off topic I have dali opticon 2 mk2 as fronts and denon x4800h and svs pb 200 pro. I am getting svs ultra evolution at 100000 INR and dali opticon vokal at 75000 INR what should i buy? Will there be much issue if i mix svs
For surround sound, tonal balance is important. Speakers from different manufacturers may have a different tone, making transitions from speaker to speaker more obvious, thus diminishing the illusion the soundtrack is trying to create.
Having speakers from one manufacturer and a sub from a different manufacturer doesn't matter.
But having different manufacturers for front, centre and rear would not be a great idea.