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Super Bass Horn V.02 by Startec (Quad Acoustics-F)
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AcidDropper303 View Drop Down
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    Posted: 26 April 2022 at 2:27pm
Thank you for the fast response, I will look into everything available again when it's time
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No comment on the quality of the design or any alternatives, but the Wayback Machine still has it: https://web.archive.org/web/20121119193411/http://www.pcorporation.net/SuperBassHornv2.pdf

HTH,
David.
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Points: 10675 		Post Options Post Options   Thanks (1) Thanks(1)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 26 April 2022 at 9:28am
The F124 is in a different league to the SBH. I’d save your money.
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Points: 7452 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 26 April 2022 at 8:58am
Originally posted by citizensc citizensc wrote:

For anyone that owns or loves the SBH, maybe stop reading here... your feelings may be hurt

<SNIP>

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. 


Have you ever seen the Modified Lab sub plans, for a 2x15" version?
Global Depopulation - Alive and Killing.
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levyte357- View Drop Down
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Points: 7452 		Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 26 April 2022 at 8:55am
Originally posted by Toss Out Toss Out wrote:

i think i ll go with l18p300 and wsx...i saw specs comparing 18lw2600 and rcf and this is better..i was wrong with all


There are quite a few modern drivers, that would be better in WSX, than original RCFL18P300.

Would also suggest you go hear WSXs playing, in venues, of similar size, to those, you intend to play them in.

WSX are "NOT" best suited, to smaller venues.
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AcidDropper303 View Drop Down
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Points: 2 		Post Options Post Options   Thanks (0) Thanks(0)   Quote AcidDropper303 Quote  Post ReplyReply Direct Link To This Post Posted: 26 April 2022 at 8:13am
Hey people!Cry I tried to find the Plan PDF from  http://www.pcorporation.net/SuperBassHornv2.pdf - SuperBassHornv2.pdf by Startec since the website is gone down. Please can any of you help out here? For the future I wanna build 4 of these as center and amp them with Powersoft K20+Limiter =) Feel free to Post it here to make it available to the Internet community again or mail me aciddropper303@gmail.com, thank you in advance - hope to get the Plan or meet someone who has got it for the future build <3 Otherwise I have to buy expansive F1 F124 much later instead, money money money - Maybe it will be just 4 WSX instead, tho I want the below 30hz Infra in a Horn up to 125hz :( F1 218 Infrahorn is most likely phasing a bit and also expansive as hell :D Much love from a learning professional, now starting with 6 Void V18-1000 in 2speakerplans X1, 2JBL4818 & 2 EV T18 parralel @MC²AudioE45 2ohm each channel =)LOL
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Points: 1352 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB67 Quote  Post ReplyReply Direct Link To This Post Posted: 25 December 2021 at 10:42am
Good job citizensc. Nice to see actual measurements, and those seem pretty stark. That's not a good response at all.  
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[/QUOTE]

Funnily enough, there still seem to be heaps of free party types building enthusiastically anything from 4-16 cabinet sized stacks of sbh's, and circle-jerking about this "amazing bass horn" on fb LOLConfusedOuchDead
[/QUOTE]

Tbh was on my first teknival this yearBig smile and the 12 sbh stack sounded the best overrall in my opinion,but competition was mostly huge walls of bph maybe some punishers here and there!?
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Originally posted by citizensc citizensc wrote:

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. 

Funnily enough, there still seem to be heaps of free party types building enthusiastically anything from 4-16 cabinet sized stacks of sbh's, and circle-jerking about this "amazing bass horn" on fb LOLConfusedOuchDead


Edited by bob4 - 25 December 2021 at 7:41am
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Points: 80 		Post Options Post Options   Thanks (0) Thanks(0)   Quote sushi Quote  Post ReplyReply Direct Link To This Post Posted: 23 December 2021 at 2:28pm
Originally posted by cravings cravings wrote:

Trying to link to James hippersons aes paper from this year but phone browser not playing ball

Thanks for the input, I'm looking for it and reading it asap. Honestly i've been trying to have some good reading on acoustics/speakerdesign/audio in general, so any input is welcome!
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Originally posted by cravings cravings wrote:

Trying to link to James hippersons aes paper from this year but phone browser not playing ball


I also literally submitted 40,000 words, tons of real measurements on scale models and sixty BEM studies on this last week for a master’s degree. It isn’t exactly the same, but until the product of complex wavenumber and equivalent surface radiation impedance are approaching 10, the coverage angles are more or less the same in the pass band of interest.

An asymmetrical horn profile does create some aberrations - again, outside of the region you’d use the sub in - but these are caused by diffraction and also apply to a largely asymmetrical ported box too.
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cravings View Drop Down
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Points: 7302 		Post Options Post Options   Thanks (0) Thanks(0)   Quote cravings Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2021 at 3:05pm
Trying to link to James hippersons aes paper from this year but phone browser not playing ball


Edited by cravings - 07 December 2021 at 3:06pm
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