JBL Professional CSM-28 Commercial Series 8-input, 2-output Audio Mixer User Manual

1. Pambuka

The JBL Professional CSM-28 is an 8-input, 2-output commercial series audio mixer designed for various applications including background music, security, and paging systems. Its versatile design makes it suitable for environments such as schools, hospitals, restaurants, and fitness facilities. The unit features RJ45 connectors for compatibility with JBL CSR-V in-wall volume controls and includes a universal power supply (100-240 VAC, 50/60 Hz).

Fitur utama kalebu:

8 inputs with 2 channel outputs.
Fanless, space-saving 1U design.
Independent bass/treble controls for each channel.
Euro-block type mic/line input and output connectors, and unbalanced RCA inputs for consumer devices.
Illuminated rings on controls for improved visibility and ease of use.

JBL Professional CSM-28 Audio Mixer Front View

Gambar 1: Ngarep view of the JBL Professional CSM-28 Audio Mixer. This image shows the compact 1U design and front panel controls.

2. Setup

2.1 Mbukak lan Inspeksi

Copot mixer saka kemasan kanthi ati-ati. Priksa unit kasebut kanggo pratandha kerusakan sing bisa kedadeyan sajrone pengiriman. Simpen kemasan asli kanggo transportasi utawa panyimpenan ing mangsa ngarep.

2.2 Sambungan Daya

Connect the supplied AC power cord to the mixer's power inlet and then to a suitable AC power outlet. The unit accepts universal AC voltages from 100 to 240 VAC, 50/60 Hz.

2.3 Sambungan Input lan Output

The CSM-28 features various input and output options. Refer to the rear panel diagram for specific connection points.

Microphone/Line Inputs: Use Euro-block connectors for balanced microphone or line-level signals.
Input RCA: Utilize unbalanced RCA inputs for connecting consumer audio devices such as CD players or media players.
Output: Nyambung menyang amplifiers or other audio processing equipment using the Euro-block output connectors.
JBL CSR-V Control: Use RJ45 connectors for connecting optional JBL CSR-V in-wall volume controls.

JBL Professional CSM-28 Audio Mixer Rear Panel

Figure 2: Rear panel connections of the JBL Professional CSM-28 Audio Mixer. This image illustrates the various input (Euro-block, RCA) and output (Euro-block) ports, as well as the power inlet and RJ45 connectors for remote control.

3. Instruksi Operasi

3.1 Powering On / Off

Ensure all connections are secure before powering on. Use the power switch, typically located on the front or rear panel, to turn the unit on or off. Allow a few seconds for the system to stabilize after powering on.

3.2 Pangaturan Tingkat Input

Each input channel has a dedicated level control. Adjust these controls to achieve an optimal signal level without clipping or distortion. Monitor the signal indicators (if present) to ensure proper gain staging.

3.3 Kontrol Nada

The CSM-28 features independent bass and treble controls. Use these to fine-tune the tonal characteristics of the audio signal for each channel or output zone, depending on the model's configuration.

3.4 Penyesuaian Tingkat Output

Adjust the master output level controls to set the overall volume for the connected amplification system or speakers. Ensure the output level is appropriate for the listening environment and does not overload downstream equipment.

4. Pangopènan

4.1 Reresik

To clean the exterior of the mixer, use a soft, dry cloth. For stubborn dirt, a slightly damp cloth with a mild, non-abrasive cleaner can be used. Ensure the unit is powered off and disconnected from the power source before cleaning. Avoid using harsh chemicals or solvents.

4.2 Ventilasi

The CSM-28 features a fanless design, relying on passive cooling. Ensure that the ventilation slots (if any) are not obstructed to allow for proper heat dissipation. Do not operate the unit in enclosed spaces without adequate airflow.

4.3 Panyimpenan

When not in use for extended periods, store the mixer in a cool, dry place, away from direct sunlight and extreme temperatures. It is recommended to use the original packaging for protection during storage or transport.

5. Ngatasi masalah

Masalah	Kemungkinan Penyebab	Solusi
Ora ana output audio	Daya ora nyambung utawa unit mati. Input/output cables incorrectly connected. Input/output levels set too low. Nyambung amplampu/speaker mati utawa rusak.	Verify power connection and turn unit on. Priksa kabeh sambungan kabel audio. Increase input and output level controls. Ensure external audio equipment is functioning.
Audio kleru	Tingkat input kakehan (clipping). Output levels too high. Kabel utawa sambungan sing salah.	Reduce input gain for the affected channel. Lower master output level. Inspect and replace any damaged cables.
Hum utawa swara	Masalah ground loop. Kabel sing ora dilindhungi. Interferensi saka piranti elektronik liyane.	Use balanced cables where possible. Priksa manawa kabeh peralatan wis dipasangake lemah kanthi bener. Move mixer away from power supplies or transformers.

6. Spesifikasi

Fitur	Rincian
Nomer Model	CSM28
Input	8 (Mic/Line Euro-block, RCA)
Output	2 (Euro-block)
Power Supply	100-240 VAC, 50/60 Hz (Universal)
Bobot Barang	7.5 pon (3.4 kg)
Ukuran produk (L x W x H)	17.2 x 11.9 x 1.7 inci (43.7 x 30.2 x 4.3 cm)
Teknologi Konektivitas	Euroblock, RCA
Kontrol	Independent Bass/Treble, Input Level, Output Level

7. Informasi babar pisan

JBL Professional products are covered by a limited warranty. The specific terms and duration of the warranty may vary by region and product. Please refer to the official JBL Professional website or your local distributor for detailed warranty information and registration procedures. Keep your proof of purchase for warranty claims.

For warranty service, contact JBL Professional customer support or an authorized service center.

8. Dhukungan

For technical assistance, product inquiries, or service requests, please contact JBL Professional support through their official website. Online resources, including FAQs and additional documentation, may also be available.

JBL Profesional Websitus: https://pro.harman.com/brands/jbl

JBL CSM28