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The Power and The Horror
Something of anomaly the XLS DriveCore technology in a Class D
configuration, it goes beyond difficult loads -- At a 2-ohm SPKR load it runs from 550-1200W over the course of four models within the same series nomenclature. (Bridged would be 1100-2400W at 4-ohm.) I'm running a modern 4-ohm at 350Watts, although, practically very much so, as the monitors are intended for 120Watts ("bookshelf" convention of medium dimensions). Although I do have 8-ohm larger, branded entry-bookshelves monitors, at 215-440W, that I can handle at this model's 215W rating;- I prefer pairing the 4-ohm monitors for the time being. (My vintage amp, though capable of 4ohms, was not of conventions at that time generally accorded 8ohm speakers.) Also, in the Class-D amp's CMOS, is the provision for pro or consumer input impedance -- .775Vrms or 1.4Vrms, i.e. Sensitivity (at a default "factory reset" to 1.4rms). I switched it to .775Vrms after reading some hundred more reviews, than at the time I bought mine, since added. I also turned on the amp's PWR MTRs, previously off due to a redundancy of a MIXER's final out LEDs, as well a direct parallel connection to output terminals, I have in the form of a power meter, switchable between a specificity of 2- to 200-Watts (spurious PEAK). My player, FOOBAR, I've lowered to a base reference, within an "envelope" iZotope Ozone 5 Advanced VST module: Portrayed for two polar quadrants, depicted over a semicircle, within containing an adjustable stereo signal and dispersion characteristics. It's a form of gain limiting, where signals that approach, driven by PWR to intersect an upper circular ellipse, can be defined for compression or hard-limiting. I've lowered the input to a greater certainty not to exceed an overall, and consequence, of dynamics present between "soft or loud" passages. An end result, either at .775Vrms or 1.4Vrms input staging, is that FOOBAR, an audio player, is effectively pegged within a first of four or five amp LEDs (three, with probably a yellow caution to another red clipping condition). Whereas a discernable and resultant volume at near parity, when played through an (sic) intended VID player, the Korean DUAM/POTPLAYER, displays at that same first PWR register LED, a normal indicative of flashing corresponding to significance in signal PWR fluxes. Of course, to be sure, there are quiet ranges (-60DB) within the music no less FOOBAR reproduces, yet while that LED never deviates, to always say lit, would seem to elude its purpose. And there are no noise issues involved, at least that I can discern. (Reference: two DAC to analogue converters, split two ways off the soundboard, as well the soundboard DAC unit, provide MIXER inputs;- MIXER outputs pathed to two (dual tube) buffer [pre]amplifiers, directly before a two-amp input array. (One DAC is modulated from LIMITER/COMPRESSOR unit output to the MIXER, whereas the other DAC is not: Both DAC units, neither contain the same receiver DAC unit chip brandbane.) |
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