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
Amplifiers
Gain With DMM Clarification
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="The_Quiet_One" data-source="post: 8395958" data-attributes="member: 614562"><p>No, it's not related to the phase of the subwoofer to which you are referring, that just "flips" the signal.</p><p></p><p>The ohms law you used is meant for DC. In AC you have a couple factors that give the end result that at any given point inductance, current, and voltage are not in sync so it can throw off your calculations by a bit (up to 30%-40%). In the case of subwoofers one of the biggies is the inductance. If you were trying to eek out all the power out of your amplifier then it would become an issue. Not to mention the clipping introduced by HU or source that someone cannot see with a DMM. I only mention it so any future readers will know it's not quite cut and dry as using Ohms law, but again in your scenario and with your previous research and listening habits I seriously doubt using the DMM method will adversely affect your equipment.</p></blockquote><p></p>
[QUOTE="The_Quiet_One, post: 8395958, member: 614562"] No, it's not related to the phase of the subwoofer to which you are referring, that just "flips" the signal. The ohms law you used is meant for DC. In AC you have a couple factors that give the end result that at any given point inductance, current, and voltage are not in sync so it can throw off your calculations by a bit (up to 30%-40%). In the case of subwoofers one of the biggies is the inductance. If you were trying to eek out all the power out of your amplifier then it would become an issue. Not to mention the clipping introduced by HU or source that someone cannot see with a DMM. I only mention it so any future readers will know it's not quite cut and dry as using Ohms law, but again in your scenario and with your previous research and listening habits I seriously doubt using the DMM method will adversely affect your equipment. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Equipment
Amplifiers
Gain With DMM Clarification
Top
Menu
Home
Refresh