The Bogen CHS100B is a 100-watt public address amplifier designed for commercial sound applications. It provides a robust solution for expanding existing audio systems or for new installations requiring reliable audio amplification for paging, background music, and general-purpose sound reinforcement. The amplifier features a durable construction and straightforward installation, making it suitable for various professional environments.
### Technical Specifications
* **Power Output:** 100 watts
* **Peak Power:** 200 watts
* **Frequency Response:**
* 40 Hz to 20,000 Hz ±2 dB
* 70 Hz to 12 kHz ±2 dB
* **Total Harmonic Distortion (THD):** Less than 5% at rated output
* **Sensitivity:**
* Hi-Z Microphone: 4 mV, 3 mV
* Lo-Z Microphone: 0.3 mV
* Auxiliary: 0.3 Volt, 0.15V
* Bridging: 1 Volt
* **Hum and Noise (below rated output):**
* Microphone Input: 65 dB, -65dB
* Auxiliary Input: 70 dB, -70dB, 80dB
* **Inputs:**
* 2 x Microphone Inputs: Selectable high (100 K ohms) or low (200 ohms) impedance. Low-impedance balanced microphone inputs are standard; can be converted for high-impedance use via internal jumpers. Phantom power is provided for condenser microphones.
* 2 x Auxiliary Inputs: High-level, high-impedance inputs suitable for tuners, tape players, or ceramic cartridge phonographs. An input signal of 0.15 volts is required for full output.
* Bridging Input: High-impedance input for signals from units with their own volume control, such as preamplifiers or tape recorders. Master volume control does not affect the bridging output level.
* **Outputs:**
* Speaker Outputs: 2, 8, and 16 ohms.
* Constant Voltage Outputs: 25V (center-tapped) and 70V.
* 70V Output Impedances: 49 ohms, 140 ohms
* 25V Output Impedances: 6.25 ohms, 10.4 ohms, 2.6A
* Tape/Booster Output: 10K ohms at 5V, 5V at 10k ohms. This output can feed a tape recorder or booster amplifier.
* Bridging Output: High-impedance output at 0.5V.
* **Controls:**
* 2 x Microphone Volume Controls
* 1 x Auxiliary Volume Control (fader for two inputs)
* Master Volume Control
* Bass Tone Control
* Treble Tone Control
* Power Switch with Indicator
* **Tone Control Action:**
* Treble: ±11 dB to -12 dB at 10 kHz
* Bass: +10 dB to -10 dB at 50 Hz
* **Microphone Precedence:** Built-in circuit provides precedence at MIC 1 over MIC 2 and AUX channels. Actuated by an external, normally-open switch.
* **Remote Volume Control:** Optional accessories (e.g., Bogen LVP-1, RVC-1) allow remote volume adjustment up to 2,000 feet.
* **Circuit Protection:** 1.75-ampere circuit breaker protects against overloads.
### Electrical
* **Power Consumption:** 300 watts (Note: One source lists 150 watts for the CHS100, which might refer to a different variant or a typo)
* **Power Source:** 120V AC, 60 Hz
* **AC Line Cord:** Terminated in a three-prong plug for grounded outlet connection. Use of an adapter is recommended if a three-wire outlet is unavailable.
### Interfaces
* **Microphone Inputs:** Cannon XLR-312-C or Bogen CON-2 connectors.
* **Auxiliary Inputs:** RCA phono jacks.
* **Speaker Outputs:** Two quick-disconnect plugs and screw terminals.
* **Tape/Booster Output:** Standard phono plug.
* **Bridging Receptacle:** Rear panel jack.
* **Accessory Port:** Preamp Accessory socket for optional add-on preamplifiers like the PMA-2.
### Physical
* **Dimensions:** Not explicitly stated for CHS100B in available documentation. (For comparison, the CHB100 is 15-3/4″ wide, 6-3/4″ high, 10″ deep).
* **Weight:** 16 lbs (7.26 kg)
* **Construction:** Rugged design for durability.
### Compatibility and Accessories
* **Microphones:** Compatible with both low-impedance balanced and high-impedance microphones.
* **Telephone Line Input:** Requires Bogen WMT-1 line-matching transformer for connection to a 500/600 ohm telephone line.
* **Optional Accessories:**
* PMA-2 Add-On Preamplifier: Provides two additional microphone channels.
* WMT-1 Line-Matching Transformer: For telephone line input/output.
* Remote Volume Control accessories (e.g., LVP-1, RVC-1, RVC-2B).
* Reverb units and acoustic equalizer filters can be connected via IN/OUT receptacles.
Why Choose Aumictech for the Bogen CHS100B?
At Aumictech, we specialize in supplying high-end commercial audio equipment. Whether you need a robust 100-watt power amplifier for a large venue, a reliable solution for expanding your existing sound system, or a cost-effective option for new installations, our team ensures the Bogen CHS100B delivers maximum performance and durability for your specific application.
