3 way loudspeaker

Exclusively for use within the Aurum Acoustics Active 300B active loudspeaker system.

Cabinet:
Asymmetrical shape

  • supplied in mirror-image pairs with distinct Left and Right cabinets
  • front baffle sloped 10 degrees – drivers outputs arrive at the listener simultaneously
  • outer side sloped 8 degrees – enhances aesthetics, enhances rigidity to diminish panel vibration
  • chamfered edges with varying profile around midrange and tweeter – minimize baffle width and baffle diffraction effects

Rigid construction

  • 2" front baffle for solid support of drivers; woofer and mid entries are internally sculpted to eliminate short-path reflections from the driver hole edges
  • steel inserts and cap-screws tightly mounting the drivers
  • 1" thick side panels provide stiffness
  • multiple horizontal and vertical window braces and a solid divider between midrange and woofer add resistance to panel resonance

6mm inserts on bottom panel allow 3 or 4 point support

  • 1" tall brass cones supplied, fit into inserts
  • an available option base kit of 1/2" thick aluminum provides broader 3-point mounting and greatly increased cabinet coupling

Black matte front panel and hardwood veneered on five sides

  • primary veneer option is Italian-produced Honeygold Burl with rich highlighting in a medium brown texture
  • other veneer and finish options may be available - Rosenut shown in photo above

Dimensions and weight

  • height: 1100mm/43.3"
  • footprint: 400mm/15.75" wide x 445mm/17.5" deep
  • top: 240mm/9.45" wide x 211mm/8.3" deep
  • approximately 45kgs / 100 lbs


Drive units:

  • Tweeter – Seas Excel, 1" treated fabric dome (Sonotex), ferrofluidless
  • Midrange – B&C Components, 6" treated paper low mass cone, phase plug, powerful motor, and flat surround
  • Woofer – Seas, 10” treated paper low mass cone, substantial motor


Internal Cabling and Connectors:
Same as external cables

  •  mid and high - Cardas SE 15AWG golden ratio, concentric, asymmetrical, coaxial, constant Q, crossfield, pure copper litz conductors
  •  low – Cardas 8AWG twisted-quad, golden ratio, constant Q, crossfield, pure copper litz

Neutrik XLR 4-pin receptacles for mid / high

  • Cardas Patented Binding Posts for low frequency output


Enclosure Volume / Alignment:

  • Midrange – 15 liters, sealed, critically damped
  • Woofer – 50 liters, sealed, critically damped


Acoustic Crossover Functions:
When used with the Integris Active 300B amplifier system

  • mid to tweeter – 2000Hz, fourth-order Linkwitz-Riley
  •  mid to woofer – 375Hz, fourth-order Linkwitz-Riley


System Frequency Response:
When used with the Integris Active 300B amplifier system

  • onaxis: +/- 1.5dB from 40Hz-20kHz
  • offaxis: trending evenly downward with increasing frequency; typically +/- 1.5dB at any horizontal angle
  • LF extension: -3dB at 30Hz / -6dB at 24Hz / -10dB at 20Hz

Optimized for typical room gain matching to provide full and accurate perceived extension