The chart is absolutely wrong and misleading, 4mt copper cable for a 300W rms power suggests me a 16 awg cable, what a joke! Reply Note: I do not recommend using wire nut connectors to join wire together as they aren’t nearly as reliable. They’re best suited for home electrical wiring. 2. Connecting speaker wire together by soldering Side hole type] Insert the wire into the opening carefully, making sure it fits under the screw. [Center hole type] Shape the wire into a half-circle, with the wire tilting horizontally away from the insulation. Set screw type: these have a set screw that is loosened to allow inserting the speaker wire and then tightened to hold it in place inside a metal barrel.

Speaker Wire Gauges Explained: Which Do You Need? - How-To Geek

It’s a good compromise between price and power handling as it’s usually affordable and easy to find. How to find the correct size wire for ANY length or speaker system

3. Extreme 14 Gauge

All speaker wire sold is stranded, meaning it’s made up of a bundle of 16-60 or more very fine copper conductors. Solid wire, however, has only one conductor. In terms of audio, it’s fine and the sound quality is the same.

AUSTERE III Series 14 Gauge Speaker Cable - 15.2 m

Using a typical and reasonable example, we can use 16AWG stranded copper wire with 19 strands of 29AWG wire (“19/29”). Resistance per meter is rated at 0.0147Ω/m. [1] Aluminum has only 61% of the conductivity of copper (in other words, it has 39% more resistance) meaning it will take larger aluminum wires to get the same power handling, capacity, and resistance value. Buying & using speaker cable is definitely one of those cases where the old advice “better to have too much than not enough” applies! You don’t want to run out because you didn’t plan ahead. In this guide, I’ll show you the proper gauge and type of speaker wire you need. I’ll also cover a lot more, too:

Should you buy expensive audiophile cables?

For surround sound and center channel home theater speakers, you shouldn’t spend a lot because their power needs are usually fairly low. Crimp very hard with the tool to make press the connector down hard, holding the wire inside permanently. In most cases for everyday listening at medium or low power levels (50W RMS or under), 18 gauge (18AWG) wire is what you need. Hold the speaker and carefully slide the crimp terminals onto each tab. Be sure not to use too much force as the tabs can get bent if they’re pushed too hard. (If the connectors are too tight, try carefully prying them open a bit with a miniature flathead screwdriver or other thin, flat tool) As you didn’t include the speaker impedance (this is very important!), I gather it’s 4 Ohms based on the 16AWG result you referred to. I’ll go through this example and validate it using an engineering approach.