I use these speakers for over 1year now and I find them really well, they have a very good performance in both lower than in acute. Small nuances of buying them we found a slight decrease in power when it had operated at full power for several hours. This is not never reproduced after the first 3 nights. 2nd small and nuance the filter inside is fragile and easily falls, then transported to the grave prudence.SI you will start to sizzle acute, but the problem resolves PA in your store nearest you and free play 3years of guarantees. At the conclusion of very good speakers at a very affordable price I highly recommend it. Personally I use them with a 2 amp in monobridge intermediate R300. Also I have the link to a mackie subwoofer and the result of 600WRMS and really impressive!! Good buy