m4n1akx Posted June 5, 2022 Report Share Posted June 5, 2022 Hello everyone. What test tone should I use for my HU until I get distortion? I've set the HU with 0db test tones until i got distortion on rca , then I moved to amp speaker output and switched to -7.5 db test tone until I've got distortion. Is this correct or I should also look for distortion on the HU with -7.5db tt (I want to use -7.5 on my system ) Link to comment Share on other sites More sharing options...
Dafaseles Posted June 6, 2022 Report Share Posted June 6, 2022 3 hours ago, m4n1akx said: Hello everyone. What test tone should I use for my HU until I get distortion? I've set the HU with 0db test tones until i got distortion on rca , then I moved to amp speaker output and switched to -7.5 db test tone until I've got distortion. Is this correct or I should also look for distortion on the HU with -7.5db tt (I want to use -7.5 on my system ) You did it correctly 2011 Chevy Silverado under construction My build log here. Check it out! Link to comment Share on other sites More sharing options...
SnowDrifter Posted June 7, 2022 Report Share Posted June 7, 2022 Yup this is the way. All sources, signal processors, equalizers, etc etc get set to 0db. The only item that gets set with overlap is the amplifier - the last link in the chain. The goal is to ensure a clean signal all the way through to the amp. If not, distortion / clipping is additive and you can end up with serious signal quality issues at the end of it. e.g. you set -5db on the head unit. Then you set -5db again on a signal processor/preamp. Then you set -5db again on your amplifier. Well now you have a -15db overlap which is going to be prime for sounding like junk and taking out your drivers. ~~~~~~~~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...
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