Mic Archive
Shure SM89
Photo: Shure, from its user guide, p. 1.

Shure

Shure SM89

Condenser shotgun mic (pressure gradient/line combination) for film, TV and theatre, phantom powered, with a two-position low-cut switch

Type
Condenser
Pattern
Hypercardioid / lobar
Sensitivity
−33 dBV/Pa
Self-noise
16 dB(A)
Max SPL
127 dB SPL
Impedance
150 Ω
Rated range
60 – 20k Hz

Frequency response

Angle
Distance

Frequency response: from the user guide, p. 1. "TYPICAL ON-AXIS FREQUENCY RESPONSE", "*Curves shown at 1.8m (6 ft)"; relative dB. Room and smoothing not stated.

Dashed: outside the rated range, or simulated (other angles and distances). Hover or tap the graphs for values.

Polar pattern

Polar pattern: from the user guide, p. 2. "TYPICAL POLAR PATTERNS", "Curves shown at 1.8m (6 ft)"; two circles (250 Hz to 1 kHz, 2500 to 10000 Hz), 0° at the bottom, 5 dB per ring.

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All specs

From the user guide
Capsulepressure gradient/line combination (interference tube). "Type: Pressure gradient/line combination".p. 1
Sensitivity−33 dBV/Pa (22.2 mV/Pa), 1 kHz, open circuit voltage. "–33 dBV/Pa (22.2 mV)".p. 2
Self-noise16 dB(A), output noise, equivalent SPL, typical, A-weighted. "Output Noise: 16 dB SPL typical, A-weighted".
Max SPL127 dB SPL, 1 kHz, under 0.5% THD, 800 ohm load; also 119 dB SPL, 150 ohm load
Signal-to-noise ratio79 dB, re 94 dB SPL
Dynamic range111 dB
Output impedance150 ohm, rated; 100 ohm actual. "Rated at 150 Ω (100 Ω actual)".
Rated load impedance800 ohm, recommended minimum; usable down to 150 ohm with reduced clipping level
Rated frequency range60 Hz to 20 kHz, curves shown at 1.8 m (6 ft)p. 1
Poweringphantom, 11-52 V DCp. 2
Current draw2 mA. "2 mA current drain".
Low cut60 Hz, 160 Hz; 15 dB/octave; recessed switch. "Recessed low-cut filter switch, 15 dB/octave cut below 60 Hz(—) or 160 Hz". There is no flat position.
Weight195 g, net. "195 grams (6.9 oz)".
Dimensions524 × 20 mm. Overall dimensions: length 524 mm (20-5/8 in.), 20 mm (25/32 in.) diameter; the head (to the joint with the handle) is 386 mm (15-3/16 in.) long.
Finishsatin black. "Satin-black vinyl painted aluminum alloy handle and grille with stainless steel screen".
Supplied accessories90A4684 carrying case; RK257WS foam windscreenp. 3
Output clipping level–1 dBV (0.89 V) into 800 ohm; –12 dBV (0.25 V) into 150 ohm (1 kHz, under 0.5% THD)p. 2
Hum pickupUnder 3 dB equivalent SPL in 1 mOe field (60 Hz)
PhasingPositive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3
ElectronicsFET impedance converter, class A compound amplifier, balanced transformer output, RF filter (block diagram)
CaseSatin-black vinyl painted aluminium alloy handle and grille with stainless steel screen; the handle unscrews from the head (gold-plated contacts)
Environmental conditionsOperating –29 to 57 °C, 0 to 95% RH; storage –29 to 74 °C, up to 80% RH at 74 °C
Optional accessoriesA89SM shock mount; A57F swivel adapterp. 3
Replacement partsR144 head assembly; 90A3123 handle assembly; 90A3127 RFI filter and plug element
Off-axis use (Shure)Smooth 30° off-axis response with little comb filtering: a source up to 30° off axis can be restored with simple high-frequency equalisation

Documents

Copies kept by Mic Archive, because manufacturers move and drop their documents. Each is © Shure, unchanged, with its original address.

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