1. Introducció
The VOX VX50AG is a compact and powerful 50-watt acoustic guitar amplifier designed for clear and natural sound reproduction. Featuring a NuTube-equipped preamp, an 8-inch coaxial speaker with a tweeter, and a bass reflex structure, it delivers rich low-end and detailed highs. This amplifier includes dedicated channels for instruments and microphones, each with independent controls and effects, making it suitable for various performance and practice scenarios. This manual provides essential information for the safe and effective use of your VX50AG ampmés viu.

Imatge 1.1: Frontal view of the VOX VX50AG amplificador. El amplifier has a brown and black finish with a black speaker grille and the VOX logo.
2. Característiques
- 50 watts of output power for clear and robust sound.
- NuTube-equipped preamp for warm, tube-like tone.
- 8-inch coaxial speaker with a tweeter for full-range audio.
- Bass reflex structure enhances low-frequency response.
- Independent Instrument and Mic channels, each with dedicated volume, EQ, and effects controls.
- Phase switch on the Instrument channel to reduce feedback.
- Mic channel provides phantom power for condenser microphones.
- Comprehensive input/output jacks including Aux In, Phones Out, and Line Out.
3. Controls i connexions
3.1 Controls del panell frontal
The front panel provides access to all primary controls for both the Instrument and Mic channels, as well as master volume and effects.

Imatge 3.1: Detallada view de la amplifier's control panel, showing knobs and input jacks.
- Instrument Input (1/4" Jack): Connect your acoustic guitar or other instrument.
- Instrument Channel Controls:
- VOLUM: Adjusts the volume of the instrument channel.
- PHASE Switch: Helps reduce feedback by inverting the phase of the input signal.
- BAIX, MITJANS, AIGTS: 3-band equalizer for shaping the instrument's tone.
- EFFECTS (CHORUS, REVERB, DELAY): Select and adjust the intensity of built-in effects.
- Mic Input (XLR Jack): connecteu un micròfon.
- Mic Channel Controls:
- VOLUM: Adjusts the volume of the microphone channel.
- PHANTOM Power Switch: Activates +48V phantom power for condenser microphones.
- BAIXOS, AGUTS: 2-band equalizer for shaping the microphone's tone.
- REVERB: Adjusts the reverb effect for the microphone channel.
- MESTRE: Overall volume control for the ampmés viu.
- AUX IN (3.5mm Stereo Jack): Connect external audio devices like MP3 players.
- PHONES OUT (3.5mm Stereo Jack): Connect headphones for silent practice.
- Interruptor d'alimentació: Gira el ampmés viu encès o apagat.
3.2 Connexions del panell posterior
The rear panel houses essential power and output connections.

