Mic Archive
Shure KSM313
Photo: Shure, from its spec sheet, p. 1.

Shure

Shure KSM313

Passive ribbon (Roswellite), figure-8, side-address, "Dual-Voice": darker front, brighter rear

Type
Ribbon
Pattern
Figure-8
Sensitivity
−54.5 dBV/Pa
Max SPL
146 dB SPL
Impedance
330 Ω
Rated range
30 – 15k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet, p. 1. "Frequency Response, Front" ("Relative Response, 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, p. 1. "Polar Pattern", two circles (125, 500, 1000 Hz; 2, 4, 8 kHz), 0° (the front) at the bottom, 5 dB per ring. Distance and room not stated. The rear lobe is opposite in polarity (guide p. 4: invert the polarity when addressing the back).

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All specs

From the user guide
CapsuleRoswellite ribbon (in place of a foil ribbon); "Dual-Voice" ribbon motor assembly with different front and rear voicing. "True “Dual-Voice” ribbon motor assembly, tuned specifically for user’s choice of frequency response".p. 3
Sensitivity−54.5 dBV/Pa (1.88 mV/Pa), 1 kHz, open circuit voltage, typical. "-54.5 dBV/Pa (1.88 mV)".p. 6
Max SPL146 dB SPL. No condition given.
Output impedance330 ohm; also 270 ohm, spec sheet: "Transformer, balanced, actual 270 Ω". "Output Impedance 330 Ω". The 2015 spec sheet gives 270 Ω actual; the KSM353 is 330 Ω in both documents.
Rated load impedance1000 ohm, recommended, or more. "Shure recommends using preamps with impedance settings of 1000 Ohms or more, although different load impedances may be used for a desired sound quality."p. 3
Rated frequency range30 Hz to 15 kHzp. 6
Poweringnone (passive). "Phantom power is not necessary and should not be supplied when connecting or disconnecting the microphone. However, properly supplied phantom power will not harm the microphone."
Weight400 g. "400 g (14 oz.)"; the spec sheet: "400g (0.881 lbs)".
Dimensions43 × 135 mm. Drawing: "1.7 in (43 mm)" across, "5.3 in (135 mm)" long (diameter × length). The spec sheet: diameter 4.318 cm, height 13.5 cm.p. 7
FinishMachined steel housing; black body with red grille. "Housing: Machined Steel". Colours from the spec sheet photo.p. 6
Supplied accessoriesA300M ShureLock stand mount; AK313C carrying case; A313VB velveteen pouch. "Furnished Accessories". The spec sheet calls the case a zippered carrying case and prints the stand mount as "300M".
Dual-VoiceAddress the front for a warmer, darker tone (electric guitar amplifiers, brass and woodwind, upright bass, kick drum); the rear for a brighter tone with more presence (vocals, acoustic string instruments, drum overheads and percussion)p. 4
Rear pickupWhen addressing the back side, invert the signal polarity (A15PRS in-line polarity reverser)
PolarityPositive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3p. 6
TransformerCustom-wound, double-shielded, full-size transformerp. 3
ConstructionHand-assembled from machined steel, silver, gold and aluminium components; the spec sheet says hand assembled in the USA
Optional accessoriesA313SM elastic suspension shock mount; A15PRS switchable polarity reverser; PS-6 Popper Stopper pop filter; C25E 7.5 m (25 ft) XLR cablep. 7
From the spec sheet
ConnectorXLR-3 male. "Three pin professional audio (XLR) male".p. 1
ModelsKSM313/NE: stand mount, aluminium flight case, velveteen pouch

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.com

Recommended for

Instruments whose sources name this mic, or an earlier version or variant of it.

Other mics