JBL MPC-X100 100 Hz - Manual
JBL MPC-X100 100 Hz – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Input panel
- Page 3 – Setting input operating mode on amplifier or input card; after; Figure 3
- Page 4 – Bridged Mode Operation; Bypassing the filters; Setting frequency; Figure 4
- Page 5 – IV. Typical configurations; handle and set the
- Page 6 – across pins 2 and 3 for +10 dB at 20 kHz.; -Way Active Crossover; cable to provide the same signal to both channel inputs.
- Page 8 – Appendix; Identifying resistor networks; the correct values for the desired filter frequencies.
1
MPC-X100 100 Hz Subwoofer Crossover
For JBL MPC and MPA amplifiers
Owner’s Manual and Installation Guide
I. Description
The MPC-X100 is a dual-channel 100 Hz crossover filter accessory for use with JBL MPC
and MPA power amplifiers.
The MPC-X100 is user configurable to fulfill these functions:
active crossoverChannel 1: 100 Hz low-pass; Channel 2: 100 Hz high-pass
or
full-range.
subsonic filterprogrammable; preset @ 20 Hz to protect against damage from infrasonic signals.
ultrasonic filterprogrammable; preset @ 20 kHz to protect against damage from ultrasonic signals.
CD horn EQfor use in systems with uncompensated constant-directivity horns.
Each channel has an electronically balanced input and bypassable low-pass and high-pass
sections. Each filter circuit uses a 4-pole (24 dB/oct) Linkwitz-Riley alignment.
An alternative to the MPC-X100, the MPC-XU is a universal crossover with selectable
crossover frequency.
The MPC-X100 installs onto the amplifiers input card, where its settings are not easily
accessible to the user. This makes the MPC-X100 ideal for installed or rental sound systems,
since it practically eliminates the danger of unauthorized tampering with crossover setting or
incorrect crossover output connections, as well as the loudspeaker damage that may result
from such user tampering.
Installing the MPC-X100 involves soldering a 10-pin and a 12-pin header into corresponding
holes on the input card, a process that only qualified technical persons should attempt. We
recommend that you enlist an authorized JBL service center to perform the task. See the
installation section of this manual for more information.
Figure 1 shows a block diagram of both channels of the MPC-X100:
100 Hz
Linkwitz-Riley
Low-Pass Filter
Programmable
Linkwitz-Riley
Low-Pass Filter
(factory preset @ 20 kHz)
Programmable
Linkwitz-Riley
High-Pass Filter
(factory preset @ 20 Hz)
100 Hz
Linkwitz-Riley
High-Pass Filter
Channel 1
(subwoofer)
Channel 2
(high-pass or full-range)
Subwoofer
Output
High-pass or
Full-range
Output
jumper block: 3-pin
header J101
jumper block: 3-pin
header J101
jumper block: 3-pin
header J201
jumper block: 3-pin
header J102
jumper block: 3-pin
header J202
jumper block: 3-pin
header J203
resistor network RN202
& switch S201
resistor network RN104
Figure 1. Block diagram of the MPC-X100
*TD-000084-00*
TD-000084-00
Rev. A
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Summary
2 II. Installation CAUTION: The MPC-X100 contains active components which can be damaged by electro- static discharge (ESD). Be sure to practice standard ESD precautions, and always ground yourself and your workstation before handling exposed circuit cards.Installing the MPC-X100 requires PC board s...
3 NOISE SHIELD TAB 8 If you need to make any adjustments to the MPC-X100 settings or if you need to record them, do so now, because the MPC-X100 will be inaccessible once the noise shield is installed and the input panel is re-installed into the amplifier chassis. See Section III, Programming the M...
4 Bridged Mode Operation With the amplifier in bridged mono mode and driving a high- power subwoofer system, the MPC-X100 can be used as a subwoofer filter, taking full-range audio from Channel 1s input and sending on a 100 Hz low-pass signal to the amplifier circuitry. For correct operation, bypa...
