Mic Archive
Sennheiser MD 409
Photo: Sennheiser, from its user guide, p. 1.

Sennheiser

Sennheiser MD 409

Dynamic (moving coil), cardioid, flat rectangular side-address mic for drums, brass and instrument amps; documented here as the MD 409 U 3 (XLR version)

Approximate Some readings for this mic are uncertain; see the graphs.

Type
Dynamic
Pattern
Cardioid
Sensitivity
−58.6 dBV/Pa
Impedance
200 Ω
Rated range
50 – 15k Hz

Frequency response

Angle
Distance

Frequency response: from the user guide, p. 2. "Frequenzkurve/Frequency response/Courbe de réponse"; absolute level: an arrow marks "1 mV/Pa" on one gridline and a bar marks 10 dB. "Meßabstand" (measuring distance) 5 cm and 100 cm. Room and smoothing not stated. Approximate reading error up to about 1 dB.

The manufacturer draws absolute sensitivity (dBV/Pa); shifted here by a constant so 1 kHz is near 0 dB.

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

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All specs

From the user guide
Sensitivity−58.6 dBV/Pa (1.18 mV/Pa), open circuit, 1 kHz, ±2.5 dB. "Open circuit output voltage at 1000 Hz: 1.18 mV/Pa ± 2.5 dB"; converted (20 log10 0.00118 = -58.6).p. 3
Output impedance200 ohm, at 1 kHz. "Electrical impedance at 1000 Hz: 200 Ω".
Rated load impedance200 ohm, minimum. "Min. load impedance: ≥ 200 Ω"; "The minimum load impedance shouldn't be less than 200 Ω."
Rated frequency range50 Hz to 15 kHz. "Frequency response: 50-15 000 Hz"; no tolerance stated.
Poweringnone (passive). Not stated; a dynamic mic needs no power.
ConnectorXLR-3 male. "3-pin XLR-plug"; balanced, low impedance.
Weight180 g, approx.. "approx. 180 g".
Dimensions55 × 34 × 134 mm. "Dimensions in mm: 55 x 34 x 134" (the order of the three sides is not said).
Supplied accessoriesMZQ 100 quick release clamp. "Extent of delivery: 1 microphone, 1 quick release clamp MZQ 100".
Acoustical mode of operationPressure gradient receiver
Wiring2 and 3 = moving coil; 1 and housing = ground
ConstructionLarge-surface diaphragm; shock-mounted system; stainless steel sound inlet basket; gold-plated sound inlet; flat rectangular design
ClampMZQ 100 quick release clamp with thread insert for 3/8", 1/2" and 5/8"-27 stands; unbreakable
FrontThe sound inlet side is marked "Front"
Suitable cables (Sennheiser)KA 7 U (XLR, 7 m, art. 1777); MZK 431 UK (6.3 mm jack, 5 m, art. 1606); MZK 431 UK-1 (10 m, art. 2108)
Uses (Sennheiser)Percussion and brass wind instruments; instrument amplifiers

Documents

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

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