Glad to hear that you like it! I really tried to capture the "good" distortion from the analogue gear and tape saturation (... simulated tape, though, to avoid unwanted noise).
The reverb you get for these processed samples is derived from impulse responses we caputured during the early development stage of legacy Vienna MIR. They were applied "by hand", one by one, because a fully functional MIR engine didn't exist yet, back then. 8-P
... the Vienna Instruments' Library Manual for percussion instruments covers all of this on p.11:
@Another User said:
80 Processed Percussion
The processed percussions are a mixdown-ready set of selected samples from the Vienna Symphonic Library. Our goal was to achieve authentic acoustic depth and imaging from these instruments – as if they were recorded while being played in the back of the stage in a world-class orchestral hall, carefully treated by experienced engineers.
World class analog and digital equipment was used throughout: Dynamic processors from API, Manley, Urei, SPL and SSL, equalizers and filters from Massenburg, Avalon, Tube-Tec and Calrec, routed and mixed through the large-scale Neve VR console at Tonstudio Hafner near Vienna. The digital audio workstation which handled the complex routing was Steinberg's Nuendo 3, equipped with RME digital cards and Lake People AD/DA converters, Algorithmix equalizers and others, as well as additional custom designed software for impulse response processing.
The virtual stage on which you now can put these pre-processed instruments is the sought-after Great Hall of the Vienna Konzerthaus. The microphone is placed in a position which is supposed to be one of the ideal listening positions in this auditory – a seat in the 7th row, approximately. The positioning cues for each instrument plus the resulting reverb are derived from selected impulse responses from the Vienna Symphonic Library's "MIR" project. [...]
Although pre-processed, these instruments still offer a considerable amount of artistic freedom: The relation between the direct ("dry") signal and the resulting reflections and reverb may be chosen with a turn of the modulation wheel. However, you should be aware that "full wet" means the absence of any direct signal, something that is not very likely to happen in nature. Nevertheless, in this way you will be able to bring an instrument closer to the listener if your arrangement asks for it.
Also, you’ll still be able to choose the side on which an instrument is seated: just swap the sides of the left and right channels within your mixing application. Although not true to nature anymore, the result will be convincing and mix perfectly with the other pre-processed percussion instruments.