Advice on Equipment Upgrade

Your room is, "open on the long wall end." You're not questioning boomy bass so IMO, with proper speaker setup and subwoofer adjustment you should be fine. Typically high level subwoofer connection can have a very slight supportive affect on mid bass but I don't think that is what you're hearing.

I would begin by inspecting your stylist with a magnifying glass for dirt or damage. Then completely recheck your cartridge and tonearm adjustments. Raise or lower the arms vertical tracking for best sound.

A Denon 103 or some other cartridge might be a better match for that arm.

I think Acman3 asked a key question. Does your digital source sound ok in the midbass and it's just analog that sounds weak there? Out of curiosity, how do you find the digital sound overall in your system (i.e. strengths/weaknesses) and what is your digital source (I don't see any mention of one)?

i MOVE A LOT AND i ALWAYS SEEM TO GET STUCK IN CRAPPY ROOMS..i HAVE TO LIVE WITH IT. I dont like my system on the 2nd floor its awful ...the first floor is the way to go. Yes the room is small. I have tried smaller speakers in hear like Epos Es22. The Sound is much better with the Dynaudios. If you know about the Rel it just gives me what the dyns dont deliver in the low end.And does a great job at this.If I take it out of the system I lose a lot of low end information. I dampin this room with screens in the rear and side walls and rear wall.I like to listen at a loud level. Rock and Jazz. I have no digital source right now. I was using a Mcintosh CD player hooked Directly to the Amplifier with a Nordost XLR cable. It sounded really Fast and a lot of balls all across the range but like most digital it is way too dynamic and I'm hooked on vinyl agian so thats what im trying to improve it. I think I'm going to play with the VTA and invest in a good Phono Preamp and see what that does. I wanna thank all of you for the great advice. Every one of you had great input. Thanks.

I don't disagree with any of the other comments, however I still think the pre/power impedance match is less than what is considered to be an acceptable minimum. Take a look at this thread, especially the first response by Almarg.

http://forum.audiogon.com/cgi-bin/fr.pl?aamps&1341955108&openfrom&1&4#1

Mattmiller, The Epos es22 is another floor standing speaker costing 50% less. The Dynaudios should sound better. I'm not getting your point. One more thing that should be considered with large speakers in a small room is the cabinet is a large reflective surface that can contribute to additional problems with the sound.