The cardioid MKH 8040 is suitable for almost any application, considerably reducing the pick-up of...The cardioid MKH 8040 is suitable for almost any application, considerably reducing the pick-up of a reverberant room. This is helpful in rooms with poor acoustics or when disturbing sounds impinge mainly from the rear. A neat addition to film as well as music production rigs, this pair of Sennheiser MKH 8040 stereo microphones boast the impeccably neutral sound of RF bias tech and feature a temperature and humidity resistant design, making them the favourite go-to for audio engineers working outdoors on location. Thanks to the wide 30Hz to 50kHz frequency range, this matched pair is able to capture everything from acoustic instruments to full choirs and even orchestras.
The Sennheiser MKH 8040 Stereo Set is designed for audio engineers seeking versatile, high-quality cardioid microphones for diverse recording applications, especially in challenging acoustic environments or on location. Its key benefit lies in its ability to significantly reduce room reverberation and reject off-axis sound, ensuring cleaner recordings. A potential caveat is its RF bias technology, which requires a compatible power source and might be less familiar to users accustomed to traditional condenser microphones.
All features
Model Part Number
MKH 8040
Brand
Sennheiser
Extended Product Information
FAQs
What type of phantom power do the MKH 8040 microphones require?
The Sennheiser MKH 8040 microphones require 12V RF bias phantom power. Standard 48V phantom power is not compatible and can damage the microphones.
Can I use these microphones outdoors in humid conditions?
Yes, the MKH 8040 features a temperature and humidity resistant design, making it suitable for outdoor and location recording.
How does the cardioid pattern help in noisy environments?
The cardioid pattern primarily picks up sound from the front and significantly attenuates sounds from the sides and rear. This helps in isolating the desired sound source and reducing the impact of background noise and room reverberation.
What is RF bias technology?
RF bias technology uses a high-frequency radio wave to bias the condenser capsule. This method offers excellent sonic neutrality, high transient response, and increased immunity to humidity and temperature compared to traditional DC-biased condenser microphones.
Are these microphones suitable for recording orchestras?
Yes, with their wide frequency range and neutral sound, the MKH 8040 Stereo Set is capable of capturing the full detail of an orchestra, especially when used in appropriate stereo configurations.
Can I use a single MKH 8040 for mono recording?
Yes, each MKH 8040 is a fully functional cardioid microphone and can be used individually for mono recording tasks.
Troubleshooting
No sound output from microphones.
Verify that the audio interface or mixer is supplying 12V RF bias phantom power to the XLR inputs. Confirm that the XLR cables are securely connected at both ends. Check that the input channel on your mixer/interface is not muted and that the gain is set appropriately.
Hum or buzz in the audio signal.
Ensure proper grounding of your audio equipment. Try using balanced XLR cables. Test the microphones with a different audio interface or mixer to rule out equipment issues. Check if the power supply for the audio interface is stable.
Distorted or clipping audio.
Reduce the input gain on your mixer or audio interface. Ensure the sound source is not too loud for the microphones' sensitivity. Check for any digital clipping in your recording software.
Intermittent signal loss.
Inspect XLR cables for damage and ensure firm connections. Try different cables. Check for any potential interference sources near the microphones or cables.
Pros and Cons
Pros
Excellent rejection of off-axis sound and room ambiance.
Neutral and detailed sound reproduction.
Robust construction suitable for demanding environments.
Wide frequency response captures subtle details.
Compact size for flexible positioning.
Cons
Requires specific RF bias phantom power (12V).
Cardioid pattern may be too narrow for capturing very wide stereo images in certain situations.
Price point may be higher than some alternatives.
RF bias technology might require a learning curve for new users.
Setup, Compatibility & Care
Setup
Connect each MKH 8040 microphone to a compatible audio interface or mixer using standard XLR cables.
Ensure your preamplifier or mixer provides 12V RF bias phantom power, as required by the MKH 8040. Standard 48V phantom power is *not* compatible.
Position the microphones according to your desired stereo technique (e.g., ORTF, XY, AB) for optimal soundstage capture.
Compatibility
Power: Requires 12V phantom power specifically designed for RF condenser microphones. Standard 48V phantom power will not work and could potentially damage the microphones.
Connectors: Standard 3-pin XLR male connectors.
Care
Store microphones in a dry, protected environment when not in use.
Avoid exposing the microphones to extreme temperatures or prolonged high humidity beyond their specified operational limits.
Clean the microphone bodies with a soft, dry cloth. Do not use solvents or abrasive cleaners.
Handle microphones with care to avoid physical damage to the grille or capsule.