Need some audiogon expertise

Marakanetz, The frequency response is specified in the manual and it is within 1dB from 2 to 100khz. So i do believe it has the audible range covered. The preamp seems to be working perfectly absolutely dead quiet. Music comes out of the blackness. There is no noise present when i turn the volume controls. Not sure what you are talking about with global or negative feedback. The aragon is an ss amp by the way. Thanks for the input.

Celtic, in response to cables and interconnects. I have had radio shack ic's in other systems and never had a bass problem and i have always used 12 guage speaker cable so i am not sure if i can go along with that idea. Only because of my previous personal experiences with the same products.

Ozfly,this is a recent compilation of equipment gathered from reviews, chats, and what other users have had to say with each piece of equipment. All equipment is easily an 8/10 and some 9/10. Aragon is from 1993. Audible Illusions is from 1995. The Cal Icon is from 1990 but had been to factory in 1996 for powerboss upgrade and check up. Vmps or from 1993 and the sansui tuner is 1977.
In response to your questions,
1)System has been put together in last 6 months.Cables and ic's were purchased new.
2)Yes,both channels have the exact same trait.The highs are very smooth the midrange is slightly recessed (nature of the vmps).I can actually listen for hours and never be fatigued.In the midrange and highs its the best system i have ever had in my home.
3)Its just been thin from the first day i hooked it up.

Lindemman,as for equipment synergy everything sounds fantastic except for the thin bass. The difference i do have from other systems that i have owned is this one is on the short wall and my other systems were on the long wall. But i have heard so much talk about using the short wall with much better results that i have indeed set this fairly new system up that way.
Could it be possible that the room, with all these components that are considered to share in one common trait together,which is good bass, is the source of my problem?
I will try to find a test cd and i will also need to purchase a meter to test my frequencies, any recommendations?

Thanks all for you input.

Creeper, thanks for the input. Yes from all that own the tower 2/R's or the Super Tower R's there hasnt been one person i have heard complain of thin bass.

Sogood 51, when i purchased my tower 2 R's they were an easy 8/10. The original owner never touched the putty and it was in its factory position when i purchased them. I have removed about a small pea amount from each PR in hopes of correcting the problem. As far as using the bottom post i use the top posts with 12 guage jumpers to the bottom posts with switch in up position. I have read this is a great tweak to tighten bass and improve the image and tonal balance. John Casler is the one who brought the idea to the forefront and many are very pleased with the results. Now i am not sure if that might indeed be the reason that i am experiencing thin bass. Might need to give your idea a try. thanks.

Marakentz, lol. Seriously though i want to try and stay with my aragon if at all possible it is a very clean smooth sounding amp in my system. Don't really know what everyone means by bright if anything i would call it on the neutral to warm side more than bright.But that could be from the other components i have it matched with.

Jond, You might be on to something there. But thin is thin and i think i might have another issue here.

Elevick,I am very happy with the mids and highs and if i move them back closer to the wall i seem to lose the magic so i would like to look for another alternative. And as for the second part of your question its yes i ordered NOS 6H23-EB's from Kevin at Upscale Audio.

Sean, thanks for your comments and opinions. I might just need to rearrange my speakers to the long wall.I was trying to find other alternatives without having to make such a move but it might be necessary. A question about leaving my amp on all the time. Wouldnt that require me to leave my preamp on all the time as well? Reason i ask is because i was thinking that would wear out tubes rather quickly leaving the preamp on all the time and i was afraid to leave amp on and turn off preamp. I truly believe the synergy i have found with the amp and preamp is truly amazing in the midrange and highs. But i sure would like the added pleasure of some fuller bass.

Ozfly, the speakers are an 8/10 with no signs of wear on any drivers. All drivers are working perfectly. Another point you make on when i am up close to the speakers i do notice quite an increase in bass. Just seems not to be moving across the room. Not sure whether i could have a problem with crossovers but they sure are playing beautifully with the exception of thin bass.

Newbee, upper midrange emphasis gives me headaches and causes me to fatigue with time. I am not experiencing that with this combination of equipment at all. Thanks for the recommendation of an RS meter and test cd. I think that is something i really need to look into.

Alcides,thanks i appreciate your advice and recommendations.

Ljgj, thanks for the advice i will surely give the Peavey Kosmos a look.

Lpg, thanks for the input.

Nrchy, thanks for the recommendation and the confidence in the equipment matching. I will take a look at the site.

Gunbei, the dynamics of my system sound great to me. The instruments are sounding as they should. I am getting a nice wide soundstage, not incredibly deep but wide. As I increase the volume the bass does increase and the music comes alive. I just figured with this set up i would have more trouble with being overly bloated as to being shy. I really think i need to address placement at this time.

I spoke with Brian Chenney today and I informed him of the trouble. He asked about putty and I told him that I had removed about a pea size amount so far and he said that I wasnt there yet and keep going. Also he said to try removing the jumpers and just using the bottom posts with the switches down. I also informed him i was using an aragon and he said look elsewhere for the problem. It more than likely is setup with speakers or room. To much magic for me to believe i am having a synergy problem. Thanks all for the recommendations and advice I am going to start putting some of your knowledge to work.

Newbee, I do notice quite an improvement with volume. I think you make a very good point. I use to own very efficent speakers which didnt take much volume at all to get them playing very dynamic. Then i moved to a more warm speaker that took lots of power to make them sing and they didnt last long here in my home. With Vmps i do like the dynamics at low levels just seems to be a little thin. But I have found by walking around the room to different areas the bass is increased in specific locations. So with the combination of such a dynamic speaker that does need a certain amount of power and the present placement of my speakers i have created this weakness. I will be working on my placement at this time. Thanks for all the advice.

Bowbow, obviously you have never been part of a phenomena know as "brainstorming". If i didnt want the experts to come forward with their opinions i would not have asked for help.I would have just sat in dissappointment for another 6 months wondering what might be my next alternative.

Thanks again all for your advice and recommendations.

Gunbei, thanks for the advice. I was looking at my audible illuions L-1 manual and it states that the output impedance is 1.2Kohm. The aragon 4004 mkII does have an input impedance of 22Kohm. This tells me i am on the low side of the of the guidline range but also i am well within it at 18 times. Not completely sure that some of the problem doesnt lie in this area but with the dynamics as such i highly doubt it.