HD 15 plots
Printed From: Speakerplans.com
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=2151
Printed Date: 26 March 2026 at 10:55pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: HD 15 plots
Posted By: Dom
Subject: HD 15 plots
Date Posted: 01 July 2005 at 6:23am
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Further to our recent sheep terrorism Ground plane plot of a HD215 (a double), 24db butterworth highpass at 40hz.
A pair of HD215's...
Three HD215s
And a plot with all three traces on...
------------- "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." |
Replies:
Posted By: Timber_MG
Date Posted: 01 July 2005 at 7:50am
| Have a look at ETF. It has a LF mode that delivers very nice results for measuring subs up to 150Hzish and it also shows you any potential resonances (generally accompanied by dips in FR) |
Posted By: Dom
Date Posted: 01 July 2005 at 8:14am
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As yet I've not got my head round ETF... ------------- "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: norty303
Date Posted: 01 July 2005 at 8:40am
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And i'm assuming thats with PD154's loaded. Interesting to see that dip at 125hz. I found thru experimenting that a reasonably wide Q BP EQ cut of 2 or 3db at around 120hz gave a large increase in perceived bottom end whilst buying another led's worth of headroom at the amp. Seems thats what's needed to flatten the response so i'm glad my ears are working right! Seems 63hz is the ideal cutoff to an X1! Nice one Dom ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: Contour
Date Posted: 01 July 2005 at 11:05am
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Hello, Dom was it you talking about 40-45hz extension with multiple HD15 cabinets? Do you use EQ to reach that? Best regards, Walt |