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  1. #1
    AR Newbie Registered Member
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    Reference 3A Royal Master

    Hi everybody, I have pair of . They sounds wonderful. When I glanced inside, I saw that high frequency speaker is connect through Mundorf Supreme 4,7 uF capacitor, but there is one more , very cheap chinese capacitor 3,3 uF. Does somebody know, why here connect two capacitors? Maybe somebody have these speakers or a scheme how must be connect the high frequency speakers in theese monitors?
    Reference 3A Royal Master-p1030707.jpgReference 3A Royal Master-p1030714.jpgReference 3A Royal Master-p1030743.jpg

  2. #2
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    The work doesn't look very clean. I may be a modification made by the last owner. Did you buy them new? Is this the entire crossover, it looks pretty simple?

  3. #3
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    I found an article about these by Jonathon Skull. In it he states "Importer Goldstein gleefully described a minimalist single capacitor and three resistors that make up the crossover for the tweeter." I didn't see any resistors in your picture. The previous owner may have been adjusting the tweeter to his own taste. If they're "wonderful " now, I wonder what they sounded like before.

  4. #4
    AR Newbie Registered Member
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    Yes, Stereophile magazine, for example, describe Royal Master :
    Crossover: impedance-compensated slow-rate–type high-pass, –3dB at 3kHz; no low-pass, the woofer/midrange rolls off naturally from 3kHz to 10kHz at 6dB/octave...
    Importer Goldstein gleefully described a minimalist single capacitor and three resistors that make up the crossover for the tweeter.
    Another site describe crossover like:
    The crossover contains special a Musicap capacitor which assures a smooth decline of the characteristics from 3 kHz upwards (-3dB, then 6 dB per octave) and proper impedance corrections. I don't know must be there 1-st order filter, only capacitor? If yes it must be about 8.8 uF for cutoff at 3000 Hz, if second order - about 4,7 uF?

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