More directional speakers will produce higher SPLs at the sweet spot than less directional or omni design speakers. The reason should be apparent, its like the pressure generated by a garden hose nozzle delivering a focused stream of water versus one that is set to more of a spray pattern. With omni speakers, there is more leeway to up the volume further without being blasted out of the room, all other factors aside.
I percieve higher listening levels to be less fatiguing on my omnis as well in comparison to my more directional monitor speakers. With omnis, lots of power can really be put to good use with less danger of damaging your ears as well IMHO. The volume control position also depends on the source, my phono settings are considerably higher than ones for CD. The gain of an amp does not change. It will amplify the signal exactly the same regardless of the level of the signal, or it will try to.
So an amp rated WPC into 8 resistive ohms, with an input sensitivity of say 1 volt would give an output voltage of square root of times 8 or 40 volts. However, into an 8 ohm resistive load, this also translates into a current of square root of divided by 8 or 5 amps. However, peak current implies multiplying this by square root of 2 or 7. So, if the speaker can handle forty volts and 7.
But, it also comes down to movement of air. The signal coming from the amp to the speaker is translated into the movement of air to make sound. Therefore, for conventional speakers with cones, the cones actually move at a particular frequency, move air and thus makes sound. Trying to force a speaker cone to move too far or too fast or putting too much current or voltage through or across the speaker is what makes it break or fry.
All that said, if you have a volume control on your pre-amp, just keep it down to respectful levels and the speaker would never get close to seeing watts. Unless it shorts, then you have a very different problem. Seriously, most listeners would get blown out of the room at 20 WPC of clean signal and amplification. If you have meters on your equipment, you can see, you rarely if ever get max output power from the amp.
Not even close. Especially if your pre-amp's volume control is cranked down. One needs powerful amps for dynamics and especially for difficult speaker loads. That is why efficient horn speakers don't really need much power to drive them. If your amplifier has a larger power amp rating than your speakers designed to handle, problems will only occur if you crank up the volume and gain settings to ridiculously high levels.
Indeed, this would lead to the speakers being overpowered and potentially damaged. Some audiophiles claim that having an amplifier that is more powerful than your speakers is advantageous. This is based on the idea that it is better to have a little too much power at your disposal, rather than not having too little. If you kept them at sensible levels, the extra wattage provided by the amplifier could provide you with plenty of clean headroom.
If your amplifier exerted its maximum power at all times, pairing it with speakers that are incapable of handling that wattage would likely result in damage. If you set the volume to a low level, the power that is sent to the speakers is dramatically reduced. In the same way, the higher the volume, the more power the speakers will receive. The reason for this is quite simple. When speakers clip, the flat-line DC can cause irreparable damage to the tweeters. In extreme cases, other devices such as the crossover or the woofers may also be damaged.
Providing the amp has a fully-functioning volume control, the main risk is that the user pushes the levels too high and causes the signal to clip, essentially blowing the speaker! To illustrate this, consider the analogy of a fast car. The speed limit prevents the car from reaching its fastest speeds, but if the driver chooses to accelerate too far, they break the law. If they drive carefully and stick to the speed limit, there is minimal risk involved. In the same way, having an amplifier that is too powerful for the speakers is only a problem if the volume control is pushed too high.
Providing the user sticks to a sensible level, there is no risk of the speakers being damaged by unnecessary power.
Regardless of the power rating of your amplifier and speakers, you should always try to use them at a sensible volume. Nevertheless, some key concepts need to be discussed to fully understand the relationship between amplifier power and speaker performance.
These are impedance and sensitivity. Impedance is a great way of measuring the compatibility of your amplifier and speakers. Most speakers are rated somewhere between 4 and 8 ohms. If you run them at sensible volumes, no issues arise. However, you can ask the experts on how much amplification is a speaker with lead given its power handling rating. The recommendations are more for continuous power concerning power handling capabilities.
Most of the time more than high power is only two little power the damages speakers. There are also times where both things happen. Speakers and too powerful amps when connected with a continuous power rating, make the speakers struggle. The adverse situation arises when you run an amplifier that is too weak for the speakers connected to it. The amplifier will start burning of itself as you demand more power than it can create. This will create overheating. Finally, for proper handling important that will check the maximum power handling for both the speaker and the amplifier.
There is just one rule which is to choose an amplifier that outputs the correct continuous power phone to a volume level that you desire for.
0コメント