Tuesday, September 13, 2016

Sennheiser MD21 HL and Pleiades filters


This fabulous microphone was connected with various Pleiades filters.


(Later addition: see also Pleiades R,L filters of much gentler or variable bass cut or high pass slope).


The most natural singing male voice (compensating for the voice effort effect and other bass increasing effects) was with a Pleiades filter of 85mH parallel inductance. The microphone was used at a distance of 1-2in from mouth and a tilt off axis of 45 degrees to reduce the pressure doubling effect.


This inductor was made by winding 200 turns on the black grey Siemens Epcos ferrite core and fitted inside a male to female XLR adapter.


Excellent sound, amazing and loud was also obtained with Pleiades V5.


Setup:


MD21 HL (low) - Pleiades 85mH - Pleiades V4 - realistic disco mixer - HD 580


or


MD21 HL (low) - Pleiades V5 - realistic disco mixer - HD 580     (more input transformer primary inductance may be needed for this omnidirectional microphone as on the V5 it is 47mH)


The Sennheiser MD21 HL is one of the greatest microphones on the planet



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