1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Bogen C100 Classic Series 100W Amplifier. Please read this manual thoroughly before operating the unit to ensure proper use and to prevent damage.
The Bogen C100 is a 100-watt amplifier designed for commercial and industrial sound applications, featuring multiple inputs and robust performance.
2. Important Safety Instructions
WARNING: To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.
- Read these instructions.
- Keep these instructions.
- Heed all warnings.
- Follow all instructions.
- Do not use this apparatus near water.
- Clean only with a dry cloth.
- Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
- Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
- Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
- Only use attachments/accessories specified by the manufacturer.
- Unplug this apparatus during lightning storms or when unused for long periods of time.
- Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
3. Product Overview
The Bogen C100 amplifier features a robust design with intuitive controls for various audio inputs and output configurations. Below are images illustrating the amplifier's key components and features.
Figure 3.1: Front View of Bogen C100 Amplifier. This image displays the front panel of the Bogen C100 amplifier, showing the input level controls for MIC 1, MIC 2, AUX 1, and AUX 2, along with Treble and Bass tone controls, and the main Power switch. The "Classic Series" and "C-100" model designation are also visible.
Figure 3.2: Side View of Bogen C100 Amplifier. This image shows the side profile of the Bogen C100 amplifier, highlighting the ventilation grilles and the integrated power cord. The heat sink fins are visible on the left side.
Figure 3.3: Rear View of Bogen C100 Amplifier. This image provides a view of the rear panel, detailing the various input and output terminals, including screw terminals for speakers, RCA inputs for auxiliary devices, and microphone inputs. The power cord and a large heat sink are also prominent.
Figure 3.4: Detail of Rear Panel. A close-up of the rear panel, showing the "MODEL C100 OUTPUT RATING 100W" label, along with the 2.5A HOLD fuse reset button and Intertek ETL US certification mark. Various input/output connections are also visible.
Figure 3.5: Power Switch Detail. This image focuses on the red power switch and the "POWER" indicator on the front panel, next to the "C-100" model designation and "BOGEN" brand logo.
Figure 3.6: Product Packaging and Key Features. The product box highlighting key features: 100 watts output, 4 inputs (1 MIC, 1 AUX, 1 TEL, 1 MIC/AUX), MIC precedence circuit, and telephone paging input. The UPC 0765368330090 is also visible.
Figure 3.7: Internal Product Label. A label showing internal product identifiers such as "NO-Q1", "BOGEN C100", "19LB(I)", and a barcode with the number 0776852 (likely a part or serial number).
3.1 Front Panel Controls
- MIC 1, MIC 2, AUX 1, AUX 2 Level Controls: Rotary knobs to adjust the volume for each input channel.
- TREBLE Control: Adjusts the high-frequency response.
- BASS Control: Adjusts the low-frequency response.
- POWER Switch: Toggles the amplifier on and off.
3.2 Rear Panel Connections
- Speaker Outputs: Screw terminals for connecting speakers (e.g., 4-ohm, 8-ohm, 25V, 70V).
- Microphone Inputs: Connect dynamic microphones to the MIC 1 or MIC 2 inputs.
- Auxiliary Inputs: RCA jacks for connecting line-level audio sources (e.g., CD players, tuners).
- Telephone Paging Input: Dedicated input for telephone system integration.
- AC Power Inlet: For connecting the main power cord.
- Fuse Reset Button: A red button to reset the internal fuse if an overload occurs.
4. Setup and Installation
4.1 Unpacking
Carefully remove the amplifier from its packaging. Retain all packing materials for future transport or storage. Inspect the unit for any signs of damage. If damage is found, contact your dealer immediately.
4.2 Placement
Place the amplifier on a stable, flat surface. Ensure adequate ventilation around the unit to prevent overheating. Do not block the ventilation grilles on the top, sides, or rear of the amplifier. Avoid placing the amplifier near heat sources or in direct sunlight.
