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

1. Okwu mmalite

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).

Atụmatụ gụnyere:

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

Foto 1: N'ihu view of the JBL Professional CSM-28 Audio Mixer. This image shows the compact 1U design and front panel controls.

2. Nhazi

2.1 Mwepu na nyocha

Carefully remove the mixer from its packaging. Inspect the unit for any signs of damage that may have occurred during shipping. Retain the original packaging for future transport or storage.

2.2 Njikọ ike

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 Njikọ ntinye na ntinye

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

Igwe okwu/Ntinye ahịrị: Use Euro-block connectors for balanced microphone or line-level signals.
Ntinye RCA: Utilize unbalanced RCA inputs for connecting consumer audio devices such as CD players or media players.
Nsonaazụ: Jikọọ na 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. Ntuziaka ọrụ

3.1 Gbanyụọ/ gbanyụọ

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 Input Level Adjustment

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 Njikwa ụda

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 Output Level Adjustment

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. Nlekọta

4.1 Nhicha

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 Mgba ikuku

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 Nchekwa

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. Nchọpụta nsogbu

Nsogbu	Ihe nwere ike ime	Ngwọta
Enweghị mmepụta ọdịyo	Ejikọghị ike ma ọ bụ gbanyụọ nkeji ahụ. Ejikọtara eriri ntinye/mpụta na-ezighi ezi. Input/output levels set too low. Ejikọtara amplifier/speakers off or faulty.	Verify power connection and turn unit on. Lelee njikọ eriri ọdịyo niile. Increase input and output level controls. Ensure external audio equipment is functioning.
Olu agbagọ	Input levels too high (clipping). Ọkwa mmepụta elu oke. Igwe ma ọ bụ njikọ ezighi ezi.	Reduce input gain for the affected channel. Lower master output level. Inspect and replace any damaged cables.
Hum ma ọ bụ mkpọtụ	Nsogbu nke okirikiri ala. Unshielded cables. Ntinye aka sitere na ngwaọrụ eletrọnịkị ndị ọzọ.	Use balanced cables where possible. Hụ na e tinyere ntọala kwesịrị ekwesị n'ime akụrụngwa niile. Move mixer away from power supplies or transformers.

6. Nkọwapụta

Njirimara	Nkọwa
Nọmba nlereanya	CSM28
Ntinye	8 (Mic/Line Euro-block, RCA)
Nsonaazụ	2 (Euro-block)
Ịnye ọkụ	100-240 VAC, 50/60 Hz (Universal)
Ibu Ibu	7.5 pound (3.4 n'arọ)
Akụkụ ngwaahịa (L x W x H)	17.2 x 11.9 x 1.7 sentimita (43.7 x 30.2 x 4.3 cm)
Teknụzụ Njikọta	Euroblock, RCA
Njikwa	Independent Bass/Treble, Input Level, Output Level

7. Akwụkwọ ikike Ozi

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 webma ọ bụ onye na-ekesa ihe n'ógbè gị maka ozi zuru ezu gbasara nkwa na usoro ndebanye aha. Debe ihe akaebe nke ịzụrụ ihe maka nkwupụta nkwa.

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

8. Nkwado

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 Ọkachamara Websaịtị: https://pro.harman.com/brands/jbl

JBL CSM28