melody 2a3 mono amps

Sounds like the OPT (output transformers) are rolling off the bass and treble. A common problem with tube amps - both single-end and push-pull. Good big iron is expensive! Witness the Carver 275 amp with the small crappy transformers! For its high price a waste of money! I suggest getting a way more powerful amp - tube or transistor. A Crown XLS 1002 (200 wpc) would be a good match for the Paradigms. There is one for sale now on eBay for about $400.

ty J........i don't think u like tubes ?i'm still deciding . i picked up these pieces used but  have not had success. cost me 4000Cd 7 months ago. reason why was because my beloved creek5350se  bit the dust... caps i think. need a good repiar shop . im in bc canada and dont know where to send it for repair, would u know of a respectful repair shop?

I don't think the amps are a good match for your speakers. You need more efficient speakers for them to perform at their best. See the link below for some info on the amps:

Review

A couple thoughts - 

I am not familiar with your speakers. I run 93 dB efficient JBL monitors with less than 8 watts per speaker and they have loads of bass, but they are using 15 inch woofers. 

I think the suggestion to play around with the positioning of the speakers is a good place to start.

Good luck and please share your progress on your journey.

i have 2x melody 2a3 amps ...i run are paradigm studio100

I see the problem. You have no bass. Throw a good sub (or two) on your system, it will be a new world.