Heil PR 40 Dynamic Broadcast Microphone

The Heil PR 40 is an end-address large diaphragm dynamic broadcast microphone, widely used for podcasting, radio and voice-over. It looks like a side-address condenser, but you speak into the top.

A large, low-mass aluminium voice coil gives an unusually wide 28 Hz to 18 kHz response for a dynamic, with natural voice reproduction. Four rear ports deliver -40 dB of rear rejection and keep proximity effect in check, while a hum-bucking coil and heavy steel body shield it from interference. Heil also lists it for kick drum, bass cabinet and horns.

Key features

• End-address cardioid dynamic with 1 1/8 inch low-mass diaphragm
• Frequency response 28 Hz to 18 kHz
• -40 dB rear rejection at 180 degrees
• Hum-bucking coil and steel body
• Handles up to 148 dB SPL
• 600 ohm balanced output, 3-pin XLR
• Assembled and tested in Illinois, USA