Originally Posted by
davef
Hi Pogre,
Very happy to hear that you have been enjoying the Sierra-2. Reference level at a 15 foot listening distance with a speaker rated at 86-87 dB sensitivity is very problematic. To reach 85dB from one speaker at this distance requires only about 20 watts of power into the speaker. The problem is that there is 20dB of headroom, such that reference level peaks = 105dB. To be able to reproduce these peaks at your listening distance with speakers rated at this sensitivity requires a massive 1600 watts of power. Your receiver or amplifier does not have that kind of power (nor can a speaker handle anywhere near this), thus you run the very real risk of causing your amp/receiver to clip badly. This can cause extensive damage to your speakers that is not covered under warranty.
At your listening distance, I highly recommend going with our towers, which have much higher sensitivity and can also handle more power.
Hope this makes sense!