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
Log in / Join
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 Equipment
Speakers
Midbass
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="helotaxi" data-source="post: 2934842" data-attributes="member: 550915"><p>That's exactly what he's saying. Things to consider: the sensitivity rating that you normally see is db @ 1m @ 2.83v. 2.83V equals 1 W into an 8 ohm load. It equals 2W into a 4 ohm load and 4W into 2 ohms. If 3 speakers all have the same sensitivity rating of 93dB @ 2.83V/1m and one is 8ohm, one is 4 ohm and one is 2 ohm, which is more sensitive? The 8ohm driver is only getting 1W and is creating the same amount of sound as the other two getting 2x and 4x the power respectively. It takes power to make power and as impedance decreases and current increases, resistive losses in the amp increase. Running an 8 ohm driver would allow the amp to run cooler and draw less power from the electrical system of the car compared to the same amp trying to get the same output from a 2 ohm driver with the same rated efficiency. Factor in that the amp will probably be able to produce more voltage into the higher load and the 8ohm driver will probably get louder overall as well.</p><p></p><p>This is all true for mid/high freq drivers. If you want the driver to play lower, it gets a lot more complicated because cone excursion away from the rest position where Bl is strongest changes Bl and all the other driver parameters. The larger the excursion, the larger the change. Mid/high freq drivers barely move at all and their motor strength remains nearly constant across its power and freq range.</p><p></p><p></p><p>You are grossly over simplifying a very complex situation that you clearly don't understand. Let me know how that works out for you.</p></blockquote><p></p>
[QUOTE="helotaxi, post: 2934842, member: 550915"] That's exactly what he's saying. Things to consider: the sensitivity rating that you normally see is db @ 1m @ 2.83v. 2.83V equals 1 W into an 8 ohm load. It equals 2W into a 4 ohm load and 4W into 2 ohms. If 3 speakers all have the same sensitivity rating of 93dB @ 2.83V/1m and one is 8ohm, one is 4 ohm and one is 2 ohm, which is more sensitive? The 8ohm driver is only getting 1W and is creating the same amount of sound as the other two getting 2x and 4x the power respectively. It takes power to make power and as impedance decreases and current increases, resistive losses in the amp increase. Running an 8 ohm driver would allow the amp to run cooler and draw less power from the electrical system of the car compared to the same amp trying to get the same output from a 2 ohm driver with the same rated efficiency. Factor in that the amp will probably be able to produce more voltage into the higher load and the 8ohm driver will probably get louder overall as well. This is all true for mid/high freq drivers. If you want the driver to play lower, it gets a lot more complicated because cone excursion away from the rest position where Bl is strongest changes Bl and all the other driver parameters. The larger the excursion, the larger the change. Mid/high freq drivers barely move at all and their motor strength remains nearly constant across its power and freq range. You are grossly over simplifying a very complex situation that you clearly don't understand. Let me know how that works out for you. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Equipment
Speakers
Midbass
Top
Menu
Home
Refresh