I'm getting back into audio DIY-ing in my early 50s after decades away from it (I was way into it in my late teens and early 20s- but there is SO much more information available now). I am building a set of micro-size speakers for my son's dorm room; details on that other build here (and I will add more as we finalize and see how they work):
requesting help on porting for a small build BUT unless we get really lucky they are probably going to be weak on the low end of the audio spectrum. So I am schooling up on various speaker designs and product/ material options to add into the 'system' (separate from the main speakers) add some bass into the mix. Basically I am thinking some sort of micro-scale sub, if that is not an impossibility.
I fully understand that laws of physics dictate serious bass depends on serious-scale of drivers and enclosures, but he's in a small room and will be moving back and forth between who knows how many small rooms over a span of the coming years, so [and since I like a challenge/ doing something outside the box] I want to aim for something that isn't a whole lot bigger than a 6x6x6 inch cube. I'm giving thought to one of the smaller Tang Band subwoofer/passive radiator "bundles", or one of the Tang Band sub "modules, or, building something. Among the things I have come across that peaks my curiosity, a lot, is the 'Ripole.' And probably drive whatever we get/build for a sub with a Tang Band "KIT0060" 30w sub-cross-amp.
This is NOT aiming, or needing, to generate some huge db level, since the main speakers (Fountek FR59EXE 2" - 85.6 dB 1W/1m) are going to be driven by a TubeCube-7 EL84 single-ended 3w/CH amp.
What I'm wondering is whether a micro-scale 'Ripole' with something like
Dayton DA115-8, or
Dayton ND105-8, or
Tectonic TEBM65C20F-8
might be able to generate some worthwhile bass?
If this seems like something other than a completely infeasible fool's errand, which of the above drivers (or some other non-exotic option if anyone has suggestions) seem like the best candidate?
Thanks in advance!
requesting help on porting for a small build BUT unless we get really lucky they are probably going to be weak on the low end of the audio spectrum. So I am schooling up on various speaker designs and product/ material options to add into the 'system' (separate from the main speakers) add some bass into the mix. Basically I am thinking some sort of micro-scale sub, if that is not an impossibility.
I fully understand that laws of physics dictate serious bass depends on serious-scale of drivers and enclosures, but he's in a small room and will be moving back and forth between who knows how many small rooms over a span of the coming years, so [and since I like a challenge/ doing something outside the box] I want to aim for something that isn't a whole lot bigger than a 6x6x6 inch cube. I'm giving thought to one of the smaller Tang Band subwoofer/passive radiator "bundles", or one of the Tang Band sub "modules, or, building something. Among the things I have come across that peaks my curiosity, a lot, is the 'Ripole.' And probably drive whatever we get/build for a sub with a Tang Band "KIT0060" 30w sub-cross-amp.
This is NOT aiming, or needing, to generate some huge db level, since the main speakers (Fountek FR59EXE 2" - 85.6 dB 1W/1m) are going to be driven by a TubeCube-7 EL84 single-ended 3w/CH amp.
What I'm wondering is whether a micro-scale 'Ripole' with something like
Dayton DA115-8, or
Dayton ND105-8, or
Tectonic TEBM65C20F-8
might be able to generate some worthwhile bass?
If this seems like something other than a completely infeasible fool's errand, which of the above drivers (or some other non-exotic option if anyone has suggestions) seem like the best candidate?
Thanks in advance!
PS, from the standpoint of compactness, I am also curious about a "half ripole" such as what appears at the top upper left of the page here:
Strassacker: Speaker Building, Components - but I have not been able to find out much about them, maybe because I don't know if they have a distinct name as some specific variant of Ripole. . . .
Strassacker: Speaker Building, Components - but I have not been able to find out much about them, maybe because I don't know if they have a distinct name as some specific variant of Ripole. . . .
What about a small driver/long round tube such as a BAWC? It can be laid along a baseboard, stood up in a corner, etc.. If a desk system, a 1/2 square wave variant with the two ends folded at 90 deg adds a bit more HF BW and can be suspended on the rear or designed to lay on the floor folded around a piece of furniture or an elaborate folded box to also be designed as a TH, etc., as a bed or sofa riser.
Lots of options when going multi-way: https://www.diyaudio.com/forums/subwoofers/9501-acoustic-wave-canon-6.html#post1175482
GM
Lots of options when going multi-way: https://www.diyaudio.com/forums/subwoofers/9501-acoustic-wave-canon-6.html#post1175482
GM
No it will not work. A ripole is a specific kind of dipole woofer. Besides frequency, the maximum SPL depends on the displaced air volume and (geometric) spacing between front and back. With a small subwoofer, neither is large.
If you sit in the near field of the subwoofer (listening distance ~ size of enclosure) the dipole cancellation is incomplete and therefore the SPL is much higher. That would require 10" or larger woofers though.
If size is a concern, maximum output for a given size can be achieved with a high excursion woofer in a closed box with lots of power. Passive radiators also work well.
If you sit in the near field of the subwoofer (listening distance ~ size of enclosure) the dipole cancellation is incomplete and therefore the SPL is much higher. That would require 10" or larger woofers though.
If size is a concern, maximum output for a given size can be achieved with a high excursion woofer in a closed box with lots of power. Passive radiators also work well.
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