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Nikhil N
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When I have gone through spec of amplifier, I saw 30W for output. Is it mean that even if I am connecting a load of less impedance, say 30ohm, will I get 30V output voltage across the load?
.Scott said:You're maximum output voltage is 70.7 volts.
It's a standard for some sound systems - although perhaps not if it's just 30W.jim hardy said:Where did that come from?
.Scott said:It's a standard for some sound systems - although perhaps not if it's just 30W.
It's actually a maximum of 70.7Vrms. It puts the maximum DC at 100V.
If it's not a 70.7 volt system, it probably doesn't really "clip". Instead, it just gets muddy - or pops a breaker.
Andy SV said:Oh ok a pa
Its just for calculation I took as 30ohm, Actually I have load of 12ohmAndy SV said:Are you sure that's 30 ohms? Cuz that's a lot
Maybe a guitar amp?
This is the amplifier I am using. I was using it last few days, but it is not working nowadays. So I am looking for a new amplifier to buy which suits for my experiment. Is there any problem, if we have switched on the amplifier without load? I read some where, for class D we should not turn on without load.davenn said:yeah ... very different to a home stereo which will be either 4 Ohm or 8 OhmWe really need the OP @Nikhil N to come back and clarify what he is talking about so that we all don't have to make wild guessesDave
Good thing you finally posted the specs.Nikhil N said:When I have gone through spec of amplifier, I saw 30W for output. Is it mean that even if I am connecting a load of less impedance, say 30ohm, will I get 30V output voltage across the load?
What is the meaning of 30W amplifier?
Thanks for this detailed replay.jim hardy said:Lepai ? They're only about twenty bucks US
Their true power is a fraction of what's advertised, Google will find test reports that show true power is overstated by about 4X.
To OP's original question,
The meaning is it should deliver thirty watts into its load.
Marketeers of audio stuff know how to lie with statistics
real useable power is called "RMS" which is not exactly taking the average but very similar.
For a very brief instant an amplifier can deliver watts nearly equal to (its supply voltage squared ) divided by (resistance of its load) ..
That is called 'Peak Instantaneous Power" and it's a pure marketing ploy "of dubious integrity", to borrow a phrase from Janis Ian...
It can deliver that power for only milliseconds not continuously.
Note the Lepai with supply voltage of nominal 12 volts and a load of four ohms might claim "peak instantaneous power" of perhaps almost 122 / 4 = 36 watts , and they do claim 30.
I'd expect realistically seven to twelve.
Manufacturers can include an internal booster power supply to give the amplifier higher voltage, which is how those preposterous car "Boomer " amps work, but don't expect that in your ten dollar Lepai.
Here's an article to peruse, written by engineers for anyone who wants to learn.
http://www.ti.com/lit/an/slea047a/slea047a.pdf
old jim
The "30W" in "30W amplifier" refers to the power output of the amplifier. It indicates that the amplifier can produce a maximum power output of 30 watts.
A 30W amplifier is considered a mid-range amplifier in terms of power output. It is more powerful than a low-wattage amplifier, which typically ranges from 5-10 watts, but less powerful than high-wattage amplifiers that can produce 50 watts or more.
Yes, a 30W amplifier can be used for a variety of audio equipment, including speakers, headphones, and musical instruments. However, it is important to check the compatibility of the amplifier with the specific equipment before use.
No, a 30W amplifier is not typically suitable for large venues or events. It may not be powerful enough to provide adequate sound coverage for a larger space and may result in distortion or poor sound quality. In these cases, a higher-wattage amplifier would be more suitable.
Yes, a 30W amplifier can be used for both home and professional use. It is a versatile option that can provide enough power for personal use at home and may also be suitable for small professional settings, such as recording studios or small live performances.