Imatge 3.2: posterior view of the VOX VX50AG amplifier, displaying the DC 19V input and LINE OUT jack.
- Entrada DC 19V: Connect the included AC adapter here. Use only the specified adapter.
- LINE OUT (1/4" Jack): Connect to a PA system, mixer, or recording device.
4. Configuració
- Desembalatge: Carefully remove the amplifier from its packaging. Retain all packaging materials for future transport or storage.
- Connexió d'alimentació:
- Assegureu-vos el amplifier's POWER switch is in the OFF position.
- Connect the included AC adapter to the DC 19V input on the rear panel.
- Plug the AC adapter into a suitable power outlet.
- Instrument Connection:
- Connect your acoustic guitar or other instrument to the INSTRUMENT input jack on the front panel using a standard 1/4" instrument cable.
- Connexió de micròfon:
- Connect your microphone to the MIC input jack on the front panel using an XLR cable.
- If using a condenser microphone requiring phantom power, ensure the PHANTOM power switch is set to ON. For dynamic microphones, leave it OFF.
- Encès inicial:
- Before turning on, set all VOLUME and MASTER knobs to their minimum (counter-clockwise) positions.
- Premeu l'interruptor POWER per encendre el amplifier. The power indicator will illuminate.
- Gradually increase the MASTER volume and individual channel volumes to a desired listening level.
5. Instruccions de funcionament
5.1 Adjusting Instrument Channel Sound
- Volum: Use the INSTRUMENT VOLUME knob to set the input level for your instrument. Adjust until the "CLIP" indicator flashes only occasionally during the loudest playing.
- EQ: Use the BASS, MIDDLE, and TREBLE knobs to shape the tonal characteristics of your instrument. Experiment to find the desired sound.
- Interruptor de fase: If you experience feedback, especially at higher volumes, try pressing the PHASE switch to invert the signal's phase. This can often eliminate or reduce feedback.
- Efectes: Turn the EFFECTS knob to select between CHORUS, REVERB, or DELAY. The knob also controls the intensity of the selected effect.
5.2 Adjusting Microphone Channel Sound
- Volum: Use the MIC VOLUME knob to set the input level for your microphone. Adjust until the "CLIP" indicator flashes only occasionally during the loudest vocal or instrument input.
- Poder fantasma: If your condenser microphone requires +48V phantom power, ensure the PHANTOM switch is ON. For dynamic microphones, keep it OFF.
- EQ: Use the BASS and TREBLE knobs to adjust the tonal balance of your microphone signal.
- Reverb: Use the MIC REVERB knob to add and adjust the intensity of the reverb effect to your microphone signal.
5.3 Master Volume and Outputs
- MASTER Volume: This knob controls the overall output volume of the amplifier. Adjust it to control the final loudness.
- AUX IN: Connect an external audio player to the AUX IN jack to play along with backing tracks. The volume of the auxiliary input is controlled by the external device.
- TELÈFONS SORTIDA: Connect headphones to this jack for private practice. When headphones are connected, the main speaker output is muted.
- LÍNIA OUT: Use the LINE OUT jack to send the mixed signal of both channels to an external PA system, mixer, or recording interface.
6. Manteniment
- Neteja: Netegeu el amplifier's exterior with a soft, dry cloth. Do not use abrasive cleaners, waxes, or solvents.
- Emmagatzematge: Emmagatzemar el amplificador en un lloc fresc i sec, allunyat de la llum solar directa, temperatures extremes i humitat elevada.
- Transport: When transporting the amplifier, ensure it is powered off and disconnected from all cables. Use the integrated handle for carrying.
- Ventilació: Ensure proper ventilation around the ampNo bloquegeu les obertures de ventilació.
- Cable d'alimentació: Regularly inspect the power cord for any damage. If damaged, replace it with an authorized VOX replacement.
7. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense so |
|
|
| So distorsionat |
|
|
| Retroalimentació (so udolant) |
|
|
| L'alimentació phantom no funciona |
|
|
8. Especificacions
| Característica | Detall |
|---|---|
| Potència de sortidatage | 50 watts |
| Altaveu | 8-inch coaxial speaker with tweeter |
| Preamp Tipus | NuTube-equipped |
| Canals | Instrument, Microphone |
| Instrument Channel EQ | 3-band (Bass, Middle, Treble) |
| Mic Channel EQ | 2-band (Bass, Treble) |
| Efectes | Chorus, Reverb, Delay (Instrument); Reverb (Mic) |
| Poder fantasma | +48V (Mic channel) |
| Entrades | 1/4" Instrument, XLR Mic, 3.5mm Aux In |
| Sortides | 3.5mm Phones Out, 1/4" Line Out |
| Dimensions del producte | 8.19 x 12.32 x 13.94 polzades |
| Pes de l'article | 9.02 lliures |
| Color | marró |
| Material | Fusta |

Image 8.1: Diagram showing the dimensions of the VOX VX50AG amplifier: 12.32" height, 8.19" depth, 13.94" width.
9. Informació de seguretat
Please read and follow these safety precautions to prevent damage to the product or injury to yourself and others.
- No exposeu aquesta unitat a la pluja o la humitat.
- No col·loqueu objectes plens de líquids, com ara gerros, a la unitat.
- No bloquegeu cap obertura de ventilació. Instal·leu-ho d'acord amb les instruccions del fabricant.
- No instal·leu a prop de cap font de calor com ara radiadors, registres de calor, estufes o altres aparells (inclosos amplificadors) que produeixen calor.
- Utilitzeu només accessoris/accessoris especificats pel fabricant.
- Desconnecteu aquesta unitat durant les tempestes llamps o quan no la feu servir durant llargs períodes.
- Demaneu tot el servei a personal de servei qualificat. Cal fer servei quan l'aparell s'hagi fet malbé d'alguna manera.
10. Garantia i Suport
For detailed warranty information, product registration, and technical support, please visit the official VOX website or contact your local VOX distributor. Keep your purchase receipt as proof of purchase for warranty claims.
VOX oficial Weblloc: www.voxamps.com