The ELAC UB5s will deliver what you are looking for. Incredible bass capability in a neutral, detailed sound. They will need power though- a good hefty 100WPC.
@kalali- I have heard the JA Pulsars and without hesitation they are the best speakers I have ever heard and worth every penny of their $7700 retail price. Very good bass, excellent dynamics and an unparalleled clarity and transparency yet with sweetness and delicacy.
Other more costly speakers have more scale and can fill larger rooms (not that the Pulsars bad in this aspect) but they simply do not sound as good.
The Prisms (~ 3700 I believe) are not close to the sound of the Pulsars and can easily be beaten for the money- e.g. Harbeth C7ES3.
@kalali- I have heard the JA Pulsars and without hesitation they are the best speakers I have ever heard and worth every penny of their $7700 retail price. Very good bass, excellent dynamics and an unparalleled clarity and transparency yet with sweetness and delicacy.
Other more costly speakers have more scale and can fill larger rooms (not that the Pulsars bad in this aspect) but they simply do not sound as good.
The Prisms (~ 3700 I believe) are not close to the sound of the Pulsars and can easily be beaten for the money- e.g. Harbeth C7ES3.