Menu
Forum
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Car Audio Discussion
General Car Audio
Car Audio Build Logs
Car Audio Equipment
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Help
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Car Audio Classifieds
Car Audio Wanted
Classifieds Member Feedback
Gallery
New media
New comments
Search media
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Test
Forum
Search
Search titles only
Search titles only
Log in / Join
Search
Search titles only
Search titles only
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Menu
Reply to thread
Forum
Car Audio Discussion
General Car Audio
Sensitivity and Watt's Question
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="keep_hope_alive" data-source="post: 8659078" data-attributes="member: 576029"><p>Hi! Actually, output goes up by 3dB for every doubling of power. </p><p></p><p><a href="https://jlaudio.zendesk.com/hc/en-us/articles/217201737-Doubling-Power-vs-Doubling-Output" target="_blank">https://jlaudio.zendesk.com/hc/en-us/articles/217201737-Doubling-Power-vs-Doubling-Output</a></p><p></p><p>Sensitivity is one factor that you can use to evaluate speaker choices, but it's not the only factor. Some aspects of speaker design that improve sensitivity may sound worse. One difference between a dust cap and a phase plug is that the dust cap adds output (increases the sensitivity rating) but usually does so at the sacrifice of frequency response in the upper octaves. </p><p></p><p>In general, your thinking is correct that having a speaker system with higher sensitivity will be louder on a head unit. You can only plan on 5W being usable out of a head unit, all channels driven. Beyond that distortion becomes audible, and quickly. You should still be able to achieve a 93-95dBA output level which is plenty for HU power.</p><p></p><p>So, assume you find a speaker system with 90dB 1W &amp; 1M and you give it 4 clean watts of power - you can expect 96dB 4W @ 1M. In a car, you sit about 1 meter away from a speaker and about 2 meters from the rest. Overall output would be the logarithmic sum of all four speakers, getting you close to 100dBA of possible output - theoretically assuming no cancellation occurring. </p><p></p><p>My recommendation for piecing a system together is to buy what you want at the end, in steps. Sacrificing now and getting something cheaper isn't saving money if you plan on buying the better version later. Saving up for the good item is worth the wait (or finding it used for a fraction of the cost). </p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8659078, member: 576029"] Hi! Actually, output goes up by 3dB for every doubling of power. [URL="https://jlaudio.zendesk.com/hc/en-us/articles/217201737-Doubling-Power-vs-Doubling-Output"]https://jlaudio.zendesk.com/hc/en-us/articles/217201737-Doubling-Power-vs-Doubling-Output[/URL] Sensitivity is one factor that you can use to evaluate speaker choices, but it's not the only factor. Some aspects of speaker design that improve sensitivity may sound worse. One difference between a dust cap and a phase plug is that the dust cap adds output (increases the sensitivity rating) but usually does so at the sacrifice of frequency response in the upper octaves. In general, your thinking is correct that having a speaker system with higher sensitivity will be louder on a head unit. You can only plan on 5W being usable out of a head unit, all channels driven. Beyond that distortion becomes audible, and quickly. You should still be able to achieve a 93-95dBA output level which is plenty for HU power. So, assume you find a speaker system with 90dB 1W & 1M and you give it 4 clean watts of power - you can expect 96dB 4W @ 1M. In a car, you sit about 1 meter away from a speaker and about 2 meters from the rest. Overall output would be the logarithmic sum of all four speakers, getting you close to 100dBA of possible output - theoretically assuming no cancellation occurring. My recommendation for piecing a system together is to buy what you want at the end, in steps. Sacrificing now and getting something cheaper isn't saving money if you plan on buying the better version later. Saving up for the good item is worth the wait (or finding it used for a fraction of the cost). [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Discussion
General Car Audio
Sensitivity and Watt's Question
Top
Menu
Home
Refresh