caps.
    Jake
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  • NJPOLKER
    NJPOLKER Posts: 3,474
    edited March 2010
    zingo wrote: »
    $2.20 for those Bennic caps is still $2.00 than most manufactures are paying for their no-name caps.

    Fair point but those are not the caps used. I do not know what the Bennic caps sell for that are used in the SF's but they sure sound good, ok great.
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  • hearingimpared
    hearingimpared Posts: 21,136
    edited March 2010
    NJPOLKER wrote: »
    Fair point but those are not the caps used. I do not know what the Bennic caps sell for that are used in the SF's but they sure sound good, ok great.

    That is all that matters Drew.:)
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