I am looking for a substitute for my B&W DM 220 speakers, my amplifier in a Denon PMA 920 of 105 w or 8 ohms, I attach photographs of the position of the speakers in the room, the gap available for each speaker is, 34 inch high, 21 inch wide and 23 inch deep approximately, my budget is 1800 pounds and I do not rule out second hand material