This is the only link I can find.
https://media.music-group.com/media...1600D8 P0851_Product Information Document.pdf
https://media.music-group.com/media...1600D8 P0851_Product Information Document.pdf
So after I increased the width 1.59 times I got the following response with bc18sw115
Original is black
]kAttachments
hi, that looks almost too nice, is it realistic?
little more average efficiency and good low extension gain.
how would this compare to the th18 mk1 regarding driver stress and max spl?
Two of this cabs takes little more space than 3 regular th18, so i'm looking at deeper bass but 3db lower spl for same stack size am i right? or should this larger version go louder?
i'm toying the idea of building some horn extension for my th18 in the fashion of art welter, the infrahorn and similiar ...
little more average efficiency and good low extension gain.
how would this compare to the th18 mk1 regarding driver stress and max spl?
Two of this cabs takes little more space than 3 regular th18, so i'm looking at deeper bass but 3db lower spl for same stack size am i right? or should this larger version go louder?
i'm toying the idea of building some horn extension for my th18 in the fashion of art welter, the infrahorn and similiar ...
I imagine in the real world that the wider version would flatten out the trough at 100Hz as well. I don't think the sim accounts for how much wider the mouth is than the driver.
With the wider box I think some of the throat could be tapered as well, to stop it getting too "Honky". Have you seen the "Jensen Imperial"? Huge horn but heaps of gain.
Remember a wider box is going to need a lot more bracing. If it doesn't work then it shouldn't be too difficult to cut it back down to size.
Hi all! Huge thanks and big up for this thread, it's really interesting! I am currently wondering if the RCF LF18G401 could work in this cab. Has anyone tried it yet? Sim or real life? 
Living in Germany, this is a budget option for me (thomann). If it has any major disadvantages I would go for PDs or 18sound.
Furthermore, I am still unsure which plans to use for building the boxes, as I read that there were a few improvements concerning cone correction, path length etc. (Djims cone correction...)
Is there sort of a final/best version atm?
Respect to 1 and all,
Fabio
Living in Germany, this is a budget option for me (thomann). If it has any major disadvantages I would go for PDs or 18sound. Furthermore, I am still unsure which plans to use for building the boxes, as I read that there were a few improvements concerning cone correction, path length etc. (Djims cone correction...)
Is there sort of a final/best version atm?
Respect to 1 and all,
Fabio
Hi all,
Oberton 18XB800
18XB800.....................18XB700
Price = 240€................. Price = 230€
AES = 1100 W...............AES = 1000 W
Fs = 35,83Hz.................Fs= 36,1 Hz
Qms = 8,76...................Qms = 9,26
Qes = 0,353..................Qes = 0,314
Qts = 0,339...................Qts = 0,304
Mms = 208,66 gr.............Mms =182,62 gr.
Re = 5,02 Ohms..............Re= 5,17 Ohms
Sd = 1110 cm^2 .......... Sd = 1110 cm^2
BL = 27,85 Tm...............BL = 26,1 Tm
Le = 1,87 mH.................Le = 1,83 mH
Xmax = 8,0 mm..............Xmax = 5,5 mm
Xvar = 11,5 mm..............Xvar = 9,0 mm
Cheers,
Djim
Oberton 18XB800
18XB800.....................18XB700
Price = 240€................. Price = 230€
AES = 1100 W...............AES = 1000 W
Fs = 35,83Hz.................Fs= 36,1 Hz
Qms = 8,76...................Qms = 9,26
Qes = 0,353..................Qes = 0,314
Qts = 0,339...................Qts = 0,304
Mms = 208,66 gr.............Mms =182,62 gr.
Re = 5,02 Ohms..............Re= 5,17 Ohms
Sd = 1110 cm^2 .......... Sd = 1110 cm^2
BL = 27,85 Tm...............BL = 26,1 Tm
Le = 1,87 mH.................Le = 1,83 mH
Xmax = 8,0 mm..............Xmax = 5,5 mm
Xvar = 11,5 mm..............Xvar = 9,0 mm
Cheers,
Djim
Yes, the 18XB800 has more xmax. I didn`t say the XB700 is the xmax-champion
I actually used, tried, listened to these speakers and have them all here - and the XB700 SOUNDS very good in this horn. (for example - the 18Sound 18LW9600 has a lot more xmax on paper, looks not much differnt in the simulation, but sound awfully flappy and mushy compared to the XB700 in the same cab).
Of course, sound always is about taste - if one is after max. SPL, he might like other speakers
Besides, the 18XB800 is taken out of the Oberton-Portfolio (because no one wanted it, the XB700 sounded much better in ported boxes, too... At least to the many ears of the people I know who tried it out..).
Going for xmax, the XB800 is the better Choice for the money, compared to the XB700.
I actually used, tried, listened to these speakers and have them all here - and the XB700 SOUNDS very good in this horn. (for example - the 18Sound 18LW9600 has a lot more xmax on paper, looks not much differnt in the simulation, but sound awfully flappy and mushy compared to the XB700 in the same cab).
Of course, sound always is about taste - if one is after max. SPL, he might like other speakers
Besides, the 18XB800 is taken out of the Oberton-Portfolio (because no one wanted it, the XB700 sounded much better in ported boxes, too... At least to the many ears of the people I know who tried it out..).
Going for xmax, the XB800 is the better Choice for the money, compared to the XB700.
We tested both XB700 and XB800 which resulted in both drivers being smoked. Both where run at war volume at their relative xmax for 6+ hours. The XB1500 has a much stronger motor that can withstand long endurance in the TH.
The 15-B500 and the 15XB700 are good designs for tham15 or SS15. The XB800 is not very suitable for the TH design. Maybe more for FLH.
If you want a cheap build bass, try a 15B500 in a tham15 or SS15. It is really punchy from about 45hz to 120hz
The 15-B500 and the 15XB700 are good designs for tham15 or SS15. The XB800 is not very suitable for the TH design. Maybe more for FLH.
If you want a cheap build bass, try a 15B500 in a tham15 or SS15. It is really punchy from about 45hz to 120hz
That´s odd. The XB700 is used in a lot of cabs of different types, we never experienced this driver to "blow away fast". After around 200 drivers of this type, I think I have a fair impression of what it can handle, it´s very robust (given it´s cost and ratings, of course there are speakers which handle a lot more). What settings on the DSP did you use, what amping and what kind of Music was played? How did you determine the xmax, how did you set limiters?