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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 )

Hello everyone I'm pretty new to car audio so I would like to learn. Thank you very much for your time reading this and helping if you can I have read a lot of forums about setting the gains and a lot of them says to tune by ear , but I don't feel like I can tell the difference and I'm afraid to not damage the speakers if set incorrectly. I don't have an o-scope , only a DMM . I know how to set the gains with a DMM but I've heard this is not the right way... So I have a 5 channel amp , 1 ch to each door , and a sub. The speakers are 100w rms, 4 ohm each , and the amp can put out the same power for each ch. The sub is 500w rms 4ohm , again the amp can do the same. So I have set the gains using a DMM , HU on 75% then adjust the gain until I've reached the correct voltage (20v for each ch and 44v for sub ) . I set them with test tones of 0db... now i've read that this is not right...( AGAIN ) , and should use a -5db or even -10db test tone. I've been running this setup for 1 year , and I feel like it's not powerful enough , i think even my small pc subwoofer of 60watts sounds louder . So I started raising question marks and found this forum , read some old threads , and found out I'm doing everything wrong.. Can someone please shed some light.. I appreciate it

okay so i have a 1999 chevy blazer and i am buying a dc xl 18 and ill be running 2.2k RMS to it walled in the back, so im just woundering a estamate of db yall think ill hit or be around..

Im sure many of you have read it already, but for those of you who havent here is an article sonic posted on their blog about SPL numbers and what devices are used to measure. common knowledge to most people on here but interesting nonetheless http://blog.sonicelectronix.com/news-on-the-car-audio-industry/ways-to-measure-spl/

Looking for accurate db meter to buy but dont wanna spend the almost 700 for the termlab meter

i have been looking for a car audio competition for 2 years now. :WTFBubble:There hasn't been any,not even a hour way from me. Any one know of any upcoming competition in nyc or long island area.