My HU is an Alpine CDA-7892, and it has a time correction feature.brbrThe manual says to measure the distance from my ear to the speakers and adjust accordingly (along with a small mathimatical formula).brbrI was wondering, since I'm getting component speakers, should I measure the distance from my ear to the tweeters? brbrIf so, then when I do that, I take a string and put it from the tweeter to my ear and measure the straight line distance for each tweeter? brbrThis gets kind of difficult, so I was wondering if anyone knows of a better way of doing this.brbrAny suggestions will be greatly appreciated.
Replies (2)
zInal3 on 02/8/2004 02:57:03
me too , after few months using my alpine, i cant figure out how to calculate the time correction.
alanjlamore on 02/8/2004 10:27:51
I have the owner's manual in .pdf format on my computer.brHere's a link of where I got it on-line:brbrhttp://ecominet2.alpine-usa.com/html/asb/owner/cda-7894_om.pdfbrThe part about time correction is on page 8.brbrWhen you select your time correction on your HU, you're telling it to delay the sound from that particular speaker in milliseconds.brbrI had my left speaker delayed by 1.3ms, but I figgured the distances with a tape measure, and had to convert inches to meters to plug it into the formula. I'm not very confident that this way is going to be very accurate. That's why I was asking if there's a better way of doing it.brbrTo figgure it out you take the difference between the distances from your ears to the speakers and divide by 343 and multiply by 1000 (speed of sound is 343ms).brbrFor example, if the dist to your left speaker is .5M and the dist to your right speaker is 2.25M, you subtract the two (1.75M) and divide by 343 and mult by 1000. This would give you 5.1ms.brThat's where you'd set the T.corr on the left speaker so they both sound like they're the same distance away.br
Replies (2)
zInal3 on 02/8/2004 02:57:03
me too , after few months using my alpine, i cant figure out how to calculate the time correction.
alanjlamore on 02/8/2004 10:27:51
I have the owner's manual in .pdf format on my computer.brHere's a link of where I got it on-line:brbrhttp://ecominet2.alpine-usa.com/html/asb/owner/cda-7894_om.pdfbrThe part about time correction is on page 8.brbrWhen you select your time correction on your HU, you're telling it to delay the sound from that particular speaker in milliseconds.brbrI had my left speaker delayed by 1.3ms, but I figgured the distances with a tape measure, and had to convert inches to meters to plug it into the formula. I'm not very confident that this way is going to be very accurate. That's why I was asking if there's a better way of doing it.brbrTo figgure it out you take the difference between the distances from your ears to the speakers and divide by 343 and multiply by 1000 (speed of sound is 343ms).brbrFor example, if the dist to your left speaker is .5M and the dist to your right speaker is 2.25M, you subtract the two (1.75M) and divide by 343 and mult by 1000. This would give you 5.1ms.brThat's where you'd set the T.corr on the left speaker so they both sound like they're the same distance away.br
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