Gmc14 Posted January 1, 2018 Report Share Posted January 1, 2018 Please point me to the right direction i already tried the serach button before posting... I have a pioneer hu, with rear speakers conected straight to the stereo, dd1 shows distortion at 48/62 volume, my fronts are conected to a kenwood 4 channel amp and through the amp the rca, my dd1 shows distortion at 61/62 volume, to which volume do i set the gains. 48 on deck or 61 on rca Kenwood kac 649s running front 2 channels pioneer coax 25rms, rear bridged fr 8" diamond audio sub 110 rms Pioneer deck running front a pillar factory tweeters and rear pioneer 6x9 rated 30rms Thanks in advance Quote Link to comment Share on other sites More sharing options...
audiofanaticz Posted January 1, 2018 Report Share Posted January 1, 2018 If your using the internal deck amplifier for ANY speakers you want to set all aftermarket amps to the max volume that your radios internal amp is distortion free. So in your case volume 48 is what you tune everything around. Quote Link to comment Share on other sites More sharing options...
Gmc14 Posted January 1, 2018 Author Report Share Posted January 1, 2018 Thanks, that didnt take long, Ill set it to 48 until i run everithing through the rca's 61 Quote Link to comment Share on other sites More sharing options...
Gmc14 Posted January 13, 2018 Author Report Share Posted January 13, 2018 I decided to go withouth the rear speakers, my bass amp is a boss ce3800d feeding my little 8" diamond audio 110 rms, pioneer dxt-4069bt All eq settings to flat, hpf off, subwoofer filter i set to 200hz @ 0 (-24to+6) in my stereo, Volume at 61/62 -5 db 40hz.then used a formula i found on sonic electronix watts x ohm sqare root 110rms x 4ohm= 440 sq.root 20.97 volts as my target voltage Subsonic filter all the way down 15hz, bass boost to 0, lpf to the highest point on the amp 150hz, i set the gain to read 20volts on my multimeter... it was very quiet... Then i a set the gain till the dd1 showed distortion, and played with the sub setting on my stereo lpf 200hz -6 gave me 20volts and was able to go up to 0 and sounded louder, is this safe to do? I got the 8" diamond till i buld a box for my 12" premier Quote Link to comment Share on other sites More sharing options...
Kyblack76 Posted January 13, 2018 Report Share Posted January 13, 2018 Has DD1, but uses multimeter method to set gains. Im lost as shit.... Quote SMD SUPER SELLER The Burban Build Blazer Build sold Acura trunk build sold Link to comment Share on other sites More sharing options...
Gmc14 Posted January 13, 2018 Author Report Share Posted January 13, 2018 Kyblack76, so it would be ok to max out the amp, and burn the little sub? Thats why i used the dmm. I set the amp for my front speakers with the dd1 and it sounds fine Quote Link to comment Share on other sites More sharing options...
bcbrassard Posted January 13, 2018 Report Share Posted January 13, 2018 DD-1 has tracks for setting subs. Max would not be one of them. Front speakers sound fine? if set with DD-1 should see no distortion and set properly. Quote Link to comment Share on other sites More sharing options...
Gmc14 Posted January 13, 2018 Author Report Share Posted January 13, 2018 (edited) Bc, i set the bass amp 40hz -5db to the point before distrtion, out of curiosity i checked the voltage and was +-44 vlts going to the little sub. Can anybody convert 44 volts how many watts would that be? The case is i dont want to burn a perfectly good sub Ac volts x ac volts / speaker ohm = peak power Peak power ÷ 2 = rms 44 volts x 44 volts = 1936 ÷ 4 ohm 484 watts peak power from my amp 484 ÷ 2= 242watts rms. Which is double what my sub handles Edited January 13, 2018 by Gmc14 Quote Link to comment Share on other sites More sharing options...
bcbrassard Posted January 13, 2018 Report Share Posted January 13, 2018 I would turn it down more, double rated could cause smoke! just saying... And nothing wrong with having some headroom on that but like you stated no point in blowing a perfectly good sub. Quote Link to comment Share on other sites More sharing options...
reedal Posted January 13, 2018 Report Share Posted January 13, 2018 while the math looks good on paper, it doesn't take into account the rest of the factors that affect the amount of power your amplifier will output. your DCR might be 4ohm, but the reactive load your amp sees will not be 4ohm. the amp will never see 4ohm once power is applied to the load. you could very well leave your amp gain at the level determined using the DD-1 using the -5dB overlap track, and not risk hurting your sub, because you will not have 242 watts output at all times, and likely will have less than RMS power going to your sub most of the time. You can turn it down as a precautionary measure, but I personally do not feel it's needed. Quote SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
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