CAD Audio 930VPL Variable Polar Pattern Condenser Boundary Microphone
The CAD Audio 930VPL is a continuously variable polar pattern condenser boundary microphone engineered for professional installed AV, conferencing, and speech reinforcement. Unlike fixed-pattern boundary mics, the 930VPL allows system designers to dial in any polar pattern — from omnidirectional to cardioid, hypercardioid, or figure-of-eight — making a single unit adaptable to altars, conference tables, courtrooms, stage floors, and media production environments.
For AV integrators evaluating the best boundary microphone for conference rooms or multi-purpose installed audio systems, the 930VPL addresses a core challenge: no two rooms are acoustically identical. Its continuously variable pattern control, combined with logic I/O for integration with automatic mixers and teleconferencing systems, makes it a natural fit for government, institutional, religious, and corporate AV installations. The programmable membrane switch supports push-to-talk, push-to-mute, on/off, and remote-control modes — configurable via DIP switch without tools.
Built on RF Resistant Architecture that meets or exceeds EN55103-2 immunity standards, the 930VPL handles environments where cell phones and two-way radios create interference challenges. An integral 80 Hz, 12 dB/octave high-pass filter removes unwanted low-frequency energy to improve speech intelligibility, and the boundary effect placement on flat surfaces delivers a natural signal-to-noise ratio improvement. The dual-connector design accommodates both rear and bottom cable exit, streamlining flush-mount tabletop and podium installations. The 930VPL is RoHS compliant and backed by a two-year limited warranty.
Key Features of the CAD Audio 930VPL Boundary Condenser Microphone
- Continuously Variable Polar Pattern: Enables precise pickup pattern tailoring — from omni to figure-of-eight and every point in between — so one mic handles virtually any room configuration or application without substitution.
- Logic I/O Interface: Integrates with automatic mixers, echo-cancellation systems, and control infrastructure via NPN open-collector logic output and 40K ohm pull-up logic input, enabling remote mute control and status monitoring.
- Programmable Membrane Switch with Blue LED: Supports five operating modes (push-to-talk, push-to-mute, power-up on, power-up off, remote) configurable via underside DIP switch — with a blue LED status indicator visible to presenters and participants.
- RF Resistant Architecture: Shields against interference from cell phones and two-way radios, meeting or exceeding EN55103-2 E1–E4 immunity standards for reliable performance in busy RF environments.
- Integral 80 Hz High-Pass Filter: Eliminates HVAC rumble and low-frequency noise at 12 dB/octave to sharpen speech intelligibility — critical in conference rooms and houses of worship.
- Dual Rear/Bottom Cable Exit: Simplifies installation in both surface-mount and recessed tabletop applications, with keyhole mounting slots for secure placement without visible hardware.
- Securable Controls with Adhesive Cover: Polar pattern dial and DIP switch settings can be locked out with an included adhesive security cover, preventing unauthorized adjustments after system commissioning.
Technical Specifications
- Operating Principle: Permanently-biased condenser
- Polar Pattern: Continuously variable (omnidirectional through cardioid, hypercardioid, figure-of-eight)
- Frequency Response: 90 Hz – 17 kHz
- Sensitivity: -32 dBV (25 mV) @ 1 Pa
- Impedance: 120 ohms
- Self Noise: 24 dBA
- Maximum SPL: 120 dB (1% THD, 1 kHz)
- High-Pass Filter: 80 Hz, 12 dB/octave
- Power Requirements: P12, P24, or P48 phantom power, 4 mA
- Connector: TB4M-type (dual, rear and bottom)
- Logic Output: NPN open collector, 30V / 50 mA max
- Logic Input: 40K ohm pull-up resistor to 1.3V
- RF Immunity: Meets or exceeds EN55103-2, E1, E2, E3, and E4
- Finish: Durable matte-black urethane
- Dimensions (L x W x H): 5.5″ x 3.5″ x 0.72″
- Net Weight: 8 oz (0.23 kg)
- Compliance: RoHS compliant
- Warranty: Two-year limited
What’s Included
- CAD Audio 930VPL Boundary Microphone
- 30 ft (9.1 m) detachable cable (TB4M miniature 4-pin female to 3-pin XLRM)
- Protective pouch
- Adhesive security cover
