Audix ADX 51

ADX51

Professional electret condenser microphone with pad and roll-off

OVERVIEW

The ADX51 is a professional pre-polarized condenser microphone used for stage, studio and broadcast applications. The ADX51 is known for its clear, accurate response and flexibility to handle close or distance miking for a wide variety of acoustic instruments.

Characterized with a uniformly controlled cardioid polar pattern, the ADX51 is designed to capture the acoustics of the instrument being miked while at the same time isolating it from the rest of the instruments on stage. With a wide frequency range of 40 Hz - 18 kHz, the ADX51 features a 14 mm gold vapor diaphragm and a -10 dB pad and bass roll-off filter at 150 Hz.

The ADX51 is very easy to position, durable and manufactured to high standards and tight tolerances. The ADX51 has a precision machined brass body, durable black E-coat finish, steel mesh grill, and gold plated XLR connector.

SUPPLIED ACCESSORIES

• DCLIP - Heavy-duty nylon molded snap on clip
• P1 - Carrying pouch
• WS1C - External foam windscreen for reducing wind, sibilance and pop noise

OPTIONAL ACCESSORIES

• APS2 - Two-channel 48 V phantom power supply. 110 V switchable to 240 V. Detachable power cord.
• DFLEX - Dual pivot rim mounted clip with extra wide butterfly jaws.
• CBL20 - 20’ premium XLR-XLR balanced mic cable. Quad conductor, twisted pair with braided shield for conductivity. 6 mm PVC jacketed.
• PD133 - Optional two-layer mesh pop diffuser for controlling acoustic plosives.
• SMT25 - Low profile shock mount system with nylon cable and thumbscrew for positioning.

OPERATION AND MAINTENANCE

The ADX51 will NOT operate without phantom power voltage (48 Volts recommended) which is available on most professional mic preamps and mixing devices. If phantom power is not available on your equipment, use a phantom power supply such as the Audix APS2. Avoid plugging or unplugging the microphone from a PA system unless the channel is muted or the volume of the system is turned down. Failure to do so may result in a loud 'popping' noise which could seriously damage the speakers in the PA system, studio monitors or headphones.

Pad and Roll-Off: These recessed switches are located towards the middle of the mic. You will need either a miniature screw driver or a pen to move them down (engaged) or up (not engaged).

Pad: The switch on the left side of the mic is a -10 dB pad. This means you can reduce the input level of the mic by 10 dB. This is very helpful for miking extremely loud instruments (guitars, drums, horns) that can drive the mic into distortion. Note that the feature is active when the switch is in the down position.

Bass Roll-Off: This feature gently rolls off the bass frequencies starting at 150 Hz and below which is very helpful in reducing boominess for voice or instrument. Note that the feature is active when the switch is in the down position.

USER TIPS

The ADX51, an excellent choice to mic any kind of acoustic instrument, has a cardioid pick-up pattern which helps to eliminate sound from other instruments on stage from 'bleeding' into the microphone. However, theADX51 is much more sensitive than a dynamic mic and will pick-up sound from a greater distance. The acoustic nature of the instrument being miked along with how loud it is will determine how far the microphone should be from the sound source. For example, the ADX51 can be placed 1-2 feet above the cymbals of a drum kit and still pick up plenty of sound , whereas for a high-hat, the mic will need to be placed within 4-6 inches to be effective. Allow a distance of 2-3 feet between microphones to avoid phase issues.

Further miking techniques may be found at www.audixusa.com.