Ask Our Experts800-606-6969
Hello, Log InAccount & Orders
Video Chat with a Pro Audio Expert - Live
Key Features
- Cardioid Pickup Pattern
- No Mute Switch
- Interchangeable Mic Capsule
- Preamp with XLR Output
Styled in black, this Shure MX391 is a Microflex cardioid boundary microphone. It's easy to use, features an inline preamp, and offers interchangeable mic capsules. It's designed to pick up speech in a manner preserving its intelligibility. The mic is well suited for sound reinforcement and recording applications in boardrooms, conference centers, educational settings, houses of worship, and more.
More DetailsIn Stock
Protect Your Gear
Add a protection plan from $42.99
See Options
See any errors on this page?
Will this mic work with MXW1 as wireless ...
Will this mic work with MXW1 as wireless solution?
No, the Shure MX391 Microflex Cardioid Boundary Microphone is not compatible with the Shure MXW1 Hybrid Bodypack Transmitter.
Date published: 2024-03-10
Would one mic cover a 6 to 8 foot wide area with ...
Would one mic cover a 6 to 8 foot wide area with 2 to 6 people sitting at a witness table? Will be mixed with 9 other board member goose neck mics, the distance between the dias and the witness table is typically ten to 15 feet giver or take.
The abilities of the Shure MX391 Microflex Cardioid Boundary Microphone will likely be stretched when tasked with picking up voice from 6 to 8 feet, especially if some in this scenario are quiet speakers. For the best results in this specific situation, two MX391 would be ideal.
Date published: 2022-07-23
Will the mic work with MXW1 body pack for ...
Will the mic work with MXW1 body pack for wireless option?
No, the Shure MX391 Microflex Cardioid Boundary Microphone is not compatible with the Shure MXW1 Hybrid Bodypack Transmitter.
Date published: 2024-03-10
question
Does it come supplied with the cardioid cartridge?
Yes - this microphone does include the Cardioid transducer.
Date published: 2018-08-27
question
does the mic hear vibrations on a floor such as dancers or people walking on a stage ?
The Shure MX391 will pick up vibration from the surface it is placed on.
Date published: 2018-08-27
The white version has a 4 prong mini XLR, while ...
The white version has a 4 prong mini XLR, while the black version seems to be standard 3 prong xlr?
The Shure MX391 Microflex Cardioid Boundary Microphone (White) comes with a TA4F connector. It includes a Shure preamplifier that is a TA4M connector on one side for the microphone to plug into, and an XLR on the other side to connect to a mixer, or an XLR mic input with phantom power.
Date published: 2025-11-23
question
I'm trying to understand what it means to provide phantom power is for the shure 391o microphone?
normally 48 v
Date published: 2018-08-27
Will 6 of these work in a meeting hall (25 people ...
Will 6 of these work in a meeting hall (25 people U table) without feedback?
Feedback is typically caused by sound from speakers bleeding back into a microphone, which creates a feedback loop. The Shure MX391 is an omnidirectional boundary microphone, so it will be particularly susceptible to feedback as there is no axis of rejection. Caution should be used if the microphone is connected to speakers in the same area, and the speakers should be faced away from the microphone to avoid feedback.
Date published: 2023-06-01
