1. Introdução
The Behringer EURORACK UB502 is an ultra-low noise, 5-input, 2-bus mixer designed for various audio applications. It features a compact design with high-quality components to ensure transparent audio performance. This manual provides essential information for setting up, operating, and maintaining your mixer.
Principais características:
- Ultra-low noise design for highest possible headroom and ultra-transparent audio.
- State-of-the-art, IMP "Invisible" Mic Preamp with 130 dB dynamic range for 24-bit, 192 kHz sampling rate inputs.
- Effective, extremely musical 2-band EQ and clip LED on mono channel.
- 5 balanced high-headroom line inputs.
- Main mix outputs plus separate headphone and 2-track output.
2. Configuração
Proper setup ensures optimal performance and longevity of your UB502 mixer. Follow these steps to connect your device.
2.1 Conexão de Energia
Connect the provided power supply to the 'AC POWER IN' port on the rear panel of the mixer. Ensure the power supply is securely connected before plugging it into a power outlet. The mixer does not feature a separate power switch; it powers on automatically when connected to the power supply.

2.2 Conexões de Entrada
The UB502 offers various input options for different audio sources:
- Entrada de microfone (MIC): Connect a microphone using an XLR cable to the 'MIC' input. This input features an IMP "Invisible" Mic Preamp.
- Line Inputs (LINE IN): Connect line-level devices such as instruments or playback devices using 1/4" TRS or TS cables to the 'LINE IN' jacks. Channels 2/3 and 4/5 are stereo paired.
- 2-Track Input (2-TR IN): Use RCA cables to connect a stereo playback device (e.g., CD player, tape deck) to the '2-TR IN' ports.
2.3 Conexões de Saída
The mixer provides several output options:
- Main Mix Output (MAIN OUT): Conecte suas caixas de som principais ou amplifier using 1/4" TRS or TS cables to the 'MAIN OUT' jacks (L/R).
- Saída para fones de ouvido (PHONES): Connect headphones to the 1/4" TRS 'PHONES' jack for monitoring.
- 2-Track Output (2-TR OUT): Use RCA cables to connect a recording device to the '2-TR OUT' ports.

3. Operando o Mixer
Understanding the controls is key to effectively using your UB502 mixer.
3.1 Controles de Canal
Each input channel (Mic/Line 1, Line 2/3, Line 4/5) features dedicated controls:
- GANHO: Adjusts the input sensitivity for the connected device. Use this to achieve a healthy signal level without clipping.
- EQ (Equalizador): The mono channel (Mic/Line 1) has a 2-band EQ (HIGH and LOW) to shape the tone of the input signal.
- PAN/BAL: The PAN control (mono channel) adjusts the signal's position in the stereo field (left to right). The BAL (balance) control (stereo channels) adjusts the relative level of the left and right signals.
- NÍVEL: Controls the overall output level of the individual channel to the main mix.
- LED CLIPE: Acende quando o sinal de entrada está muito alto, indicando possível distorção. Reduza o GANHO se este LED acender com frequência.
3.2 Controles da Seção Principal
The main section manages the overall output and monitoring:
- MIXAGEM PRINCIPAL: Controla o volume geral da saída estéreo principal.
- TELEFONES: Ajusta o volume da saída de fone de ouvido.
- 2-TR TO MIX: Routes the 2-Track input signal to the main mix.
- 2-TR TO PHONES: Routes the 2-Track input signal to the headphone output for monitoring.
- MEDIDORES DE NÍVEL: LED indicators display the output level of the main mix, helping to prevent clipping.

4. Manutenção
To ensure the longevity and optimal performance of your Behringer EURORACK UB502 mixer, follow these maintenance guidelines:
- Limpeza: Regularly wipe the mixer's surface with a soft, dry cloth. Avoid using abrasive cleaners, solvents, or waxes, as these can damage the finish and controls.
- Proteção contra poeira: Keep the mixer covered when not in use to prevent dust accumulation, which can affect faders and potentiometers.
- Condições ambientais: Operate and store the mixer in a dry environment, away from extreme temperatures, direct sunlight, and high humidity.
- Gerenciamento de cabos: Ensure all cables are neatly organized and not under tension to prevent damage to the connectors and the mixer's ports.
5. Solução De Problemas
If you encounter issues with your UB502 mixer, refer to the following common problems and solutions:
- Sem saída de som:
- Check all power connections and ensure the mixer is receiving power.
- Verifique se todos os cabos de entrada e saída estão firmemente conectados.
- Ensure channel LEVEL and MAIN MIX controls are turned up.
- Check the volume levels on connected amplificadores ou alto-falantes ativos.
- If using headphones, ensure the PHONES control is adjusted.
- Som distorcido:
- Reduce the GAIN control for the affected channel if the CLIP LED is frequently lighting up.
- Ensure the input source is not sending an excessively hot signal.
- Check for damaged cables or faulty connectors.
- Zumbido ou ruído:
- Ensure all connections are balanced (XLR or TRS) where possible to minimize interference.
- Check for ground loops by ensuring all equipment is plugged into the same power strip or outlet.
- Mantenha os cabos de áudio afastados dos cabos de energia.
6. Especificações
| Recurso | Especificação |
|---|---|
| Marca | Behringer |
| Número do modelo | UB502 |
| Peso do item | 2.54 libras (1.15 kg) |
| Dimensões do produto | 6.97 x 5.28 x 1.85 polegadas (17.7 x 13.4 x 4.7 cm) |
| Número de canais | 5 |
| Tecnologia de Conectividade | USB |
| Fonte de energia | Battery Powered (Note: Product description states 'Battery Powered', but typical mixers of this type use an AC adapter. Please refer to product packaging for definitive power requirements.) |
| Data da primeira disponibilidade | 2 de outubro de 2001 |
7. Garantia e Suporte
Behringer products are designed for reliability and performance. For detailed warranty information and technical support, please refer to the official Behringer webou entre em contato diretamente com o serviço de atendimento ao cliente. Guarde o comprovante de compra como prova para eventuais solicitações de garantia.
Para obter mais assistência, visite o Loja Behringer na Amazon ou seu oficial website.