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Super Bass Horn V.02 by Startec (Quad Acoustics-F)

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smitske96 View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2021 at 9:35am
I would say the response posted by citizensc would be enough info to change your mind Wink
Almost 10dB down @50Hz in a block of 4.. You can definately do better with the same amount of external volume.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Toss Out Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2021 at 9:26am
guys are you kidding mee?? anyway i saw some measures of sbh on the web...it seems good about frequencies..i dont know why @citizensc has this cutoff of sbh...ideas are accepted for the best sub frequencies horn...

sbh and cw l36 rulezz
..change my mind!!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote citizensc Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2021 at 9:24am
It doesn't really matter what you load it with, its a flawed design. 

I think 'nothing' below 50hz is an exaggeration but there is a long list of designs that will perform better below 50hz that are smaller, lighter, easier to build, easier to setup and cheaper. 
https://www.facebook.com/voyager.system

@voyager_soundsystem
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2021 at 9:13am
@Toss Out

Maybe the 'Sub of Doom' from Scott Hinson is something interesting.
If you have FB, you can get the plans from his facebook page DIYRM if I am correct.
Really big though LOL


Edited by smitske96 - 29 November 2021 at 9:14am
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Toss Out Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2021 at 8:43am
@citizensc
so although if i choose this woofer (18LW2600 Eighteen Sound) u are telling me that i will not hear nothing under 50hz? second question..im a bit noob but this woofer written above is about 1500w or 3000w? i dont know if i choose an amplifier i should choose it reading "nominal" or "continuous" power handling...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote citizensc Quote  Post ReplyReply Direct Link To This Post Posted: 29 November 2021 at 1:56am
For anyone that owns or loves the SBH, maybe stop reading here... your feelings may be hurt

The more I have learned about FLH design, the more I have come to hate this design. Its just sub optimal, it isn't that suppressing, after all it it is a design from the 90s, adapted to what what was considered a modern driver in 2008, in 2021 we have so many great drivers and design tools that designing something better than this isn't very hard. 

Here are a couple of real life measurements of the SBH in groups of 4, as you can see, it is trash below 50hz. I ran an akabak 3 sim of the SBH in groups of 4 and compared it to 4 x 18 inch reflex and 4 x 15 inch BG horn, both killed it below 50 hz. 




From a real life subjective (ears), objective (measurement) and theoretical (BEM sim) point of view this design does not score well IMO.

I have been planning on designing a 18 inch and 21 inch FLH and posting it here but I have been very busy as of late. I am finishing my masters and moving 3500km to take a new job before the end of the year but I may find time when I settle down in the new year. 
https://www.facebook.com/voyager.system

@voyager_soundsystem
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Toss Out Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 2:29pm
Someone has original Startec SBH plan 18" to link me? full plan view..thanks
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Post Options Post Options   Thanks (0) Thanks(0)   Quote concept-10 Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 12:57pm
Originally posted by toastyghost toastyghost wrote:

I’m not a fan of the SBH I’ve heard, and as yet, none of the Paraflex either.

Personally, I’d be going for a SKRAM if I had a hankerin’ for a 21” box that played loud, low, and was well designed.

Agreed, built SBH cabs for customers, never been impressed, built Quite a few Paraflex cabs as well  including 6 of the new 21 golden  not impressed on any level.
CNC Cabinets
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Toss Out Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 12:54pm
I think i will switch with 18"...sbh looks awesome to my eyes haha anyway thank you all guys!!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 12:40pm
I’m not a fan of the SBH I’ve heard, and as yet, none of the Paraflex either.

Personally, I’d be going for a SKRAM if I had a hankerin’ for a 21” box that played loud, low, and was well designed.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sushi Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 12:34pm
Sorry, Toss Out.. there's no 21" sbh plan around.
To be honest, if you plan to use 21 inches woofers, you can choose some better cab for them: sbh it's a long horn designed to reach low sub frequencies with a 18" driver, and still with
some compromises (uneven response, for ex.) Those frequencies are more easily reachable with bigger drivers without the need to load them in such long horns. There are some smarter plans made for 21'drivers, no difficult to find as well. Start looking for the 21' paraflex sub,to begin..
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Toss Out Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2021 at 12:23pm
Thank you..I think the same..hoping this until i will found it hahaha at least i change with 18"..sbh cabinet is my favourite with cerwin vega l36..thank you again!
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