Maybe just a smaller PR such as this could work
Dayton Audio ND65-PR 2-1/2" Aluminum Cone Passive Radiator
Or two of them per speaker
Dayton Audio ND65-PR 2-1/2" Aluminum Cone Passive Radiator
Or two of them per speaker
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This article is just what you ordered. I don't use the ultra small+PR concept per se but the steep filtering with an oversized port. The sound is very good, i use an amp that has internal miniDSP (3e audio SY-1002) and basically autoeq'd it with a 20$ dayton audio calibrated mic.
Alright I'm using:
TB W3-1878
.04 cu/ft knockdown enclosures
Two ND65-PR per speaker
Then software EQ or hardware DSP for a high pass filter and hope to get output into the 50's HZ range at low volumes.
Disclaimer: I might not completely know what I'm doing
TB W3-1878
.04 cu/ft knockdown enclosures
Two ND65-PR per speaker
Then software EQ or hardware DSP for a high pass filter and hope to get output into the 50's HZ range at low volumes.
Disclaimer: I might not completely know what I'm doing
HR sims ~60 Hz before running out of Xmax/25 W and ~ -16 dB Vs mid band, so will depend on how much you shelve the mids/HF as to how low it will perform.........
Alright I'm using:
TB W3-1878
.04 cu/ft knockdown enclosures
Two ND65-PR per speaker
Then software EQ or hardware DSP for a high pass filter and hope to get output into the 50's HZ range at low volumes.
Disclaimer: I might not completely know what I'm doing
it doesn't look like this driver will work well at all for digging deep, it's Qts is way too low. Go for a driver with at least 0,6 Qts for being able to actually going below Fs. The one on the article is a good example (fountek FR89EX), and it's problematic 10k resonance can be also solved easily via DSP.
Maybe sub 60hz is too optimistic. I'm just trying to come up with something that's listenable and fits in this particular tiny enclosure. I think I did overlook that fountek though.
It's already ~16 dB down, so tuning it lower will just roll off more of what little [mid] bass output you have and reducing weight will make a steeper roll off with a flatter lower mids output.
In short, the box volume [Vb] dictates the amount of [mid] bass with Fs the corner frequency, hence best overall tuning frequency, which by coincidence it has as is [simmed].
This assumes a T/S max flat alignment though, so for a low Qts driver it would be a higher tuning, which simmed with equal amplitude impedance peaks = ~111 Hz Fb = four PRs to get a very slightly under-damped ~123 Hz/F3, which gets you almost all of the vocals and enough of the ~100-175 Hz 'boom/punch' BW plus more power handling for a bit more EQ fine tuning, so pretty good overall for such a small box except for the extra parts/labor expense.
In short, the box volume [Vb] dictates the amount of [mid] bass with Fs the corner frequency, hence best overall tuning frequency, which by coincidence it has as is [simmed].
This assumes a T/S max flat alignment though, so for a low Qts driver it would be a higher tuning, which simmed with equal amplitude impedance peaks = ~111 Hz Fb = four PRs to get a very slightly under-damped ~123 Hz/F3, which gets you almost all of the vocals and enough of the ~100-175 Hz 'boom/punch' BW plus more power handling for a bit more EQ fine tuning, so pretty good overall for such a small box except for the extra parts/labor expense.
Thanks for the info. Sounds like it will work but if I want more bass other options could be better. I might have to learn how to use hornsrep and see what other drivers could be a good fit. I mostly based my preference of that TB on the low FS and wide frequency response range, and also the hope that it will actually sound good without a tweeter. Also most speakers say to use a much larger enclosure.
Scanspeak Discovery 5F/8422T-01 2" Full Range: Madisound Speaker Components
Too bad this looks like it only goes to 10,000hz
Too bad this looks like it only goes to 10,000hz
Passive Aggressive Mini Speaker Kit Pair
These have the ND91 but also have a tweeter. PR on each side. Could just buy these but I wanted to try a single speaker and only ports or PR on the backside.
These have the ND91 but also have a tweeter. PR on each side. Could just buy these but I wanted to try a single speaker and only ports or PR on the backside.
Yes.
Personally would just EQ the HF, but if you have very keen hearing out to 20 kHz, then yes.
Luck would probably help. Basically all I’m asking is what’s the closest to a full range single driver speaker I can make with this box. It sounds like I’ll either have to compromise the highs or the bass. The ND91 seems promising but I actually do have pretty good high frequency hearing and I am especially sensitive to distortion so I’m not completely sold on it.
If this wasn’t for my desk top at work I’d definitely be looking at other options.