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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: 8703398" data-attributes="member: 675210"><p>You know when you do stuff with your stereo and you think "wow, I am getting good at this tuning thing." Then one day (today) you drop your brother off at his job then head off to your own job an hour and a half early. I decided to take the laptop with me and mess with the crossovers for the sub, the midbass and the mids and highs. I had the sub crossed at 110hz and the midbass at 110 - 1Khz both at 24db per octave. I was looking in the 3Sixty GUI at both crossover areas and decided to split them up. Sub down to 100hz and Midbass to 150hz and changed to 12db slopes. Then I changed the upper bandpass of the midbass and the midrange crossovers to spread them out as well and switched them to 12db slopes.</p><p></p><p>I moved on to the EQ. This is where everything got weird and good at the same time. I set the amplifiers with the O-scope using -5db tones so I decided to start adjusting the eq's for the midbass and mids/tweets. Instead of lowering each band I adjusted, I boosted them... up to +5db but not lower than 0db. Remember how I said it sounded good but just needed some more output... Well, it is there now!! But while that is good news I noticed the sound shifted left. Confused by this I decided to pull out my tape measurereerererr thing after listening to track 17 on my IASCA disc to confirm my brain wasn't going nucking futs. Imaging was way off.</p><p></p><p>Leaving the sub at a distance of zero (70" actual) I began measuring each speaker....................... this is how stupid I am. I discovered that every time I measured the right speakers I would be looking at the tape measure upside down. So dyslexically I subtracted that number from the 70 inches for the sub then input it into the DSP (like instead of 52" [70-52=18"] I subtracted 25" [70-25=45"). See how far out it was pushing my right channel speakers? While technically still left and right, the distances for the delay was way off. Once I caught my mental phuck up, I input the correct numbers... yes, I triple checked them this time and then I played track 17 again. These are 7 snare drums panned from far left and transitioning evenly spaced to far right. For the first actual time... they were spaced so perfectly even from left to right. My eyes got friggin HUGE.</p><p></p><p>While driving on the interstate at 74mph with the windows down, I heard my music. All of the music. I smiled all the way home.</p></blockquote><p></p>
[QUOTE="ThxOne, post: 8703398, member: 675210"] You know when you do stuff with your stereo and you think "wow, I am getting good at this tuning thing." Then one day (today) you drop your brother off at his job then head off to your own job an hour and a half early. I decided to take the laptop with me and mess with the crossovers for the sub, the midbass and the mids and highs. I had the sub crossed at 110hz and the midbass at 110 - 1Khz both at 24db per octave. I was looking in the 3Sixty GUI at both crossover areas and decided to split them up. Sub down to 100hz and Midbass to 150hz and changed to 12db slopes. Then I changed the upper bandpass of the midbass and the midrange crossovers to spread them out as well and switched them to 12db slopes. I moved on to the EQ. This is where everything got weird and good at the same time. I set the amplifiers with the O-scope using -5db tones so I decided to start adjusting the eq's for the midbass and mids/tweets. Instead of lowering each band I adjusted, I boosted them... up to +5db but not lower than 0db. Remember how I said it sounded good but just needed some more output... Well, it is there now!! But while that is good news I noticed the sound shifted left. Confused by this I decided to pull out my tape measurereerererr thing after listening to track 17 on my IASCA disc to confirm my brain wasn't going nucking futs. Imaging was way off. Leaving the sub at a distance of zero (70" actual) I began measuring each speaker....................... this is how stupid I am. I discovered that every time I measured the right speakers I would be looking at the tape measure upside down. So dyslexically I subtracted that number from the 70 inches for the sub then input it into the DSP (like instead of 52" [70-52=18"] I subtracted 25" [70-25=45"). See how far out it was pushing my right channel speakers? While technically still left and right, the distances for the delay was way off. Once I caught my mental phuck up, I input the correct numbers... yes, I triple checked them this time and then I played track 17 again. These are 7 snare drums panned from far left and transitioning evenly spaced to far right. For the first actual time... they were spaced so perfectly even from left to right. My eyes got friggin HUGE. While driving on the interstate at 74mph with the windows down, I heard my music. All of the music. I smiled all the way home. [/QUOTE]
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My first "Active" "SQ'ish" build attempt.
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