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Zilch's AK Design Collaborative - Econowave Speaker

Jcricket said:
Hey folks, I have been playing around with the the WinISD software and I have a question. When designing the box and the ports to get to a certain frequency, there is a square marked "Vent mach:". This is on the vents tab. SOmetime on my designs it is red and has a Qes/pi in it, other times it is green with a number. Well, I assume green is good.

But, I can mess around with vents and that number changes. It goes up and down. Does a person want to try and get that number as large or as small as it can be??

What does it mean too?

Thanks!
Click to expand...

I can say you do want it in the green but as far as the number I am not sure. It does mean the speed of the air in the port. If the number is to high it will "chuff". not knowing the software I would guess that if there is a amplifier power input as well it should change the # as well.

I would also guess that low or high is not the numbers you are looking for but a in between number.

Maybe Ray, Dave or Zilch will stop by and "straighten us out":D

Edit: Skywaverider has already spoke.
 
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thanks on that clarification of what it is. I would think then a very small number is not good, as you get smaller you eventually step into the red. I think a larger number is probably not good either as I would guess it would make the bass lazy or soft.

So somewhere in between would be my guees too.
Hope zilch or ray or someone a lot smarter than me chimes in.
 
Regarding mach, what Skywave said.

********
I have designed and built several dual-control crossovers for various projects; they are not "Econo."

I use the Model 19 for development work here, and it's the best start I know toward getting the 4555 dialed in, though we'll likely be doing more with this combo as others move to it. It's well over a year since I did anything, but I'll take another look.... :yes:
 
Zilch said:
Regarding mach, what Skywave said.

********
I have designed and built several dual-control crossovers for various projects; they are not "Econo."

I use the Model 19 for development work here, and it's the best start I know toward getting the 4555 dialed in, though we'll likely be doing more with this combo as others move to it. It's well over a year since I did anything, but I'll take another look.... :yes:
Click to expand...

I can attest.. the M19 isn't econo, as is neither the 4555... Seems we need a new thread for HEwaves... (High End)
 
I for one would be interested in seeing a dual control xover for the Selenium 220TI driver and the other more popular type drivers Ewae. This I think would further the design that the room and other factors inhibit......
DC
 
Simi thanks for the reply. I liked the way my first basic ewaves sounded and this seems like a logical step for better performance. The bigger cabs, woofers and better performing CD's should equate to a better speaker, if the crossovers are right. I'll keep an eye on your build and see where it goes.



similost said:
Sounds like you want to build what I am... Same cab, or at least size wise it sounds like it is, and same guide and driver.. I'm using a Lambda woofer though...

I have a feeling Zilch will probably tell you the same crossover I'm using, the modified Altec M19 crossover.. Just not sure if that works with the woofer you want to use. As far as I understand there hasn't really be a crossover designed by anyone yet specifically for the 4555 driver.
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marantzfan said:
I may have missed it, but has anyone tried this woofer in an Ewave project yet? I was kinda hoping to use this with the PE trap box.... :scratch2:
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Run it in a box modeling program to see how it will behave.

Several of us are experimenting with these higher-efficiency woofers, which are particularly well suited for sound reinforcement and home theater applications where a subwoofer is presumptive. Additionally, some of them designed for it can be coaxed to play extended bass with active assist, even in small enclosures.... :thmbsp:
 
I was bored, so I ran it in WinISD.

1.5 feet @ 50hz
Ports = 2 @ 3"d x 4.83"l
Max spl with power limitation is 118db / 212w
-3db = 55hz
-10db = 44hz
Group delay = 11.5ms @ 57hz
Port air velocity @ 50w = 14.5 m/s.
112db @ 50w
 
Clmrt said:
I was bored, so I ran it in WinISD.

1.5 feet @ 50hz
Ports = 2 @ 3"d x 4.83"l
Max spl with power limitation is 118db / 212w
-3db = 55hz
-10db = 44hz
Group delay = 11.5ms @ 57hz
Port air velocity @ 50w = 14.5 m/s.
112db @ 50w
Click to expand...

So, with 25 WPC this woofer will play up to 109DB?
 
At one meter, technically speaking, with pink noise, no XO, salt and pepper...

I punch in the numbers. Z has the microphones.
=-)
 
marantzfan said:
So, with 25 WPC this woofer will play up to 109DB?
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If you are refering to 25 F-5 watts, remember, its a Class A amp and if I recall properly, can belt out up to 50 watts mid band for short periods. Might inquire with the F-5 experts on DIY.

russellc
 
marantzfan
The F5 DIY, if built correctly and feed enough quality signal, will not be the weak link in the system. It is more about finesse than ear bleeding volume. That being said, the F5 like the ewave is an amazing performer in the hifi fun per dollar category.:sing:

I have one and have been amazed at its ability to drive any thing from 88dB 1w1m reasonable impedance speakers on up with more than enough volume in my system. Do some of your own (re)search...:scratch2:

Build a pair of ewaves and report back...:zoom:
 
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marantzfan said:
I may have missed it, but has anyone tried this woofer in an Ewave project yet? I was kinda hoping to use this with the PE trap box.... :scratch2:

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=264-391
Click to expand...

Just for grins, here's an alternative:
http://www.loudspeakersplus.com/images/WN-12S.pdf.

It's a smidge more efficient, and a little less money, but what I like is the very low Le which should make crossing it over a breeze. The FR looks smooth, but I've not tried one so I can't say how true to life that is.
 
fastbike said:
On the other side of the question, what is it about this woofer that is attractive to you? Is it the 95dB/1 watt? I'd be looking at others for the trap cab.
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Looks like a well build driver, great reviews and looked like it would play well in a small (er) cabinet.

What are the best known performers for the trap cab?
 
marantzfan said:
What are the best known performers for the trap cab?
Click to expand...
I've tried a bunch, but only recently loaded the standard Econo Waveguide, so I'll have to go back through them now that I've sorted out the forward axis thing.

In the meantime, I've added several more to try -- D123, 128H-1, KappaLite 3012LF, Peerless 830669, others.

I'm about to get back on the QSC waveguide, as well.... :yes:
 
Zilch said:
I've tried a bunch, but only recently loaded the standard Econo Waveguide, so I'll have to go back through them now that I've sorted out the forward axis thing.

In the meantime, I've added several more to try -- D123, 128H-1, KappaLite 3012LF, Peerless 830669, others.

I'm about to get back on the QSC waveguide, as well.... :yes:
Click to expand...

Thanks Zilch. I've figured out that the D123 is a Dayton and that te Kappalite is an Eminence....Who makes the 128H-1 and where can you purchase it and the Peerless 830669?:scratch2:
 
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