JBL CSMA240

Overview

The JBL CSMA240 is a commercial mixer/amplifier designed to manage audio distribution in professional environments such as retail stores, offices, and restaurants. It features 8 input channels and 2 outputs, delivering up to 40 watts of peak power per channel. This unit supports various speaker configurations including 4 ohm, 8 ohm, 70V, and 100V systems, making it versatile for different installation needs. Its 1U rackmount design and fanless operation ensure quiet and efficient performance in any audio setup.

Key features

• Eight input channels with phantom power on all microphone inputs for flexible audio source connections
• Separate bass and treble controls on each output to tailor sound quality to the room’s acoustics
• Priority muting on channels 1 and 5 to ensure important announcements override background audio
• Voice-activated ducking automatically lowers background music during paging for clear communication
• AUX output allows easy expansion by connecting additional amplifiers to the system
• Remote volume control via RJ45 ports using standard Ethernet cables for convenient adjustments
• Fanless design reduces noise, maintaining a quiet environment suitable for professional settings
• Energy Star certification and RoHS compliance demonstrate energy efficiency and environmental responsibility

Key specs

• Power output: 40 watts peak per channel
• Input channels: 8
• Output channels: 2
• Speaker compatibility: 4 ohm, 8 ohm, 70V, 100V systems
• Controls: Separate bass and treble for each output
• Phantom power: Available on all microphone inputs
• Remote control interface: RJ45 ports for volume control
• Form factor: 1U rackmount
• Operation: Fanless
• Certifications: Energy Star, RoHS compliant

Connectivity and compatibility

This mixer/amplifier supports a wide range of speaker systems without the need for additional transformers, making it adaptable to existing audio infrastructures. The RJ45 ports enable remote volume control through wall-mounted units connected by standard Ethernet cables, simplifying integration into commercial audio setups. The AUX output provides flexibility to expand the system by linking extra amplifiers, accommodating larger or more complex audio environments.

Ideal uses and environments

The CSMA240 is well suited to environments requiring reliable background music, paging, or announcements. Its features make it a strong choice for retail stores, offices, restaurants, and other commercial spaces where clear audio and easy control are essential. The unit’s quiet operation and rackmount design fit naturally into professional audio racks, supporting neat and efficient installations.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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