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<blockquote data-quote="SLAB153" data-source="post: 8541687" data-attributes="member: 671631"><p>My bad I used -10db not -15db I followed this Preliminary information:</p><p></p><p>People will tell you different things when it comes to what tone to use to set your gains. Some will say to use a 0dB tone, some will say to use a -3dB tone, and some say a -5db tone, some may even say a -10dB tone.</p><p></p><p>Now you may wonder, why would I want to tune my amp with a wave that is smaller? The answer is simple: Music is dynamic. It is not made up of 0dB tones, but by many rather smaller frequencies and notes layered together, waves on top of waves.</p><p></p><p>In an audio file the highest point that a wave can be without clipping off (it's maximum clean size) is referred to as 0dB, and anything less than that is referred to as -x.xdB (however many dB under a full wave.)</p><p></p><p>Now in music you have frequencies your tweeters pick up on top of frequencies your midrages/midbasses pick up on top of frequencies your subwoofers pick up. When you start using your amps filter (in this case your bass amp's low pass filter) you are removing the frequencies you don't want that driver to reproduce, and are left with the frequencies you do want. When you start removing the notes that are layered on top of the bass notes, the notes shrink back down to their natural sizes.</p><p></p><p>Let's use the song 'Man I' by Gorilla Zoe for reference. Even though the song fills up the audacity display window from peak to peak at points, when you use the low pass filter on it set to 80Hz@12dB/octave you are actually receiving about -13dB of music (bass) instead of 0dB. This means that there is room to increase the output of the bass safely. Almost every song is like this, and that is why it is safe to use a negative amplitude tone to tune your amp.</p><p></p><p>How do I know what tone I should use though? It's simple, if you like listening to bass boosted music, such as Decaf's music, use no more than a -5dB tone, if you just listen to regular non-boosted music you may be safe up to a -10dB tone. Choose the tones based on the type of music you listen to. For instance; I make my own edited and boosted songs, but I use a limit to my bass. I do not amplify the bass in a song beyond -8dB, and as a result I tune my system with a -7.5dB tone to get the most out of my music.</p><p></p><p>For treble I recommend a tone between 0 and -10dB.</p><p></p><p>For bass I recommend a tone between -5 and -10dB</p><p></p><p>Use whatever tone you feel safe with.</p><p></p><p>Remember though, that after you tune your system with this tone you cannot exceed that amplitude at full tilt without clipping it, so be sure you know how much bass is in a song before you play it. I usually check a song for clipping by playing it in Windows Media Player with the scope visualization on and look for flat spots. If it is clean, I put it in Audacity and check the amplitude of the bass. If it is less than my tuning tone, then I can play it at full tilt, if it is more then I will have to back off a bit on the sub level.</p><p></p><p>Sent from my iPhone using Tapatalk</p></blockquote><p></p>
[QUOTE="SLAB153, post: 8541687, member: 671631"] My bad I used -10db not -15db I followed this Preliminary information: People will tell you different things when it comes to what tone to use to set your gains. Some will say to use a 0dB tone, some will say to use a -3dB tone, and some say a -5db tone, some may even say a -10dB tone. Now you may wonder, why would I want to tune my amp with a wave that is smaller? The answer is simple: Music is dynamic. It is not made up of 0dB tones, but by many rather smaller frequencies and notes layered together, waves on top of waves. In an audio file the highest point that a wave can be without clipping off (it's maximum clean size) is referred to as 0dB, and anything less than that is referred to as -x.xdB (however many dB under a full wave.) Now in music you have frequencies your tweeters pick up on top of frequencies your midrages/midbasses pick up on top of frequencies your subwoofers pick up. When you start using your amps filter (in this case your bass amp's low pass filter) you are removing the frequencies you don't want that driver to reproduce, and are left with the frequencies you do want. When you start removing the notes that are layered on top of the bass notes, the notes shrink back down to their natural sizes. Let's use the song 'Man I' by Gorilla Zoe for reference. Even though the song fills up the audacity display window from peak to peak at points, when you use the low pass filter on it set to 80Hz@12dB/octave you are actually receiving about -13dB of music (bass) instead of 0dB. This means that there is room to increase the output of the bass safely. Almost every song is like this, and that is why it is safe to use a negative amplitude tone to tune your amp. How do I know what tone I should use though? It's simple, if you like listening to bass boosted music, such as Decaf's music, use no more than a -5dB tone, if you just listen to regular non-boosted music you may be safe up to a -10dB tone. Choose the tones based on the type of music you listen to. For instance; I make my own edited and boosted songs, but I use a limit to my bass. I do not amplify the bass in a song beyond -8dB, and as a result I tune my system with a -7.5dB tone to get the most out of my music. For treble I recommend a tone between 0 and -10dB. For bass I recommend a tone between -5 and -10dB Use whatever tone you feel safe with. Remember though, that after you tune your system with this tone you cannot exceed that amplitude at full tilt without clipping it, so be sure you know how much bass is in a song before you play it. I usually check a song for clipping by playing it in Windows Media Player with the scope visualization on and look for flat spots. If it is clean, I put it in Audacity and check the amplitude of the bass. If it is less than my tuning tone, then I can play it at full tilt, if it is more then I will have to back off a bit on the sub level. Sent from my iPhone using Tapatalk [/QUOTE]
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