T
The Daily Insight

Is it safe to leave speaker cable connected to amplifier?

Author

David Jones

Published Mar 22, 2026

Is it safe to leave speaker cable connected to amplifier?

Safety Tip: It’s a good idea for safety and radiated/conducted reasons to never leave a speaker cable connected to an actively powered amplifier without an attached speaker or dummy load. I also think it’s important to chose cables that have quality terminations.

Can a poor speaker cable make your system sound worse?

What’s more, a poor speaker cable can definitely make your system sound a lot worse than it really is, so it’s absolutely worth budgeting for decent cabling when buying or upgrading your system. Fail to do so and you’ll end up with cheap, poorly made cables that will waste the talents of the expensive kit you’ve just forked out on.

How big is a Radio Shack speaker wire?

The solder I have, I bought from Radio Shack, it is standard 60/40 solder, though I think that might be illegal now. I’ve had mine many many years. It is 0.032 inches in diameter, or about 0.813mm. The thinner the solder, the easier and faster it melts. One last note, speaker wire pairs are marked by some means so you can tell them apart.

Can you use heat shrink on speaker wire?

By staggering the cuts in the wire, you make it impossible for one wire to make contact with the other, and thereby short out your amp. Certainly, covering the solder joints with Heat Shrink Tubing, will yield the best looking and most permanent results. Electrical Tape is OK, but over time it tends to bleed and weep, and can get messy.

Why do I need a shielded speaker wire?

Using shielded speaker wire does not produce cleaner audio signals; it can however protect the audio signal being transmitted from unwanted noise. Noise sources can come from electronic transformers, fluorescent ballasts, nearby radio antennas, large motors, etc.

How big is a Belden shielded speaker wire?

FYI: When comparing Belden 6200UE (16AWG, un-shielded speaker wire) to its shielded equivalent 6200FE the overall nominal diameter is 0.176” and 0.188” respectively. Follow typical cabling charts for the wiring gauge you will require; see the below chart from Belden for reference.

Why are there so many myths surrounding speaker and audio cables?

Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information. Please try again later. Hugo: Gene please tell us why there are so many crazy myths surrounding speaker and audio cables?

Safety Tip: It’s a good idea for safety and radiated/conducted reasons to never leave a speaker cable connected to an actively powered amplifier without an attached speaker or dummy load. I also think it’s important to chose cables that have quality terminations.