Shure SM98

Type: Cardioid condenser (electret bias)
Frequency Response: 40 to 20,000 Hz
Output Impedance

• Rated at 150 ohms (90 ohms actual)
• Recommended minimum load impedance: 800 ohms
• (May be used with loads as low as 150 ohms with reduced clipping level)

Output Level (at 1,000 Hz)

• Open Circuit Voltage . . . . . . . . . . . . . -80.0 dB (0.10 mV)

Preamplifier Output Clipping Level (at 1,000 Hz, less than 0.1% THD):

• 800 ohm load . . . . . . . . . . . . . . . . . . . . . . . . . 0 dBV (1.0V)
• 150 ohm load . . . . . . . . . . . . . . . . . . . . . . -13 dBV (0.22V)

Maximum SPL (at 1,000 Hz)

• 800 ohm load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 dB
• 150 ohm load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145 dB

Hum Pickup: -5 dB equivalent SPL in 1 m0e field (60 Hz)
Output Noise

• 34 dB SPL, A-weighted
• 37 dB SPL, weighted per DIN 45 405

Signal-to-Noise Ratio: 64 dB re 94 dB SPL
Dynamic Range: 121 dB
Phasing: Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of preamplifier output
connector
Power:

• Battery: Two 9-Vdc alkaline (NEMA 1604A), approximately 300 hours continuous with fresh alkaline batteries
• Simplex (Phantom) Voltage: 11 to 52 Vdc, operational down to 9 Vdc; 1.8 mA current drain; permissible to use simplex power with batteries in place or removed

Environmental Conditions

• Operating Temperature: -18° to 57° C
• Storage Temperature: -29° to 74° C
• Relative Humidity (Operating or Storage): 0 to 95%

Dimensions: 150 x 70 mm
Net Weight

• Microphone: 12 grams less cable
• Preamplifier: 435 grams less batteries