4.3 Connecting Speakers
The C100 amplifier supports various speaker configurations. Identify the impedance or voltage requirements of your speakers and connect them to the appropriate terminals on the rear panel.
- Determine Speaker Type: Identify if your speakers are low-impedance (4-ohm, 8-ohm) or constant voltage (25V, 70V).
- Wire Preparation: Strip approximately 1/2 inch of insulation from the speaker wires.
- Connection:
- For 4-ohm speakers, connect to the "4 OHM" and "COM" terminals.
- For 8-ohm speakers, connect to the "8 OHM" and "COM" terminals.
- For 25V constant voltage speakers, connect to the "25V" and "COM" terminals.
- For 70V constant voltage speakers, connect to the "70V" and "COM" terminals.
- Ensure all connections are secure and that there are no stray wire strands that could cause a short circuit.
4.4 Connecting Audio Sources
Connect your audio sources to the appropriate input jacks on the rear panel.
- Microphones: Connect dynamic microphones to the MIC 1 or MIC 2 inputs.
- Auxiliary Devices: Connect line-level sources such as CD players, tuners, or media players to the AUX 1 or AUX 2 RCA inputs.
- Telephone Paging: Connect your telephone system's paging output to the dedicated telephone input.
4.5 Power Connection
Once all audio and speaker connections are made, plug the amplifier's power cord into a standard AC outlet (120V AC, 60Hz).
5. Operating Instructions
5.1 Powering On/Off
Press the red POWER switch on the front panel to turn the amplifier ON. The switch will illuminate when the unit is powered. Press it again to turn the amplifier OFF.
5.2 Adjusting Input Levels
Use the individual rotary level controls (MIC 1, MIC 2, AUX 1, AUX 2) on the front panel to adjust the volume of each connected audio source. Start with the controls at a low setting and gradually increase them to achieve the desired balance.
5.3 Tone Controls
- TREBLE: Rotate the TREBLE knob to adjust the high-frequency response of the audio. Turn clockwise to boost treble, counter-clockwise to cut.
- BASS: Rotate the BASS knob to adjust the low-frequency response of the audio. Turn clockwise to boost bass, counter-clockwise to cut.
Adjust these controls to suit your listening preference and the acoustics of the environment.
5.4 Microphone Precedence
The C100 amplifier features a microphone precedence circuit. When a signal is detected on the designated microphone input (typically MIC 1), it will automatically attenuate other audio sources, allowing the microphone signal to be heard clearly. This is particularly useful for paging or announcements.
6. Maintenance
6.1 Cleaning
To clean the amplifier, disconnect it from the power outlet. Use a soft, dry cloth to wipe down the exterior surfaces. Do not use liquid cleaners, aerosols, or solvents, as these can damage the finish or internal components.
6.2 Ventilation
Regularly check that the ventilation grilles are free from dust and obstructions. Proper airflow is crucial for preventing overheating and ensuring the longevity of the amplifier.
6.3 Fuse Reset
If the amplifier unexpectedly loses power, check the red fuse reset button on the rear panel (Figure 3.4). If it has popped out, press it firmly to reset the internal fuse. If the fuse repeatedly trips, disconnect the amplifier and consult qualified service personnel.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power |
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| No sound output |
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| Distorted sound |
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| Overheating |
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8. Specifications
| Model | C100 |
| Output Power | 100 Watts |
| Number of Channels | 4 (1 MIC, 1 AUX, 1 TEL, 1 MIC/AUX) |
| Product Dimensions (L x W x H) | 22 x 17.25 x 10.5 inches |
| Weight | 19.5 Pounds |
| Mounting Type | Freestanding |
| Manufacturer | BOGEN |
| UPC | 0765368330090 |
9. Warranty and Support
Bogen products are designed for reliability and performance. For specific warranty information, please refer to the warranty card included with your product or visit the official Bogen website. For technical support or service inquiries, please contact Bogen customer service or your authorized dealer.
Keep your purchase receipt as proof of purchase for warranty claims.
