Introduction
This manual provides essential information for the safe and effective operation of your VOX AC30C2 2x12inch 30-watt Guitar Tube Combo Amplifier. Please read this manual thoroughly before using the amplifier to ensure proper setup, operation, and maintenance. Retain this manual for future reference.
Image: Front view of the VOX AC30C2 2x12inch 30-watt Guitar Tube Combo Amplifier. The amplifier features a black Tolex covering, a brown diamond-patterned grille cloth, and the 'VOX' logo in gold lettering.
1. Setup
Follow these steps to set up your AC30C2 amplifier safely and correctly.
- Unpacking: Carefully remove the amplifier from its packaging. Inspect for any signs of damage during transit. Keep the original packaging for potential future transport or service.
- Placement: Place the amplifier on a stable, level surface. Ensure adequate ventilation around the unit to prevent overheating. Avoid placing it near heat sources, direct sunlight, or in excessively humid environments.
- Power Connection: Ensure the amplifier's power switch is in the 'OFF' position. Connect the supplied power cable to the AC input on the rear panel and then to a grounded AC power outlet of the correct voltage.
- Instrument Connection: Connect your guitar or other instrument to one of the input jacks on the front panel using a high-quality instrument cable.
- External Speaker Connection (Optional): If using an external speaker cabinet, ensure its impedance matches the amplifier's output impedance (typically 8 or 16 ohms). Connect it to the appropriate speaker output jack on the rear panel. Do not operate the amplifier without a speaker load connected.
2. Operating Controls
The AC30C2 features a comprehensive set of controls for shaping your tone. Familiarize yourself with each function.
Image: Rear panel of the VOX AC30C2 amplifier, showing various input/output jacks and control knobs for Normal and Top Boost channels, Reverb, Tremolo, Tone Cut, and Master Volume.
Front Panel Controls
- Input Jacks (Normal/Top Boost): Two inputs for each channel (High/Low). The High input offers higher sensitivity, while the Low input is attenuated for hotter signals or cleaner tones.
- Normal Channel:
- Volume: Controls the overall output level of the Normal channel.
- Top Boost Channel:
- Volume: Controls the overall output level of the Top Boost channel.
- Treble: Adjusts the high-frequency response of the Top Boost channel.
- Bass: Adjusts the low-frequency response of the Top Boost channel.
- Reverb:
- Level: Controls the amount of reverb effect.
- Tone: Adjusts the brightness or darkness of the reverb tail.
- Tremolo:
- Speed: Controls the rate of the tremolo effect.
- Depth: Controls the intensity of the tremolo effect.
- Tone Cut: Located in the power amp section, this control allows you to reduce high frequencies, affecting the overall brightness of the amplifier.
- Master Volume: Controls the overall output volume of the entire amplifier, allowing you to achieve power amp distortion at lower listening levels.
- Standby Switch: Engages a standby mode, allowing the tubes to warm up or cool down without signal passing through. Always switch to standby before turning the power off or on.
- Power Switch: Turns the amplifier's main power on or off.
3. Maintenance
Proper maintenance ensures the longevity and optimal performance of your amplifier.
- Cleaning: Use a soft, dry cloth to clean the exterior of the amplifier. Avoid abrasive cleaners, solvents, or excessive moisture, which can damage the finish and internal components.
- Tube Replacement: Vacuum tubes have a finite lifespan and will eventually need replacement. If you notice a decrease in performance, unusual noise, or a change in tone, tubes may need to be replaced. This procedure should ideally be performed by a qualified technician due to high internal voltages. Always use recommended tube types (EL84 power tubes, 12AX7 preamp tubes).
- Speaker Care: The Celestion Greenback speakers are robust but can be damaged by excessive volume or physical impact. Avoid pushing the amplifier beyond its rated output.
- Storage: When not in use for extended periods, store the amplifier in a dry, temperature-controlled environment. Protect it from dust and physical damage.
Image: A close-up view of a Celestion G12M Greenback speaker, highlighting its design and specifications. The AC30C2 is equipped with two of these speakers.
4. Troubleshooting
If you encounter issues with your AC30C2, refer to the following common problems and solutions before seeking professional service.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound |
|
|
| Hum or Buzz |
|
|
| Distorted Sound (unwanted) |
|
|
If the problem persists after attempting these solutions, please contact qualified service personnel.
5. Specifications
- Model: AC30C2
- Output Wattage: 30 Watts RMS
- Speakers: 2 x 12-inch Celestion G12M Greenback (Ceramic)
- Tubes: EL84 (Power Amp), 12AX7 (Preamp)
- Channels: Normal, Top Boost
- Controls: Normal Volume, Top Boost Volume, Treble, Bass, Reverb Level, Reverb Tone, Tremolo Speed, Tremolo Depth, Tone Cut, Master Volume
- Effects: Reverb, Tremolo
- Dimensions (W x D x H): Approximately 32.5 x 15.7 x 26.4 inches (82.55 x 39.88 x 67.06 cm)
- Weight: Approximately 70.8 pounds (32.11 kg)
- Manufacturer: Korg USA Inc.
6. Warranty and Support
Your VOX AC30C2 amplifier is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your product for specific terms and conditions, including warranty period and registration details.
For technical support, service, or warranty claims, please contact your authorized VOX dealer or the manufacturer's customer service department. Keep your purchase receipt as proof of purchase.
