Bypassing the filters

To completely bypass the filter circuitry of a channel, set the jumpers on both Jx01 and Jx02 across pins 1 and 2, which are the upper two pins on their headers (see Figure 6). Note: If you neglect to place jumpers on either header, no signal will pass on that channel.

Figure 6

Switch Sx01 in	Switch Sx01 in	Resistor network
"× 1" position	"× 10" position	in RNx02

80 Hz	800 Hz	120K

100 Hz	1000 Hz	82K

120 Hz	1200 Hz	68K

160 Hz	1600 Hz	56K

200 Hz	2000 Hz	47K

250 Hz	2500 Hz	33K

500 Hz	5000 Hz	18K

800 Hz	8000 Hz	12K

1600 Hz	16000 Hz	5.6K

2000 Hz	20000 Hz	4.7K

Low-pass filter frequency table

Programming the low-pass filter

Bypass/enable header—To use the low-pass filter, set the jumper on Jx01 across pins 2 and 3, which are the lower two pins on their header. But if you do not wish to use the low-pass filter and want to bypass it instead, set the jumper across pins 1 and 2.

Setting frequency—To set the corner frequency (at which the output is 6 dB down) of the low-pass filter section, choose the appropriate resistor network value and switch setting for RNx02 and Sx01, respec- tively. (Sx01 is a ×10 range switch. In its upper position, the frequency range is ×10; in the lower it is ×1.) Use the low-pass table to select the right combination. See the appendix of this manual for keys to identifying the correct resistor network.

Inserting the resistor network—If there is a resistor network already installed in the socket, carefully pull it straight out. Insert the pins of the new resistor network into the socket holes and carefully press the network into the socket. Be careful to avoid bending the pins of the resistor network. Orientation of the resistor network is unimportant, as long as all 8 pins are well seated in the socket.

Switch Sx02 in	Switch Sx02 in	Resistor network
"× 1" position	"× 10" position	in RNx04

20 Hz	200 Hz	120K

30 Hz	300 Hz	82K

40 Hz	400 Hz	56K

50 Hz	500 Hz	47K

80 Hz	800 Hz	27K

100 Hz	1000 Hz	22K

120 Hz	1200 Hz	20K

150 Hz	1500 Hz	15K

200 Hz	2000 Hz	12K

400 Hz	4000 Hz	5.6K

500 Hz	5000 Hz	4.7K

800 Hz	8000 Hz	2.7K

High-pass filter frequency table

Programming the high-pass filter

Bypass/enable header—To use either the high-pass filter or the constant-directivity horn equalization, or both, set the jumper on Jx02 across pins 2 and 3, which are the lower two pins on their header. But if you do not wish to use either one of these functions and want to bypass them, then set the jumper across pins 1 and 2.

Setting frequency—To set the corner frequency (at which the output is 6 dB down) of the high-pass filter section, choose the appropriate resistor network value and switch setting the RNx04 and Sx02, respectively. (Sx02 is a ×10 range switch. In its upper position, the frequency range is x10, in the lower it is ×1.) Use the high-pass table to select the right combination. See the appendix of this manual for keys to identifying the correct resistor network.

MPC-XU specifications

The JBL Professional MPC-XU is a powerful and versatile mixer designed for live sound, broadcast, and studio applications. As part of JBL's commitment to providing high-quality audio solutions, the MPC-XU combines advanced technology with user-friendly features, making it an ideal choice for a variety of sound reinforcement tasks.

One of the standout features of the MPC-XU is its robust design, built to withstand the rigors of touring and demanding environments. The mixer includes high-quality components that ensure durability and reliability over time, along with a streamlined layout that facilitates quick operation and accessibility during live performances.

The MPC-XU boasts a wide range of connectivity options. It is equipped with multiple inputs and outputs, including XLR, TRS, and RCA connections, allowing the user to connect a variety of audio sources and send signals to multiple destinations. This flexibility makes it suitable for complex audio setups commonly encountered in professional environments.

Another key characteristic of the MPC-XU is its powerful built-in processing capabilities. The mixer features high-resolution digital signal processing (DSP), providing users with crystal-clear audio quality. It includes a selection of advanced effects, including EQ, compression, reverb, and more, which can be applied to individual channels or the overall mix. This ensures that sound engineers can shape their audio according to specific requirements, enhancing the listening experience for audiences.

The user interface of the MPC-XU is designed for efficiency and ease of use. It features a clear LCD display that provides real-time feedback on levels and settings, along with intuitive controls for adjusting parameters quickly. This is particularly beneficial during live performances where time is of the essence, allowing sound engineers to focus more on the performance rather than struggling with complex configurations.

Compatibility with various software applications is another strong point of the MPC-XU. It integrates seamlessly with popular digital audio workstations (DAWs), enabling users to capture and manipulate audio effortlessly. This feature supports both recording and playback, making it suitable for studio environments as well.

In conclusion, the JBL Professional MPC-XU is a powerful mixer that is ideal for both live and studio applications. With its robust construction, extensive connectivity options, advanced DSP capabilities, and user-friendly interface, it stands out as a reliable and versatile choice for audio professionals seeking high-quality sound solutions.

JBL Professional MPC-XU owner manual Bypassing the filters, Programming the low-pass filter

Models: MPC-XU