1. المقدمة
1.1 المنتج أكثرview
The JL AUDIO LoC-22 is a 2-channel line output converter designed to integrate aftermarket amplifiers with factory car audio systems that lack RCA pre-amp outputs. It efficiently converts high-level (speaker-level) audio signals from a factory head unit or amplifier into low-level (RCA pre-amp level) signals, making them compatible with aftermarket amplifiers. This device is essential for upgrading your car's audio system while retaining the original head unit.
1.2 معلومات السلامة
- افصل دائمًا الطرف السالب لبطارية السيارة قبل البدء في أي عملية تثبيت.
- تأكد من عزل جميع الأسلاك بشكل صحيح لمنع حدوث دوائر قصيرة.
- Mount the LoC-22 securely in a dry location, away from excessive heat or moisture.
- استشر فنيًا متخصصًا في تركيب أنظمة الصوت في السيارة إذا لم تكن متأكدًا من أي جزء من عملية التثبيت.
- Do not attempt to modify the unit. Unauthorized modifications may void the warranty and pose safety risks.
2. المميزات
- 2-Channel Speaker-Level to RCA Line Output Conversion
- التحكم في مستوى الإخراج القابل للتعديل
- Selectable Turn-On Mode (DC Offset or Signal Sensing)
- Selectable Input Load (Low Z or Normal)
- تصميم صغير الحجم ومتين
- Integrated Remote Turn-On Output for Aftermarket Ampالقاتلون
3. محتويات العبوة
- JL AUDIO LoC-22 Line Output Converter Unit
- Wiring Harnesses (for power/remote and speaker inputs)
- دليل المستخدم (هذا المستند)
4. انتهى المنتجview وتحديد المكونات
Familiarize yourself with the various components and connections of your LoC-22 unit.
Figure 4.1: JL AUDIO LoC-22 Angled View
This image provides an overall angled view of the LoC-22 unit, highlighting its compact size and the general layout of its inputs, outputs, and controls. The black metal casing is visible, along with mounting tabs on the sides.
Figure 4.2: JL AUDIO LoC-22 Top View
هذا من أعلى إلى أسفل view clearly shows the main labels and controls on the unit's surface. Key indicators include 'Input Load', 'Clipping' LED, 'Output Level' potentiometer, 'Line Outputs' (RCA jacks), and the 'Turn-on Mode' switch. The JL Audio logo and 'LoC-22 Line Output Converter' text are also prominent.
Figure 4.3: JL AUDIO LoC-22 Input Side View
This image details one side of the LoC-22, specifically showing the multi-pin terminal block for speaker-level inputs (L+, L-, R+, R-). Below the input terminal, the 'Input Load' switch is visible, offering 'Low Z (60 Ω)' and 'Normal (20 kΩ)' settings for impedance matching.
Figure 4.4: JL AUDIO LoC-22 Output Side View
هذا view displays the opposite side of the LoC-22. It features the power connector terminal block (+12V, Ground, Remote Out), the two RCA 'Line Outputs' (Left and Right), and the 'Turn-on Mode' switch, which can be set to 'DC Offset' or 'Signal' for automatic turn-on functionality.
5. الإعداد والتثبيت
5.1 التركيب
- Choose a secure, dry location within the vehicle, away from direct heat sources or moving parts.
- تأكد من التهوية الكافية حول الوحدة.
- Use appropriate screws to mount the LoC-22 to a solid surface using its integrated mounting tabs.
5.2 توصيلات الأسلاك
قبل إجراء أي توصيلات، تأكد من فصل الطرف السالب لبطارية السيارة.
- توصيل الطاقة: Connect the +12V terminal of the LoC-22 to a constant +12V power source (e.g., directly to the battery with an inline fuse, or a fused accessory wire). Connect the Ground terminal to a solid chassis ground point.
- مدخلات مستوى السماعة: Connect the speaker output wires from your factory head unit or amplifier to the LoC-22's speaker input terminal block (L+, L-, R+, R-). Ensure correct polarity.
- مخارج خط RCA: Connect standard RCA cables from the LoC-22's 'Line Outputs' to the RCA inputs of your aftermarket ampمكبر.
- Remote Turn-On Output: Connect the 'Remote Out' terminal of the LoC-22 to the remote turn-on input of your aftermarket ampمكبر الصوت. سيؤدي هذا إلى تشغيله amplifier when the LoC-22 detects an audio signal or DC offset, depending on the selected turn-on mode.
