What a microphone!
Dynamic (moving coil) mics are really underestimated. And omnidirectional ones have something so natural...(Simplicity bringing excellence).
Setup: (the symbol "-" means connected to...)
D130 - Pleiades (in line XLR) filter - Step up transformer (in line XLR) - Pleiades V4 (1 stage EF183 battery powered pre preamplifier) - Realistic Disco Mixer (mic in) - Sennheiser HD580 headphones
Not so much low cut was needed as omnidirectional mics do not have a proximity effect.
Nevertheless a Pleiades filter of 100 to 250Hz did a great job of restoring presence in voice (Fletcher Manson and voice effort curves) with the added advantage of removing the muddy room acoustics and annoying background noise.
So the inductance connected in parallel to the mic out was of the order of 210mH to 140mH. These were measured with a digital Escort ELC-120 L meter by measuring pins 2 and 3 after disconnecting the mic. The reading taken is the parallel combination of the Pleiades filter and the primary inductance of the transformer used. Interesting combination is a Canford impedance converter (400mH) in parallel with a Pleiades filter of 200Hz (166mH). Other natural combination was a 200mH primary inductance step up transformer and a Pleiades filter of 100Hz (333mH).
So the inductance connected in parallel to the mic out was of the order of 210mH to 140mH. These were measured with a digital Escort ELC-120 L meter by measuring pins 2 and 3 after disconnecting the mic. The reading taken is the parallel combination of the Pleiades filter and the primary inductance of the transformer used. Interesting combination is a Canford impedance converter (400mH) in parallel with a Pleiades filter of 200Hz (166mH). Other natural combination was a 200mH primary inductance step up transformer and a Pleiades filter of 100Hz (333mH).
Bravo to AKG
One of the best microphones ever made.
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