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What are spikes and surges?

  Lightning* is perhaps the most well known surge event as it is capable of causing catastrophic equipment damage where whole systems are destroyed with one 6000V+ strike. More nefarious are the effects of the multiple daily spikes that slowly destroy your capacitors, chips and other electronic components causing lockups, decreased performance and shortened equipment […]

What is “clean” power?

Ideally the AC power that feeds our high performance audio, home theater and studio systems would be rock steady –  it would not go up or down in voltage depending on the time of the day and it would not get interrupted by storms or accidents. It would also be free of power line ‘nasties’ […]

Hum and buzz in audio systems and home theaters

What effect does ‘hum’ and ‘buzz’ have? ‘Hum’ and ‘buzz’ can cause major noise issues with our high performance audiovisual systems. Hum is a superposition of the 60Hz mains AC frequency on the audio or video signal. Buzz  is a superposition of the harmonics of the 60Hz (120Hz, 180Hz, etc) mains AC frequency on the […]

What is a dedicated line?

A dedicated line is an electrical circuit used solely for the purpose of supplying power to an audio or video system. No non-AV equipment should be connected to a dedicated line. The line runs back to the main service panel or a sub panel. A single high performance room may be fed by a number […]

What is whole room power conditioning?

Whole room power conditioning is a term we invented to refer to the use of a single conditioner to supply power to a number of dedicated electrical circuits feeding a single room.  The length of the dedicated circuits should be kept as short as possible to maximize the ability of the connected system to draw […]

What is over / under voltage protection?

Power conditioners with this feature can turn off their outputs and hence connected equipment in the event of a potentially damaging and prolonged under or over voltage condition. Turn off points vary from manufacturer to manufacturer but could be generalized as below 90V or above 140V. Torus Power‘s AVR and AVR2 models and selected SurgeX […]

What is voltage regulation?

A power conditioner with voltage regulation keeps its output at a fixed voltage of 120V for a range of input voltage conditions. There is normally a minimum and maximum voltage within which the regulator can maintain a constant output voltage. These limits vary from manufacturer to manufacturer but 90-140V could be considered a general range. […]

What is a power regenerator?

Regenerators are conceptually very similar to online UPS systems except that there is no battery. They are basically amplifiers designed to output 120V at 60Hz . Done right, with a low distortion sine wave inverter, power regenerators offer protection for all power quality issues except interruptions and the high degree of isolation between input and […]

How should I choose a UPS?

The major considerations are: How much power does the UPS need to supply? In the event of a power outage the only devices you really need to keep on battery power are pieces of sensitive equipment such as projectors, computers and the like. To size the UPS add up the power consumption, in watts, of […]

Why should my projector be on a UPS?

CEDIAs (Custom Electronics Design & Installation Association) Home Theater Video Design bulletin (CEA/CEDIA-CEB23) states that: “an Uninterruptible Power Supply (UPS) is strongly recommended for proper shut down and cooling of the projector and lamp in the event of a power failure”. Without a UPS the projector lamp and electronics can overheat leading to failure and […]