1. ບົດແນະນຳ
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. ຂໍ້ມູນຄວາມປອດໄພ
Please read and understand all safety instructions before operating the DBA1CH. Retain this manual for future reference.
- ແຫຼ່ງພະລັງງານ: 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.
- ການຕິດຕັ້ງຫມໍ້ໄຟ: When installing batteries, ensure correct polarity. Remove batteries if the unit will not be used for an extended period to prevent leakage.
- ສະພາບແວດລ້ອມ: Do not expose the unit to rain, moisture, extreme temperatures, or direct sunlight. Operate in a dry, well-ventilated area.
- ການບໍລິການ: ຢ່າພະຍາຍາມໃຫ້ບໍລິການຫນ່ວຍນີ້ດ້ວຍຕົວທ່ານເອງ. ອ້າງອີງການບໍລິການທັງໝົດໃຫ້ກັບພະນັກງານບໍລິການທີ່ມີຄຸນວຸດທິ.
- ທໍາຄວາມສະອາດ: ເຊັດໃຫ້ສະອາດດ້ວຍຜ້າແຫ້ງເທົ່ານັ້ນ. ຢ່າໃຊ້ນໍ້າຢາລ້າງ ຫຼື ນໍ້າຢາສີດ.
3. ຜະລິດຕະພັນເກີນview
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 ຄຸນສົມບັດແຜງໜ້າ
- 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 ampມີຊີວິດຊີວາ.
- Unbalanced Output (6.3mm Jack): An additional unbalanced output.
- Balanced Output (XLR): Balanced low-impedance output for connecting to a mixer or audio interface.
- PAD Switch: Attenuates the input signal by +20dB to prevent clipping when connecting high-output sources.
- GND LIFT Switch: Disconnects the ground connection between the input and output to eliminate hum and ground loops.
- ຕົວຊີ້ວັດພະລັງງານ LED: ສ່ອງແສງເມື່ອໜ່ວຍເປີດຢູ່.
4. ຕັ້ງຄ່າ
4.1 ການສ້າງພະລັງງານຫນ່ວຍງານ
The DBA1CH can be powered in three ways:
- ຫມໍ້ໄຟ 9V: 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.
- ພະລັງງານ +48V Phantom: If connected to a mixer with phantom power, the unit will automatically draw power from the XLR output.
4.2 ການເຊື່ອມຕໍ່ພື້ນຖານ
Follow these steps for a typical setup:
- ເຊື່ອມຕໍ່ເຄື່ອງດົນຕີຂອງທ່ານ (ເຊັ່ນ: ກີຕ້າ, ເບສ, ຄີບອດ) ເຂົ້າກັບ DBA1CH Input using a 6.3mm mono jack cable.
- (ທາງເລືອກ) ເຊື່ອມຕໍ່ ຜົນໄດ້ຮັບການເຊື່ອມຕໍ່ to your instrument amplifier if you wish to monitor your sound on stage.
- ເຊື່ອມຕໍ່ ຜົນຜະລິດທີ່ສົມດຸນ (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. ຄໍາແນະນໍາການດໍາເນີນງານ
5.1 PAD Switch Usage
ໄດ້ ປ້າ 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
ໄດ້ GND LIFT 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. ບໍາລຸງຮັກສາ
- ທໍາຄວາມສະອາດ: ໃຊ້ຜ້າອ່ອນແລະແຫ້ງເພື່ອທຳຄວາມສະອາດດ້ານນອກຂອງຕົວເຄື່ອງ. ຢ່າໃຊ້ນ້ຳຢາທຳຄວາມສະອາດທີ່ມີສານຂັດ, ຕົວລະລາຍ ຫຼື ຂີ້ເຜີ້ງ.
- ການປ່ຽນແບັດເຕີຣີ: 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.
- ການເກັບຮັກສາ: 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. ການແກ້ໄຂບັນຫາ
| ບັນຫາ | ສາເຫດທີ່ເປັນໄປໄດ້ | ການແກ້ໄຂ |
|---|---|---|
| ບໍ່ມີສຽງອອກ. | No power; incorrect connections; faulty cables. | Check battery power or phantom power. Verify all cables are securely connected. Test with different cables. |
| ສຽງຮືມ ຫຼື ສຽງຫວີດ. | ວົງແຫວນດິນ; ສາຍໄຟທີ່ມີບັນຫາ; ການລົບກວນ. | ມີສ່ວນຮ່ວມ GND LIFT switch. Try different cables. Ensure power sources are properly grounded. |
| ສຽງບິດເບືອນ. | Input signal too hot; faulty unit. | ມີສ່ວນຮ່ວມ ປ້າ 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. ຂໍ້ມູນຈໍາເພາະ
- ຕົວແບບ: PROEL DBA1CH
- ປະເພດ: ກ່ອງ Direct Active
- ວັດສະດຸປ້ອນ: 1 x 6.3mm mono jack (unbalanced)
- ຜົນໄດ້ຮັບ: 1 x 6.3mm mono jack (Link), 1 x 6.3mm mono jack (Unbalanced), 1 x XLR (Balanced)
- ການຄວບຄຸມ: PAD (+20dB attenuation), GND LIFT
- ຕົວເລືອກພະລັງງານ: 2 x 9V batteries (not included), 12Vdc adapter (not included), +48V Phantom Power
- ນ້ຳໜັກ: ປະມານ 250 g
- ຜູ້ຜະລິດ: PROEL
9. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ
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 webເວັບໄຊ. ຮັກສາໃບຮັບເງິນການຊື້ຂອງທ່ານໄວ້ເປັນຫຼັກຖານການຊື້ສໍາລັບການຮຽກຮ້ອງການຮັບປະກັນໃດໆ.
For further assistance, please contact PROEL customer service or your authorized dealer.
