HD15 honking help
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=108663
Printed Date: 26 March 2026 at 12:35pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: HD15 honking help
Posted By: dgm606
Subject: HD15 honking help
Date Posted: 03 August 2024 at 6:41pm
| 1 |
Replies:
Posted By: Teadub
Date Posted: 03 August 2024 at 8:37pm
| which drivers are in them and what at what frequencies have you tried to xo? |
Posted By: dgm606
Date Posted: 04 August 2024 at 1:51am
| 1 |
Posted By: teeth
Date Posted: 20 August 2024 at 7:05pm
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set your upper xo lower, sub 140 also put some more info in your posts please
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Posted By: 1ManSoundsystem
Date Posted: 16 July 2025 at 1:43am
honk honk !  |
Posted By: BrainlessTekno
Date Posted: 16 July 2025 at 8:16am
im glad this post was brought up, lot of interesting info here  ------------- BarSick / barsik soundsystem Dont want to toot my own horn but toot toot |
Posted By: levyte357-
Date Posted: 02 August 2025 at 7:16pm
 Above graph suggests, flattening eq of approx -3db@150hz, with q of approx 0.5 would be a good start. If none of the above makes any sense, or you are using horn loaded cabs, without LMS, maybe time to reconsider, if Sound/Mobile PA is for you.
 ------------- Global Depopulation - Alive and Killing. |
Posted By: paulus
Date Posted: 04 August 2025 at 11:25am
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i used hd15 for 10 years loaded with pd154( mad bl for a 15 inch ) and time aligned to my scoops , i cut them 75 to 125 and they were bloody good indeed
------------- TRENDSETTER SOUND SYSTEM |
Posted By: levyte357-
Date Posted: 04 August 2025 at 1:08pm
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The HD15 unprocessed response, wil almost always have huge peak in the response, making it difficult to hear anything, each side of the frequency peak. A lot of older brand name PA cabs, had a normally peaky, response, but they shipped with dedicated "controllers", that smoothed the response. Looking at older Turbo, FK1 docs, they published recommend smoothing eq settings, for engineers using their own LMS, with these cabs.
------------- Global Depopulation - Alive and Killing. |
Posted By: KDW32
Date Posted: 04 August 2025 at 10:12pm
 
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Posted By: 4D
Date Posted: 05 August 2025 at 4:21pm
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using the elderly turbo tse218/118 I often have a nibble approx -3db at 80hz & 160hz reduces both whoom and honk.. ------------- DMZ. "The bass was intense. Girls were literally running up to stand next to the subs" |
Posted By: levyte357-
Date Posted: 05 August 2025 at 11:48pm
I have a video somewhere, where I flattened the response of a THL-818, after reading Turbo docs, then using standard Fane 18B, was running the cab, 80-400hz...  ------------- Global Depopulation - Alive and Killing. |
4D wrote:Posted By: fat_brstd
Date Posted: 06 August 2025 at 1:12am
I run the same (PD154 in HD15) and cross from 77hz to 154hz into the 12" section from an mt121 The biggest issue with HD15 is trying to play them too high. I feel if you are getting less than 1 octave from a box then its probably not suited to doing what you are asking of it. ------------- Melbournes Rootical Warrior Roots - Dub - Steppers http://www.facebook.com/adrians.wall" rel="nofollow - facebook page |
Posted By: levyte357-
Date Posted: 06 August 2025 at 2:19pm
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I would say, the plot I quoted, clearly shows the natural response, needs serious smoothing, to get a desirable result. If with purely cutting, not boosting, engineer can obtain average of 105db sensitivity, from single driver 15" cab, 80-200hz, that is a win win. But then, many would argue, 102db average sensitivity, from a 2x15 reflex, 70-280hz, with little or no smoothing, for ruler flat response, might be better.
------------- Global Depopulation - Alive and Killing. |
Posted By: Steve20131
Date Posted: 30 September 2025 at 9:32am
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Like horns in all bandwidths there are standing waves, especially in horns with folds. I'm not sure it's a purely f/response issue. You could try some wall damping especially inside the cab (if it opens...) |