All of you guys were completely wrong. There is no problem with the speaker. The problem was receiver. I will send you my detail project report later tonight and how the problem is resolved.
OK so here is the project report…..
Phase 1
I visited many of the electronics stores in Houston with my CD (Dire straits) and asked all of them to play same song using a pioneers receiver (if available) using 2 channel stereo. They played this CD again and again in different speakers (from $ 400 / pair to $ 16000/pair). Let’s not discuss on make and model. My overall conclusion was that some were ok, some good and some bad.
Phase 2
I went to a home theater store with my CD and asked him to play my CD on a 2 channel Integrated amplifiers or power amplifiers. These were played in at least 8 different speakers and out of these 8 I shortlisted just 2 sets. I had also packed my receiver (Pioneer SC 35) and kept it in my car and requested the shop manager that I would like to test these 2 shortlisted speakers with my receiver. If it sounds the same I will buy one of them. He agreed. I brought my receiver, hooked it up and bang. Same problem. Looks like the sound doesn’t have the punch and fullness. Even the manager agreed. We worked on my receiver controls and option but nothing. After working on it for an hour both of us gave us and agreed that It was strange. Let me tell you that the store owner is a veteran on audio and stereo equipment. He is about 60 year old and is associated with this field for 25 years.
Phase 3
We got a NAD power amplifier and connected that to the pre out of my pioneer receiver. This was connected to the same speaker that I had liked. But same problem.
Phase 4
The dealer had some old integrated amplifier (Onkyo Integra A 8800) and we connected this to the speaker that I had like and the sound was 10 times better than my receiver. I took this amplifier at home and connected my JBL ES 90 and man, it sounded toooo good . I couldn’t believe that it was the same old JBL. They had so much of power, punch and clarify that I was amazed. I could hear each and every instrument clearly and the sound was so crisp. They were 10 times better than any of the system that I heard in phase 1 above.
Conclusion :
Problem was receiver, not speaker. So I would like to buy a new 2 channel amplifiers / integrated amplifier. Please advice. I have already purchased the Onkyo Integra A 8800 (used) but would like to get something better.