I’m thinking of a 165w rms per channel amp for midbass. Mid bass specs narrowed down to either 100w rms to 200 peak or 120w to 170w peak. So pretty similar. Does an amp usually have more power? So 165rms means it can burst 200w no problem at all. Just wandering about a general rule of thumb might be when looking at amps. That a 165w rms amp channel can burst to 1.5x power no problem. So need to match amp rms to peak speaker handling. Thanks.
You can't just blindly use numbers to prevent damaging speakers. You have to use your senses to know when the speakers have had enough. You should also know that your ears cannot detect low levels of distortion at high audio levels. Most people don't realize how distorted their system is (at the point where they think it's clean) until you tell them to get out of the car and listen to it from 30, 40, 50ft away. Then the distortion is obvious.
Speaker ratings are typically useless.
RMS power doesn't actually exist.
The way I use RMS power is when RMS voltage is driven into a given load. 50v RMS into 2 ohms would be 1250w RMS. Not a legitimate number but useful when making measurements.
By the same token, peak voltage is 1.4 x RMS voltage and gives 2x RMS power. 1.4 x 50v RMS = 70v peak. That gives you 2500w peak.
Understand that the power ratings for amps, unless CEA certified, are as useless as speaker ratings unless they are given by a reputable amp manufacturer. Many amps have been dyno'd on YT so you can get an idea of what's legitimate and what's garbage for power output.
Speaker ratings are typically useless.
RMS power doesn't actually exist.
The way I use RMS power is when RMS voltage is driven into a given load. 50v RMS into 2 ohms would be 1250w RMS. Not a legitimate number but useful when making measurements.
By the same token, peak voltage is 1.4 x RMS voltage and gives 2x RMS power. 1.4 x 50v RMS = 70v peak. That gives you 2500w peak.
Understand that the power ratings for amps, unless CEA certified, are as useless as speaker ratings unless they are given by a reputable amp manufacturer. Many amps have been dyno'd on YT so you can get an idea of what's legitimate and what's garbage for power output.
The peak power of an amplifier depends on how much transient current it can provide with minimal supply voltage droop. Since 1W for 1s maybe easily re-written as 1kW for 1ms, it has little significance in practical engineering.
A loudspeaker is usually alright if its excursion limits are not exceeded. However, they can take some extra power for a small time without getting damaged. A professional loudspeaker is often wired with an amplifier that has double its power rating. However, many operators think it is customary to have a 3dB headroom in the amplifier.
A loudspeaker is usually alright if its excursion limits are not exceeded. However, they can take some extra power for a small time without getting damaged. A professional loudspeaker is often wired with an amplifier that has double its power rating. However, many operators think it is customary to have a 3dB headroom in the amplifier.
"RMS power" does exist, and it is the same as just plain power. It is calculated from the RMS voltage into a resistive load.
The RMS voltage creates the same heating effect in a resistive load as the same DC voltage.
How long an amplifier can sustain this power is another matter. Also, speaker crossovers can cause peak current
from the amplifier to be much higher than the current for a resistive load.
The RMS voltage creates the same heating effect in a resistive load as the same DC voltage.
How long an amplifier can sustain this power is another matter. Also, speaker crossovers can cause peak current
from the amplifier to be much higher than the current for a resistive load.
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In physics/electronics, RMS power isn't a real value. You have average power that's what RMS power is supposed to be.
Due to all the confusion for many years in the audio industry about the various meanings and types of power,
calling audio amplifier power "RMS power" as a colloquial term is perfectly reasonable, and helps to clarify that
the power is calculated from the measured RMS voltage into a resistive load. The use of the term "RMS power"
does not, and is not intended to, imply that the "instantaneous power" waveform is used to calculate its own RMS value.
calling audio amplifier power "RMS power" as a colloquial term is perfectly reasonable, and helps to clarify that
the power is calculated from the measured RMS voltage into a resistive load. The use of the term "RMS power"
does not, and is not intended to, imply that the "instantaneous power" waveform is used to calculate its own RMS value.
From my point of view, power has no time component. RMS/peak power can be any length of time. For a legitimate amplifier's ratings, the amp should be able to produce full rated power into its lowest rated load continuously. Very few can.
The transient current mentioned earlier was likely for mains-powered equipment where the rail caps are recharged by a low-frequency sine wave. Car audio has an almost constant re-charging of the rail caps and very little change in voltage other than that due to DC resistance in the various conductors.
The transient current mentioned earlier was likely for mains-powered equipment where the rail caps are recharged by a low-frequency sine wave. Car audio has an almost constant re-charging of the rail caps and very little change in voltage other than that due to DC resistance in the various conductors.
I have a pretty tiny footprint to work with. 2-seater coupe. D class amps it is then. Focal 8 inch door midbass if doesn’t require crazy customising or the the Brax 6.5 door midbass. The question regarding rms was all about the midbass really for a 8x165w amp. I’d bridge maybe but that’s 500w which is crazy
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