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Car Audio Build Logs
My first "Active" "SQ'ish" build attempt.
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<blockquote data-quote="ThxOne" data-source="post: 8723199" data-attributes="member: 675210"><p>So I ask and I ask and I ask the best way to set the amp gains with a DSP, what is the reference volume for setting the EQ's and what not... yada yada yada. I also ask if REW already compensates for the natural roll off of pink noise on its graph... apparently it does. So in REW you ARE looking for a pretty flat response across the board from bass to midbass to mids to highs on it's graph when using a calibrated mic and setting the EQ's and crossovers and so on. So basically I just opened up a false floor in the rabbit hole and I am about to jump in deeper.</p><p></p><p>One of the things I did not have was the answer to what volume should I reference all of my settings. Now I have it. 85db - 90db. </p><p></p><p>I have the max, undistorted volume from my head unit into my DSP. 36 of 40 on the eXcelon for the 3Sixty.3 as the 3Sixty.3 wants a clean 2v input.</p><p></p><p>Now I use my test tones at whatever "-5 or -10db" to set the gains on my mids and highs amp and I will use my O-scope to set with no clipping.</p><p>Ditto for my Midbass amp</p><p>Ditto for my sub amp</p><p></p><p>Now, I will turn down the volume on my 3Sixty.3 and turn the levels down on the tweets, midbass and subs and only have my mids playing pink noise. I will turn the volume up until I have my mids at or very near 90db. I will bring the other db levels up to the level of the mids. </p><p></p><p>Now the fun can begin... Equalizing. Phasing. Time correction. After watching a video, the need to eq each individual speaker makes sense.</p><p></p><p>I know this all looks like a bunch a chatter but it makes sense in my brain with what I have seen and heard now.</p></blockquote><p></p>
[QUOTE="ThxOne, post: 8723199, member: 675210"] So I ask and I ask and I ask the best way to set the amp gains with a DSP, what is the reference volume for setting the EQ's and what not... yada yada yada. I also ask if REW already compensates for the natural roll off of pink noise on its graph... apparently it does. So in REW you ARE looking for a pretty flat response across the board from bass to midbass to mids to highs on it's graph when using a calibrated mic and setting the EQ's and crossovers and so on. So basically I just opened up a false floor in the rabbit hole and I am about to jump in deeper. One of the things I did not have was the answer to what volume should I reference all of my settings. Now I have it. 85db - 90db. I have the max, undistorted volume from my head unit into my DSP. 36 of 40 on the eXcelon for the 3Sixty.3 as the 3Sixty.3 wants a clean 2v input. Now I use my test tones at whatever "-5 or -10db" to set the gains on my mids and highs amp and I will use my O-scope to set with no clipping. Ditto for my Midbass amp Ditto for my sub amp Now, I will turn down the volume on my 3Sixty.3 and turn the levels down on the tweets, midbass and subs and only have my mids playing pink noise. I will turn the volume up until I have my mids at or very near 90db. I will bring the other db levels up to the level of the mids. Now the fun can begin... Equalizing. Phasing. Time correction. After watching a video, the need to eq each individual speaker makes sense. I know this all looks like a bunch a chatter but it makes sense in my brain with what I have seen and heard now. [/QUOTE]
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My first "Active" "SQ'ish" build attempt.
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