Description
The BP4029 (AT835ST) Stereo Shotgun Microphone from Audio-Technica offers two internally-matrixed modes which provide traditional “left-right” stereo. To accommodate varying acoustic environments, the user may select between a “wide” pattern (LR-W) with increased ambient pickup, and a “narrow” pattern (LR-N) which offers more rejection and less ambience.
In M-S mode, the BP4029 provides independent Mid and Side signals. This allows the Mid-Side balance to be adjusted as desired at the recording desk or mixing electronics, reducing the amount of equipment necessary in the field.
- Independent line-cardioid and figure-of-eight condenser elements
- Switch selection of non-matrixed M-S mode and two internally-matrixed left/right stereo modes
he Audio-Technica BP4029 is a stereo shotgun condenser microphone designed for high-quality broadcast and field recording applications. Here are the full details:
Microphone Specifications:
- Element: Externally polarized (DC bias) condenser
- Polar Pattern: Mid-Side (MS) stereo (middle: line + gradient; side: figure-of-eight)
- Frequency Response: 20 Hz to 20 kHz
- Low Frequency Roll-Off: 80 Hz, 12 dB/octave
- Open Circuit Sensitivity:
- Mid: -30 dB (31.6 mV) re 1V at 1 Pa
- Side: -36 dB (15.8 mV) re 1V at 1 Pa
- Impedance: 200 ohms
- Maximum Input Sound Level:
- Mid: 128 dB SPL, 1 kHz at 1% T.H.D.
- Side: 122 dB SPL, 1 kHz at 1% T.H.D.
- Dynamic Range (Typical):
- Mid: 108 dB, 1 kHz at Max SPL
- Side: 100 dB, 1 kHz at Max SPL
- Signal-to-Noise Ratio (1 kHz at 1 Pa):
- Mid: 79 dB
- Side: 73 dB
- Phantom Power Requirements: 48V DC, 4.8 mA typical
- Switch: Flat, roll-off; stereo mode (wide), stereo mode (narrow), M-S mode
- Weight: 147 g (5.2 oz)
- Dimensions:
- Length: 380.0 mm (14.96″)
- Diameter: 21.0 mm (0.83″)
- Output Connector: Integral 5-pin XLRM-type
- Cable: 0.61 m (2.0′) long, 8-conductor shielded cable with 5-pin XLRF-type connector at microphone end, two standard 3-pin XLRM-type connectors at output end
- Accessories Furnished: AT8405a stand clamp for 5/8″-27 threaded stands; AT8145 windscreen; protective carrying case
Key Features:
- Stereo Shotgun Design: Ideal for professional broadcast and field recording, offering high-quality stereo audio capture.
- Mid-Side (MS) Stereo Configuration: Allows for flexible stereo imaging and control during post-production.
- Switchable Low-Frequency Roll-Off: Reduces unwanted low-frequency noise and rumble.
- Compact and Lightweight: Ensures ease of use and versatility in various recording environments.
- Phantom Power Operation: Requires 48V DC phantom power for operation.
The BP4029 is engineered to provide superior audio quality with excellent stereo imaging and detailed sound reproduction, making it suitable for a wide range of professional audio applications.
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