LSR6332 Linear Spatial Reference Studio Monitor System
HF Adjustment Flat and -1 dB Settings
The impedance compensated crossover filters are opti- mized to yield 4th-order (24 dB/octave) Linkwitz-Riley electroacoustic responses from each transducer (in-phase, -6 dB at crossover). In order to achieve optimal symmetri- cal response in the vertical plane, both magnitude and phase compensation are implemented in the dividing net- work. The network allows the user to attenuate the high frequency level above 3 kHz by 1 dB. This adjusts for spectral balance when used in bright rooms. Components used in the network are exclusively low-loss metal film capacitors, low distortion electrolytic capacitors, high-Q high saturation current inductors and high current sand- cast power resistors.t
Linear Spatial Response Measurement Techniques
We all know that many loudspeakers have similar mea- surements but sound different. By going beyond simple on-axis frequency response measurements, JBL defines the ultimate performance specification for new systems – what it will sound like in your room.
While other manufacturers use a single on-axis frequen- cy response measurement taken at one point in space, JBL measures monitor systems over a sphere that encompasses all power radiated into the listening room – in every direction. This data reflects 1296 times the information of a single on-axis response curve. Seventy-two measure-
ments of the direct sound field, the reflected sound field, and the reverberant field, the entire sound field heard by the listener, is correlated to optimize response at the lis- tening position. In place of spectral smoothing used by some manufacturers which actually conceals data, the JBL approach actually exposes flaws in systems, such as reso- nances, poor dispersion and other causes of off-axis col- oration.
The data shown below is a set of spatially measured graphs that are the heart of JBL’s philosophy.
LSR6332 Response Curves
1. On-Axis Response
2. Spatially Averaged Response over a range of +/- 30° Horizontal & +/- 15° Vertical
3. First Reflection Sound Power
4. Total Radiated Sound Power
5. DI of On-Axis Response
6. DI of First Reflections
