system has weak bass. any suggestions as to why?

Have you always lacked bass with this system or is this something new? If the answer is "always," I'd suggest that going direct from the Oppo to the power amp might be the issue. Some CD players (my Raysonic CD128 for example) do not take kindly to the absence of an active preamp in a system and sound generally bleached and undynamic without one, as I learned when taking my Raysonic to try in a friend's system that has a passive linestage. I also have a BDP-83SE and have never experienced weak bass from it via my Aesthetix Calypso linestage. Good luck, Dave

Is the bass weak everywhere in the room? ...or just in the listening position? Perhaps the listening position is location in a null bass point???

Try moving the speakers or listening position.

Just a thought...

LAK:The speakers are in phase. I reversed one speakers leads.Sound became diffuse. Bass became even weaker. Philojet:Tried zipcord 14 gauge 99.1% copper wire from home depot. Not much change. Surprisingly the zip cord did not sound to bad. Contemplating a double run of the 14 guage wire to see how it sounds. I also have another set of the Monster 1.5 cables that are N.I.B. However, I cannot bi-wire until I get a set of banana jacks due to limited space to attach speaker cables to rear of amp..Bullot: Interconnects are 1 meter in length. Speaker cables are 12ft. in length. The M7sis average approximately 6 ohms impedance. They are also approximately 87db sensitive/efficient. Dopogue: Yes this system has always lacked bass. I had it set up previously firing the long way in a 14X10 ft. Room. The sound was so disappointing that I boxed everything back up for the above mentioned 10+yrs. Weak bass included. I have an old Audio Research SP4 preamp that I put in line to see what would happen. Sound became Brighter on top with a softer/too soft midrange but no help on the lower end. Soulbrass: Due to space limitations (until I can finish cleaning my basement out). I am listening nearfield. The speakers are 2 1/2ft.out from the wall behind them. I have tried moving them from 2-5ft. from wall. The wall helps somewhat. Speakers are approximately 10ft. from both side walls. Rear of basement (direction that speakers are firing is asymmetrical). Speakers are 5ft. apart. Listening position is 5ft. back from and in between speakers. Thank You for your responses. I Will answer any replies as soon as possible.

I would recommend two things: Set up the speakers and your listening position EXACTLY (within an inch!) of what you get when following this guidance:

http://www.cardas.com/content.php?area=insights&content_id=26&pagestring=Room+Setup

The other is to experiment with super cheap bass trapping. Go to HD / Lowes / etc and buy four rolls of insulation. Stack them two high and put them in the rear corners. This should improve the bass response noticeably.

how big is the room they are in? have you walked around the room to see if bass increases in other areas?