Bogen SI35A Multi-Graphic Desktop Control Center

The Bogen SI35A Multi-Graphic Desktop Control Center is a professional audio control device designed for multi-graphic desktop applications. It features a rated program output of 35 WRMS and an intercom output of 20 WRMS with 25 V balanced line, line out to booster. The frequency response ranges from 80 Hz to 15 kHz with shaped characteristics for maximum intelligibility. Distortion is less than 1% at rated power and bandwidth. It includes two low-impedance balanced MIC inputs, high-impedance unbalanced AUX, Telco Page, and 25V booster inputs. Phantom power is provided at 15 VDC. Input sensitivity varies with program, MIC input at 300μV balanced Lo-Z, AUX at 100mV unbalanced Hi-Z, Telco Page at 100mV unbalanced Hi-Z, and intercom listen mode at 300 μV balanced Lo-Z. Control features include front panel selection for program, MIC 1, MIC 2, AUX, level, monitor/listen, distribution, and indicators. Rear panel includes input gain controls for various inputs. Tone settings include time tone at 750 Hz, supervisory tone at 500 Hz, call-in tone oscillating between 500 Hz and 750 Hz with switching frequency of 16 Hz. Power requirements are 120 VAC, 60 Hz, with a maximum of 100 W. The cabinet has a simulated wood grain finish, and the panel is black with color-coded lines and instructions for intercom, program, and emergency page. Operating temperature ranges from 0 to 130°F (-18 to 54.4°C).

• Output: Rated Program: 35 WRMS Intercom: 20 WRMS 25 V Balanced line, Line Out to Booster
• Frequency Response: Program: +1, -3 dB from 80 Hz to 15 kHz Intercom: Shaped for maximum intelligibility
• Distortion: Less than 1% at rated power and bandwidth
• Input: Two Lo-Z balanced MIC: Hi-Z unbalanced AUX; Telco Page; 25V Booster
• Phantom Power: 15 VDC