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Thanks very much, guys. You've given me enough to research for months (and I've got at least a few days 🙂 )
By all means keep it coming. Very interesting stuff - and there must be loads of people wanting to build high class, portable docking stations, miniature speakers and similar.
By all means keep it coming. Very interesting stuff - and there must be loads of people wanting to build high class, portable docking stations, miniature speakers and similar.
Hi,
Simple information like the FR's sensivity is missing, the amount
of BSC to be incorporated, and the sensitivity needed for the
bass unit, which can vary if the FR is attenuated to suit.
What sort of x/o schema is envisaged ?
rgds, sreten.
Simple information like the FR's sensivity is missing, the amount
of BSC to be incorporated, and the sensitivity needed for the
bass unit, which can vary if the FR is attenuated to suit.
What sort of x/o schema is envisaged ?
rgds, sreten.
Unfortunately that is not. (NPI)
If you care to read trough all the thread and not posting random comments. I leave to the OP to give to you the appropriate answer, but he mentioned on post#10 about the size (constraints). Sd of CSS SDX7 is Sd: 128 cm2 and for your driver is Sd: 126.7 cm2 here, spec on your second link is Sd: 131 cm2. OP is looking for ~5" drivers and probably close to that (and smaller) not close to the ~7" driver you mention. Anyway the OP already changed it's requirements once regarding the volume of his speaker, let's see if he's going to change the size of driver first to 6.5 or 7" (you will have to wait...) so that it may accommodate your comments regarding that driver option, and others (drivers). In this case small is beautiful, but I might be wrong... who knows?! I would hate spending time in forums beating a dead horse but is always better that OP's are happy with their choices because they will be the ones living with them (speakers). 😀
No mass required! 😀
-just a lot of linear excursion and power for the second coil (..run actively like a subwoofer with eq.). The nice thing is that you don't really have to care a lot about the T/S parameters at that point (beyond xmax).
Problem is that DVC's woofers smaller than 8" that are any good are pretty much unobtanium. 😱
..Yeah, I saw the later added smaller diameter requirement. 😱 It does meet Steve's original requirements though.. and is a heck of a bargain. 🙂
Actually, I haven't changed my requirements. I originally posted:
"I'm looking for a bass driver for a very small sealed enclosure. I don't yet know the exact size but suspect about 4 litre cabinet volume. I've always preferred sealed to ported enclosures and haven't ruled out the possibility of using two drivers in compound or isobaric configuration to reduce the volume requirement."
As a compound configuration would give an effective cabinet volume of near double that of the single driver's, I thought I would add the request for a larger volume.
Yes, small IS beautiful 🙂
If available over there you might look at
Dayton Audio ND105-4 4" Aluminum Cone Midbass Driver 4 Ohm | 290-212
also available in 8 Ohm, which works very well indeed in a quite small box.
on the other hand if you go bigger then the SEAS Prestige L16RN-SL (H1480) referenced upthread either plays louder or adds another octave on the bottom. Also costs rather a lot more as well, but . . .
Getting significant bass from a small box/small cone requires a long stroke, which both of the above have in abundance, and crossing below 300Hz breakup is not an issue with either of them. The ND-105 will give you a clean 85dB at 60 Hz . . . the L16RN ups that about 6 dB due to its greater surface area (and slightly greater linear stroke).
The Tang Band W5-1138SM looks good on paper, and easily meets your "small box" requirement while matching the L16 in output, but I haven't used it so can't comment beyond that.
Dayton Audio ND105-4 4" Aluminum Cone Midbass Driver 4 Ohm | 290-212
also available in 8 Ohm, which works very well indeed in a quite small box.
on the other hand if you go bigger then the SEAS Prestige L16RN-SL (H1480) referenced upthread either plays louder or adds another octave on the bottom. Also costs rather a lot more as well, but . . .
Getting significant bass from a small box/small cone requires a long stroke, which both of the above have in abundance, and crossing below 300Hz breakup is not an issue with either of them. The ND-105 will give you a clean 85dB at 60 Hz . . . the L16RN ups that about 6 dB due to its greater surface area (and slightly greater linear stroke).
The Tang Band W5-1138SM looks good on paper, and easily meets your "small box" requirement while matching the L16 in output, but I haven't used it so can't comment beyond that.
The Dayton Audio looks interesting and I'll add it to my shortlist. I may be able to buy it from Germany. The W5-1138SM also looks interesting, a little inefficient, although I'm a little wary of TangBand.
Thanks
Thanks
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