Amplifier Specs

Simplistically the easy explanation is: "slew rate" is how fast the amp reacts to signal and delivers the output power and is related to amp design and output device specification; "damping factor" is the ability of the amp to "damp" the motion of the speaker cone and is related to the output impedence of the amp and the impedence of the speaker. Damping factor is also effected by the amount of feedback used in the amp circuit. Hope this helps? regards, Richard at www.vantageaudio.com

Hello Ken. There are many factors involved in determing "damping factor" and it depends on circuit design, so sometimes bigger is not always better. Damping factor is roughly the ratio of amp output impedence v speaker impedence. So if the amp is, say, 0.1 ohm and the speaker is 8 ohms the factor is approx 80. Negative feedback is used in circuit to control devices, for example transistors, and ensure they give a reasonable performance under repeat conditions. It basically tries to overcome the inherent shortcomings of the device in question and give better performance figures. This is a very rough and ready explanation which I hope helps. Regards, Richard.

You have to consider that speaker cones have a true damping that is determined by lots of factors, including the damping effect of the voice coil resistance. The amp impedence does not add much to the voice coil total resistance and in reality has little effect on the total damping. Speaker damping is usually engineered to achieve the desired low frequency rolloff. The aim here is to get a low damping figure for the speaker system as a whole to get the best bass response. But it is true that getting the right amp to match the speaker system still makes a huge difference.

You have to consider that speaker cones have a true damping that is determined by lots of factors, including the damping effect of the voice coil resistance. The amp impedence does not add much to the voice coil total resistance and in reality has little effect on the total damping. Speaker damping is usually engineered to achieve the desired low frequency rolloff. The aim here is to get a low damping figure for the speaker system as a whole to get the best bass response. But it is true that getting the right amp to match the speaker system still makes a huge difference. Richard at www.vantageaudio.com

Sorry, the above post was duplicated! Well, we are talking about "stereo" speakers here, yes? Richard.