1. Introduksjon
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).
Nøkkelfunksjoner inkluderer:
- 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.
Figur 1: Foran view of the JBL Professional CSM-28 Audio Mixer. This image shows the compact 1U design and front panel controls.
2. Oppsett
2.1 Utpakking og inspeksjon
Ta mikseren forsiktig ut av emballasjen. Undersøk enheten for tegn på skade som kan ha oppstått under transport. Ta vare på originalemballasjen for fremtidig transport eller oppbevaring.
2.2 Strømtilkobling
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 Inn- og utgangstilkoblinger
The CSM-28 features various input and output options. Refer to the rear panel diagram for specific connection points.
- Mikrofon-/linjeinnganger: Use Euro-block connectors for balanced microphone or line-level signals.
- RCA-innganger: Utilize unbalanced RCA inputs for connecting consumer audio devices such as CD players or media players.
- Utganger: Koble til 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.
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. Bruksanvisning
3.1 Slå på/av
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 Justering av inngangsnivå
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 Tonekontroller
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. Vedlikehold
4.1 Rengjøring
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 Ventilasjon
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 Oppbevaring
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. Feilsøking
| Problem | Mulig årsak | Løsning |
|---|---|---|
| Ingen lydutgang |
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| Forvrengt lyd |
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| Brumming eller støy |
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6. Spesifikasjoner
| Trekk | Detalj |
|---|---|
| Modellnummer | CSM28 |
| Innganger | 8 (Mic/Line Euro-block, RCA) |
| Utganger | 2 (Euro-block) |
| Strømforsyning | 100-240 VAC, 50/60 Hz (Universal) |
| Varevekt | 7.5 pund (3.4 kg) |
| Produktdimensjoner (L x B x H) | 17.2 x 11.9 x 1.7 tommer (43.7 x 30.2 x 4.3 cm) |
| Tilkoblingsteknologi | Euroblock, RCA |
| Kontroller | Independent Bass/Treble, Input Level, Output Level |
7. Garantiinformasjon
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. Støtte
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 Professional Webnettsted: https://pro.harman.com/brands/jbl
