System too bassy - Primaluna & Usher


I'm looking for advice on how to tame my bass. Since upgrading my amp to the Primaluna Dialogue One from a low end Harmon Kardon, I've noticed my fatigue level from the bass has shortened my listening times drastically. That could also be because listening levels are higher because of the increased power. Regardless, I would like to tame the bass which these Ushers are known for.

THE SETUP:

Lossless Files
Apple TV > unknown decent quality optical cable to...
Rega Dac > low end Monster RCA cable to
Primaluna Dialogue One > $3 ft speaker cable to
Usher Be-718 speakers
VTI Metal stands

The room is 12' X 13' with one side open concept into the rest of the condo. The wall that the system is against is actually a couple of feet shorter because of the HVAC system, which puts one speaker in a corner.

I just got the Primaluna amp and I love the Ushers and do really like the Rega Dac. So I'm not willing to change those.

MY THOUGHTS:

I'm thinking of interconnects, speaker cables and room acoustics. I think room acoustics is a must regardless. Perhaps I do that first, then look at the total sound.

What are your thoughts?
deetothevee
Mattmiller - Which cables would you recommend? Here is a review of my systems strengths/weaknesses.

Sweet midrange - 90%
Soundstage - 65%
High end detail - 75%
Controlled tight bass - 40% (this might be much better with new speaker placement)
Realism - 80%
Dynamics - 80%
Morrow Audio cables, OR 2 runs of Kimber 8tc...your speakers have 2 sets of inputs so I would run 2 sets of cables per side for best sound stage and bass definition. For a few hundred dollars or less you can get these cables. It will make a HUGE difference. Happy listening.
I read that the Coincident CST interconnects were a less bass heavy cable so I bought a set. They work well in my system.
Abuck - thank you I'll check then out. How about the rest of the frequency?

Mattmiller - why those specific kimbers? Help me understand this double speaker wire thing. How do I do that with my primaluna dialog one? It only has a 0ohm and 4ohm or 8ohm connector for left and right speaker. How can I use 2 speaker wires for each speaker? I thought biwiring was if you want to power each speaker with its own power amp.
When you say morrow audio cables do you mean both interconnect & speaker wire? I found a decent deal on kimber hero rca.