The black body Heil Sound PR 77D is a large-diaphragm dynamic microphone designed to provide focused directionality, full-range frequency response, and a vintage appearance for use on vocals and instruments in podcasting, radio, broadcast, recording, and live stage applications. It features a classic side-address design based upon popular RCA microphones from the ‘50s and ‘60s. Its cardioid polar pattern delivers 40 dB of attenuation 180° off-axis, resulting in a tight pickup area and minimized bleed.
With a high maximum SPL of 146 dB, it can handle a range of sources from vocals and horns to close-miked drums and guitar cabinets. It offers a 40 Hz to 18 kHz frequency response with a selectable high-pass filter at 80 Hz. The integrated microphone mount allows you to attach it directly to a mic stand without the use of an additional clip or shockmount. The PR 77's standard XLR 3-pin output ensures compatibility with most microphone preamps.
Heil Sound PR 77 Specs
| Primary Applications | Studio Recording, Broadcast |
| Sound Field | Mono |
| Operating Principle | Pressure Gradient |
| Capsule | Dynamic |
| Diaphragm | 1.5" / 38.10 mm |
| Polar Pattern | Cardioid |
| Circuitry | Solid-State |
| Pad | None |
| High-Pass Filter | 80 Hz, 6 dB/Octave |
| Frequency Range | 40 Hz to 18 kHz |
| Maximum SPL | 146 dB SPL |
| Impedance | 600 Ohms |
| Sensitivity | -51 dB at 1 kHz |
| Output Connectors (Analog) | 1 x XLR 3-Pin |
| Headphone Connector | None |
| Mounting | 5/8"-27 Female (via Integrated Hardware) |
| Included Case | None |
| Included Filters | None |
| Dimensions | ø: 2.25 x L: 8" / ø: 57.15 x L: 203.2 mm |
| Weight | 24.5 oz / 694.58 g |
| Package Weight | 1.8 lb |
| Box Dimensions (LxWxH) | 11.1 x 6.6 x 6.2" |