Mic Archive
Shure KSM8 Dualdyne
Photo: Shure, from its spec sheet, p. 1.

Shure

Shure KSM8 Dualdyne

Dynamic (moving coil) cardioid handheld vocal mic with two diaphragms (one active, one passive) for reduced proximity effect

Type
Dynamic
Pattern
Cardioid
Sensitivity
−51.5 dBV/Pa
Impedance
300 Ω
Rated range
40 – 16k Hz

Frequency response

Angle
Distance

Frequency response: from the user guide, p. 8. "Frequency Response", "0,6 m (2 ft.) from sound source"; 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. 8. "Polar Pattern"; two circles (250 Hz to 1 kHz, and 2500 to 9000 Hz), 0° at the bottom, 5 dB per ring, centre -20 dB. Distance not stated.

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All specs

From the spec sheet
CapsuleDualdyne cartridge: two ultra-thin diaphragms, one active and one passive, with an inverted (reversed side-entry) airflow. Features: "Patented cartridge design featuring two ultra-thin diaphragms (one active and one passive) and groundbreaking inverted airflow system". The guide (p. 5) explains that sound enters at the side, passes the rear diaphragm and then strikes the front one.p. 1
Sensitivity−51.5 dBV/Pa (2.66 mV/Pa), at 1 kHz, open circuit voltage. "-51.5 dBV/Pa (2.66 mV)". The guide (p. 8) prints "-51.5 dBV/Pa (1.85 mV)"; -51.5 dBV/Pa is 2.66 mV, so the guide's mV figure is a misprint.
Output impedance300 ohm, output impedance. "300 ohms".
Rated frequency range40 Hz to 16 kHz
ConnectorXLR-3 male. "Three-pin professional audio (XLR), male".
Weight330 g, net. "330 g (11.64 oz.)".
Finishblack paint (KSM8/B) or brushed nickel (KSM8/N). Available Models; housing "Die-cast Aluminum with Paint or Brushed Nickel Finish".
HousingDie-cast aluminium with paint or brushed nickel finish
GrilleDent-resistant hardened carbon-steel grille lined with hydrophobic woven fabric (permanently attached)
PolarityPositive pressure on diaphragm produces positive voltage on pin 2 with respect to pin 3
Wireless capsulesRPW170 (brushed nickel) and RPW174 (black), for Shure handheld transmitters
Optional accessories and replacement partsA85WS black foam windscreen; RPM266 black grille; RPM268 brushed nickel grille
From the user guide
Dimensions187.9 × 48.3 mm. Dimension drawing: length 187.9 mm (7.4 in.), grille diameter 48.3 mm (1.9 in.); the connector end is 20.3 mm (0.8 in.) across.p. 8
Supplied accessoriesAK8C zippered carrying case; A25E soft-flex swivel stand adapter; 95A2050 5/8" to 3/8" thread adapter. Furnished accessories; the spec sheet lists only AK8C and A25E.p. 7
Shock mountAdvanced pneumatic shock mount with the Diaphragm Stabilization System (DSS)p. 6
Working distance (Shure)Balanced response from 0 to 6 in. (0-15 cm), where a traditional dynamic gains bass up close (0-1 in.) and loses it beyond 3 in.

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

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