![]() Then there is the damping factor to consider (or not). Others say that if you don’t run the system at maximum power, then simply adjust the amplifier volume control to the level you want and you don’t need to worry about any losses. Others say anything less than 0.5dB is not discernible. Some people suggest the cable losses should be less than 0.3dB. While the results of the above speaker cable loss calculator are theoretically correct, how they are interpreted will depend on which school of thought you subscribe to, how good you think your ears are and how much you care. A major Hi-Fi manufacturer shows the following in their specifications: I advise you use the most conservative ratings, which should be stated as “Average Continuous Power”, “Continuous Power” or “RMS Power”. Keep in mind that some manufacturers only state their absolute maximum power ratings, which are generally not sustainable for longer periods of listening or are come with considerable distortion. Specified amplifier power should be in the amplifier’s manual or specifications. ![]() However, if you want to know more about how the cable affects your amplifier and speaker system, then you can add in your amplifier specifications. For example if you just want to know if your cable losses are greater or less than say 0.5dB, then you have that information. Here you will see the total resistance of the cable, and the resulting decibel (dB) reduction in power reaching the speaker due to the cable loss.įor many people, that is sufficient information. Once the above values are entered, you can see the calculated results in the box labelled “Calculated Cable Losses”. It should be specified in ohms (the symbol for ohms is “Ω”). Speaker impedance is the impedance stated on the back of the speaker or in the speaker’s manual. What you enter here depends on the units of measure you chose.Įnter the Cross Sectional Area (c.s.a.) of the cable in mm² Cable size refers to the thickness of the speaker cable.Cable length refers to the length of the cable from the amplifier terminals to the speaker terminals.Then the next two cells to fill in are the cable length and the cable size: For countries not using metric, select “Feet & AWG” – the cable lengths will be in feet and cable size will be the AWG gauge number. Most countries use metric, meaning the cable lengths are measured in metres, and the cable size is in mm². Either “Metres & mm²” or “Feet & AWG” can be selected by clicking on the white cell and selecting from the drop down options.
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