The JBL CSMA240 8-Input 40W Commercial Mixer Amplifier is can get the job done! Whether you run a restaurant, store or office, this Mixer/Amp can meet your needs. 8 input channels allow for great background music options, while still saving mic connections on 2. . The JBL CSMA 240 Mixer-Amplifier allows you to page customers or employees, and make announcments with absolute clarity. The JBL CSMA240 8-Input 40W Commercial Mixer Amplifier even includes signal sensing lights for convenience if the system is stored in a dark area. CSMA is compatible with a remote control to adjust volume levels. Remote must be purchased separately. The JBL csma 240 Mixer Amp will help you create the system you need. Recommendations: For wire runs of 25 feet or less, JBL recommends 16-gauge speaker wire. For longer runs, 14-gauge or better is recommended.
DriveCore
The JBL CSMA240 2-Channel 40W Commercial Mixer Amplifier utilizesuses DriveCore technology. This allows for the reduction in volume and mass. Less space, less energy used!
Harman GreenEdge
JBL Commercial mixer amplifer's are manufactured under Harman's GreenEdge environmental initiative. These products are created using recycled materials to establiSHan environmentally-conscious manufacturing processes. The result is an 80% improvement in efficiency over previous models.,JBL CSMA240 8-Channel 40W Commercial Mixer Amplifier is EnergyStar certified.
Front Panel
The front panel of the JBL CSMA240 Input 40W Commercial Mixer Amplifier was built with eight independent input level controls. Each level control has a ring which lights green to indicate presence of an input signal. Two volume controls (Master 1 and Master 2) allow you to control the output of the two amplifiers. These rings surrounding the volume controls will light green with the presence of a signal. If the signal reaches the threshold of clipping or audible distortion, the ring will glow red. Bass and treble tone control potentiometers on each output channel. A flat or Phillips screwdriver is needed to adjust bass and treble.
Input
The JBL CSMA240 has 8 inputs which will accept 3-pin or 5-pin Euro-block mic/line connectors. These are designed for pre-built or professionally-wired balanced line 22-24 gauge cables. Six inputs also have RCA mono sum connectors for connecting audio devices, such as CD/DVD players. The remaining two inputs (Ch1 and Ch5) are capable of being used for Voice-activated Ducking (VOX function) and Priority Muting, and utilize the supplied 5-pin Euro-block connectors. Each of the 8 inputs has a Line/Mic switch for selecting the input gain, according to the source used.
Output
The JBL CSMA240 comes with 2 powered outputs for low impedance or constant-voltage systems. These outputs will accept 5-pin Euro-block connectors. Pre-built or professionally-wired, high-quality two-conductor, heavy gauge speaker wire is recommended. At distances of up to 25 feet, 16-gauge we suggest you use a wire. From 26-40 feet, you should use 14-gauge speaker wire. To drive distributed speaker systems designed to operate at 70V or 100V, the 5-pin Euro-block connectors have designated terminals for 70V, 100V and Common. For 8-ohm speakers, the and - terminals should be used.
Aux Outputs
Two Auxiliary outputs are available for connecting additional amplifiers. The audio signal is the mix of the input channels, and the output is at a fixed level. The master volume control and tone controls have zero effect on the aux output signal. The Aux 1 and Aux 2 outputs each have 3-pin Euro-block connectors.
Input Routing DIP Switches
The JBL CSMA240 8-Channel 40W Commercial Mixer Amplifier has a default routing of input channels 1-4 to amplifier 1 and input channels 5-8 to amplifier 2. Six DIP switches for each channel are provided to send the signals to the correct amplifiers. Switches 1-4 allow channels 1-4 respectively to be sent to Amp 2 (in addition to Amp 1), and switches 7-10 allow channels 5-8 respectively to be sent to Amp 1 (in addition to Amp 2). Each channel can be configured on its own as you choose.
Sleep Mode
To save energy, the unit is designed to go into sleep mode when no signal is present for approximately 30 minutes. When the input signal returns, the amp will wake up and return to normal operating mode.
Remote Volume Control
Two RJ-45 ports are provided on the back panel for plugging in up to 2 CSR-V remote volume controllers via Ethernet cables. One RJ-45 port is provided to control the volume for Amp 1, and one port is provided for Amp 2.
Phantom power
Phantom power (27V) can be applied to all microphone inputs by turning on the Phantom Power switch (one of the unit's DIP switches).
Hi-Z Switch
By default, the JBL CSMA240 is configured to drive low impedance speakers (4 Ohms, minimum). The unit has two DIP switches, one for each amp, that will configure the unit to drive 70V or 100V speaker systems independently and directly. When driving these high impedance speakers, the amplifier automatically inserts a 70Hz high-pass filter.
VOX Function
Voice-activated ducking, or the VOX function, is available on input channels 1 and 5. This function causes attenuation of the overall output level of the amplifier when the input levels on channels 1 and/or 5 reach a set threshold. A designated trim pot is provided on the two channels for setting the audio input level required to activate ducking. A standard use of the VOX function would be to automatically lower the background music in the room while making an announcement over the sound system. After the announcement is made, the background music returns to its previously set level.
