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Silver rack-mount amplifier with front volume knobs and selector switch

Bogen Communications

Bogen Communications C20 20 W conferencing device

SKU CH-GDFJ-C80TC MPN C20

20 W public-address amplifier with dual microphone inputs, auxiliary input, and 25 V/70 V constant-voltage outputs for distributed speaker systems

  • 20 W output drives 4, 8, 16-ohm and 25/70 V speaker lines
  • Frequency response 70 Hz to 16 kHz with 70 dB signal-to-noise ratio
  • Front selector chooses two balanced mics or one mic plus auxiliary source
  • Independent volume controls and treble adjust for tonal balance
  • Includes rack panel kit and in-wall mounting kit for flexible installation

20 W PA amplifier for paging

The Bogen C20 is a 20 watt public address amplifier designed for commercial paging and background-music systems. It provides balanced and unbalanced outputs for 4-, 8-, and 16-ohm speakers as well as 25- and 70-volt constant-voltage lines. A front-panel selector routes two low-impedance microphones or one microphone plus an auxiliary source. Independent volume controls and a treble control adjust the mix.

Installers needing telephone paging

This amplifier suits installers who need a compact 20 W unit with microphone precedence and constant-voltage outputs for distributed speaker lines. The accessory WMT1A transformer adds telephone-line coupling for paging from a handset. Buyers who require more than 20 watts, built-in digital signal processing, or networked audio transport should look at larger or feature-rich platforms.

20 W RMS into constant-voltage lines

The single specification that decides fit is the 20 W RMS output rating into 25 V or 70 V speaker circuits. That power level determines how many distributed speakers can be driven on a single zone. Match the amplifier to the total tap wattage of the connected speakers to avoid overload.

Highlights

  • 20 W output drives 4, 8, 16-ohm and 25/70 V speaker lines
  • Frequency response 70 Hz to 16 kHz with 70 dB signal-to-noise ratio
  • Front selector chooses two balanced mics or one mic plus auxiliary source
  • Independent volume controls and treble adjust for tonal balance
  • Includes rack panel kit and in-wall mounting kit for flexible installation

Specifications

BrandBogen
ModelC20
Shipping weight2.27 kg
Package size254 × 254 × 254 mm

Questions about this item

What comes in the box and what must I buy separately?

The package includes the Classic C20 amplifier, a line-matching transformer, a rack panel kit and an in-wall mounting kit. Speakers, microphones and any telephone-line accessories are not included.

Should I choose the 10 W or 20 W version for a medium-sized meeting room?

The C20 delivers 20 W RMS output power, while the C10 provides 10 W. For larger spaces or higher volume needs the 20 W model is the appropriate choice.

How loud will the 20 W rating actually be with typical ceiling speakers?

At 20 W RMS into 4-, 8- or 16-ohm speakers or 25 V / 70 V constant-voltage lines the amplifier can fill a medium conference room. The 70 Hz–16 kHz response and 70 dB signal-to-noise ratio keep speech clear at normal listening levels.

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