A lot depends on what you mean by "loud". These days, playing in the mid 80 dB range sounds pretty loud to me. However, some people would be in the 100 dB range before they think the music is loud.
Consider buying an inexpensive sound level meter from Radio Shack (about $50 or so) and see just how loud your preferred level really is.
Dynaudio says the Focus 140 is a 4 ohm speaker with a sensitivity of 86 dB. They are not a speaker a head-banger would normally choose. The 4 ohm impedance can be challenging for some amps, and sensitivity is a bit on the low side.
The best advice is to simply watch for any distortion that is a sign of clipping as clipping is the real speaker killer. Back off the volume the second you hear any signs of distress.
Consider buying an inexpensive sound level meter from Radio Shack (about $50 or so) and see just how loud your preferred level really is.
Dynaudio says the Focus 140 is a 4 ohm speaker with a sensitivity of 86 dB. They are not a speaker a head-banger would normally choose. The 4 ohm impedance can be challenging for some amps, and sensitivity is a bit on the low side.
The best advice is to simply watch for any distortion that is a sign of clipping as clipping is the real speaker killer. Back off the volume the second you hear any signs of distress.