Izsssakmixer...You are absolutely right about having all speakers the same.
However, if you are part of a jazz jam session, or if you play in a classical string chamber group (eg: quartet), or even if you hear these in a small room without actually playing, you would be very familiar with the sound of different instruments all around you. Also there are so- called "Antiphonal" compositions that specifically call for two or more chiors or groups of instruments located apart from each other. There is a new SACD where E Power Biggs plays Bach fugues on the four organs in the cathedral of Freiburg, and the musical phrases are "answered" back and forth between organs in a most interesting way. Handel's "Water Music" works well in multichannel...imagine yourself floating down the river with barges of musicians floating along with you. (That's how Handel intended it to be performed). In Judy Collins recording of "Amazing Grace" Judy is front and center while the congregation is around and behind you. (This was not sold as a quadraphonic LP, but this particular song is the best example of matrix quad that I know of). At the end of the song, (on the LP more than the remastered CD) as the reverb dies away, you can hear people behind you putting their Hymn books back into the racks. As the saying goes "you are there". The cannons of the 1812 Overture are rarely located on stage. Etc...Etc..Etc.
Sure, multichannel recordings can be inappropriately mastered, but don't fall into the "I only have 2 ears" ridiculing of all multichannel discs that make serious use of the rear speakers.
However, if you are part of a jazz jam session, or if you play in a classical string chamber group (eg: quartet), or even if you hear these in a small room without actually playing, you would be very familiar with the sound of different instruments all around you. Also there are so- called "Antiphonal" compositions that specifically call for two or more chiors or groups of instruments located apart from each other. There is a new SACD where E Power Biggs plays Bach fugues on the four organs in the cathedral of Freiburg, and the musical phrases are "answered" back and forth between organs in a most interesting way. Handel's "Water Music" works well in multichannel...imagine yourself floating down the river with barges of musicians floating along with you. (That's how Handel intended it to be performed). In Judy Collins recording of "Amazing Grace" Judy is front and center while the congregation is around and behind you. (This was not sold as a quadraphonic LP, but this particular song is the best example of matrix quad that I know of). At the end of the song, (on the LP more than the remastered CD) as the reverb dies away, you can hear people behind you putting their Hymn books back into the racks. As the saying goes "you are there". The cannons of the 1812 Overture are rarely located on stage. Etc...Etc..Etc.
Sure, multichannel recordings can be inappropriately mastered, but don't fall into the "I only have 2 ears" ridiculing of all multichannel discs that make serious use of the rear speakers.