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Cleaning dirty gain controls

Gain controls, which utilize a variable resistor called a potentiometer (pot) to control the level of the input signal, can collect dust and other particles inside of them. A common symptom of dirty gain controls is an crackling, static, or intermittent s…
PDF Available Introduction Gain controls, which utilize a variable resistor called a potentiometer (pot) to control the level of the input signal, can collect dust and other p… http://qscservice.com/news/cleaning-dirty-gain-controls/

Replacing amplifier power switches

After repeated uses the power switch may sometimes wear out, seize, arc, lose its spring tension, fail to make a connection, or otherwise go bad. Replace a bad switch with a brand new one by following these simple instructions.
PDF Available Introduction After repeated uses the power switch may sometimes wear out, seize, arc, lose its spring tension, fail to make a connection, or otherwise go ba… http://qscservice.com/news/replacing-amplifier-power-switches/

K and KW wiring configurations explained

K and KW loudspeakers are easily configurable to work with almost any sound system. There are many connection types on the loudspeaker. This document will explain the connection types, provide signal flow block diagrams, and show some typical wiring confi…
PDF available Introduction K and KW loudspeakers are easily configurable to work with almost any sound system. There are many connection types on the loudspeaker. This documen… http://qscservice.com/news/k-and-kw-wiring-configurations-explained/

Is your QSC product generating noise by itself?

Determining if noise is generated within a QSC amplifier or powered loudspeaker
PDF available     Introduction Finding the source of noise in an audio system is no easy task. Any audio equipment or cabling can generate noise on its own, in… http://qscservice.com/news/your-qsc-product-generating-noise-itself/

Decoding QSC Serial Numbers for Manufacture Date

Not all serial numbers are created equal
PDF Available   Not all serial numbers are created equal. QSC uses two types of serial numbers which are formatted in different ways. A serial number is always 9 digits… http://qscservice.com/news/decoding-qsc-serial-numbers-manufacture-date/

K, KW, and KLA Series Amplifier Removal

This guide provides the step-by-step instructions to remove the amplifier module from K, KW, and KLA series loudspeakers for service, repair, or replacement.
PDF version available   This blog post/guide provides the step-by-step instructions to remove the amplifier module from K, KW, and KLA series loudspeakers for service, … http://qscservice.com/news/removing-amplifier-module-house-k-loudspeakers/