QRP40/90 - large full-range point source column

  • Point-source column with high-Q directivity for increased projection control
  • RBN1203 pro-ribbon HF driver with exceptional intelligibility and “throw”
  • 1:1 non-compressed linear sound reproduction, with up to 90% less distortion
  • Fully symmetric and coherent horizontal and vertical pattern control
  • Woofers with Active Coil™ technology for further reduced LMF distortion
  • Shallow form factor and ACO™ color option for unobtrusive deployment

Product description

The QRP40/90 is a 2-way column loudspeaker to be used as vertical sound system, for both permanent and portable applications. Its slim design packs a perfectly natural, dynamic sound reproduction with superb intelligibility, coverage and throw.

It is specifically designed for applications where ultimate fidelity response needs to be projected with wide horizontal and narrow vertical coverage, ideal in acoustically challenging environments, or applications where intelligibility-over-distance is required.

Loaded with the RBN1203 12” / 30cm pro-ribbon driver on a “Morpher” lens, the system offers an exceptional, SPL-independent throw-efficiency and projection control, due to the pro-ribbon’s all-natural cylindrical (isophasic) wavefront. The patented horizontal dispersion offers a wide and consistent audience coverage up to the highest frequencies.

Its fast impulse response, “compression-less” principle and unusual high peak power handling (2000W @ 200ms) cater for a perfect intelligibility from the lowest to the highest SPL with a 1:15 dynamic range, while offering a maximum “gain-before-feedback”.

The RBN1203 driver is mounted in a co-axial speaker configuration with eight woofers in a sealed cabinet. The custom-design 5” woofers feature Active Coil™ technology for extremely low-distortion LF reproduction, a perfect match with the MHF pro-ribbon technology. The acoustic length assists the QRP40 in an extended vertical projection control in the low-mid frequency range, at the same time enabling a smooth but powerful roll-off to additional subwoofers.

The frequency response roll-off enables an excellent partnering with an additional subwoofer, like the QB242.

Dimensional drawing

Technical specifications

Frequency response 71 Hz - 20.000 Hz (+/- 3 dB)
62 Hz                      (+/- 10 dB)
Sensitivity nominal 103 dB (200 Hz - 10 kHz)
4 ohms 
Recommended drive Sentinel3 min.
Nominal SPL peak 131 dB (Sentinel3 200 Hz - 10 kHz)
136 dB (Sentinel10 200 Hz - 10 kHz)
Dispersion H x V 90° x 20° (@ 20 kHz)

Physical specifications

System 2-way, full-range
Filtering passive
Driver LF 8x AMB5NDAIC-16 5”, sealed
Driver HF 1x RBN1203 12” pro-ribbon driver
Connectors 2x Speakon NL4 input/link
Physical dimensions  mm                 inches
Height 1118                   44.0
Width 161                       6.3
Depth 236                      9.3
Weight (approx.) 22 kg                48.5 lb
Warranty 6 years limited

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