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Modern FLH, HessBH vs... |
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Bremen_99 
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Joined: 10 December 2025 Status: Offline Points: 68 |
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 Topic: Modern FLH, HessBH vs...Posted: 10 December 2025 at 1:14pm |
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I've got two old FLH that are 22x22x45 each, I came across two 18tbw100-4's, and access to a shop with a CNC in the future. What are the best modern designs for FLH?
I have looked at all speaker design repositories that I could find. The two older existing FLH I have are not that powerful by todays standards, about 137db for the pair, but it would be nice to couple them with two more FLH ontop and the HessBH is same face geometry. The kick will be a c-2d 18", right now like HessBh is the most modern design no compromise solution. Punishers have aged out, except maybe with the horn expansion flares? Still don't like the response, I am doing c-2d kick, maybe better off going with paraflex, bandpass, or even reflex and ditching the FLH coupling idea? The efficiency of paraflex would definitely be nice on limited voltage. I guess reflex would still be in phase if I corrected them. TH wouldn't work and I'm not a fan currently. Paraflex I would have to ditch the FLH entirely likely. And that might be the best approach on limited electrical. Other plans 18sound, lavoce, etc FLH don't dip low enough. More like 50hz horns and definitely not 30. I could have a try at oversizing one of these but for my first CNC i'd like pre-existing plans or editing existing plans like with https://freeloudspeakerplan.rf.gd/ shout out Anyway, is there anything "better" than the HessBH?  Edited by Bremen_99 - 10 December 2025 at 1:17pm |
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Bremen_99
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Posted: 18 December 2025 at 6:53am |
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I picked up a tbx100 on sale for 220, also have a tbx/tbw clone (prv sw2400), SO right now plan is to make a stack of 4x hessbh, or maybe paraflex type O, and just 1x 18" c-2d. I'm not even sure what the impedance is on the tbx yet. I have a longer term plan either way, do not have power for everything and just figuring out piecemeal which direction (FLH vs para) I'm headed. Also power ceiling is imminent. With 4 bridged amps, (2x class d, 1x class H, 1x a/b) the efficiency of 4 paraflex loaded cabs (5 if you count the kick) is looking more and more attractive.. SAPFX118's come to mind, they are so hot... what should I build now I have 4 drivers? Type R? Type c v2's? Hessbh better than invader/punisher/invader/WSX/reflex/TH/Bandpass/hybrid/scoops? Maybe I don't need kicks with the SAPFX118 . please help im in debt
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BrainlessTekno
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Joined: 20 February 2023 Location: Slovakia Status: Offline Points: 381 |
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Posted: 18 December 2025 at 9:02am |
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punishers may be a bit old but still better sounding bins than HessBH in my humble opinion, also i would go for classic SBH instead os HessBH (HessBH is just simplified version of SBH, it may have some upsides tho)
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BarSick / barsik soundsystem
Dont want to toot my own horn but toot toot |
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Bremen_99
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Posted: 19 December 2025 at 1:19am |
OK I've heard from different people who stood in front of side by stacks of hessbh and the og SBH that hessbh WAY better and there's no reason to be doing SBH's anymore, and its not just a simplification. I'm honestly not even sure what you are basing that on, have you heard them in person? Sounds like operator error. I listen to a lot of dub, dubstep, trap, wave, 30hz experimental bass, So 45 hz low corner even with the extension flares with the Punishers just isn't going to do it for me. In any case, the more I hear about paraflex the more I think it's just hype, sorry para lads out there. So the SAPfx118 I wouldn't need kicks.. but am I going to have enough sub 40 info. I am back to thinking about scoops, since I'm building 4, like oversized fanes or polars, but then I'd have to do kicks. Then again I would need kicks with the hessbh too. Anyway sorry if you heard 'em and didn't like. I'm pretty much fully back to the drawing board, the one tbw100 in a reflex in my room is already super duper, I'm content to just running senarios/sims for now. Every other report on the hessbh has been "its the new best FLH"
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Bremen_99
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Posted: 19 December 2025 at 1:32am |
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I went back to read the SBH thread, because someone added measurements, that show its (SBH) terrible sub 50hz response, whereas one hessBH reaches useable 30hz.... So they aren't even in the same territory, would definitely explain the side by side comparisons... Same with the Punisher response. Might be alright if all you listen to is tekno
Edited by Bremen_99 - 19 December 2025 at 1:33am |
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Esplexx
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Posted: 18 January 2026 at 11:46am |
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Hessbh are superior to sbh in every way imaginable, wild statement imo
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BrainlessTekno
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Posted: 20 January 2026 at 12:38pm |
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friend of mine have 6x heesbh tbx loaded so i did hear it many times and im comparing it to bigger stacks of SBH on festivals i heard (not sure about the drivers), for me the SBH felt better, also when i look at the plans SBH sure have more horn lenght, one more fold etc. However all of this is my speculation, also im not sure about all the setting used on HeesBHs on the party, could be some config issue
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BarSick / barsik soundsystem
Dont want to toot my own horn but toot toot |
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Bremen_99
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Posted: 20 January 2026 at 3:53pm |
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That's so cool you've experienced both kind of rigs. I live in a small rural area and the only rigs here I think are poorly executed and for me annoying to listen to
I am considering if my dream of FLH is worth the extra wood and inability to transport without a trailer. Will be a while until I can afford the ply, have a lot to consider before then, like why am I doing this if one 18" reflex is already more than enough for my room  The tbx is definitely xmax limited in the hessbh. That could be your friends issue, since the moment they are pushed barely over xmax it will just say "no thank you". I have mixed 18" subs rn, 2tbw 1tbx, 1 prv (b&c clone) but in the future hopefully all tbw and move the tbx to 18" kicks. Got all open box building it totally myself without a crew so financially its taken a while and not close to being finished. I may build some reflex that can be used with all driver types, no need for kicks, or just one kick, and a lot less plywood. If they aren't being played outside that much this might be better fidelity approach. Thanks for sharing your experience.
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snowflake
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Posted: 20 January 2026 at 4:56pm |
the HessBH may be a marginal improvement over the SBH but neither design is great and don't work well unless in stacks of 4+ (HessBH) or 6+ (SBH). Just build some double 18" reflex. |
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Bremen_99
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Posted: 20 January 2026 at 8:54pm |
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Yea it would be a stack of 4. of the hessbh. But im leaning towards an oversized eighteensound 18sub (18" project sub updated design) reflex for all four, as they also can play high enough to require 1/4 as many kicks. Not as efficient but I think its the best SQ option for indoors (not to mention, can actually transport)
Edited by Bremen_99 - 21 January 2026 at 8:38pm |
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paulus
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Posted: 21 January 2026 at 12:00pm |
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+ snowflake the sbh is shite ,build some em quakes if you want a flh the plan is about :) and just put 1850s in them
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TRENDSETTER SOUND SYSTEM
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Bremen_99
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Posted: 21 January 2026 at 9:01pm |
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you have uhhh a tip where that could be? cause its not on hornplans, or planssystemes, or the thread about the quakes on ere. They sorta look like the JBL ASH6118
ah yea I found these just of the simple folds if that's what you mean, would take a bit of work. I really like the design though   Edited by Bremen_99 - 25 January 2026 at 11:17pm |
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BrainlessTekno wrote: