Club culture was built around people dancing to music played on turntables. Specifically Technics SL1200 mk2 or SL1210 mk2 which only have a very little suspension in their feet.
If you run in mono and there will be almost no feedback no matter how loud you play or how close to the speakers you are.
Since one of the audio channels is inverted when recorded any signal feeding back will be cancelled out when the re-inverted signal is combined.
This is why old DJ mixers from people like Pioneer used have a prominent Stereo/Mono switch.
There's no real soundstage on a dance floor so you don't miss the stereo.
In the really cool venues, back in the day, they used crossovers to move just the high-hats or percussion to a specific speaker array hanging over the centre of the dance floor and have the mids and bass somewhere else but it would always be from a mono signal never stereo.
Source: Phono.
Aux Source: I worked as a DJ way back when and have experience of very loud systems in front of large crowds of dancing people. I've also played many a sketchy flat where everything was balanced on milk crates on wooden floorboards.
Been DJing and running our own sound for years and years.
You 100% can get feedback from the sound when DJing. It’s guaranteed if you’ve enough bass. We put the decks on concrete slabs which in turn are on 4 squash balls to deal with it.
What do you mean by “one it channels is inverted when recorded”??
I mean on record one of the channels L or R is inverted (I forget which) before it’s cut.
The phono pre-amp will re-inver it as part of its function.
When you combine L+R after preamp to make mono the feedback signal from one channel will be combined with inverted feedback signal from the other channel and cancel out.
Try it and be amazed. Audio engineers have known this trick since the dawn of disco.
Club culture was built around people dancing to music played on turntables. Specifically Technics SL1200 mk2 or SL1210 mk2 which only have a very little suspension in their feet.
If you run in mono and there will be almost no feedback no matter how loud you play or how close to the speakers you are.
Since one of the audio channels is inverted when recorded any signal feeding back will be cancelled out when the re-inverted signal is combined.
This is why old DJ mixers from people like Pioneer used have a prominent Stereo/Mono switch.
There's no real soundstage on a dance floor so you don't miss the stereo.
In the really cool venues, back in the day, they used crossovers to move just the high-hats or percussion to a specific speaker array hanging over the centre of the dance floor and have the mids and bass somewhere else but it would always be from a mono signal never stereo.
Source: Phono.
Aux Source: I worked as a DJ way back when and have experience of very loud systems in front of large crowds of dancing people. I've also played many a sketchy flat where everything was balanced on milk crates on wooden floorboards.