6. تعليمات التشغيل
6.1 Turn-on Mode Selection
The LoC-22 offers two methods for automatic turn-on:
- تعويض DC: Select this mode if your factory head unit or amplifier produces a DC offset on its speaker outputs when turned on. This is the most common and reliable method for many modern factory systems.
- الإشارة: Select this mode if your factory head unit or amplifier does not produce a DC offset, but instead provides an audio signal when turned on. The LoC-22 will detect the presence of an audio signal to generate the remote turn-on output.
Set the 'Turn-on Mode' switch on the unit to the appropriate setting based on your vehicle's factory system.
6.2 Input Load Selection
The 'Input Load' switch allows you to optimize the LoC-22's input impedance for compatibility with various factory audio systems:
- Normal (20 kΩ): This is the standard setting and should work with most factory systems.
- Low Z (60 Ω): Some factory systems, particularly those with advanced diagnostic features, may require a lower impedance load to prevent them from detecting an open circuit and shutting down the audio output. If you experience audio cut-outs or errors, try this setting.
Set the 'Input Load' switch on the unit to the appropriate setting. Start with 'Normal' and switch to 'Low Z' if issues arise.
6.3 ضبط مستوى الإخراج
The 'Output Level' potentiometer allows you to match the output voltage of the LoC-22 to the input sensitivity of your aftermarket amplifier. This ensures optimal signal transfer and prevents clipping.
- Turn the 'Output Level' control fully counter-clockwise (minimum).
- Turn on your car's audio system and play a dynamic piece of music at about 75% of the head unit's maximum volume.
- Slowly turn the 'Output Level' control clockwise until the 'Clipping' LED on the LoC-22 just begins to flicker. Then, back off slightly until the LED remains off.
- Adjust the gain controls on your aftermarket amplifier according to its manufacturer's instructions, ensuring no clipping occurs at the amplifier قtage.
7. الصيانة
The JL AUDIO LoC-22 is designed for reliable operation with minimal maintenance.
- Keep the unit clean and free of dust. Use a soft, dry cloth for cleaning.
- لا تستخدم كيماويات مركزة أو منظفات كاشطة.
- قم بفحص جميع توصيلات الأسلاك بشكل دوري للتأكد من أنها آمنة وخالية من التآكل.
8. استكشاف الأخطاء وإصلاحها
If you encounter issues with your LoC-22, refer to the table below for common problems and solutions.
| مشكلة | السبب المحتمل | حل |
|---|---|---|
| لا يوجد إخراج صوتي من ampمكبر. | No power to LoC-22. الأسلاك غير الصحيحة. Incorrect Turn-on Mode. | Check +12V and Ground connections. Verify all speaker input and RCA output connections. Try switching the 'Turn-on Mode' between 'DC Offset' and 'Signal'. |
| Distorted audio / Clipping LED constantly on. | Output level set too high. إشارة الإدخال قوية جدًا. | Reduce the 'Output Level' on the LoC-22. تأكد من أن حجم وحدة الرأس ليس مرتفعًا بشكل مفرط. |
| Factory head unit shuts off or displays error. | Incorrect Input Load setting. | Switch the 'Input Load' to 'Low Z (60 Ω)'. |
| Amplifier لا يعمل. | Incorrect Turn-on Mode. Remote Out wire disconnected. | Try switching the 'Turn-on Mode'. Check the connection from LoC-22 'Remote Out' to amplifier remote input. |
9. المواصفات
| ميزة | مواصفة |
|---|---|
| رقم الموديل | LoC-22 |
| عدد القنوات | 2 |
| الأبعاد (الطول × العرض × الارتفاع) | 7.77 x 11.99 x 3.12 cm (3.06 x 4.72 x 1.23 inches) |
| وزن | 370 جرام (0.82 رطل) |
| Input Load Options | Normal (20 kΩ), Low Z (60 Ω) |
| Turn-on Mode Options | DC Offset, Signal Sensing |
| رمز المنتج الموحد | 699440984133 |
10. معلومات الضمان
JL AUDIO products are engineered and manufactured to the highest quality standards. This product is covered by a limited warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region and product. Please retain your proof of purchase for warranty claims. For detailed warranty information, please refer to the warranty card included with your product or visit the official JL AUDIO webموقع.
11. دعم العملاء
For technical assistance, troubleshooting, or general inquiries regarding your JL AUDIO LoC-22, please contact JL AUDIO customer support. You can find contact information, FAQs, and additional resources on the official JL AUDIO webموقع:
When contacting support, please have your product model number (LoC-22) and a detailed description of your issue ready.
