The heil PR-40 is a high-quality studio microphone with wide frequency response, which offers a bright and natural sound. Heil calls this product a 'thouroughbred workhorse' of the studio - i.e. a microphone with universal appeal for voice and instrumental recordings which fulfills highest demands. The extremely large diaphragm of the microphone has approx 25mm diameter and is mounted vibration-free in a solid steel enclosure. This specially designed enclosure has two screens with different apertures, which also suppresses popping noises.
The PR-40 by Heil Sound has a cardioid pattern which makes it very useful for radio and broadcast applications (rear attenuation approx 40dB). The frequency resposne is approx. 28 to 18000 Hz. The microphone is supplied with a clamp for the usual microphone stands, also included in shipment is a protective bag. The microphone impedance is 600 Ohm, the output level of -59 dB @1 kHz equals standard studio equipment. The connector is a professional 3 pin XLR type, the weight of the PR-40 is approx. 384 g.