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Resolution 1.5

Full range and no compression driver


  • Very low distortion
  • Wide dispersion
  • Funktion One designed Neodymium drivers
  • Integral 35mm pole mount
  • Optional full grill for discrete appearance
  • Optional Passive Crossover Module (PX1.5)



Operating Band


(1W at 1m)





18" 55 - 595Hz 102dB 400W 8**
5" 520Hz - up 112dB 75W 12**

*AES rated

** 8 Nominal Total Impedance when run passively

Go to crossover settings

Frequency Response ± 3dB: 55Hz - 15kHz
Weight: 29kg (64lbs)
Nominal Dispersion: 90° Horizontal x 25° Vertical
Connectors: 2 x Speakon NL4


Building on the success of our innovative R1, the Resolution 1.5 is a 2-way loudspeaker enclosure with 90 degree dispersion, high-fidelity and good low frequency output for its size. Our unique axhead loaded 5” cone loudspeaker is combined with a substantial 18” bass driver to present a highly capable two way enclo-sure. In common with the Resolution 1, the 5” eliminates the need for compression drivers with their inher-ent harshness and distortion. The 5” driver’s ability to operate cleanly down to a low crossover point of 590 Hz allows the transition to the bass driver to be of exceptional smoothness. Furthermore, our bass loading technology enables use of an 18” driver in an enclosure size where previously only a 15” loudspeaker could have been used. As usual with Funktion One there is no system EQ and the resulting sound is extremely involving. It is well suited to applications needing a single enclosure per side including theatres, entertain-ment venues and worship spaces.

Technical Drawings:

Resolution 1.5 Technical Drawing
All dimensions in mm and inches © Copyright Funktion One Research Ltd 2008 - 2024

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