Zilch's AK Design Collaborative - Econowave Speaker

[WhiskeyJ]

Sounds like a plan...

Disappointments with EWave designs are few and far between, it should work out great.:thmbsp:

If you edit your profile to include your location, someone close by may be able to let you listen to their EWaves, or provide parts, or, well you never know...

Mike: Thanks alot for for your encouragement. Sorry that I haven't replied sooner. I find it interesting that you (4343) responded to my comment. I've read with special interest your posts about your dual 8in (4ohm) Cerwin Vegas w/8in JBL WG 2.5way Ewave and your reply to someone else about the implementation of 2.5way XO's in general. I have a couple other questions. I'll post again when I'm sure exactly how to phrase the question(s) I'd like an answer to.

Thanks again: Jack

 

[Jcricket]

I am picking up a set of JBL 4530 scoops tomorrow. ANyone ever ewave a set of scoops?
I would search this thread, but I would like to know before I retire. What are we at, some 11k posts? OMG!

Anyway, I have several 15" drivers I could use. One set is from a seeburg jukebox. That combo looks pretty good.


Thoughts?

 

[GordonW]

No reason it shouldn't work in a 4530 scoop. I'd be looking for a woofer with similar specifications to a JBL 2205A or 2225H. Those are the woofers JBL seemed to like to use in those, the most.

Though, do keep in mind- a scoop is a midbass horn. Not a sub. Not much below 50 Hz. You will probably want a sub to go along with it.

Regards,
Gordon.

 

[djnagle]

I just sold my scoops Saturday. About a year ago I put the eWave set up on top of them. It made a great combo. I had the JBL 2225 woof. There is a local guy that did the eWave thing with his scoops with the horn in the scoop mouth. That worked very well for him as he was in a very small room.

The scoops really die out at 50hz though, but they can kick like a mule if needed and have a very large sound.

 

[Jcricket]

I just sold my scoops Saturday. About a year ago I put the eWave set up on top of them. It made a great combo. I had the JBL 2225 woof. There is a local guy that did the eWave thing with his scoops with the horn in the scoop mouth. That worked very well for him as he was in a very small room.

The scoops really die out at 50hz though, but they can kick like a mule if needed and have a very large sound.

I thought the low end suffered on these. So a good sub with an xover of maybe 60-80hz would be a great compliment to these. Hmm...........
Ideas ara a cooking.

BTW - the woofs I am looking at trying are supposed to be able to go to 18hz. Are the low end limitiation due to the box construct? Or is it a combination of box and driver creating the limitations?

Gordon and DJ, thanks for the feedback thus far too.
mark

 

[mayhem13]

I thought the low end suffered on these. So a good sub with an xover of maybe 60-80hz would be a great compliment to these. Hmm...........
Ideas ara a cooking.

BTW - the woofs I am looking at trying are supposed to be able to go to 18hz. Are the low end limitiation due to the box construct? Or is it a combination of box and driver creating the limitations?

Gordon and DJ, thanks for the feedback thus far too.
mark

Post the T/S parameters of the drivers, the volume of the enclosure and the port diameter and length if you don;t mind. I'll be able to sim with a fair amount of accuracy the LF extension and rolloff of your woofers.

 

[Jcricket]

here are the plans for the JBL 4530 scoop. I am not quite sure how to calculatethe box volume or port as this is really more like an open horn.

These are the TS that I have

F(s) 18.84Hz
R 9.767 ohms
L(e) 3.328 mH
Q(ms) 2.575
Q(es) .4251
Q(ts) .3683
Q(ts) .3683
M(ms) 40.24
V(as) 114.3

 

[djnagle]

As I understand it, the limitation is the front and back way hitting eachother and canceling out below 50hz. I stuffed pillows up into the back horn throat and it then became flat from around 30hz on up.

They worked great with subs.

One word of warning: The first chamber behind the driver is VERY shallow so if you have a deep driver you will play hell getting it in there. I have heard of some cutting holes in the first back chamber to fit the motor cover through.

 

[Zilch]

They are horns, not reflexes, and small ones. Extended bass drivers have no advantage, and are generally not well suited for use in these....

 

[Jcricket]

Zilch,
I think you are saying hat these scoopps are really only good for bass bins. Thus, trying to reach the 1.2k xover mark for an ewave doesn't work. Am I correct in my understanding?

