kacernator said:Is 7W push-pull enough for small room cca 4x3 meters and 90dB efficient speakers?
Lets guess 2.5 m ceilings
AndrewT said:maximum average listening level of 85 to 86db. This I would consider as turned up loud. I normally listen at about 10db lower than this, i.e. about 75db or roughly equal to conversation level. The benefit of improved overhead for transients of about 30db gives a cleaner signal.
7W will reduce the maximum level by about 12db.
Reduced transient overhead of 8db or reduced average level of 73db.
Which do you find more acceptable?
Jeb-D. said:However, if your using a 90dB full range driver. You can pretty much bet your going to add a BSC circuit if you want any bass out of it. This will leave you with 3-6dB less for the midrange and highs. In this case you may be right at the border of "not enough juice" and would probably be best off going with something in the 94dB range.
So far i've only had one were i really felt the need for a BSC circuit ... and they were probably in the low 80s by the time i was done with them. With a 50W or so Pioneer they play plenty loud for their application.