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Mods for the RSM-8A

  • Open Plan RecordingOpen Plan Recording
    Mark Chierego’s mod features a single layer headbasket, removal of waffle plates and various acoustic filters, point to point solid core wiring, Australian made ribbons (1.8 micron 99.9% pure aluminium), matched with either a Samar Audio Design toroidal transformers or the Lundahl 2912.

BidirectionalNady RSM-8A

Bidirectional Active Ribbon Microphone

The RSM-8A is a large-geometry Chinese-made ribbon mic in the style of Nady’s RSM-2, but with a phantom-powered preamp circuit built into the mic body — as well as a switched -10dB pad (on a ribbon!) and HPF.

THe 50mm long ribbon qualifies this mic as a long ribbon, short path ribbon architecture.

The Nady RSM-8A is also known as: RSM8, RSM-8, RSM8A.

The mic was released in 2008.

Specifications

Pickup Patterns Pads & Filters
Bidirectional
  • Pad: -10dB (Via Switch)
  • Filter: HPF: -12dB/oct @ 100Hz (Via Switch)
Ribbon Construction Impedance SPL/Noise
50mm long, 2-micron aluminum ribbon 200 Ohms (Low) Max SPL: 140 dB
Self-noise: 17.0 dB(A)
Weight Length Max Diameter Interface(s)
816g (28.78oz) 185mm (7.28'') 69mm (2.72'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 48v

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