If you have two speakers, one is watts and the other is 50 watts, the first will have twice the power of the second. However, when you double the power of the amp and speaker, you only get an increase of 3dB SPL. The sensitivity of a speaker affects how clear its sound is at high volumes and low wattage. Sensitivity refers to the ability of a speaker to convert the electrical energy that comes to them into acoustical energy.
Most modern Bluetooth speakers are highly efficient unlike dynamic moving coil speakers in bass amps. An efficient speaker should convert most of the energy to audio energy and not heat.
The rating above means that the speaker offers 80 decibels with one watt when measured a distance of one meter from the speaker. Less efficient speakers have a lower number. If a speaker is highly sensitive, it will only require a small amount of power to produce loud sound and be clear. Less sensitive or less efficient speakers could have a high wattage and still produce low volume and distorted sound. Granted, you need better quality speakers and not necessarily high wattage speakers.
With such a speaker, you get 80dB when you power it with 1W and you measure at a distance of 1m. If you multiply the original power by ten, so the speaker is powered by 10W, the SPL increases to 90dB. An increase of 10dB means twice as much as the perceived sound. Some speakers can handle more power that their rating.
You can increase the SPL measure of a speaker by increasing the power that goes to the speaker. From the above example, you see that it takes so much power, wattage, to double the perceived loudness of a speaker. You can, therefore, choose wattage depending on how loud you need your speaker to be.
However, if your speaker is less sensitive, it will still produce a less SPL measure even at high power. If you need a speaker that operates excellent at low power, you need one that is more sensitive. Such a speaker will give you dB with 1 watt of power. This is more than what the first speaker generated with 10 watts. That's a cabs design flaw that's causing the issue, not the speaker.
In another case, maybe the speaker sounds dull and not much better if the treble is cranked. It may be that speaker rolls off too low and no matter how much treble you pump into it, the cone just wont produce those higher frequencies.
Too much bass, maybe the cab is too large for the speakers. There's allot of factors here and we haven't even looked at the head yet. The tough part however is guitar speakers are not high fidelity. Neither are the amp heads. A Hi Fi produces frequencies from 20hz to 20,hz so the ear hears everything within the hearing range.
Live instrument amps are comprised of amps and speakers that only need to produce specific frequency ranges. You don't need nor would you want guitar amps producing lows and sub lows. That's the job for the bass amp. You have your Vocal horns, snare and cymbals up there and its only going to interfere with those sounds up there. The PA isn't even full fidelity in most cases. They are designed to reject feedback and unless you have a modified setup, most PA's will roll off above 12K and below hz depending on the cab sizes.
Its response can be carved up to allow other instruments to cut through like keyboards, horns, snare etc. It may not even sound that great solo but in that mix, live or studio with other instruments its all about how that sound comes through without masking or being masked by other instruments. From there its getting the right sounds for the specific musical composition being played and being able to use your best playing techniques using that sound.
Best you can ask for is a versatile amp that has a wide range of adjustment if you play allot of different types of music. If you are limited to one genre then you can of course hot rod things for that specific sound you need, but you trade off versatility when you do that.
If you want a cranked Marshall tone, you really need a good Marshall head and likely British speakers to get that sound. If you try and dial up warm Fender tones on that same amp, the chances of getting close are unlikely. This is one reason why Modeling amps are so popular now. You don't have to buy 4 or 5 separate rigs to get those separate tones. Speakers still make a difference but allot of that has to do with presence and how near or far back in the mix you need to on stage sound to be.
From there you can mic it and bring it way out front if you need to. You can post now and register later. If you have an account, sign in now to post with your account. Note: Your post will require moderator approval before it will be visible. Paste as plain text instead. Only 75 emoji are allowed. Display as a link instead. Clear editor. Upload or insert images from URL. Share More sharing options Followers 0. Reply to this topic Start new topic.
Recommended Posts. Before we go any further, let's be clear on what amplifier power provides: it defines the upper limit of how loud your speakers can play without distorting.
So if loudness is a big priority, buy as much power and the biggest speakers you can afford; if you listen at fairly moderate volume, don't worry about your receiver or amplifier's power rating. For most people, 50 watts will be more than enough, and Denon's least expensive receiver, the AVR , is rated at watts per channel. Watts come cheaply nowadays; sound quality can get expensive.
A few weeks ago while visiting an audiophile friend with very efficient Zu SuperFly speakers, I listened to his 2 x 5-watt Almarro AA amplifier. But our focus is on choosing the loudest speaker, and the bottom line is that increasing the sensitivity rating of a speaker increases loudness with a certain amount of wattage. We already know the general rule: doubling amplifier power increases speaker output by 3 dB.
A power increase to 10 watts means that 10 watts are a part of the doubling of 8 watts to 16 watts, but at the lower end of that doubling, so it only results in an extra 1 dB of sound output. These assessments of sound output are all based on being 1 meter from the speaker. What happens if you move away from the speaker? And again, like sensitivity, a general rule applies:. In terms of SPL, there is a decrease of 6 dBs for each doubling of distance. The loss of 6 dB per 1 meter applies to an ideal acoustic environment like outdoors where there are no walls or ceilings for the sound to bounce off.
Indoors the loss will be less but by how much depends on the sound absorbency of the wall, floor and ceiling materials and the presence of furniture or other objects.
So sound volume fades as we move away from a speaker. To be heard further away, all we need to do is increase the output of the speaker, right? To determine the maximum loudness that such a speaker can reach we need to perform a calculation. Sensitivity is a rating that describes the base loudness of a speaker given 1 watt of power.
Combine the two, and you get the maximum loudness of a speaker known as Maximum SPL.
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