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Help me build a nice system from the ground up
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<blockquote data-quote="Hardworkingman32" data-source="post: 8750885" data-attributes="member: 683236"><p>Thank you guys. I think I have it set up correctly now, but I want to be sure.</p><p>I'm pushing 39.92-39.97v out of the recommended 40.00v at a volume of 47 of 62. 47 is 75% of my volume which is the max volume I will play my music at when driving. Its not where distortion is its just 75% of the total volume. The 6800BT seems to play clear up to a volume of 56, but I figured 75% is a good cutoff point so the speakers don't get damaged.</p><p></p><p>400watts would be 40v at 4 ohms.</p><p></p><p>My single 2 ohm 12" DVC sub is wired in series at an output of 4 ohms. So is 4 ohms the resistance I need to be using to get 400 watts of power, because that breaks down to 40v max to keep the subs right that their rms rating, but not exceed it. Do I add the two voice coils together to get the resistance I need to use under ohms law or do I use 2 ohms like sub is called since it is a 2 ohms dvc sub? Thanks</p><p></p><p>I know that music is dynamic, but I want to be sure I am not using too much power on my new 110 amp alternator. I have been thru 3 batteries and 2 alternators so far in eight years. I think its due to me running my audio system too high. I have had alot of problems out of my electrical system with this car so I feel like this method is safer.</p><p></p><p>According to ohms law 400w at 4 ohms only uses 40v | 10 amps out of my 110 amp alternator, but if I should configure it for 2 ohms let me know, because thats 28.28v | 14.14 amps out of 110 amp alternator.</p><p></p><p>When I configured the sub for 40.00v for a 4 ohm load using a DMM I did the following.</p><p>Step 1). I reset the headunit first.</p><p>Step 2). Once it had reset it. I set the EQ from the default powerful mode to flat eventhough for some reason pioneer headunits default to the powerful mode, next I went to speaker level controls and turned the subwoofer up to 10. I left the fronts and rears at 0, then I switched over to bluetooth and re-paired my phone for BT use, then while I was in bluetooth settings I turned the SLA setting up to 4.</p><p>Step 3). Finally I turned off all bass boost both on the headunit and the amp, turned off all loudness on the headunit, turned off all lpf/hpf filters in the headunit itself, but I set the amp's lpf to 80hz, then I turned the gain up slowly watching the voltage until it reached 39.92-39.97v</p><p></p><p>During my configuration I used this exact 40hz test tone under bluetooth mode</p><p>[MEDIA=youtube]g1ZaJERyd4s[/MEDIA]</p><p></p><p></p><p>Did I do it right using the DMM or did I miss a step on my configuration that I need to correct?</p><p>Thanks</p><p></p><p></p><p>I really want to be sure on my voltage setting that I did here.</p><p>My sub is Rockford Fosgate P3 Shallow Mount 2 Ohm DVC 12". Its capable of 400w RMS/800 Peak</p><p>Do I use a 4 ohm voltage load or a 2 ohm voltage load when configuring. It seems like my sub is wired in series.</p><p>Given the fact voice coil 1 red has a jumper wire going to voice coil 2 black. Then the speaker wire connected to voice coil 1 black and voice coil 2 red.</p><p></p><p></p><p>The sub box itself says its a P3SD2-12</p><p></p><p>I used this calculator to get amps and voltages</p><p>[URL unfurl="true"]https://ohmslawcalculator.com/ohms-law-calculator[/URL]</p></blockquote><p></p>
[QUOTE="Hardworkingman32, post: 8750885, member: 683236"] Thank you guys. I think I have it set up correctly now, but I want to be sure. I'm pushing 39.92-39.97v out of the recommended 40.00v at a volume of 47 of 62. 47 is 75% of my volume which is the max volume I will play my music at when driving. Its not where distortion is its just 75% of the total volume. The 6800BT seems to play clear up to a volume of 56, but I figured 75% is a good cutoff point so the speakers don't get damaged. 400watts would be 40v at 4 ohms. My single 2 ohm 12" DVC sub is wired in series at an output of 4 ohms. So is 4 ohms the resistance I need to be using to get 400 watts of power, because that breaks down to 40v max to keep the subs right that their rms rating, but not exceed it. Do I add the two voice coils together to get the resistance I need to use under ohms law or do I use 2 ohms like sub is called since it is a 2 ohms dvc sub? Thanks I know that music is dynamic, but I want to be sure I am not using too much power on my new 110 amp alternator. I have been thru 3 batteries and 2 alternators so far in eight years. I think its due to me running my audio system too high. I have had alot of problems out of my electrical system with this car so I feel like this method is safer. According to ohms law 400w at 4 ohms only uses 40v | 10 amps out of my 110 amp alternator, but if I should configure it for 2 ohms let me know, because thats 28.28v | 14.14 amps out of 110 amp alternator. When I configured the sub for 40.00v for a 4 ohm load using a DMM I did the following. Step 1). I reset the headunit first. Step 2). Once it had reset it. I set the EQ from the default powerful mode to flat eventhough for some reason pioneer headunits default to the powerful mode, next I went to speaker level controls and turned the subwoofer up to 10. I left the fronts and rears at 0, then I switched over to bluetooth and re-paired my phone for BT use, then while I was in bluetooth settings I turned the SLA setting up to 4. Step 3). Finally I turned off all bass boost both on the headunit and the amp, turned off all loudness on the headunit, turned off all lpf/hpf filters in the headunit itself, but I set the amp's lpf to 80hz, then I turned the gain up slowly watching the voltage until it reached 39.92-39.97v During my configuration I used this exact 40hz test tone under bluetooth mode [MEDIA=youtube]g1ZaJERyd4s[/MEDIA] Did I do it right using the DMM or did I miss a step on my configuration that I need to correct? Thanks I really want to be sure on my voltage setting that I did here. My sub is Rockford Fosgate P3 Shallow Mount 2 Ohm DVC 12". Its capable of 400w RMS/800 Peak Do I use a 4 ohm voltage load or a 2 ohm voltage load when configuring. It seems like my sub is wired in series. Given the fact voice coil 1 red has a jumper wire going to voice coil 2 black. Then the speaker wire connected to voice coil 1 black and voice coil 2 red. The sub box itself says its a P3SD2-12 I used this calculator to get amps and voltages [URL unfurl="true"]https://ohmslawcalculator.com/ohms-law-calculator[/URL] [/QUOTE]
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