1. المقدمة
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. معلومات السلامة
Please read and understand all safety instructions before operating the DBA1CH. Retain this manual for future reference.
- مصدر الطاقة: 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.
- تركيب البطارية: When installing batteries, ensure correct polarity. Remove batteries if the unit will not be used for an extended period to prevent leakage.
- بيئة: Do not expose the unit to rain, moisture, extreme temperatures, or direct sunlight. Operate in a dry, well-ventilated area.
- الخدمة: لا تحاول صيانة هذه الوحدة بنفسك. أحل جميع أعمال الصيانة إلى فني صيانة مؤهل.
- تنظيف: نظف بقطعة قماش جافة فقط. لا تستخدم المنظفات السائلة أو البخاخات.
3. انتهى المنتجview
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 ميزات اللوحة الأمامية
- 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 ampمكبر.
- Unbalanced Output (6.3mm Jack): An additional unbalanced output.
- مخرج متوازن (XLR): Balanced low-impedance output for connecting to a mixer or audio interface.
- تبديل PAD: Attenuates the input signal by +20dB to prevent clipping when connecting high-output sources.
- مفتاح رفع الأرضي: Disconnects the ground connection between the input and output to eliminate hum and ground loops.
- مؤشر الطاقة LED: يضيء عند تشغيل الوحدة.
4. الإعداد
4.1 تشغيل الوحدة
The DBA1CH can be powered in three ways:
- بطاريات 9 فولت: 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.
- +48 فولت الطاقة الوهمية: If connected to a mixer with phantom power, the unit will automatically draw power from the XLR output.
4.2 الاتصال الأساسي
Follow these steps for a typical setup:
- قم بتوصيل آلتك الموسيقية (مثل الجيتار، أو الباس، أو الكيبورد) بـ DBA1CH Input using a 6.3mm mono jack cable.
- (اختياري) قم بتوصيل إخراج الارتباط to your instrument amplifier if you wish to monitor your sound on stage.
- قم بتوصيل Balanced Output (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. تعليمات التشغيل
5.1 PAD Switch Usage
ال وسادة 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
ال رفع أرضي 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. الصيانة
- تنظيف: استخدم قطعة قماش ناعمة وجافة لتنظيف الجزء الخارجي من الجهاز. لا تستخدم المنظفات الكاشطة أو المذيبات أو الشمع.
- استبدال البطارية: 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.
- تخزين: 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. استكشاف الأخطاء وإصلاحها
| مشكلة | السبب المحتمل | حل |
|---|---|---|
| لا يوجد إخراج صوت. | No power; incorrect connections; faulty cables. | Check battery power or phantom power. Verify all cables are securely connected. Test with different cables. |
| صوت طنين أو أزيز. | حلقة أرضية؛ كابل معيب؛ تداخل. | انخرط في رفع أرضي switch. Try different cables. Ensure power sources are properly grounded. |
| صوت مشوه. | Input signal too hot; faulty unit. | انخرط في وسادة 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. المواصفات
- نموذج: PROEL DBA1CH
- يكتب: صندوق مباشر نشط
- المدخلات: 1 x 6.3mm mono jack (unbalanced)
- المخرجات: 1 x 6.3mm mono jack (Link), 1 x 6.3mm mono jack (Unbalanced), 1 x XLR (Balanced)
- عناصر التحكم: PAD (+20dB attenuation), GND LIFT
- خيارات الطاقة: 2 x 9V batteries (not included), 12Vdc adapter (not included), +48V Phantom Power
- وزن: حوالي 250 جرام
- الشركة المصنعة: برويل
9. الضمان والدعم
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 webالموقع. احتفظ بإيصال الشراء الخاص بك كإثبات للشراء في حالة وجود أي مطالبات بالضمان.
For further assistance, please contact PROEL customer service or your authorized dealer.
