Outline Minibass, similar to HD15, questions
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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=89309
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Topic: Outline Minibass, similar to HD15, questions
Posted By: DjLeco
Subject: Outline Minibass, similar to HD15, questions
Date Posted: 01 November 2014 at 10:27pm
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Hi, I own 4 pieces of Outline Minibass speakers, wich is very similar with HD15, and I never found anywhere how to crossover them for maximum efficiency.
http://nordiskmusik.se/Global/Pdf/Outline_Minibass_Stackbass.pdf" rel="nofollow -
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Replies:
Posted By: DjLeco
Date Posted: 02 November 2014 at 5:50pm
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I thought some answers fot those speakers will be difficult to obtain...
So, how do you process yours HD 15 bins, crossover points, filter used, depth, some bass shelving at ?? hertz? ------------- I'm A Stupid SMART Romanian... |
Posted By: ceharden
Date Posted: 02 November 2014 at 6:31pm
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One of my mates runs a system with I think 12 of the Stackbass (twin version). I think in the end we settled for running them from about 75Hz up to 140Hz. They have some quite large lumps above 100Hz, especially in large stacks so need plenty of EQ. They can be used lower, down to probably 50-55Hz but that wouldn't make much use of the subs below (4/side Opus HB121 Mk2 loaded with P-Audio SD21-1800EL). |
Posted By: DjLeco
Date Posted: 02 November 2014 at 7:02pm
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First, thank you for reply!
I'm afraid to cut lower than 55Hz, afraid of overexcursion of speaker, high no more than 100-110Hz.
Is for mobile use, and without subwoofer, so that's why I'm curious especially about minimum SAFE freq for low cut, filter used and depth (Linkwitz, Butterwoth and slope), and some bass shelving... ------------- I'm A Stupid SMART Romanian... |
Posted By: ceharden
Date Posted: 02 November 2014 at 8:39pm
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You can run them as high as you want, the limit is just how much 'honk' you can live with! I would say 55Hz is a sensible low cut. I normally use a Butterworth 24dB for my low cut filters.
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Posted By: mini-mad
Date Posted: 02 November 2014 at 9:00pm
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And cut them as high as 145... doing it below 100 makes them pointless as they are designed to go at least 50hz higher then your playing them. Once you do this you will feel a nice THUMP in your chest wen you turn them up. ------------- If it sounds like a gorilla is trying to escape, turn it down. |
Posted By: DjLeco
Date Posted: 03 November 2014 at 10:27am
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Thank you.
I will try to use low cut at 52Hz/24db/butterworth, and high cut at 120Hz/18 db butteworth.
Any other opinions are welcomed!
Especially for bass shelving. ------------- I'm A Stupid SMART Romanian... |
Posted By: mini-mad
Date Posted: 03 November 2014 at 1:30pm
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50-55 is fine.... but cut them higher! Go up to 140-150!! It should pound your chest better. Its design looks to be more like a kick cab. So it should play higher then 120hz ------------- If it sounds like a gorilla is trying to escape, turn it down. |
Posted By: DjLeco
Date Posted: 09 November 2014 at 11:04am
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I have made some modifications:
Low cut 53Hz, butterworth/36db/oct.
High cut 115Hz, butterworth/24db/oct.
Sounds very OK.
Now if anyone knows some points and slopes for bass shelving... ------------- I'm A Stupid SMART Romanian... |
Posted By: mini-mad
Date Posted: 09 November 2014 at 3:08pm
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Try moving the upper cut off to 140 not 115... it will hit harder as kick bass. ------------- If it sounds like a gorilla is trying to escape, turn it down. |
Posted By: DjLeco
Date Posted: 09 November 2014 at 4:55pm
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Is more than enough sound pressure above 110Hz.
Those kick speakers are "followed" by these fullrange speakers:
http://www.youtube.com/watch?v=7ESBLRT1Lus" rel="nofollow - http://www.youtube.com/watch?v=7ESBLRT1Lus
http://www.youtube.com/watch?v=DACgkxgOeqU" rel="nofollow - http://www.youtube.com/watch?v=DACgkxgOeqU
------------- I'm A Stupid SMART Romanian... |
Posted By: cookie-dj
Date Posted: 09 November 2014 at 9:21pm
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if your asking for peoples knowledgable opinions, have the decency to try out their suggestions seeing as they took the time to reply. Just cut higher as they might play that frequency better than your 'full range' speaker ------------- You can't polish a turd! |
Posted By: toastyghost
Date Posted: 09 November 2014 at 9:26pm
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http://nordiskmusik.se/Global/Pdf/Outline_Minibass_Stackbass.pdf Should contain all you need to know, surely? |
Posted By: DjLeco
Date Posted: 10 November 2014 at 7:36pm
As I said, I don't want to play it above 120 Hz, is MORE THAN ENOUGH spl there.
I was asking about minimimum freq for cut off, type of filter BW or L-R, and slope db/oct.
Also for an known good bass shelving point.
Thank you.
They give there freq response, not optimal crossover points, bass shelving, etc.
Regarding those specs I decided to use BW filter with 30db/oct slope at 53Hz for low cut, and BW filter with 24db/oct at 120Hz fot high cut.
Any other opinions are welcomed, for low cut and bass shelving too. ------------- I'm A Stupid SMART Romanian... |
cookie-dj wrote:Posted By: bass*en*mass
Date Posted: 10 November 2014 at 9:06pm
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depends a lot on your total volume/SPL required imo. driver seems robust enough to take a beating. 500w p driver, hpf 18db bw 40-45hz, some eq to get desired response for the location, style played, upper x over to match your tops and prefered sound.. many people cut their bins way too high to get a smooth rolloff which imo forms the characteristics of bass sounds. (for example 40hz dont need to be loud sometimes, hearing a 50hz bass rolloff naturaly down to 40hz sounds better than the same impulse beeing cut sharply above..) |
Posted By: DjLeco
Date Posted: 10 November 2014 at 10:20pm
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I'm afraid to cut lower than 53Hz, afraid of overexcursion of the driver... ------------- I'm A Stupid SMART Romanian... |
Posted By: toastyghost
Date Posted: 11 November 2014 at 3:49pm
| I would argue that the frequency response graph indicates pretty well where to put the crossover points. |