Thanks for you reply.
I give more information. The room is indeed a small room, about 25 m², I usually sit 3,5 meters from the speakers, and i live in a flat, i have neighbours down and up
So, i will not put the volume very high. So, in this condition, do you think a small sub would be ok ?
You are right when you say my receiver i very old, that's true. But, does the sound of a modern receiver would be really that better ? Of course, i could have more possibilities with a modern recevier : ethernet/wifi connection, streaming for Qobuz, a mordern OSD etc... Well, but i do not know if i will have a truly better sound with something like Denon AVR-X1500H or a Marantz 1509/1609 NR. Maybe you know ?
As you can notice, i am quite attracted to Denon/Marantz, because i think it's a good combination with my Triangle speakers, but I am not really sure, maybe Yamaha, Onkyo or others would be better, do you have any ideas ? I use my system for 50% music and 50% movies, and I have a hifi Qobuz account.
Thanks again for your inputs