The document describes the beyerdynamic M Series PRO X wired microphones, specifically the M 70 PRO X and M 90 PRO X models. These microphones are designed for high-quality audio recording in various applications, including broadcast, music, and general use.
Function Description
The M Series PRO X microphones are wired microphones intended for professional audio recording. Both models feature a cardioid polar pattern, which effectively suppresses unwanted sound waves from the sides and rear, focusing on the sound source directly in front of the microphone. This characteristic makes them ideal for isolating vocals or instruments in noisy environments and for broadcast applications where clear speech is paramount.
The M 70 PRO X is a dynamic microphone with an extended and balanced frequency response, making it suitable for recording speech, vocals, and instruments. Its precisely tuned proximity effect ensures consistent sound clarity, while the robust design and integrated elastic suspension protect against structure-borne noise. The included pop filter helps to suppress plosive sounds.
The M 90 PRO X is a condenser microphone featuring a 34-mm true condenser capsule. It is specifically developed for high-quality recording of vocals and instruments, and also excels at natural-sounding speech recording for broadcasts. The low-noise circuit ensures high-standard electrical signal processing. Like the M 70 PRO X, it includes an integrated elastic system suspension for protection against structure-borne noise and a pop filter to mitigate plosive sounds. The M 90 PRO X requires phantom power (24-52V) for operation.
Important Technical Specifications
M 70 PRO X (Dynamic Microphone)
- Converter principle: Dynamic
- Operating principle: Pressure gradient receiver
- Polar pattern: Cardioid
- Frequency response:
- Near field: 25–18,000 Hz
- Far field (distance 1 m): 40–18,000 Hz
- Open-circuit sensitivity: 1.8 mV/Pa (-55.0 dBV) ±3 dB
- Nominal impedance: 350 Ω
- Nominal terminating impedance: ≥ 1.5 kΩ
- Connection: XLR, 3-pin, male
- Length: 185 mm
- Diameter: 52 mm
- Weight: 320 g
- Applications: Speech for broadcast (radio, podcast, streaming), Vocals (rock, pop music), Guitar and bass amps.
M 90 PRO X (Condenser Microphone)
- Converter principle: Condenser
- Operating principle: Pressure gradient receiver
- Polar pattern: Cardioid
- Frequency response: 20–20,000 Hz
- Open-circuit sensitivity at 1 kHz (0 dB = 1 V/Pa): 36.3 mV/Pa = -28.8 dBV ±2 dB
- Nominal impedance: < 180 Ω
- Nominal terminating impedance: ≥ 1,000 Ω
- Maximum sound pressure level (at 1 kHz): 133 dB
- S/N ratio (referenced to 1 Pa): 88.4 dBA
- Equivalent sound pressure level (A-weighted): 5.6 dB
- Power supply: 20–52 V (phantom)
- Current consumption: < 6.2 mA
- Connection: XLR, 3-pin, male
- Length: 197 mm
- Diameter: 52 mm
- Weight: 296 g
- Applications: Vocals, Acoustic guitar, Piano, Strings, Speech for broadcast, Universal use (percussion, room miking, choir and orchestra).
Usage Features
Both microphones come with an elastic suspension (spider) and a pop filter, which are essential accessories for optimal performance.
- Attaching the microphone: The microphone is inserted into the spider (elastic suspension) and secured with a mounting nut. The spider then attaches to a stand using a stand connector.
- Connecting the microphone: Both models use a 3-pin XLR connector. The M 70 PRO X can be connected to any microphone input with a suitable cable. The M 90 PRO X requires phantom power (24-52V) from the microphone input.
- Aligning the microphone: Users should position the microphone so that the speech direction (indicated by an arrow on the microphone body) is opposite to the source of interference. This maximizes noise suppression due to the cardioid polar pattern.
- Safety: Users are warned about cable trip hazards and the importance of ensuring a stable stand to prevent damage to the microphone. The manual emphasizes that repairs should only be carried out by authorized specialists, and opening the microphone by the customer voids the warranty. The product should not be exposed to rain, snow, liquids, or moisture, and should only be used under specified technical data conditions with approved accessories.
Maintenance Features
- Cleaning: The surface of the microphone can be cleaned with a soft cloth moistened with water. It is crucial to ensure that no water enters the microphone and to avoid using cleaning agents containing solvents.
- Service and Warranty: beyerdynamic provides a limited warranty of 2 years. For service or warranty claims, users are advised to contact an authorized specialist and refer to the beyerdynamic website for information on service, spare parts, and warranty conditions.
- Disposal: At the end of its life, the product should be disposed of at a recycling facility for electric and electronic devices, not with normal household waste. The WEEE symbol on the product indicates this.
- Further Information and Troubleshooting: beyerdynamic provides additional resources on their website (www.beyerdynamic.com/microphones.html, support.beyerdynamic.com) and YouTube channel (www.youtube.com/beyerdynamic) for tutorials, instructions, and troubleshooting.
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