Mic Archive
Heil PR 35
Photo: Heil Sound, from its spec sheet, p. 1.

Heil Sound

Heil PR 35

Large-diaphragm handheld dynamic, supercardioid, for live vocals, with a low-cut switch

Type
Dynamic
Pattern
Supercardioid
Sensitivity
−52.9 dBV/Pa computed
Max SPL
140 dB SPL
Impedance
370 Ω
Rated range
40 – 18k Hz

Frequency response

Angle
Distance

Frequency response: from the spec sheet, p. 2. Untitled graph; legend "0 Deg" and "180 Deg". The dB axis is labelled -40 to -90 with no unit (values kept as printed). Filter position, distance, room and smoothing not stated.

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 spec sheet
Capsule1 1/2 inch dynamic element (the PR 30's), aluminium low-mass voice coil, neodymium iron boron magnet, hum-bucking coil. "the large aluminum 1 1/2" low mass voice coil assembly encompassed by a neodymium magnet assembly comprised of neodymium, iron and boron". The 2010 sheet mentions the hum-bucking coil (p. 2).p. 2
Sensitivity−52.9 dBV/Pa, 1 kHz. Not stated by the manufacturer: "Output Level -52.9 dB @ 1 kHz", no reference given; taken as dB re 1 V/Pa. The 0° curve on the graph (axis -40 to -90, no unit) sits near -58.5 at 1 kHz, about 5.5 dB lower.
Max SPL140 dB SPL, distortion not stated. "Max SPL 140 dB".
Output impedance370 ohm, balanced; also 600 ohm, 2010 spec sheet ("600 ohm balanced"). "370 ohms balanced"; the product page agrees.
Rated frequency range40 Hz to 18 kHz, filter up (off); also [80, 18000], filter down (on). "40 Hz - 18 kHz (UP- no filter)", "80 Hz - 18 kHz (DOWN- filter on)". The 2010 sheet: "40 Hz. to 18 kHz. at the –3 dB points" (p. 2).
Poweringnone (passive). "without the inconvenience of phantom or outside d.c. powering".
Low cutoff, 80 Hz, 6 dB/octave; 80 Hz; 6 dB/octave. "an internal low-frequency filter push button switch which can be accessed by using a small screwdriver or paperclip. With the switch pushed DOWN, the audio rolls off at 80Hz at -6 dB per octave."
ConnectorXLR-3 male. "Output Connection: 3 pin XLR"; "Polarity: pin 2+" in the 2010 sheet.
Rear rejection-35 dB at 180° off axis
Shock mountElement in an internal rubber shock mount (2023); a Sorbothane shock mount atop a non-resonant fixture (2010)
Off-axis colouration (Heil)"There is virtually no off-axis coloration, even if 'cupped', the response of this microphone will not change"
Suggested accessoriesSM-1 shock mount, PL2T boom, SB-2 boom, Pro Set 3 headphonesp. 1
From the spec sheet (Recording Hacks copy)
Dimensions195 × 50 × 25 mm. Not stated by the manufacturer: Length × diameter × stem: "7.67"", "1.97"" and ".98"" converted; the dimension drawing (p. 2) agrees.p. 1
FinishBlack rubberised coating. "black rubberized"; the case is steel, "finished in a rubberized, matte black" (p. 2).
Supplied accessoriesSM-5 mic clip; aluminium carrying case. "Furnished Accessories: SM-5 mic clip and aluminum carrying case" (2010); optional PL 2T and SB-2 booms.
CaseSteel
Made inAssembled and tested in Illinois (2010 sheet)
From the product page
Weight255 g; also 298, 2010 spec sheet ("10.5 oz", converted). "Weight 9 oz (255 g)"; the 2023 sheet says "9 oz.".p. 1

Documents

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

Product page on heilsound.comRecording Hacks

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