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Isn’t that just adding a diode?
speakers are dc, right??

Speakers are fed with AC. Feed large amounts of DC to the voice coil of a speaker and it will overheat and fail.

That's why a lot of speakers are destroyed by under-powered amplifiers. The ampmidiers reach their amplitude limits and clip, which basically means it feeds DC to the speakers.

And directional speaker cable - don't get me started!!
 
Speakers are fed with AC. Feed large amounts of DC to the voice coil of a speaker and it will overheat and fail.

That's why a lot of speakers are destroyed by under-powered amplifiers. The ampmidiers reach their amplitude limits and clip, which basically means it feeds DC to the speakers.

And directional speaker cable - don't get me started!!
well i stand corrected.

I just remember the red and black plugs on the back of a hifi system and thought it was dc.. .a pos and a neg, but the electricity was in the form of a waveform to create soundwaves.

A waveform in reference to 0v...

so how do you hear a minus sound???
 
well i stand corrected.

I just remember the red and black plugs on the back of a hifi system and thought it was dc.. .a pos and a neg, but the electricity was in the form of a waveform to create soundwaves.

A waveform in reference to 0v...

so how do you hear a minus sound???

Red and black needed to indicate polarity. Otherwise left and right would be in anti-phase. This results in most of the bass notes cancelling out.
 
so how do you hear a minus sound???

If a speaker system is out of phase alignment it's usually a lot quieter than you'd expect it to be, just most people don't know what's causing it.

Even more confusing if your bass and mid/tops are out of time alignment. The bass can be shaking the building to pieces and you can feel the bass, but it can hardly be heard.

Red and black needed to indicate polarity. Otherwise left and right would be in anti-phase. This results in most of the bass notes cancelling out.

With low audio frequencies the waves are so large the sub of an in phase system will have peaks and troughs depending on where in a room you stand. I prefer to have single point subs to avoid this
 
I can recommend that anybody who fancies some serious head-shaking and jaw-dropping go and look at the stuff that Russ Andrews sells.

Warning - do not eat or drink as the same time as perusing his website.
 
I can recommend that anybody who fancies some serious head-shaking and jaw-dropping go and look at the stuff that Russ Andrews sells.

Warning - do not eat or drink as the same time as perusing his website.

Ah yes, Russ Andrews and his special mains cables and plugs.

Mind you, Russ is a mere amateur compared to Peter and May Belt. Check out PWB electronics!
 

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