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731R Dual Short Ribbon Microphone

Hand-tuned dual ribbon element motor with the legendary symmetrical ribbon design

731R731R

731R Retro - Old School Style Ribbon Microphone

Similar to the ribbon design that was used in the legendary RCA Type 44-BX

Unlike most ribbon motors designed today with an offset ribbon element the new Cascade 731R houses a hand-tuned dual ribbon element motor that incorporates the legendary symmetrical ribbon design. This design offers a true figure 8 pattern. The corrugated aluminum membrane itself is positioned in the center from front to back, thus producing a balanced audio input signal to both sides of the ribbon assembly. This design is very useful when executing a mid-side or Blumlein recording set-up and also great for live stage use.


Cascade 731R Back

731R shown with upgraded Custom Mogami NEGLEX 2534 Quad Microphone Cable with right angle Switchcraft XLR Connectors.

Cascade Microphones 731R

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Specifications:

  • Type: Ribbon (velocity) Microphone
  • Ribbon type & Dimensions: 99% Pure aluminum, 2.5 micron.
  • Polar pattern: Figure 8 Symmetrical design
  • Sensitivity: -57.1 db (1.4 mV/Pa)
  • Frequency response: 30 -15 kHz (+/- 3dB)
  • Output Impedance: <=200 Ohms
  • Recommended load impedance: >1000 Ohms
  • Max.SPL (1% THD @1000 Hz): 165 dB
  • Equivalent noise level to IEC 651 (a weighted): 17dB
  • S/N ratio re 1Pa: 70dB
  • Connector: Removable right angle 3-Pin male XLR

Includes:

  • 731R Ribbon Microphone
  • Aluminum case
  • Deluxe oil stained wood box
  • Premium mounting yoke
  • 30ft. right angle 3-pin XLR
  • Micro-fiber cleaning cloth
  • Specifications and typical measurement report

Frequency Response and Polar Pattern:

With Stock Transformer

Quality aspects of the Lundahl


Alternate Images


Upgrade Transformer Options

Optional Lundahl transformer available

Click on image for detailed information

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