In the OPERA GRANDEZZA is implemented, additional to the 30mm Diamaond tweeter from Accuton, the 90mm Diamond midrange driver. 

Opera Test

„Was man hier an Fein-wie Grobdynamik hören kann, welche Präzision und Detailfülle, das ist fraglos State Of The Art.“

Zum Bericht: lowbeats (hier klicken)

Holger Biermann

LowBeats 10/22


The components of the crossover consist of extremely high-quality mica capacitors and film capacitors from Duelund, Intertechnik, Mundorf and BMC.

The entire internal wiring from the pole terminals to the switch as well as to all chassis consists of solid pure silver conductors with GORE dielectric made of extruded Teflon.

For the highest demands, the tweeter has a 30mm diamond dome, the capacitor for the tweeter is made of solid pure silver foil with pure silver connections, the cables in the tweeter range consist of a silver-gold solid conductor.


In addition to the 30 mm diamond tweeter, the midrange diaphragm is also made of pure diamond. It is the world’s largest diamond midrange driver with its 90 mm diaphragm made of pure industrial diamond, also from Accuton. AudiaZ is currently the only German manufacturer to use this state-of-the-art loudspeaker.

Specification Opera Grandezza:

Set up3 way, Bassreflex
Drive unitstweeter 30 mm diamondmembrane

midrange 90mm diamondmembrane

Bass 2x 220 mm ceramic membrane
Sensitivity89,5 dB/W/m
Frequence Response22 Hz to 40 kHz
Input Impedance6 Ohm
Recommended ampfrom 50 Watt Class A
Binding postsWBT Polklemmen 0710AG
Dimensionswidth 284mm

hight 1257 mm

depth 284 mm
Weight56 kg
Designpearlgloss black, pearlgloss white,
golden ebony highgloss