SnowDrifter Posted October 28, 2010 Author Report Share Posted October 28, 2010 Ohms law homie Voltage = Current X resistance That is LAW and is always true. So if resistance goes down, current has to go up to keep the same voltage. How regulated amps work is they regulate the voltage to match the resistance so you get the same power at 1 ohm or 8 ohms. You see? Very clearly, thanks! ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444 Link to comment Share on other sites More sharing options...
mikeg321 Posted October 28, 2010 Report Share Posted October 28, 2010 I'm new to the world of car audio... What is THD? And how can a lower ohm load give more power than a higher ohm load? I know that it is harder for an amp to push the same amount of current through a higher ohm load... But if two different amps are designed to give the same amount of rms power, albeit at different levels of resistance, are the both still different? THD- Total harmonic distortion is a measure of the how much a given audio device may distort a signal through the introduction of added harmonics or overtones. These figures are usually given as percentages. THD figures below approximately 1% are inaudible to most people. However, distortion is a cumulative phenomenon, so that if a receiver, equalizer, signal processor, crossover, and amplifier are all rated at "no greater than 1%THD", together, they could produce 5%THD, which may well be noticeable in the perceived sound. Taken from here- http://www.stevemeadedesigns.com/board/topic/83029-everything-you-need-to-know-about-car-audio/ 4 fully loaded Fi sp4 15's 2 Crescendo bc5500s Crescendo c1100.4 6 focal mids Vifa tweets 5 XS Power d3100's Pioneer avh-p4200dvd All crammed into a mustang. http://www.stevemeadedesigns.com/board/topic/150569-mikeg321s-fi-nendo-mustang-getting-walled-videos-page-4/ Link to comment Share on other sites More sharing options...
AMI CUSTOMS Posted October 28, 2010 Report Share Posted October 28, 2010 In you can understand terms, THD means the amount of gain you add to the signal that is being played once it distorts in percentage. So if you have 10% THD then you will be making alot of power, BUT chances are the woofers won't last long with the level of power on them, POWER is what blows a woofer, NOT distortion. Power creats distortion because you are clipping the signal, a square wave makes more power then a sin wave. TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty Link to comment Share on other sites More sharing options...
skittlesRgood Posted October 28, 2010 Report Share Posted October 28, 2010 Ohms law homie Voltage = Current X resistance That is LAW and is always true. So if resistance goes down, current has to go up to keep the same voltage. How regulated amps work is they regulate the voltage to match the resistance so you get the same power at 1 ohm or 8 ohms. You see? well a regulated amp isnt that good. itll work for 1ohm and 2ohm but past that they will drop off like any amp. amps can be made to do more power at 2ohm than 1ohm but the vast majority will do more power at a lower ohm load. and as for "why?" well its less resistance, if one car has less drag itll go faster correct? same shit here. less opposition/resistance to the flow of electricity. but more current means more heat in the amp and heat is the #1 killer of amps. If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
AMI CUSTOMS Posted October 28, 2010 Report Share Posted October 28, 2010 well a regulated amp isnt that good. itll work for 1ohm and 2ohm but past that they will drop off like any amp. amps can be made to do more power at 2ohm than 1ohm but the vast majority will do more power at a lower ohm load. and as for "why?" well its less resistance, if one car has less drag itll go faster correct? same shit here. less opposition/resistance to the flow of electricity. but more current means more heat in the amp and heat is the #1 killer of amps. I have tested JL and Memphis amps, different model, they did same power at 1 ohm or 4 ohm or any in between. I was using a generalized point when I said 1 or 8 ohm, but in tested I have seen the same on regulated 1-4 ohm. TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty Link to comment Share on other sites More sharing options...
