Introduction
This manual provides essential information for the proper installation, operation, and maintenance of your JBL Professional Control 28-1L High-Output 8-Ohm Indoor/Outdoor Background/Foreground Speaker. Designed for versatile applications, these speakers deliver high-quality audio in various environments, from residential patios to commercial venues. Please read this manual thoroughly before use to ensure optimal performance and longevity of your speakers.
Figure 1: JBL Professional Control 28-1L Speakers (Pair)
Маанилүү коопсуздук маалыматы
- Көрсөтмөлөрдү окуу: Келечекте маалымдоо үчүн бул нускамаларды сактаңыз.
- Эскертүүлөргө кулак сал: Буюмдагы жана колдонуу нускамасындагы бардык эскертүүлөрдү аткарыңыз.
- Суу жана ным: Do not use this apparatus near water. While weather-resistant, direct exposure to heavy rain or submersion should be avoided.
- Тазалоо: Кургак чүпүрөк менен гана тазалаңыз.
- Вентиляция: Эч кандай желдетүүчү тешиктерди жаап албаңыз. Өндүрүүчүнүн көрсөтмөлөрүнө ылайык орнотуу.
- Жылуулук: Радиаторлор, жылуулук регистрлери, мештер же башка аппараттар (анын ичинде) сыяктуу жылуулук булактарынын жанына орнотпоңуз ampкөтөргүчтөр) жылуулукту пайда кылуучу.
- Монтаждоо: Use only with mounting hardware specified by the manufacturer. Ensure mounting surfaces are structurally sound to support the speaker's weight.
- Тейлөө: Бардык тейлөөлөрдү квалификациялуу тейлөө кызматкерлерине тапшырыңыз. Аппарат кандайдыр бир зыянга учураганда, мисалы, кубат берүүчү шнур же сайгыч бузулганда, суюктук төгүлгөндө же аппараттын ичине нерселер түшкөндө, аппарат жамгырга же нымдуулукка дуушар болгондо, нормалдуу иштебей калганда тейлөө талап кылынат. , же түшүрүлгөн.
Кутуда эмне бар
Each JBL Professional Control 28-1L speaker package includes:
- Control 28-1L Speaker (Sold as a Pair)
- Built-in InvisiBall Mounting Hardware
Note: U-brackets for mounting are sold separately.
Орнотуу жана орнотуу
Монтаждоо
The Control 28-1L speakers feature built-in InvisiBall mounting hardware for secure and flexible placement. This system allows for vertical and horizontal rotation, making precise aiming straightforward. An optional U-bracket (sold separately) can also be used for alternative mounting configurations.
These speakers can be mounted to a wall, ceiling, or post. Always ensure the chosen mounting surface is capable of supporting the speaker's weight and that all fasteners are securely tightened to prevent accidental detachment.
Figure 2: Single JBL Control 28-1L Speaker
Зымдар
The Control 28-1L is an 8-ohm (low-impedance) speaker, ideal for smaller system applications and shorter cable runs. Connect the speaker to a compatible amplifier using appropriate gauge speaker wire. Ensure correct polarity (+ to + and - to -) for optimal sound reproduction.
- Импеданс: 8 Ом
- Кубат менен иштөө: 120 Watts (continuous program), 240 Watts (peak program)
For larger systems requiring 70V/100V constant voltage, refer to the Control 28-1 model, which includes a multi-tap transformer.
Операция
Динамикти жайгаштыруу
The Control 28-1L speakers are designed for broad coverage (100° x 100°), making them suitable for various indoor and outdoor settings. For optimal sound distribution, consider the acoustics of your space and aim the speakers to cover the desired listening area. Their weather-resistant design allows for flexible placement in environments where exposure to elements is a factor.
Спикерлерге күч берүү
Динамиктерди а amplifier capable of delivering sufficient power without exceeding the speaker's rated power handling. The Control 28-1L can handle 120 watts of continuous program power (240 watts peak) at 8 ohms. Using an amplifier with adequate headroom is recommended to prevent clipping and potential speaker damage.
