Powered combo cable

A compact version of combo cable, designed specifically for DMX lighting applications offering the ability to run DMX signal and power down one tidy combo cable. Now with an imressivly thin 9.5mm overall diameter.

Advantages:

  • Parallel control for lighting boards through one combo cable via power line and DMX signal
  • Very flexible and enormously tread-resistant due to the round jacket made of cotton and viscose
  • Very good pairwise shielding of the DMX lines due to tinned helical copper mesh screen or copper braiding

Application:

  • Control line for DMX lighting consoles (wave impedance of )
  • Analogue + digital audio multipair with power supply

A Guide to Types of Speaker Cable

The age old argument of speaker cable quality has raged between audiophiles since the dawn of time (well not really, but certainly for quite a while). Some argue the quality of speaker cables is just as important as the quality of the Hi-fi components they’re connecting. Other enthusiasts save their cash buying budget cables and claim that they make no difference to the sound quality whatsoever.

So rather than poking our nose between these two opposing camps and risk getting dragged into the ongoing battle, lets elude the heated quarrel and instead offer up an overview of speaker cable jargon and give you some useful tips on how to buy your own.

How does resistance affect performance?

Generally speaking, resistance starts to have an effect on the performance of a speaker when resistance is greater than 5% of the speaker’s impedance. Resistance is affected by two key aspects: wire length and the cross sectional area of the wire. The shorter the wire is, the less resistance it will have. The trick here is to minimise wire lengths where possible but still ensure your speakers are positioned apart. It’s also important that the wire lengths to both speakers are the same to ensure they both have equal impedance values.

The cross sectional area of the wire is referring to the thickness, or gauge, of the wire. The thicker a wire or the lower the gauge, the less resistance. It is therefore a combination between speaker impedance, length and gauge that affects the resistance. The below table illustrates suggested speaker cable lengths that will ensure your speaker cable has a resistance less than 5% of your speaker’s nominal impedance given differing gauge measurements.

This article comes from cambridgeaudio edit released

How is Coaxial Cable Constructed?

Patented in 1880, coaxial cable has been a standard means of delivering high frequency electrical signals over distances with low signal loss. It has many applications, including telephone trunk lines, cable television signals, and cell phone boosters. Cables come in many sizes and lengths, each designed for a specific application.

Coaxial cable has an inner and outer core that share a geometric axis. This prevents electromagnetic interference and enables more reliable data transmission over longer distances.

Coaxial cable is constructed from a single copper or copper-coated steel wire as the center core which carries the high frequency signal. This wire is surrounded by a dielectric insulator, often made of plastic, which keeps a constant distance between the center conductor and the next layer. This insulator is wrapped with a metal shield made of woven copper, aluminum or other metal. This cancels outside electromagnetic interference. The final layer is a rubber wrapper that insulates the whole configuration.

Coaxial cable can be used in both indoor and outdoor applications with a few differences. Coax used outdoors requires additional insulation to protect the wires from sun and moisture. Cables rated for outdoor use may run along the outside of your home to a satellite dish or to the cable box on the corner. Whether out in the sun or buried in the earth, the cable needs to be protected enough to provide seamless transmissions.

This article comes from wilsonamplifiers edit released