Shure SM99 18-Inch Gooseneck Microphone

Shure SM99 18-Inch Gooseneck Microphone

The SM99 is a miniature gooseneck-mounted condenser microphone (electret bias) designed primarily for mounting on a lectern, pulpit, or conference table. Its wide frequency response, supercardioid pickup pattern, and two-stage pop filter make it especially suitable for speech or vocal pickup. The SM99 can also be used to pick up various musical instruments. The microphone is available with three different gooseneck lengths to suit the widest variety of applications.

Features:

• Smooth wide response for accurate sound reproduction across the entire audio spectrum
• Symmetrical supercardioid pattern, uniform with frequency out to 20 kHz, maximizes gain before feed-back, minimizes need for isolation when picking up single instruments out of a group
• Fixed 12 dB/octave rolloff below 100 Hz to minimize pickup of low-frequency noise and vibration
• Low distortion and wide dynamic range
• Phantom (simplex) powered, accepts wide range of phantom voltages, from 5 to 52 Vdc
• Low susceptibility to RFI, electrostatic and electro-magnetic hum
• Usable over very wide range of temperature and humidity
• Can be permanently mounted on lectern or podium, attached to surface-mounted standard XLR-type receptacle, or stand-mounted using A25C Flex-mount or A57E swivel adapter
• Gooseneck in SM99-12 and SM99-18 designed with rigid central length to preserve neat appearance even after repeated adjustments; flexing occurs only in sections at each end (73 mm
• 2-7/8 in. at top and bottom)

Specifications:

• Type: Supercardioid condenser (electret bias)
• Frequency Response: 80 to 20,000 Hz
• Polar Pattern: Supercardioid (unidirectional), uniform with frequency, symmetrical about axis
• Output Impedance:
  • Rated at 150 n (90 n actual)
  • Recommended minimum load impedance: 800 Q
  • (May be used with loads as low as 150 n with reduced clipping level)
• Output Level (at 1,000 Hz):
  • Open Circuit Voltage: -73.0 dB (0.22 mV) 0 dB= 1 V/µbar
• Preamplifier Output Clipping Level (at 1, 000 Hz):
  • 800 Q load: -18 dBV (0.13 V)
  • 150 Q load: -29 dBV (0.036 V)
• Maximum SPL (at 1,000 Hz, less than 1 % THD):
  • 800 Q load: 130 dB
  • 150 Q load: 122 dB
• Hum Pickup (maximum): + 1 O dB equivalent SPL in 1 mOe field
• Output Noise:
  • 30 dB SPL A-weighted
  • 32 dB SPL weighted per DIN 45 405
• Signal-to-Noise Ratio: 64 dB re 94 dB SPL
• Dynamic Range: 100 dB
• Phasing: Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output connector
• Power: 5 to 52 Vdc Phantom (simplex) voltage, 0.33 mA cur-rent drain
• Case:
  • Microphone, gooseneck, preamplifier housing, and mounting flange: matte black enamel finished
  • Microphone case: brass with stainless steel inner grille
  • Gooseneck and preamplifier housing: steel
  • Mounting flange: aluminum
• Environmental Conditions:
  • Operating Temperature: -18 to 57° C (0 to 135° F)
  • Storage Temperature: -28 to 74° C (-20 to 168° F)
  • Relative Humidity: 0 to 95%
• Net Weight:
  • Gooseneck microphone assembly:
    • SM99-6: 123 g (4.3 oz)
    • SM99-12: 165 g (5.8 oz)
    • SM99-18: 207 g (7 .3 oz
    • Mounting flange: 38.4 g (1.35 oz)