Bogen C35B 4x1 Mixer / PA Amplifier 35W

Removed from service, working and tested - the C35 is a mixer amplifier  intended for medium to large applications. The C35 is rated at 35 watts and mixes 4 inputs: 2 Mic/1 Aux and Tel, or 1 Mic/2 Aux and Tel. A second telephone input can be added to one of the Mic channels or Aux input using an accessory transformer (model WMT-1A). A front panel switch selects Mic 2 or Aux 1 input. A built-in circuit provides microphone precedence over the Aux 2 input when a customer-supplied SPST switch is actuated. Each input has its own volume control; treble and bass controls are included to adjust the tonal balance of the output. The Tel channel includes a screwdriver adjustable volume controls on the rear panel. Balanced and unbalanced outputs are provided for 4 W, 8 W, and 16 W speaker systems and for 25 volt and 70 volt constant voltage systems. Output jacks permit patching in a tape recorder or an additional booster amplifier, or feeding a 500/600 W telephone line when an accessory transformer is used. The C Series are designed with all silicon semiconductors and advanced complementary transistor circuitry to assure highest reliability. Thermal and electrical protection is built in and is designed to protect thaw amplifier against abnormal heat build-up and short circuited or overloaded outputs.

Accessories:

• WMT-1A - Telephone line-matching transformer
• RPK50 - Rack panel kit for C35/60/100, 19" x 2 spaces
• RPK535B - Rack panel kit for C10/20/10MOH/20MOH, 19"x 2 spaces
• WMK1 - In-wall mounting kit for C10/20/10MOH/20MOH

Bogen Communications C35B Features:

• 35 watts
• 4 inputs: 1 MIC (Lo-Z), 1 AUX (Hi-Z), 1 TEL, plus 1 selectable MIC or AUX
• Each input controlled by an independent volume control
• Treble and bass controls
• AUX muting by external contact closure for push-to-talk mic’s
• Tel input for telephone paging applications
• TEL input voice-activated (VOX) mute over AUX input
• Variable threshold for TEL input voice-activated AUX mute
• Audio output for tape recorder or booster amplifier
• Outputs for 4-ohm (direct), 8-ohm, and 16-ohm, 25V and 70V speaker systems (transformer coupled)
• Output jack to connect a tape recorder or booster amplifier
• Output jack to connect a general-purpose 600-ohm matching transformer (model WMT1A)
• Thermal protection and electronic shutdown
• Rack mountable with accessory mounting kit (model RPK50)
• UL and CSA listed

Bogen Communications C35B Specifications:

• Power Output (RMS): Rated 35W
• Frequency Response & Distortion:
• Transformer:70Hz - 16kHz (±2 dB) @ 1% max
• 4-Ohm Direct Output:20Hz - 20kHz (±1 dB) @ 0.5% max
• Hum and Noise:
• MIC 55 dB below rated output
• AUX 70 dB below rated output
• TEL 70 dB below rated output
• Input Sensitivity:
• MIC Lo-Z Balanced –600µV
• AUX – 85mV
• TEL –75mV
• Outputs: 8, 16 ohms, 25V, 70V transformer isolated balanced or unbalanced; 4 ohms direct unbalanced
• Output Connections: Screw terminal strip, TAPE/BOOSTER jack; WMT1A jack (requires accessory transformer)
• Input Connections: Screw terminals for MIC and TEL, two AUX Hi-Z jacks
• Controls: MIC1, MIC2/AUX (switch selected), AUX 2, BASS,TREBLE,TEL,VOX
• Tone Control: Treble, ±11 dB @ 10 kHz; Bass ±11 dB @ 100 Hz
• Power Requirements: 120V AC, 60 Hz, 148W
• Dimensions (W x H x D): 14-1/2" x 3-3/4" x 11"
• Shipping Weight: 25 lbs.

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