skittlesRgood Posted October 28, 2010 Report Share Posted October 28, 2010 In you can understand terms, THD means the amount of gain you add to the signal that is being played once it distorts in percentage. So if you have 10% THD then you will be making alot of power, BUT chances are the woofers won't last long with the level of power on them, POWER is what blows a woofer, NOT distortion. Power creats distortion because you are clipping the signal, a square wave makes more power then a sin wave. well... a clipped signal doesnt make more power just because its clipped. the amp is pushing the signal past a useable point but still adding power. the reason a clipped signal blows a speaker is because the speaker actually moves less and has a pause at the top and bottom of its throw. this means that the speaker isnt moving air around the coil like it should and isnt cooling properly. then it transforms into a slinky. If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
AMI CUSTOMS Posted October 28, 2010 Report Share Posted October 28, 2010 well... a clipped signal doesnt make more power just because its clipped. the amp is pushing the signal past a useable point but still adding power. the reason a clipped signal blows a speaker is because the speaker actually moves less and has a pause at the top and bottom of its throw. this means that the speaker isnt moving air around the coil like it should and isnt cooling properly. then it transforms into a slinky. All that you just said they have a word for, it is called over excursion....LOL TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty Link to comment Share on other sites More sharing options...
skittlesRgood Posted October 28, 2010 Report Share Posted October 28, 2010 I have tested JL and Memphis amps, different model, they did same power at 1 ohm or 4 ohm or any in between. I was using a generalized point when I said 1 or 8 ohm, but in tested I have seen the same on regulated 1-4 ohm. ic. i was going off of the RF constant power amps. i never read up on JL stuff lol. If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
AMI CUSTOMS Posted October 28, 2010 Report Share Posted October 28, 2010 ic. i was going off of the RF constant power amps. i never read up on JL stuff lol. And that is funny cuz I haven't ran or tested a rf amp since the punch 75, that was one amp that ran very damn hot!!! TEAM SOUNDQUBED -- TEAM SOUTH TEAM S.O.B. - Founder & Captain 3x Streetbeat World Record Holder 2017 MWSPL 1st place Mayhem & 4th Xtreme 4 2016 MWSPL 1st place Mayhem/2nd Adv 4/2nd Xtreme 4 2015 MWSPL 2nd place Mayhem & 4th Xtreme 4 2014 USACI 2nd place Streetbeat 5 - 162.6 db 2014 MWSPL 2nd place Xtreme 4 - 144.9 db 2013 USACI 1st place Streetbeat 4 - 161.9 db 2013 USACI 1st place Street Q+ - 162.8 db 2013 MWSPL 3rd Kaos2 & 4th Xtreme 4 2011 USACI 2nd place MOD 1001-2k - 160.0 db 2011 MWSPL 4th place: Adv3 - 157.8 db, Kaos2 - 150s db, Xtreme4 - 140s db 2010 ARSPL 1st place 501-750 - 160.3 db Arkansas loudest Best score to date 164.4 db - Termlab Outlaw Streetbeat 4 - 161.9 db Streetbeat 5 - 162.6 db MWSPL on Dash Legal door open (Music) - 162.5 db Sealed on dash Legal (Music) - 161.1 db - Termlab THE BLACK NASTY CURRENT BUILD & FAB The Black Nasty (6) 15 Rebuild Log 2012 (4) 15 Walled Sierra Build Log Evo X build log Facebook page The Black Nasty Link to comment Share on other sites More sharing options...
woodzyspl Posted October 28, 2010 Report Share Posted October 28, 2010 well acording to the "pro" (shop owner) near me better off buying higer end amp that put out same power at 2ohm then the cheaper at 1..aparently 2ohms sounds nicer then 1..but idunno bass to me all sounds the same the l7 sounds just as good as w7 to me LOL hope didnt offend any jl fans AUSTRALIA do i need say more? HU: some crap pionee AMP: dc 9k @ 18v SUB: 4 elevation audio sqx 12" Battery: 2 neuton power 8200d burp setup for fun 152's soon to come: rebuilt soundstream xxx (2 18" OR 3 15" wall) Bunch speakers, more batts and new HU Link to comment Share on other sites More sharing options...
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