mechanix619 Posted December 11, 2014 Report Share Posted December 11, 2014 (edited) I can see as independnat tests, 40HZ and 1kHZ both showing no distortion at full volume, but when trying to find the distortion level of the deck per the instructions its mathematically impossible to land at full volume. Maybe I'm doing this incorrectly, the instructions and YouTube videos aren't consistent. 5. Play track 1 on test CD, turn the volume control up until you see the signal detect LED illuminate. 6. Continue turning up the headunit and you should see the 40Hz Detect LED illuminate. 7. Slowly continue turning up the headunit until the Distortion LED illuminates, then turn headunit down slowly until it goes out. Note the volume setting. 8. If you have a full range amplifier, change to track 2. Repeat the steps 3 - 5 above, this time noting the 1kHz Detect LED. 9. Now take the noted maximum volume settings from the 40Hz test and the 1kHz test and average them. This is your maximum undistorted volume setting for the headunit. My deck has a max volume of 40. It didn't distort with the 40Hz test tone so my initial number is 40. I played track two and noted the 1kHz detection volume, which was 22. I averaged those resulting in 31 as my max undistorted volume. Edited December 11, 2014 by mechanix619 Quote Link to comment Share on other sites More sharing options...
Jessica Posted December 11, 2014 Report Share Posted December 11, 2014 Averaging is bad in your situation. Are you using the speaker out for the 1khz test? Quote Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
mechanix619 Posted December 11, 2014 Report Share Posted December 11, 2014 I'm running the tests at the amp. For the 1kHZ test I'm simply turning the volumn up until 1kHZ detection light is illuminated. So I start from zero volume until the 1kHZ is detected. Quote Link to comment Share on other sites More sharing options...
alaskanzx5 Posted December 11, 2014 Report Share Posted December 11, 2014 My 80prs can reach full volume 1khz 0db. Max again with 40hz -5db. Turn sub level all the way up and with a 40 hz -5db tone I can still reach 61/62. So yes a head unit can reach full volume and be clean doing so. But the same one can be slight lower then full volume depending settings. Quote t1500bdcp 2 t2d4 15" 1 t600.4 1 t400.2 1 set p1 tweets singer alt, tons of wiring, smd vm-1, 80prs, back seat delete, still in the works, aiming for a 145-147 with the ability to play 25hz up to 50hz. Link to comment Share on other sites More sharing options...
mechanix619 Posted December 11, 2014 Report Share Posted December 11, 2014 (edited) You're reaching max volume with the 40HZ tone but where does the detect light, not distortion light, come on with the 1kHZ test tone? Based on the instructions the max undistored volume is the average of two tests. Edited December 11, 2014 by mechanix619 Quote Link to comment Share on other sites More sharing options...
Jessica Posted December 11, 2014 Report Share Posted December 11, 2014 Average is not between detect and distortion. Average is the distortion of 1k and 40hz Quote Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
Jessica Posted December 11, 2014 Report Share Posted December 11, 2014 (edited) If you get distortion at volume 22 with 1k test tone and volume 40 with the 40hz then your average would be 31. But that would be a bad way to do it. How are you distorting at volume 22? Are you using a line driver or something? If not I would turn up sub out till it distorts at 22 or close and use that volume to set gains. Otherwise you are gonna distort the hell out of your mids at volume 31 Edited December 11, 2014 by strangeduck Quote Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
Jessica Posted December 11, 2014 Report Share Posted December 11, 2014 Wait. I am replying to the wrong person. Damn you mechanix Quote Rest in peace, walled 87 accord build log 03' Corolla build with AA Mayhem inside. My super random youtube channel and terrible camera work. Wiring comparison by CaptainzPlanetz Wire and fuse guide by Guest SyKo13 Link to comment Share on other sites More sharing options...
mechanix619 Posted December 12, 2014 Report Share Posted December 12, 2014 (edited) Average is not between detect and distortion. Average is the distortion of 1k and 40hz Not according to the instructions. 8. If you have a full range amplifier, change to track 2. Repeat the steps 3-5 above, this time noting the 1kHz Detect LED. 9. Now take the noted maximum volume settings from the 40Hz test and the 1kHz test and average them. This is your maximum undistorted volume setting for the headunit Edited December 12, 2014 by mechanix619 Quote Link to comment Share on other sites More sharing options...
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