PAULA speaker

available in kit - cabinet not icluded

 

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Since Nov 7 2004

Paula is a 2 ways bass reflex loudspeaker system fully designed, hand crafted, and manufactured in Italy by Royla Device with optimum design and finishing with very compact size in respect to the low end frequency response and efficiency. The design suits for a very simple in-house placement .The 8 1/2" woofer has been especially custom made by Royal Device  for the Laura and Diana Royal Device loudspeaker systems. The woofer has a mean sensitivity of 98.5 dB together with very high velocity, dynamic response and an extremely extended low frequency response due to the woofer very low resonating frequency and back horn loading system. The new MIRANDA 120 mm constant directivity HORNs  is a perfect complement to it. The horn is completely a Royal Device custom design product that loads a soft dome SEAS tweeter. This reproduces full 2– 20 KHz bandwidth with 99 dB efficiency together with an optimum flat response without using a frontal phaser. The choice of no crossover on the woofer together with a new frontal WF mechanical alignment (MKII) and the Royal Device  custom technology for  woofer high break-up reduction gives a perfect  matching to the HI-HORN  towards WF decay using a 24 dB slope HI-HORN filter in a phase coherent manner .  Woofer bandwidth rise up to 9.5 KHz @- 6 dB, for a full audio band direct radiation with no "midrange horn compression nasality".  All components used are first class as the new generation Royal Device AudioCap PPFF custom made capacitors.
  •  N. 1 - 21 cm (8 ½ inches) woofer with high quality low weight paper cone on aluminum die-casting with central phase mechanical filtering for no crossover implementation
  • Woofer type of loading: bass reflex

     

  • Woofer crossover type: No crossover. Woofer is provided with a custom Royal Device technology to highly reduce high break up

     

  • features the NEW Royal Device  (12 cm  - 4 ½" ) Constant directivity MIRANDA HORN fully hand-crafted in one piece solid wood. Horn uses a ¾" soft dome SEAS tweeter without frontal phase alignment as driver.
  • HI-Horn filter type: 24 dB/octave slope phase coherent filter to woofer decay
  • Hi-Horn acoustic cross: 9 KHz variable depending on mechanical phase alignment custom adjustable.
  • Easy mechanical phase alignment between Woofer & Hi-horn, depending on listening height position

     

  • Mean Sensitivity: 98.5 dB / 2.83 Volt / 1 meter (101 dB "A" weighted).
  • Frequency response: 30 - 20,000 Hz
  • Nominal impedance: 6 ohm
  • Minimum impedance: 4.5 ohms at 200
  • Power handling: to be connected to amplifiers up to 50 Watt rms. per channel. There is no need to use more than 15 Watts per channel for indoor use with a NO F.B. triode tube amps.
  • Minimum power suggested:
    • 0,5 Watt per channel with the use of RD BI-WIRING CABLE and NO-NEGATIVE FEEDBACK low power TUBE triode amplifier
    • Not suited to any Feed Back amplifier (read the reasons)

     

  • Suggested Amp: S.E. Class A Monotriode, completely no F.B. with 6 ohm nominal output transformer (8 ohms typical) with a rated power output of 2 to 8 Watts / channel or Royal Device amplifiers.
  • Golden connectors for BI-amp or BI-wiring ( RD BI-WIRING CABLE suggested

     

  • Weight: 23.5 kg each - Dimensions: 1000 (height) x 260 (Width) x 400 (Depth) mm
 

VERTICAL VIEW

STANDARD HORN POSITION

FIG. 1 - Ear height alingned to horn center line.

Horn aligned on the top label center line. Medium distance considered from speaker 3.5 meters ( 10.5  feet).  More away the listening point is less the phase correction will be needed.

FIG.2 - Ear height higher than  horn center line.

Horn POSITION has to be moved back. The amount of movement depends on the speaker to ear distance and on the ear to ground height

FIG.3 - Ear height lower than  horn center line.

Horn position has to be moved forward. The amount of movement depends on the speaker to ear distance and on the ear to ground height
 

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