car subs are a good example.
basicly most of them will work properly in the exact same box.
they are designed to do so.
you can find drivers that can be used interchangebly, the price tag and the brand name do not tell anything at all.
sometimes even if you have a datasheet, the spread in production makes it mostly not too usefull if you want to be verry scientific.
basicly most of them will work properly in the exact same box.
they are designed to do so.
you can find drivers that can be used interchangebly, the price tag and the brand name do not tell anything at all.
sometimes even if you have a datasheet, the spread in production makes it mostly not too usefull if you want to be verry scientific.
Troels Classic stand-cabinet with ~1.5cuft has F3~39Hz. For the same floor area, a floor-cabinet with 2.7cuft produces F3~28Hz with the same SB23NRX45 8" woofer. No crossover changes are neessary.
If your furniture style supports a floor standing cabinet, you can get the deep 28Hz bass the 8" SB23NRX45 woofer is famous for in no extra floor area. Low A on a piano is 27.6Hz.
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I think you should always address the obvious weakness of a speaker to seek improvement with more cash or design.
In the case of the SEAS-3-Way-Classic, it is that the goodish underhung H1304-08 MCA12RC midrange is overworked on power handling, as illustrated in Boxsim's estimate below.
One obvious way to do that is to double up the midrange units in series, which Wharfedale did in their splendid room-filling E70. Simple filter conversion of doubling coils and resistors and halving capacitors in the mid circuit for the same SPL with a mere quarter of the individual excursion. Quite how you layout the drivers is moot. I'd favour inline MTM here set off to the side, rather than Wharfedale's sideways offset. Since 3kHz is 5 cms half-wavelength, hardly an issue.
As for bass, you could certainly do closed box (Qts = 0.5) with a suitable driver, but the H1288-08 CA22RNX (Qts 0.41) is not far off anyway.
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Thanks Steve,
It could be cool if some brands like AE could send a bass driver with a high ebough Qt for a sealed enclosure while still having the lowest -F3 as possible (so without Linkwitz transform, but with the help of the room gain).
Unfornatully, hard to find a Pro driver which is made for sealed and a 30 Hz-500 Hz/800 Hz (in the case the ScanSpeak 10F medium is choosed - or the Seas ,SB Acoustic brothers.
... and without band pass sealed bass load 🙄!
All of that remember me each time Troels seems to prefer his OBL (open bafle wide bafle) design to his vented designs !
Totally OT this time, my apologizes to the OP.
It could be cool if some brands like AE could send a bass driver with a high ebough Qt for a sealed enclosure while still having the lowest -F3 as possible (so without Linkwitz transform, but with the help of the room gain).
Unfornatully, hard to find a Pro driver which is made for sealed and a 30 Hz-500 Hz/800 Hz (in the case the ScanSpeak 10F medium is choosed - or the Seas ,SB Acoustic brothers.
... and without band pass sealed bass load 🙄!
All of that remember me each time Troels seems to prefer his OBL (open bafle wide bafle) design to his vented designs !
Totally OT this time, my apologizes to the OP.
Hi Linesource, do you happen to have the plans for that floor standing cabinet in the pic? thanks.
Thank you for sharing the comparison graph, I don't see a significant difference...I appreciate your help.
Despite Troels doesn't like (for the moment?) Active and DSP, I'm asking myself if just a plate amp for the bass with DSP could mimic a sealed load with its good transcient and a smoother sealed -12 dB low end?
There is also a question, but maybe it's a myth : Cabinet which doesn't touch the floor has some space below it : better soundstage and some even say: subjective better bass sounding ????
Troels could also with the 3 Ways classic to have floorstanders with an empty cavity below the main load wich cab be filled with sand, bricks, what ever... which is not bad for the bass ever ! So did he stay with the cabinet shape to keep the advantages of a better soundstage ?
There is also a question, but maybe it's a myth : Cabinet which doesn't touch the floor has some space below it : better soundstage and some even say: subjective better bass sounding ????
Troels could also with the 3 Ways classic to have floorstanders with an empty cavity below the main load wich cab be filled with sand, bricks, what ever... which is not bad for the bass ever ! So did he stay with the cabinet shape to keep the advantages of a better soundstage ?
No worries Eldam, DIYers will always try to explore different ideas even outside of the original plan.
I'm gonna throw in another variable to the equation...I just learned last night that my wife will have a business trip to the Netherlands next month & she's asking me to tag along, I researched online and ScanSpeak drivers are cheaper there for some reason. I'm thinking I can bring an extra empty luggage, buy the drivers there & bring it home.
My question is: in your opinion, is the ScanSpeak 3 way classic Mark II better than the Seas or SB Acoustics versions?
My question is: in your opinion, is the ScanSpeak 3 way classic Mark II better than the Seas or SB Acoustics versions?
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If you want to construct a floor-stander using Troels Classic 3-way crossover you would maintain the width and exact driver location on the top portion of the front baffle, and extend the height such that the tweeter is at ~39" ear level. The cabinet depth can also be changed to achieve your volume goal. Change port dimensions based upon a WinISD simulation.
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The pictured speaker is from post #26 build of the "Astasia" described here on diyAudio.
Astasia Prject - 3 ways loudspeakers:
Woofer: Seas - CA22RNX
Midrange: Seas - MCA15RCY
Tweeter: VIFA Vifa XT25TG30-04
http://www.diyaudio.com/forums/multi-way/140324-astasia-prject-3-ways-loudspeakers.html
===Shopping in Netherlands==still favor Satori Satori 16MWP @1700Hz
Several experts have moved to latest-and-greatest-tech 6" midrange like the Satori 16MWP from SB-Acoustics, adding the SB29RDC -C000-4 tweeter for a 1700-1800Hz crossover plus the SB23NRXS45-8 woofer. There are free designs like the Kalasan you can build. You might also favor the flexable use of separate TM & W boxes like Karios. TM Desk Monitor // TM-W floor stander.
.... I would like to see (an old discussion we read also in Johachim G SB Acoustic Monitor) : this Satori Midrange sealed with a low end sealed as well.... Hey Why not the 18" push-push you talked in a separate enclosure ?
For a 150 Hz to 1800 Hz sealed mid : does a Satori is better than an aluminium Visaton A200 (but it's a 8") ?
Could it be better than a vented mid ????
For a 150 Hz to 1800 Hz sealed mid : does a Satori is better than an aluminium Visaton A200 (but it's a 8") ?
Could it be better than a vented mid ????