Well, @Abhishmuk : I'm sure to understand your question, to be honest... The two dispositions we tested were the reality of definitive disposition, and the 2nd one (Ripole close to the room center) seemed better than the 1st one (Ripole close to in-between horns) in terms of bass level at the listening place.
Thanks @ripblade ! My Audio friend designed them and have them made by a cabinetmaker (at left, the prototype, at right the definitive model). This project is intended for a small production.
Yes, that's true : the bass seemed to come from the horns themselves, in the room center placement of the Omega Ripole (N°2), finally with the phase on the subwoofer module switched to 180°, with 24dB/Oct. slope at circa 40Hz.
That said, when we tested with his Magnepan MG2.5 - in the same room - the marriage between the Ripole and the Planars was evident and immediate, just placed in between the speakers like with the horns (N°1). Dipole planar or e-static speakers - that are said to be difficult to pair with BR, sealed or ASW subs - were enchantered by the Omega Ripole : we could not tell from where the infra-bass came, the blend was total...
So conversely, maybe the horns would have benefited better to be paired with a conventional sub, instead of a pseudo-dipole sub like the Ripole ? Since we had not one on hand, we can't tell...
T
From a musical point of view horns are bugles. A continuous expanding pipe is a bugle. A constant pipe with a horn on the end is a trumpet or trombone. Tubas and French horns are bugles.
@tubelectron
I have seen drawings for your very nice Omega Mini and Micro.
But I can't find any for the 12" in any forum.
Would you be kind enough to share a link, or maybe post a sketch here ?
Many thanks in advance,
Patrick
PS, I am actually planning to test mini or micro.
A bit undecided, but think that more piston area cannot be a disadvantage.
Any hints ?
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You welcome @EUVL - Here you are :
https://guilhemamplification.jimdofree.com/hi-fi-other-projects/
https://diyaudioprojects.com/Forum/viewtopic.php?f=11&t=7327
The major problem with my Mini 7" and Micro 5" Ripoles design is... To find a suitable/quality/practical/compact sub amp module to integrate in the cab ! When I made my tests, I finally found none... That's why today only subsists the Omega Ripole 12", as above.
T
https://guilhemamplification.jimdofree.com/hi-fi-other-projects/
https://diyaudioprojects.com/Forum/viewtopic.php?f=11&t=7327
The major problem with my Mini 7" and Micro 5" Ripoles design is... To find a suitable/quality/practical/compact sub amp module to integrate in the cab ! When I made my tests, I finally found none... That's why today only subsists the Omega Ripole 12", as above.
T
What is important in the cabinet sizing ?
The front / rear chamfer exit area, or the total volume, or throat-area/depth ?
You also mentioned somewhere that there's no real advantage in having non-parallel walls.
So if the filter/amplifier is external, the width of the cabinet above can be as small as 316mm (with the woofer motor sticking out) ?
Many thanks in advance,
Patrick
The front / rear chamfer exit area, or the total volume, or throat-area/depth ?
You also mentioned somewhere that there's no real advantage in having non-parallel walls.
So if the filter/amplifier is external, the width of the cabinet above can be as small as 316mm (with the woofer motor sticking out) ?
Many thanks in advance,
Patrick
Why not just use separate amp boards and SMPS which are plentiful in compact sizes too?
I answered your PM request @EUVL : check it out ! 🙂 😉
About the non-parallel walls : well, that's probably a plus against resonances... But the real reason for me was to gain the space in order to house the sub amp in the cabinet, for an all-integrated, standalone unit.
T
t.racks DSP 4x4 Mini Amp would do great for both subwoofer and sattelite speakers.
https://www.thomann.dk/the_t.racks_dsp_4x4_mini_amp.htm
For just the subwoofer, you could use wondom Bru5
Or some TPA31xx modules with simple DSP
https://www.aliexpress.com/item/1005006891658934.html?spm=a2g0o.productlist.main.21.1499SubzSubzgx&algo_pvid=89cc98a9-30b3-48ab-b648-acc1d4fbd4d9&algo_exp_id=89cc98a9-30b3-48ab-b648-acc1d4fbd4d9-20&pdp_ext_f={"order":"467","eval":"1"}&pdp_npi=4@dis!USD!19.18!16.13!!!19.18!16.13!@211b819117474047875404962e76bb!12000038652826318!sea!DK!0!ABX&curPageLogUid=mJIob8ZheaOF&utparam-url=scene:search|query_from:
I think there is plenty options - not mono plateamps I agree - but close enough (definitely small)