Quote:
Originally Posted by
zorg43x /t/1454077/jbl-m2-master-reference-monitor#post_22920878
sorry my fault, i'm looking at the different wg too right now
maybe it's not in scope of this thread but I'd be interested why it shouldn't be put otherwise: why the active solution should beat a decent passive xo.
to level the different sensitivity (simplified
you put a resistor to the HF section, it's common not only in consumer solutions though. you can build almost any RLC passive filter. in my eyes the only advantage of the active crossing is that you can choose a power amp to each section and you have no additional coils etc. in the LF section, which would eat some power.
...and you could fine tune it to the specific room environment in which it was installed without fighting the passive crossover's preset compromises, and you could create saved presets for changing physical configurations and set ups in the studio, and you could program the entire thing as an "aware" system using the JBL-recommended electronics.
This is an interesting inversion of practice in which the high end consumer side of Harman is bleeding into the pro side.
Harman Luxury Audio Group: JBL Synthesis: The SDEC units (rebranded BSS units) know the processor, the amps, the speakers (and individual drivers) in the system to a "T" since they're system-specific and all the relevant data is profiled in memory. Then during calibration the SDECs "know' the room and its characteristics and the room itself becomes part of the system. Crossovers, slopes, PEQ, response curves are all tailored to that environment.
JBL Pro: M2 Master Reference Monitor: the I-Tech or BSS units know the amps (or are part of the amps), the speakers (and individual drivers) in the system to a "T" since they're system-specific and the relevant data is profiled in memory. Then during calibration the BSS Blus "know" the room and its characteristics (additional compounded by speaker placement: soffit, against a wall, freestanding) and the room itself becomes part of the system. Crossovers, slopes, PEQ, response curves are all tailored to that environment, and presets can be stored for environmental changes, such as in a project studio where there may be two or three room arrangements depending on number of musicians, instrument deployment, etc.
Can't do any of that with a passive xo.
Of course, the proof, after all the measuring, is in the listening.
http://www.sonicscoop.com/2013/01/25/jbl-professional-debuts-m2-master-reference-monitor/