Техникалык тейлөө
The JBL Professional Control 28-1L speakers are built with weather-resistant components and enclosures, making them durable for both indoor and outdoor use. To maintain their appearance and performance:
- Тазалоо: Динамиктин корпустарын мезгил-мезгили менен жумшак, d менен сүртүп туруңузamp чаңды жана кирди тазалоо үчүн кездеме. Катуу химиялык заттарды же абразивдүү тазалагычтарды колдонуудан алыс болуңуз.
- Текшерүү: Regularly inspect mounting hardware for any signs of loosening or corrosion, especially in outdoor installations. Tighten as necessary.
- Экологиялык эске алуулар: While weather-resistant, prolonged exposure to extreme conditions (e.g., direct saltwater spray, extreme temperatures) may accelerate wear. Consider protective covers if speakers are in highly exposed areas during off-season periods.
Проблемаларды чечүү
If you experience issues with your JBL Professional Control 28-1L speakers, refer to the following common troubleshooting steps:
- Үн жок:
- Бардык кабелдик туташууларды текшериңиз amplifier to the speakers. Ensure they are secure and correctly wired (positive to positive, negative to negative).
- Текшериңиз amplifier is powered on and functioning correctly. Test with another known-good speaker if possible.
- Check the audio source (e.g., mixer, media player) to ensure it is sending a signal.
- Бурмаланган үн:
- Үн деңгээлин азайтыңыз amplifier and audio source. Distortion often occurs when the ampкөтөргүч ашыкча иштетилген (кесип).
- камсыз кылуу amplifier's impedance matches the speaker's 8-ohm rating.
- Динамик конустарында көрүнгөн бузулуулар бар-жогун текшериңиз.
- Үзүлгүс үн:
- Check for loose or corroded wire connections at both the speaker and ampөмүр терминалдары.
- Ensure speaker wire is not damaged or pinched.
If these steps do not resolve the issue, please contact JBL Professional customer support or a qualified service technician.
Техникалык шарттар
Detailed technical specifications for the JBL Professional Control 28-1L speaker are provided below. For comprehensive diagrams and performance graphs, please refer to the official spec sheets.
| Модель аты | БАШКАРУУ 28-1л |
| Динамик түрү | Спутник |
| Монтаж түрү | Дубалга орнотуу, шыпка орнотуу |
| Вуфердин диаметри | 8 дюйм |
| Tweeter диаметри | 1 дюйм |
| Импеданс | 8 Ом |
| Ватtage (Program) | 240 Ватт |
| Frequency Response | 45 Гц – 20 кГц |
| Камтуу бурч | 100° x 100° |
| Продукциянын өлчөмдөрү | 8.6"D x 11.1"W x 15.2"H |
| Элемент Салмагы | 16.6 фунт |
| Түс | Кара |
| Аба ырайына каршылык | True (Water Resistant) |
Detailed Spec Sheets
For in-depth technical data, including frequency response graphs and mounting dimensions, please refer to the following official spec sheet pages:
Spec Sheet Page 1
Spec Sheet Page 2
Spec Sheet Page 3
Кепилдик маалымат
JBL Professional Control 28-1L speakers come with a limited warranty. The specific terms and duration of the warranty may vary by region and retailer. Please retain your proof of purchase for warranty claims.
For detailed warranty information, including coverage, limitations, and the process for making a claim, please visit the official JBL Professional website or contact your authorized JBL dealer.
Кардарларды колдоо
For technical assistance, product inquiries, or service requests, please contact JBL Professional customer support through their official channels:
- JBL Professional Webсайт: pro.harman.com
- Байланыш маалыматы: Refer to the 'Support' or 'Contact Us' section on the JBL Professional website for phone numbers, email addresses, and service center locations in your region.
When contacting support, please have your product model (Control 28-1L) and serial number ready.
