Just MJK's worksheet. Time to play. Oh yeah, car quit on me last night, so i was thinking the audio fun time had just ended. Wife got it to start, so as a reward, i showed her a picture of the Emerald Physics CS2.3 an dasked if she would like them for her effirts

Hi Melon Head,
Yeah, the idea is to perhaps rebuild OB's since I've made Mishmash with them trying different things. Then I could perhaps try a set of narrow wings (with piano hinges). Maybe transparent wings made of plexiglass? Just an idea..
On the other hand, since you have already tried various Open Baffle combinations, I would beg you to try one more, if you have the time and willingness (and because I can't 🙁 ).
So, try to build a baffle like Nelson Pass Slot Loaded Open Baffle, albeit smaller (say 60 cm wide 120-130 cm high). Use two AN15's in a slot loaded configuration, and AN10's on top of a baffle. I'be very curious to find out how this sounds...
I also bought a stack of 12s and 10s to try in slot loaded open baffle
run the slot push pull, not push push.
If the back side is too noisy, then flip the drivers on that side.
Norman
If the back side is too noisy, then flip the drivers on that side.
Norman
for the slot loaded open baffles, I went with 12 x10" and 8x12"
😱😀😎
I just wanted to chime in here.
you would need to raise the Qts of the Seas driver
to somewhere like 65 Qts to get really good bass out of it
you could add a 15 or 20 ohm 10 watt resistor inline of the +
of the seas that would bump your bass quiet a bit.
maybe 5 ohm for AN15.
here is a good Qts calculator
mh-audio.nl - Home
you would need to raise the Qts of the Seas driver
to somewhere like 65 Qts to get really good bass out of it
you could add a 15 or 20 ohm 10 watt resistor inline of the +
of the seas that would bump your bass quiet a bit.
maybe 5 ohm for AN15.
here is a good Qts calculator
mh-audio.nl - Home
I stopped following this thread quite a while back, so I know that this comment is coming a little late. But I just thought I would mention that I got the opportunity to test the speakers I built with the Tang band W5-1611 drivers a few weeks ago, and the phase response was absolutely beautiful - effectively ruler flat throughout its usable range. 😎so, so true.
But they have phase issues also (and don't get me started on the whizzer).
Sorry, we can get back to talking about monster fullrangers again!
This thread is more about playing with different types of open baffle designs, not necessarily about any specific full range driver
I just wanted to chime in here.
you would need to raise the Qts of the Seas driver
to somewhere like 65 Qts to get really good bass out of it
you could add a 15 or 20 ohm 10 watt resistor inline of the +
of the seas that would bump your bass quiet a bit.
maybe 5 ohm for AN15.
here is a good Qts calculator
mh-audio.nl - Home
I am not much of a fan of that sought of thing. I would rather add woofers for compensation, or just EQ it flat to 40Hz using a DEQ
The Higher the Q the better it will perform on open baffle.
as far as bass is concerned.
that is a fact.
as far as bass is concerned.
that is a fact.
I am not much of a fan of that sought of thing. I would rather add woofers for compensation, or just EQ it flat to 40Hz using a DEQ
Yes you get improved bass extension but there are other reasons why I don't like doing such things.
bigaudioscotto has a good point.
And more bass (like more cowbell) is almost always helpfull.
But I'd also rather add another driver, that way the main driver is moving less compared to boosting the bass (cutting the highs).
Norman
And more bass (like more cowbell) is almost always helpfull.
But I'd also rather add another driver, that way the main driver is moving less compared to boosting the bass (cutting the highs).
Norman
Seas FA22
Frequency Response of Seas on OB with and without wings
Red trace is without wings
Blue trace is with wings
Frequency Response of Seas on OB with and without wings
Red trace is without wings
Blue trace is with wings
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I did a CSD plot on these Seas drivers and it is very ordinary looking, maybe that is why I don't like them.
I will compare with the Radian compression driver and see what the difference is
I will compare with the Radian compression driver and see what the difference is
Emerald Physics CS2.3
excuse me if i do not believe that, not one bit.Eliminates deep bass limits – Flat response to 20Hz with 2.75 inch thick baffle.
I think they use a digital EQ on those speakers, so in that regard I believe it, but certainly without the DEQ they will be struggling to get flat to 20Hz. Even Nelson uses a 20Hz bass boost with his 6x8" slot loaded open baffle
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