Time alinment confusion (hd 15)
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Category: Plans
Forum Name: HD 15 horn
Forum Description: Discussion / Questions about the HD 15 horn
URL: https://forum.speakerplans.com/forum_posts.asp?TID=1169
Printed Date: 27 March 2026 at 4:54am
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Topic: Time alinment confusion (hd 15)
Posted By: PBanyer
Subject: Time alinment confusion (hd 15)
Date Posted: 01 January 2005 at 8:31pm
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Time alinment confusion 1 Hd 15 on the floor. The midrange is about 1.8 meters off of the floor which is twin 12s in a box (not a horn) then I use a horn for the highs that sits back 20cm in relation to the mid range. Could some one please tell in cm how much I need to delay the mid and highs to be able to time a line them all. I have a dig x over and can just put the figures in. I wish you all happy New Year. Thanks for any help Phil |
Replies:
Posted By: tb_mike
Date Posted: 02 January 2005 at 9:40am
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Its all about simply converting Distance into time. http://www.speakerplans.com/page88.html - http://www.speakerplans.com/page88.html |
Posted By: miniphil
Date Posted: 05 January 2005 at 11:13am
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If you can get a tone generator, then put a tone through the system at each croossover frequency. Adjust the the dealys until you get the loudest sound. Poor man's way of doing it. ideally, borrow a friend with Smaart. I think I use about 5ms with my HD15s, but it is stored in the Driverack, so I have forgotten now. ------------- GO YOU BIG RED FIRE ENGINE!!! |
Posted By: norty303
Date Posted: 05 January 2005 at 1:43pm
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Or reverse the phase on the HD15 then adjust the delay until you get the least sound (cancellation) then flip the phase back. I'd say this is easier to detect with the ear. ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Adjust the the dealys until you get the loudest sound.Posted By: Dom
Date Posted: 05 January 2005 at 7:30pm
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WinISD works fine as a tone generator, and inverting the phase on one of the cabs is the easiest way to do it... If you haven't got a laptop you can always just burn a CD with test tones recorded at your crossover points... Personally I think it's the quickest and easiest way to do it.. Just have a rough guess at the distances and adjust the delays by ear. Much quicker than setting up a SMAART rig everytime... ------------- "It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed." |
Posted By: kramG
Date Posted: 08 January 2005 at 4:04pm
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I think you can download a trial version of smarrt which will run on any basic PC with a stereo input soundcard using the impluse measurement tool you will be able to see the arival times of the different componants and calulate the diference but you knew that anyway Kram G |
Posted By: hiphei
Date Posted: 08 January 2005 at 11:11pm
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PBanyer, sorry for using your thread, but i didn't want to make new one for very similar questions.. What would be the correct height to measure delays..? My speaker stacks are at least 1.8m tall (Bass horns, mid horns and top horns. I haven't really measured the height). I have thought it a lot, and i just can't figure out the correct way to measure it properly. (Wouldn't it make odd response at crossover point, if spreakers aren't precisely time aligned?) I already downloaded trial version of SMAART, and it looks very good software! But, no matter how hard i think, there always seems to be different delay between cabinets depending on position of measurement microphone. How on earth do you guys measure it..?  |
Posted By: tb_mike
Date Posted: 09 January 2005 at 7:50am
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head height perhaps? its all about the distance,your trying to cause all loudspeaker cones to be aligned vertically in time.
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