SI35A Bogen Multi-Graphic Desktop Control Center

The SI35A provides fast, reliable, and efficient intercommunication and tone signalling in small to medium-sized schools. The SI35A provides a 20-watt intercom amplifier to permit instant intercommunication with any speaker-equipped location, and a separate 35-watt program amplifier for simultaneous distribution of program material to other rooms or locations. The system also features an emergency page capability for emergency announcements to all stations at once.
The SI35A provides complete facilities for distributing a variety of program materials from optional equipment such as microphones, CD player- AM/FM receiver, or other background music source. Selection of program material, as well asts distribution to selected rooms is accomplished with simple push-button program selection and by following the color-coded guidelines.

Specifications

• Rated Output
  • Program - 35WRMS
  • Intercom - 20WRMS
• 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
• Inputs - Two Lo-Z balanced MIC - Hi-Z unbalanced AUX; Telco Page; 25V Booster
• Output - 25V Balanced line, Line Out to Booster
• Phantom Power - 15V DC
• Input Sensitivity (for rated output)
  • Program - MIC Input - 300μV balanced Lo-Z; AUX - 100mV unbalanced Hi-Z
  • Telco Page - 100mV unbalanced Hi-Z; Intercom - Listen Mode - 300μV balanced Lo-Z (Console MIC - 1mV unbalanced Lo-Z)
• Controls
  • Front Panel - Program Selection - MIC 1, MIC 2, AUX; Level - Monitor/ Listen, Program; Distribution - All Rooms, Emergency, Press To Talk
  • Indicators - Program Talk/ Level LED
  • Rear Panel - Input Gain - MIC 1, MIC 2, AUX, Telco Page, Talk, Listen
  • Internal - Gain - Emergency Page, Supervisory Tone, Time Tone
  • Enable/Disable - MIC 1/Console MIC; MIC 2/Telco Page, Phantom Power, Supervisory Tone, MIC 1/Monitor Mute
• Tone Specifications
  • Time Tone - 750 Hz
  • Supervisory Tone - Repeating, 500 Hz
  • Call-in Tone - Repeating; oscillates between 500 Hz and 750 Hz (Switching Freq., 16 Hz)
• Power Requirements - 120V AC, 60 Hz, 100W maximum
• Dimensions - 20-1/2" W x 12" H x 11" D (with sloped top)
• Cabinet - Simulated wood grain finish
• Panels - Black with color-coded lines and instructions for Intercom, Program, Emergency Page
• Product Weight - 29 lb.
• Operating Temp. - 0-130° F
• Accessory Equipment
  • CDR1 - CD player and AM/FM Receiver
  • SCR25A - Call-in module (for switches w/o SCR)
  • SBA225 - Three-Channel (Program A, Off 0, Intercom C), 25-Station Switchbank
  • WMT1A - Line-matching transformer for telephone paging
  • TAMB2 - Telephone access module for telephone paging
  • DDU250, MBS1000A - Desktop paging microphones
  • CA10A, CA11A, CA17 - Call-in switches (2-pos., 3-pos., and push-button, respectively)
  • TWK351 - 2-Wire call-in adapter kit
  • 2518, 2520, 2522 - Connector Kits (18-, 20-, and 22-gauge respectively)
  • TL156 - Insertion Tool for connector kits

SI35A Specifications PDF

SI35A Manual