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Zilch's AK Design Collaborative - Econowave Speaker

Keg, I'll bring you some of the other foam. I'd like to come take a listen.

Do it, Dave!!
I just dropped by for a quick listen and it's amazing what Keg's done.
Then again, he almost always seems to be able to wring superb performance out of many speakers. :thmbsp:
 
So....you mean I'm going to have to drag the RTA gear out of the the road cases in the garage. Well ... if it must be done.... :D
Oh, NO, another MEASURER?

WOE, all is lost, and we are inexorably doomed. DOOMED, I tell you!
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[Don't you be LISTENING, too, now.... ;) ]
 
Got 1 running and listening right now! Not too shabby, even with virtually no tweaking. :thmbsp: I'm very surprised, especially considering the price of admission! I can tell that I need to play with alignment. There's a little phasing going on when I move around the room, but much less than I expected though. Time to build the 2nd crossover! I'll have to wait on any measurements until tomorrow. I don't think the kids will like sweeps or pink noise while they trying to sleep...
 
Got 1 running and listening right now! Not too shabby, even with virtually no tweaking. :thmbsp: I'm very surprised, especially considering the price of admission!
More surprises are in store once the correct waveguides get there. The PE's are not likely getting down low enough to meet the L100 woofs. You'll be wanting to tweak the lowpass to optimize it for those, as well. Having an RTA will be of considerable value in accomplishing that.... :yes:
 
Well, I don't think I will be using the box grills on my ESS AMT EWGs. I pulled the horn out far enough to have physical alignment and the crossover point clear up noticably. Stronger mid bass responce and clearer vocals. Sounds to good to make the trade off with the grills. So now my plan is to Repaint the painted parts all shiny and new looking and refirb the wood bass, make good looking stand offs for the horn mount and call it good. Pictures to come. Cheers.
 
Reverse the polarity of the HF driver, and see if that doesn't permit you to move it back under the grille and achieve the same sound quality.... :yes:
 
Wire Nut Charge coupled Econowaveguide Crossover

Since the board making tutorial is still a while away, I decided to try thr wire nut approach!:yes::scratch2:

The schematic is a few (!) pages back, thanks again Zilch!:thmbsp::thmbsp:
 

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Anybody else given this a whirl? I should know how it sounds this weekend
and will tell all. Well, all that I know to tell anyway. This is supposed to really improve things quite a bit, and I believe JBL incorporates it in some of their offerings, or did in the past. I am afraid I can not explain the science behind it, I'm sure others can.

Russellc
 
First listen :)

Setup shows huge promise:thmbsp: It's a bit less efficient than I'm used to but that's OK. I designed it so I would need subs so the bass is lacking - not too worried about that.

I can't find my cheapo Kodak camera - which takes the best pics of inanimate objects, so I settled for the Nikon - which I can't make work good:thumbsdn:
 

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Well done!!! those look so cool on the stands.

Hey Z, is that charged crossover for the high or low eff woofs? What does that type crossover do better than the normal E'wave design? Cheers.
 
Oh, MY, those are GORGEOUS on their stands! :thmbsp:

Woofer establishes the system efficiency and bass extension.

Using 2206H, those'll play stupid loud; I've built stage monitors using them.... :yes:

Thanks,

Yeah, the 2206H is killer in a vented cab, and I could easily do that here - but I plan on handing off to subs so I went with an underdamped closed box for a nice, clean, slow rolloff. Better transition....

They eat the power right out of my ~60wch Krell Klone. You gotta understand, I'm coming from a LaScala cab with 511s up top, next to that almost anything is innefficient - but this is gonna sound way better, I can tell already.:thmbsp: And with more juice...well.....
 
Hey Z, is that charged crossover for the high or low eff woofs? What does that type crossover do better than the normal E'wave design? Cheers.
That's the standard efficiency version, Jack's crossover design with charge-coupling.

It eliminates zero-crossing distortion; the caps are run biased 9V above zero. In particular, it takes a bit of "edge" off the highs.

Russell will tell us soon if he can hear the difference. JBL uses this approach in its TOTL consumer models.... :yes:
 
You gotta understand, I'm coming from a LaScala cab with 511s up top, next to that almost anything is innefficient - but this is gonna sound way better, I can tell already.:thmbsp: And with more juice...well.....
Little ol' cheap-ass EconoWave?

[Seems hardly possible.... ;) ]
 
Great fit & finish, as they say.
(And not just compared to mine.)
I love them!

Setup shows huge promise:thmbsp: It's a bit less efficient than I'm used to but that's OK. I designed it so I would need subs so the bass is lacking - not too worried about that.

I can't find my cheapo Kodak camera - which takes the best pics of inanimate objects, so I settled for the Nikon - which I can't make work good:thumbsdn:
 
Yo, KEGGER, REVEILLE!

It's unclear whether you're using D210s or D220s. Did you start with D210s and switch?

If so, do you find the D220s appreciably "smoother?"

No it's allways been 210's.

Would like to do a comparo with 220's if the oppertunity arrises. :)

The foam does quite a bit for higher SPL's, the top holds together better and pretty much
makes the system "sound" the same at low volume as it does at high volume, just louder. :thmbsp:
 
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