Audio Control C-50A

The Audio Control C-50A is a real-time spectrum analyzer for precision acoustic measurement and audio system evaluation. It captures sound pressure level (SPL) data and frequency spectrum information across selectable resolution modes, with configurable display ranges and multiple input options for integration into professional audio setups.

## Technical Specifications

• **Display Resolution:** Selectable dB per step (1 dB, 2 dB, 4 dB); 4 dB per step yields 36 dB overall display range
• **Input Signal Level:** −56 dBu to +36 dBu; 0 dBu corresponds to 100 dB SPL
• **Input Impedance:** Auxiliary input 10 kΩ; RCA input 1 MΩ in parallel with 30 pF
• **Power:** AC input via IEC 3-prong receptacle; factory configured for designated voltage (see rear panel)
• **Dimensions:** Approximately 4.1″ H × 10″ W × 13.5″ D
• **Weight:** 3 kg

## Key Features

• Real-time spectrum analysis with octave-wide frequency segments
• Peak-hold function accumulates maximum peak levels in each display band
• Dual averaging modes: slow averaging (20-second integration) and multi-reading averaging (up to 256 stored readings)
• Internal pink noise generator with output
• Stores up to six response curves with recall capability
• Flip-out front feet for angled viewing
• Microphone input compatible with Audio Control laboratory condenser microphones
• Auxiliary and RCA input connectors for flexible source integration

## Typical Applications

Frequency response measurement and system tuning in audio installations. Real-time acoustic troubleshooting and performance validation across variable SPL ranges. Comparative analysis using stored response curve memory.

## Compatibility & Integration

Accepts external laboratory condenser microphones for calibrated SPL measurements. Integrates with standard audio components via RCA and auxiliary connectors. Optional accessories include rechargeable battery pack (BP-10, up to 4 hours runtime), parallel printer port (PI-10), A- and C-weighting filters (AC-10), rack mount adapter (RM-10), and carrying case (SC-10).