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 Help
Wiring, Electrical & Installation
Nuub Help. Dont Flame.
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="its_ray_ray" data-source="post: 6367174" data-attributes="member: 596131"><p>i have never actually used my dmm to set all settings on my amps. i have always been a "by the ear" kind of guy. well my old dmm took a **** on me. so i bought a new one yesterday. can anyone explain to me how to use this formula and what-not.</p><p></p><p>i'm going to be running the audiopipe ap-3002 i picked up. and i will be running it bridged @ 4 ohms.</p><p></p><p>Can anyone explain how to use the forumla so i can tune my amp? lol</p><p></p><p>AP-3002</p><p></p><p>Frequency Response</p><p></p><p>20Hz – 20kHz</p><p></p><p>Signal to noise ratio</p><p></p><p>110dB</p><p></p><p>Channel separation</p><p></p><p>&gt;75dB</p><p></p><p>Total harmonic distortion</p><p></p><p>Speaker impedance</p><p></p><p>2 ohm to 4 ohm</p><p></p><p>Input sensitivity</p><p></p><p>0.25V – 8V</p><p></p><p>Crossover frequency</p><p></p><p>55Hz – 5.5Khz 12dB stereo</p><p></p><p>Bass boost</p><p></p><p>0 – 18dB @ 45Hz</p><p></p><p>Output power (RMS)</p><p></p><p>Stereo 2 CH – 160W x 2 @ 4 ohms</p><p></p><p>Stereo 2 CH – 320W x 2 @ 2 ohms</p><p></p><p>Bridged 1 CH – 640W x 1 @ 4 ohms</p><p></p><p>P = Power in watts</p><p></p><p>I = Current in amperes</p><p></p><p>R = Resistance in ohms (effectively the nominal impedance)</p><p></p><p>V = Potential in volts (Voltage)</p><p></p><p>Knowns:</p><p></p><p>Resistance (nominal impedance of your speakers)</p><p></p><p>Power (desired wattage)</p><p></p><p>Unknowns:</p><p></p><p>Voltage (we'll measure this)</p><p></p><p>Current</p><p></p><p>Formulas:</p><p></p><p>P = I*V (formula for power)</p><p></p><p>V = I*R (Ohm's law)</p><p></p><p>So after a little substitution to get Voltage in terms of simply power and resistance we get</p><p></p><p>V = square_root(P*R)</p></blockquote><p></p>
[QUOTE="its_ray_ray, post: 6367174, member: 596131"] i have never actually used my dmm to set all settings on my amps. i have always been a "by the ear" kind of guy. well my old dmm took a **** on me. so i bought a new one yesterday. can anyone explain to me how to use this formula and what-not. i'm going to be running the audiopipe ap-3002 i picked up. and i will be running it bridged @ 4 ohms. Can anyone explain how to use the forumla so i can tune my amp? lol AP-3002 Frequency Response 20Hz – 20kHz Signal to noise ratio 110dB Channel separation >75dB Total harmonic distortion Speaker impedance 2 ohm to 4 ohm Input sensitivity 0.25V – 8V Crossover frequency 55Hz – 5.5Khz 12dB stereo Bass boost 0 – 18dB @ 45Hz Output power (RMS) Stereo 2 CH – 160W x 2 @ 4 ohms Stereo 2 CH – 320W x 2 @ 2 ohms Bridged 1 CH – 640W x 1 @ 4 ohms P = Power in watts I = Current in amperes R = Resistance in ohms (effectively the nominal impedance) V = Potential in volts (Voltage) Knowns: Resistance (nominal impedance of your speakers) Power (desired wattage) Unknowns: Voltage (we'll measure this) Current Formulas: P = I*V (formula for power) V = I*R (Ohm's law) So after a little substitution to get Voltage in terms of simply power and resistance we get V = square_root(P*R) [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Help
Wiring, Electrical & Installation
Nuub Help. Dont Flame.
Top
Menu
Home
Refresh