1. 서론
Thank you for choosing the PROEL DBA1CH Active Direct Box. This manual provides essential information for the safe and efficient operation of your device. The DBA1CH is designed to convert unbalanced, high-impedance instrument signals into balanced, low-impedance signals suitable for direct connection to mixing consoles or audio interfaces, minimizing noise and signal degradation over long cable runs.
2. 안전 정보
Please read and understand all safety instructions before operating the DBA1CH. Retain this manual for future reference.
- 전원: The unit can be powered by two internal 9V batteries, a 12Vdc adapter (not included), or +48V Phantom Power from a connected mixer. Ensure the correct power source is used.
- 배터리 설치: When installing batteries, ensure correct polarity. Remove batteries if the unit will not be used for an extended period to prevent leakage.
- 환경: Do not expose the unit to rain, moisture, extreme temperatures, or direct sunlight. Operate in a dry, well-ventilated area.
- 서비스: 이 장치를 직접 수리하려고 하지 마십시오. 모든 수리는 자격을 갖춘 서비스 담당자에게 맡기십시오.
- 청소: 마른 천으로만 닦으십시오. 액체 세제나 스프레이형 세척제를 사용하지 마십시오.
3. 제품 오버view
The PROEL DBA1CH is an active direct box designed for robust performance and signal integrity.
Figure 1: Front Panel Layout of the PROEL DBA1CH Active Direct Box. This image displays the various input and output jacks, including the DBA1CH Input, Link, Unbalanced Output, and Balanced Output (XLR). It also shows the PAD and GND LIFT switches, and the power indicator LED.
3.1 전면 패널 기능
- DBA1CH Input (6.3mm Jack): Unbalanced input for connecting instruments or line-level sources.
- Link Output (6.3mm Jack): Parallel output of the input signal, typically used to feed an instrument amp리퍼.
- Unbalanced Output (6.3mm Jack): An additional unbalanced output.
- 밸런스드 출력(XLR): Balanced low-impedance output for connecting to a mixer or audio interface.
- PAD 스위치: Attenuates the input signal by +20dB to prevent clipping when connecting high-output sources.
- GND LIFT 스위치: Disconnects the ground connection between the input and output to eliminate hum and ground loops.
- 전원 표시기 LED: 장치의 전원이 켜지면 켜집니다.
4. 설정
4.1 장치 전원 공급
The DBA1CH can be powered in three ways:
- 9V 배터리: Insert two 9V batteries into the battery compartments, ensuring correct polarity. (Batteries not included).
- 12Vdc Adapter: Connect a compatible 12Vdc power adapter (not included) to the DC input jack.
- +48V 팬텀 전원: If connected to a mixer with phantom power, the unit will automatically draw power from the XLR output.
4.2 기본 연결
Follow these steps for a typical setup:
- Connect your instrument (e.g., guitar, bass, keyboard) to the DBA1CH Input using a 6.3mm mono jack cable.
- (선택 사항) 링크 출력 to your instrument amplifier if you wish to monitor your sound on stage.
- 연결하다 밸런스드 출력(XLR) to a microphone input on your mixing console or audio interface using an XLR cable.
- Ensure the mixer's phantom power is enabled for the corresponding channel if you are using phantom power.
5. 사용 설명서
5.1 PAD Switch Usage
그만큼 인주 switch is used to attenuate the input signal by +20dB. Engage this switch if you are connecting a high-output source (e.g., active bass, keyboard, or line-level output) and notice distortion or clipping at the mixer input. For most passive instruments, leave the PAD switch in the "Normal" (off) position.
5.2 GND LIFT Switch Usage
그만큼 접지 리프트 switch helps eliminate hum or buzzing noises caused by ground loops. If you hear unwanted noise in your audio signal, try engaging this switch. If the noise persists or worsens, return the switch to its original position.
6. 유지관리
- 청소: 제품 외부를 닦을 때는 부드럽고 마른 천을 사용하십시오. 연마성 세제, 용제 또는 왁스를 사용하지 마십시오.
- 배터리 교체: If using battery power, replace batteries when the power indicator LED dims or the audio signal becomes weak or distorted. Always replace both 9V batteries simultaneously.
- 저장: When not in use, store the unit in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, remove the batteries.
7. 문제 해결
| 문제 | 가능한 원인 | 해결책 |
|---|---|---|
| 소리가 출력되지 않습니다. | No power; incorrect connections; faulty cables. | Check battery power or phantom power. Verify all cables are securely connected. Test with different cables. |
| 윙윙거리는 소리 또는 웅웅거리는 소리. | 접지 루프; 케이블 불량; 간섭. | 참여하세요 접지 리프트 switch. Try different cables. Ensure power sources are properly grounded. |
| 왜곡된 소리. | Input signal too hot; faulty unit. | 참여하세요 인주 switch. Reduce the output level of the source instrument. If distortion persists, the unit may require service. |
| Power LED not illuminating. | No power; dead batteries; no phantom power. | Check battery installation and charge. Ensure phantom power is active on the mixer. Verify 12Vdc adapter connection if used. |
8. 사양
- 모델: PROEL DBA1CH
- 유형: 액티브 다이렉트 박스
- 입력: 1 x 6.3mm mono jack (unbalanced)
- 출력: 1 x 6.3mm mono jack (Link), 1 x 6.3mm mono jack (Unbalanced), 1 x XLR (Balanced)
- 통제 수단: PAD (+20dB attenuation), GND LIFT
- 전원 옵션: 2 x 9V batteries (not included), 12Vdc adapter (not included), +48V Phantom Power
- 무게: 약 250g
- 제조업체: 프로엘
9. 보증 및 지원
PROEL products are designed and manufactured to the highest quality standards. For warranty information and technical support, please refer to the warranty card included with your product or visit the official PROEL web사이트. 보증 청구에 대비해 구매 증빙 자료로 구매 영수증을 보관하세요.
For further assistance, please contact PROEL customer service or your authorized dealer.
