MK224

   Frequency Response: 8 Hz to 20 kHz
   Sensitivity: 50mV/Pa (-26dBV/Pa)
   Dynamic Range: 12dBA to 144dBSPL
   Diaphragm: Quartz Coated Nickel
   Temperature Coefficient: 0.01 dB/C
   Mounting Thread: 11.7mm 60UNS2

7052E

   Frequency Response: +/-2 dB 3 Hz to 20 kHz
   Sensitivity: -29 dBV/Pa  35 mV/Pa
   Dynamic Range: <20 dBA to >150 dBSPL
   Cartridge Capacitance: 18 pF
   Polarization Voltage: Prepolarized Back Electret
   Temperature Coefficient (-10 to +50C) : .01 dB/C
   Influence of Humidity: 55C/95% +/-0.1 dB
   Longterm Stability: >250 years/dB 

Mechanical for 7052E:

   Height of Cartridge: w/ grid 13 mm
                                w/o grid 12 mm
   Diameter of Cartridge: w/ grid 13.2 mm
                                    w/o grid 12.7 mm
   Grid Thread: 11.7 mm 60UNS2
   Preamp Thread: 11.7 mm 60UNS2

Suggested Preamps:
   4012E
   4212
   4052