Mic Archive
Shure SM48
Photo: Shure, from its spec sheet (Recording Hacks copy), p. 1.

Shure

Shure SM48

Dynamic (moving coil) cardioid handheld vocal mic; the SM48S adds a lockable on/off switch

Type
Dynamic
Pattern
Cardioid
Sensitivity
−57.5 dBV/Pa
Impedance
150 Ω
Rated range
55 – 14k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet (Recording Hacks copy), p. 1. "Frequency Response"; relative dB. Distance, 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 spec sheet (Recording Hacks copy), p. 1. "Polar Pattern"; two circles (250 Hz to 1 kHz, 2500 Hz to 10 kHz), 0° at the bottom, 5 dB per ring. The caption under the plots reads "Measured at 1000 Hz", which does not fit the six-frequency legend.

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All specs

From the user guide
Sensitivity−57.5 dBV/Pa (1.3 mV/Pa), at 1 kHz, open circuit voltage. "-57.5 dBV/Pa (1.3 mV)".p. 4
Output impedance150 ohm, rated (EIA); 270 ohm actual. "EIA rated at 150 Ω (270 Ω actual)"; the sheet adds "for connection to microphone inputs rated at 19 to 300 Ω".p. 3
Rated frequency range55 Hz to 14 kHz
Poweringnone (passive). Not stated by the manufacturer: Dynamic; no power requirement is listed.
Switcheson/off (SM48S only): on, off. "Lockable On/Off switch (SM48S only)"; the plain SM48 has no switch.
ConnectorXLR-3 male. "Three-pin professional audio (XLR), male".p. 4
Weight370 g, net. "Net: 0.37 kg (0.82 lb) Packaged: 0.672 kg (1.5 lb)".
Supplied accessoriesA25D microphone clip; 95A2313 carrying/storage bag. Furnished accessories.p. 6
ConstructionShock-mounted cartridge, steel mesh grille and handle, built-in pop filterp. 3
Response shapingPresence rise brightens the mid-range; low-frequency roll-off controls proximity effect
PolarityPositive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3p. 4
Optional accessoriesA58WS windscreen; S37A desk stand; A55M, A55HM isolation mounts; A26M dual mount; C25F 7.5 m cablep. 6
Replacement partsCartridge R136; grille RK248G; on/off switch RK81S and plug assembly RK40P (spec sheet)p. 7
From the spec sheet (Recording Hacks copy)
Dimensions166 × 54.2 mm. "166 mm (6-17/32 in.) L x 54.2 mm (2-9/64 in.) W"; the 2006 guide's drawing adds 21.4 mm at the connector end.p. 1
VariantsSM48; SM48S with a lockable on/off switch

Documents

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

Product page on shure.comRecording Hacks

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