Floorstand, 2 way, very low crossover(+with waveguide)
As I've seen on my previous post about Amphion Argon2, I'm wondering if
it is possible to do something pretty close, but as a floorstand!
So my idea is to take a good 8" speaker, put it in a 30-50Liter enclosure
and cross it as low as possible, with an waveguide tweeter!
I want a low F3(as low as possible, but without compromising the TRANSIENT
The are some problems though:
Choosing the right speakers to suit this design
Choosing the correct xover frequency
Harmonics coming through the port
Choosing the port position(front-firing, down-firing, rear-firing)
to achieve a compromise between bass response and harmonics coming
out through the port
Doppler distorsions that appear when there is a high xover point
Woofer's harmonic distorsions when going to upper frequency limit
Woofer's low frequency response
Woofer's off-axis response at high frequencies
Tweeter's low frequency response
Tweeter's harmonic distorsions when going to lower frequency limit
Calculating the horn dimensions
I'll write later the problems that I forgot to mention here!
First, I need some suggestions, for the speakers that would be suited
for the project!
Please write here every link that you think it might be helpful!
For the enclosure, I would go for a mass-loaded (i.e. vented) transmission line. You'll want a driver that has moderate Qts (.4 to .5-ish) and, of course, low Fs. Hi-Vi has a number of 8" drivers (partsexpress.com) that look promising.
To get some idea for how large the enclosure will be (1) do calcs for an alpha-TL from Rich Schultz's article and (2) model the enclosure as a simple bass reflex. Then fiddle with Martin King's worksheets and end up somewhere between (1) and (2).
The enclosure will be vented, because I want some punch!
I am all sealed cabinets and i have Lennox Lewis punch dude ! :dodgy:
I was about to suggest a TL as well! But I don't think "punch" and a very low F3 with an 8" midbass go hand in hand ... at least, not my idea of punch.
Perhaps if you actually aimed for 50 Hz, then crossing to a sub with some punch? Or some vented woofers which move a bit more air?
There is a difference between TL and vented, and I think I'll like vented more!
SO vented shall be!
(BTW TLs are vented.)
BR is more punchy!
However we need to find a pair of woofers and tweeters that
are the best for my goals!
Come on guys!
Any suggestions for the 8" and the tweeter?
Let's say you had 200 Euros(excluding the 40% taxes that I have to pay to get the speakers) what would you buy?
40% import tax!!!
Now that is a joke.
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