The power of the speakers in relation to the power of the amplifier.

Apart from the fact that the power of the amplifier at 4ohm will be lower than those given 20w at 3ohm - nothing will happen. It would happen if it was the other way around, i.e. the impedance of the speakers was lower than the min. the impedance of the amplifier.

I can see that the experts themselves are speaking (and I heard ...)
Okay, let's systematize:
Tomek Okurowski wrote in Auto Świecie how he burned it with Chinese radio for PLN 100 Goerlich speakers for x thousand. zloty. The radio has an 8W RMS tip, but with 80% THD MAX

For full-range loudspeakers (two and three-way systems) - an amplifier with a power lower or the same as the loudspeaker.

Subwoofers like power, some better models accept more than the rated power.
In fact, you should look for good amplifiers with low distortion and a high damping factor (DF).
Do not be influenced by power.
A high-quality amplifier usually has a high DF (e.g. above 200) and then it can have 50W RMS and will sound like a thunderbolt. A low-quality, cheap amplifier will have a lot of power, but a weak DF (below 80) and the sound will be empty ...

I recommend the new Hifonics models. Since Germany has ruled this brand, the company has once again steered towards Hi-End.
For example, the Hifonics TXi3400 that I recently installed on my friend has 4x85W RMS (at 2 Ohm) and 4x55W RMS, but it looks live (heavy as a devil !!!) and sounds like it has 4x100W RMS! In addition, really sensational HPF filters combined with LPF (i.e. band-pass) are like a combination of an LPF filter for bass with a subsonic filter.

Overall, the impressions are very positive. What I like about Hifonics is the bass control remote. Only Hifonics offers a 4-channel remote control, and the remote control is an epochal invention.
Why will the pilot ask a simple man?
And we do this:

1. we fire up the muse
2. we give the pilot's potentiometer to the minimum
3.Gently turn up the volume with the remote control until the bass is complete with the sound from the speakers
And we have a perfect tuning, the bass does not hum, only sounds gentle.

And the 4-channel amplifier. with the remote control, we can connect 1 RCA pair to the radio, so we can have a cheap radio with 1x RCA !!!

There is a rule of thumb! If the amplifier says that you can connect speakers with an impedance from 4 to 8?, it is obvious that you cannot connect a 2? speaker !!! because the amplifier will damage! It is known that a 4 ? speaker will play louder than an 8 ? speaker at the same volume level! And that's because the 4 ? speaker will get more current! Just "OHMA Law" And when it comes to matching speaker power to amplifier and vice versa, never it is allowed to connect to a loudspeaker amplifier with lower power than the amplifier gives us! we have an amplifier 2 x 100W, the speaker per channel must not be smaller than the 100W! because if it is 80W or less, it will burn quickly! My rule is that the speaker should be 20% stronger than the given amplifier channel! at least! it doesn't happen if we connect a 300W speaker to a 100W amplifier, we just use the power of the 100W amplifier, but the speaker will be used in 33%. burn both of them. Of course, the power I described above applies to the "RMS" power is the rated value, the real one! Effective. Do not confuse it with the musical power - the instantaneous value.

Magnatseba and BerniReload, you are investigating a topic from 4 years ago

Maybe the admin will take pity and kill this topic.
To tell you the truth, there is no great wisdom in it, and on the basis of such information, myths about "strong powers" and "weak powers" appear later

If the topic is circulating and nobody finishes it, each piece of information contributes something different

BerniReload if these posts contributed something valuable to the thread, maybe it would still get away, but they don't. Why should we not connect weaker speakers to a stronger amplifier? I have 35W RMS speakers under the 110W RMS amplifier and the sub 150W RMS under the bridge which gives 380W RMS. There are speakers that can absorb much more power than the one on the paper without any damage. And stop giving so many exclamation points on each post because it's annoying.

I agree with you when it comes to connecting weak speakers to a more powerful amplifier, because what is the signal level for? but does it make sense to buy speakers, e.g. 50W for a 500W amplifier? and reduce the signal level? it's like transporting 2 people by bus you can do that too, for this there is something like the right loudspeaker to amplifier selection but this is not a forum to argue, to wisdom (because it does not have the wisest head in the world), but to draw conclusions together, exchange opinions, diagnoses.

If you agree that you can connect a weaker speaker to a more powerful amplifier, why did you write in the previous post that you must not do this because it may burn the speaker. It is only up to the listener's caution whether the loudspeaker will burn out and when. And the power of the amplifier has nothing to say here, because you can burn a loudspeaker with a weak or a powerful amplifier just as quickly. There is no rule how to match the power of the loudspeakers to the amplifier and vice versa. It all depends on the specific speakers and amplifiers. There are speakers that like power and must have as much power as on a piece of paper or more, and there are those that will be satisfied with half of what the manufacturer wrote. Equally important is the DF and the distortion level as Magnatseba wrote.

Most young people like what? Playing loud! And explain to those who want to have equipment where they will be full and will be happy for a long time ... Every amplifier and every loudspeaker will play together, but what if we like to make it full? then you have to think about whether I have the right equipment, that I can give it as much as possible ... because the amplifier will burn ... whether the speaker will burn ... There are various speakers and amplifiers on sale for a reason ... all you need is money and a little knowledge (unless we do not have it, then the Audio Car service remains) to create a specific audio system!

BerniReload wrote:

Most young people like what? Playing loud! And explain to those who want to have equipment where they will be full and will be happy for a long time ... Every amplifier and every loudspeaker will play together, but what if we like to make it full? then you have to think about whether I have the right equipment, that I can give it as much as possible ... because the amplifier will burn ... whether the speaker will burn ... There are various speakers and amplifiers on sale for a reason ... all you need is money and a little knowledge (unless we do not have it, then the Audio Car service remains) to create a specific audio system!

Even the right equipment will not help you for such stupidity. Because what will prevent such a youngster from starting the gain because he is playing too poorly. And then even if it had speakers matched to the amplifier, it would burn them with overdrive.

For example, I very often managed to smoke the Hifonics TXI-1500D amplifier, where it had 2 Kicker CVR subwoofers connected - 400W RMS, together both 800W RMS with the connected configuration I had 1000W RMS 2? at the output of the amplifier. both speakers got 100W RMS for one too much! and the signal level on the amplifier was completely! and what happened? the amplifier burned during distortions! during distortions, where we hear that the sound is not clean at the full power of the amplifier (where the speakers have a spare, of course), the final transistors suffer the most, they heat up terribly. And this case of mine is really interesting ... maybe just mine the amplifier is unlucky or something.

And how do you know that they got 100W too much. Maybe they were still not enough. And the fact that you have given the sensitivity of the amplifier to the maximum is your own stupidity. Apparently, these subs were still able to swallow a bit of distortion, but the amplifier was pulling with the last of its strength at that moment and that's why it fell. And how do you know that only distortion caused it to burn. There are many other factors that may have helped this amp burn out.

While playing I connected the probe from Fluke 120 oscilloscope option ammeter between plus to Hifonics and took 84A, and the instantaneous values were higher! And I know that the amplifier has good efficiency, also 84A multiplied by the voltage that had 12.5V gives us 1050W. So the speakers had Too little? and after their springs I had the impression that they would be torn out! I know what I am writing, because 14 years old deals with this topic Audio Car and I repaired a lot and broke a lot, not to mention how much money was spent on it.

14 years of CA practicing and bragging about hardware damage.

I close.