* Make all of your changes and leave it all in for 100 hours. Then decide
Remember, speaker position can make a difference to sound and some say listener position can to.
* Keep the speakers straight and not toed-in. This will help to avoid 'beaming' of the high frequencies from the tweeters and may reduce brightness a little. Some speakers need to beam directly to the listener to get the best soundstage (Proac?) but the RS1s don't.
* Sit with the tweeter below your ear level. According to Sonus Faber having the tweeter level with or above your ear may increase brightness. Having them below will help reduce brightness. Some people even place their speakers upside down to get the desired effect. Have a play.
* Keep the speakers
somewhat near to a rear wall, tuning the bass to taste and reinforcing it with the wall. Extra bass, particularly the warmer, slower bass from wall reinforcement can help give the illusion that the sound is less bright. Subs play this trick on the mind rather well too.
* Keep them away from side walls to avoid reflections that may make a bright sound worse.
* Place a nice, thick rug on the floor in front of the speakers to help deaden room acoustics (reflections).
* Drawer the curtains.
* Stand the CDP and amp on separate shelves/units and isolate them with a granite saucepan block from Tescos, with half squash balls underneath to act as feet.
* Keep interconnects and speaker wire away from mains wires. I cable tie I/Cs together in four places to keep things tidy.
* Put whitetak under each corner of each speaker on the stands.
If this lot fails to help the brightness then change the speakers to something that suits the room, your taste, the music and the electronics.
Gasp.