- What is the 3dB rule?
- Why would you use an attenuator?
- Why 3dB is cut off?
- Does 0 dB mean no sound?
- Is 100 watt amp too loud?
- Is 3dB a big difference?
- How do you gain dB?
- Do attenuators really work?
- What is the best guitar amp attenuator?
- Do expensive speakers sound better?
- Can you gig with a 20 watt tube amp?
- What does 3dB per octave mean?
- Do attenuators damage amps?
- Do amps affect sound quality?
- Do speakers sound better with more power?
- How loud is a 20w tube amp?
- How loud can a 50 watt amp get?
- Why do tube amps sound better loud?
- Can you hear 0 dB?
- What does a 10 db attenuator do?
- Why are attenuators so expensive?
- What is 3 dB gain?
- What is 0 dB gain?
What is the 3dB rule?
3dB rule when measuring noise at work When you measure noise levels with a noise meter, you measure the intensity of noise in units called decibels, expressed as dB(A).
It is based on orders of magnitude, rather than a standard linear scale, so each mark on the decibel scale is the previous mark multiplied by a value..
Why would you use an attenuator?
Fixed attenuators in circuits are used to lower voltage, dissipate power, and to improve impedance matching. In measuring signals, attenuator pads or adapters are used to lower the amplitude of the signal a known amount to enable measurements, or to protect the measuring device from signal levels that might damage it.
Why 3dB is cut off?
It’s because decibels are logarithmic, and the log (base 10) of 3 is about 50% power. So the 3 decibel cutoff is where power drops off by a half. Generally speaking, a filter’s cutoff frequency is not necessarily defined at -3dB.
Does 0 dB mean no sound?
What is sound? Humans can hear sounds between 0 and 140 decibels. 0 decibel does not mean that there is no sound, merely that we cannot hear it. 0 decibel is the so-called hearing threshold for the human ear.
Is 100 watt amp too loud?
The magic of a high-wattage tube head is not so much about volume as it is about HEADROOM. Simply put, you can turn a 100-watt amp up as loud as you need to and it’s going to deliver the goods anyway. … A 100-watt amplifier is no different.
Is 3dB a big difference?
1/2 the power = –3dB”. A change of 6 dB is accepted as a significant difference in level for any listener listening to speech or music. It is a quite noticeable increase or decrease in loudness.
How do you gain dB?
Gain is defined as the ratio of the output power to the input power in dB. Assume that the input power is 10 mW (+10 dBm) and the output power is 1 W (1000 mW, +30 dBm). The ratio will be 1000/10 = 100, and the gain will be 10 * log 100 = 20 dB.
Do attenuators really work?
Yes volume attenuators really work. … The Weber and hotplate attenuators I have tried, work great too. They might have a bit of tone loss when you really back the volume down to extremely quiet levels. Some of these units have tone controls or switches to combat this tone loss.
What is the best guitar amp attenuator?
The 4 Best Amp Attenuators – My Top PicksRivera RockCrusher.Two Notes Torpedo Reload.Weber MicroMass.KLD PB-1.
Do expensive speakers sound better?
So, are expensive speakers better? Generally, expensive speakers will do a better job than budget speakers, particularly if you’re looking for the truest audio quality. However, it’s more important to make sure the speakers do what you need, rather than focusing on the price tag.
Can you gig with a 20 watt tube amp?
A 20-watt guitar amp is pretty loud compared to sounds in the normal world, but in a band situation it may not be enough. … At 40 watts the Marshall DSL40 is a great combo amp for gigging, but you may be able to go even smaller.
What does 3dB per octave mean?
“Decibels per octave” is a way of expressing how quickly the response, or gain of a circuit changes as the frequency of the signal changes. … -6 dB per octave means that lower frequencies are Amplified less (half the frequency will have one half the power).
Do attenuators damage amps?
Power Attenuators can Damage your Amp: If you connect the fan (or just make sure that your attenuator isn’t getting too hot) and connect your power attenuator correctly, there is no reason a correctly functioning power attenuator would harm your amp.
Do amps affect sound quality?
A better amp will make your speakers play louder and sound better, but it won’t make bad speakers sound like good speakers. Many speakers have a “maximum wattage rating” on the back. … High-end amplifier companies make amps with more than 1,000 watts, and you could plug in a $50 speaker into it with no problem.
Do speakers sound better with more power?
The assumption is that the more watts a device can output, the better, louder sound it will produce. … Yes, it’s true that the higher the power (watts), the louder and cleaner the speakers will play. Small differences in power, however, don’t make much of an audible change.
How loud is a 20w tube amp?
The 20-watt amp is double the power of the 10-watt amp, but doubling the power only translates to an increase of 3 dB SPL. Remember, in order to sound “twice as loud,” you need an increase of 10dB, so while a 20W amplifier will sound noticeably louder than a 10W amp, it will not sound twice as loud.
How loud can a 50 watt amp get?
The Marshall, while called a 50 watt amp, actually makes about 67 watts. It feeds 4 12″ Celestion Greenback speakers each making 97db at one watt, at one meter. One speaker gives 97db, doubling that to 2 speakers gives you 3 more dB and doubling again to 4 speakers gives you 3 more.
Why do tube amps sound better loud?
Because valve/tube amps have an output transformer causes the amp to have a ‘high output impedance’. … This is a form of distortion, as the speaker is not following exactly the signal the amplifier is feeding to the speaker. This is the only reason a tube amp ‘can’ sound louder than a elderly transistor amp design.
Can you hear 0 dB?
As far as loudness is concerned, humans can typically hear starting at 0 dB. Sounds that are more than 85dB can be dangerous for your hearing in the case of prolonged exposure.
What does a 10 db attenuator do?
The FAM-10 in-line attenuator can be inserted to coaxial cable feeds to reduce signal levels. Combinations of attenuators may be used together to create the exact signal loss needed.
Why are attenuators so expensive?
Making a suitable reactive dummy load or attenuator is much more costly than building a simple resistive load, as it includes coils, capacitors and resistors. … That may still end up being too loud, in which case you should experiment with larger series resistors.
What is 3 dB gain?
bandwidth expressed in 3dB is called 3dB bandwidth. you are asking the significance of 3dB point. it is the point at which the power at output is half than input. it is a convention that till the power at output drops to half, performance can be tolerated, so the bandwidth is define by 3dB point.
What is 0 dB gain?
The amplification factor, also called gain , is the extent to which an analog amplifier boosts the strength of a signal . … If the output-to-input signal power ratio is 1:1, then the amplification factor is 0 dB. Power amplifiers typically have gain figures from a few decibels up to about 20 dB.