The DPA Microphones 3506A is a complete 4006A stereo kit with two carefully factory-matched phantom powered omnidirectional condenser microphones. The 4006As are matched within ±0.5 dB on both frequency range and sensitivity in the microphone's entire frequency bandwidth. With the 4006A, engineers, broadcasters and musicians alike can achieve extremely clean, natural and precise reproduction in a variety of applications. Ideal for A-B stereo pairs for symphonic concert hall recordings, the 4006A also excels on vocals and for close-miking instruments like grand piano, guitar, double bass and percussion.

The high sensitivity, low noise-floor and extremely linear frequency response of the microphone pair makes the 3506A the perfect choice for all professional A-B stereo recordings.

A selection of acoustic modification accessories, including interchangeable protection grids and acoustic pressure equalizers, allows the 4006As to be acoustically transformed into different microphone versions, making it the most multifaceted mic in your collection and a tremendous value. By simply changing a grid or adding a ball, it is possible to gain several unique frequency responses and directional characteristics from a single mic. Furthermore, these grids and elements will not produce any phase shift, noise or distortion that would otherwise be introduced by an electrical filter.

Note: Image shown above is for illustrative purposes only, the microphone stand and cables shown are NOT included with purchase of this kit. For more information on this and other products, contact your Sales Representative.

DPA 3506A Includes:

• 2x 4006A Omni Microphones, factory-matched
• 2x APE30RS Acoustic Pressure Equalizer, 30 mm Ball
• 2x APE40RS Acoustic Pressure Equalizer, 40 mm Ball
• 2x APE50RS Acoustic Pressure Equalizer, 50 mm Ball
• 2x DD0251 Free-Field Grid, Silver
• 2x DD0254 Close-Miking Grid, Trapezoid, Silver
• 2x DD0297 Diffuse-Field Grid, Black
• 2x UA0777 Nose Cone
• 2x UA0896 Foam Windscreen for 2006C/4006C/4011/4015C
• 2x UA0961 Microphone Clip
• 1x UA0837 Stereo Boom excluding Holders

DPA 3506A Specifications:

• Directional characteristics: Omnidirectional
• Principle of operation: Pressure
• Cartridge type: Pre-polarized condenser
• Frequency range: 10 Hz to 20 kHz
• Frequency range, ± 2 dB: 0 Hz to 20 kHz
• Sensitivity, nominal, ±2 dB at 250 Hz: 40 mV/Pa; -28 dB re. 1 V/Pa
• Equivalent noise level, A-weighted: Typ. 15 dB(A) re. 20 µPa (max. 17 dB(A))
• Equivalent noise level, ITU-R BS.468-4: Typ. 27 dB (max. 29 dB)
• S/N ratio (A-weighted), re. 1 kHz at 1 Pa (94 dB SPL): Typ. 79 dB(A)
• Total Harmonic Distortion (THD): < 1 % up to 139 dB SPL peak
• Minimum load impedance: 2 kOhms
• Dynamic range: Typ. 124 dB
• Max. SPL, peak before clipping: 147 dB
• Switchable attenuator: 0 dB / -20 dB
• Output impedance: < 200 ohm
• Cable drive capability: 100 m (328 ft)
• Output balance principle: Impedance balancing with Active Drive
• Common Mode Rejection Ratio (CMRR): > 60 dB
• Power supply (for full specifications): 48 V Phantom power (± 4 V)
• Current consumption: 2.8 mA
• Connector: XLR-3M. Pin 1: shield, Pin 2: signal + phase, Pin 3: - phase
• Color: Matte black
• Weight: 163 g (5.7 oz)
• Microphone diameter: 16 to 19 mm (0.63" to 0.75")
• Capsule diameter: 16 mm (0.63")
• Microphone length: 170 mm (6.7")
• Output voltage, RMS: > 5 V
• Polarity: +V at Pin 2 for positive sound pressure
• Temperature range: -40 °C to 50 °C (-40 °F to 122 °F)
• Relative Humidity (RH): Up to 90 %
• Classification: Conforms to IEC 61672 Class I (with Near-field Grid DD0251)
• Matching tolerance (frequency response and sensitivity): ± 0.5 dB
• Phase deviation for kit: < 5°