 

[Jcricket]

As I understand it, the limitation is the front and back way hitting eachother and canceling out below 50hz. I stuffed pillows up into the back horn throat and it then became flat from around 30hz on up.

They worked great with subs.

One word of warning: The first chamber behind the driver is VERY shallow so if you have a deep driver you will play hell getting it in there. I have heard of some cutting holes in the first back chamber to fit the motor cover through.

I saw your set - gorgeous. Did you ewave yours? Like them?

You got them down to 30hz huh??
I'll go get me a pillow for sure.

 

[djnagle]

Yes I liked them a lot but only after I stuffed them. At that point you are better off just building vented cabs in stead of a complex horn. They look very cool but we are now, as of today, in forclosure so will be heading off to an appartment and don't have the space. PS. not sad about the house, it is just another adventure.

 

[Jcricket]

Yes I liked them a lot but only after I stuffed them. At that point you are better off just building vented cabs in stead of a complex horn. They look very cool but we are now, as of today, in forclosure so will be heading off to an appartment and don't have the space. PS. not sad about the house, it is just another adventure.

awesome attitude you have! best of luck to you.

Are the bass scoops exceptional at anything? What is there best application?
Thanks for the help.
Mark

 

[djnagle]

They were designed as a bass guitar speaker. They do the bass really well.

 

[Jcricket]

SO, they might be better in a three application? xover points like 700 and maybe 5600?

 

[JoMoCo]

Audiokinesis / Duke LeJeune Interview

There is an interesting interview in one of the columns over at the Stereo Times ezine for those interested in waveguide application....:scratch2:

It is Larry Borden's "Below the Radar" column...no direct link allowed...:sigh:

http://www.stereotimes.com/

 

[Zilch]

Zilch,
I think you are saying hat these scoopps are really only good for bass bins. Thus, trying to reach the 1.2k xover mark for an ewave doesn't work. Am I correct in my understanding?

No, not what I'm saying. They are best thought of as midbass bins. The driver is up top and up front, ideal, actually, for mating with waveguide high frequency.

As others have pointed out, however, their ability to play extended bass is limited, and drivers designed to do that in other alignments are not well-suited to use in them. The only way to get that is to augment with subs.

The sum of all of that is to select the woofer based upon doing what THIS alignment does best, i.e., midbass, and the requisite parameters may be ascertained from attention to those drivers known to work well in them.

[2225H, yes. 2235H and a pillow, no.... ]

800331/11816=67.7328​

There is an interesting interview in one of the columns over at the Stereo Times ezine for those interested in waveguide application....:scratch2:

It is Larry Borden's "Below the Radar" column...no direct link allowed...:sigh:

http://www.stereotimes.com/

Duke is a friend of EconoWave and has posted in this thread. Several of his products comprise the first commercial implementation of the designs taught here.... :thmbsp:

 

[Jcricket]

No, not what I'm saying. They are best thought of as midbass bins. The driver is up top and up front, ideal, actually, for mating with waveguide high frequency.

As others have pointed out, however, their ability to play extended bass is limited, and drivers designed to do that in other alignments are not well-suited to use in them. The only way to get that is to augment with subs.

The sum of all of that is to select the woofer based upon doing what THIS alignment does best, i.e., midbass, and the requisite parameters may be ascertained from attention to those drivers known to work well in them.

[2225H, yes. 2235H and a pillow, no.... ]

800331/11816=67.7328​

Got it, now I understand.
Thanks!
Mark

 

[sean.gilder]

Faital pro hf10ak

Anyone use the FAITAL PRO HF10AK? It looks like it could be good. It really flat and looks like it could dig down to 500hz Anyone have any experience with the driver? I was thinking of using in on a QSC152i WG, with a td12_

http://www.faitalpro.com/products/schede/cd.php?id=502010110

 

[mayhem13]

here are the plans for the JBL 4530 scoop. I am not quite sure how to calculatethe box volume or port as this is really more like an open horn.

These are the TS that I have

F(s) 18.84Hz
R 9.767 ohms
L(e) 3.328 mH
Q(ms) 2.575
Q(es) .4251
Q(ts) .3683
Q(ts) .3683
M(ms) 40.24
V(as) 114.3

That's an interesting driver you have there......DEFINATELY a subwoofer and not suitable to reach up to an Ewave .......you'd need a midrange to bridge the gap. Not very efficient either. I'd suggest active cross and amplification to whatever you choose. Here's the Bass sim......this baby digs DEEP!:yes: