Propaudio

  The function of Cable Management Protectors Our Cable Management Protectors , featuring rubber construction,it is designed for covering cable runs outdoors at public events, where the risk of trips or falls must be minimised. With 2, 3 or 5 separate channels , it is ideal for live sound applications where multiple cable runs such as audio, lighting and power are required and vehicle traffic in maintenance operations or emergency situations. Cable cover bridges are fast becoming an industry requirement, and therefore a necessary equipment for audio、video、power and lighting companies, venues, studios and even some workplaces. As you know, council regulations, OH & S standards and licensing compliance in venues are forever increasing in their range, and authorities much stricter in their enforcement,especially when it comes to anything, not matter how small company, that could cause injury. Including the wiring, are run, hung, stored and display, regardless of whet...

  What is the DMX512 lighting control cable (AES/EBU Digital audio Cable)? DMX cable signal is based on RS485 signal, a kind of industry-standard protocol after adjusting the transmit Baud rate. Usually there are one pair DMX512 lighting control cable and two pair DMX512 lighting control cable . Cable types that are appropriate for DMX512 usage will have a nominal characteristic impedance of 110(±22)ohms ,at frequencies from 0.1MHz to 128 times the maximum frame rate when measured at the output terminals. The signal amplitude shall lie between 2V and 7V peak-to-peak when measured across a 110 ohm resistor connected to the output terminals, without any interconnecting cable present.NOTE a typical value is 4V±10% . At the short distances, cables with higher capacitance and different characteristic impedance such as microphone cable can be used. However, the significantly lower impedance and higher capacitance of these cables distort the DMX512 digital waveforms, which in...

  How to choose the right speaker wire/cable? The purpose of Speaker cable is the wire used for the electrical connections between amplifier sources and loundspeakers system.The transfer is accomplished through the low-voltage electrical current conducted through the wires.It has three key electrical properties: resistance, capacitance and inductance. Resistance is by far the most important property to look at. Today most loudspeaker systems have an impedance between 4 ohm and 8 ohm. As the resistance rises it starts to affect the system performance. Obviously there can be a reduction in the drive current to the loudspeaker as the voltage across the cable increases. The other issue is that the back EMF created by the loudspeaker needs to have a low impedance source against which to work. As the source impedance rises, so the back EMF is absorbed less. This affects the performance of the loudspeaker, particularly in the bass region where the bass may not be as pronoun...

A Line level is in the region of 0 dBV (1.0 volt), Line level signals have a much higher voltage output than mic or instrument level, usually somewhere around 750 millivolts.It is about 1,000 times as strong as a mic-level signal, so the two do not ordinarily use the same input. This signal travels from your pre-amp to the amplifier that powers your speakers.  -10 dBV (0.316 V RMS) for consumer equipment (like MP3 and DVD players), +4 dBu (1.23 V RMS) for professional equipment (mixing desks and signal processing gear) . The 4 main connector types we see in line level audio, and in fact all of analog audio, are the 6.35mm jack, 3.5mm mini jack, RCA and XLR connector. Connecting a line-level source (such as mixer output) to a mic-level input will cause the sound to be loud and distorted because the line signal is much stronger than what the mic input will accept. Inputs and outputs on many mixers are switchable for either mic or line level operation. Line outputs hav...