E-Wave Mini?

[Big Stogie]

Since I am building a pair of e waves for my home theater / music. I was thinking it might be interesting to have some small ones for surround and a center maybe even a WTW for the center? I saw a 6X6 wave guide. Maybe some 5" or 6" woofers... Anyone done this? Links?
Mike

[Pete Schumacher ®]

Since I am building a pair of e waves for my home theater / music. I was thinking it might be interesting to have some small ones for surround and a center maybe even a WTW for the center? I saw a 6X6 wave guide. Maybe some 5" or 6" woofers... Anyone done this? Links?
Mike

DoubleTap is doing something along those lines with a dual Usher 8948A with waveguide-loaded RS28F.

http://techtalk.parts-express.com/sh...d.php?t=219795

[evilskillit]

Whether these designs are "E-wave like" or not I couldn't say, but they do have some degree of CD and they are waveguide designs. Off the top of my head.

http://www.htguide.com/forum/showthr...t=36222]Modula
and
http://www.zaphaudio.com/Waveguidetmm.html
There is also this guy, but one of these probably costs way more than a set of E-waves.
http://www.htguide.com/forum/showthread.php4?t=35812

[Pete Schumacher ®]

Whether these designs are "E-wave like" or not I couldn't say, but they do have some degree of CD and they are waveguide designs. Off the top of my head.

http://www.htguide.com/forum/showthr...t=36222]Modula
and
http://www.zaphaudio.com/Waveguidetmm.html
There is also this guy, but one of these probably costs way more than a set of E-waves.
http://www.htguide.com/forum/showthread.php4?t=35812

With that WG, looks like 3KHz is about the lower limit for use in a CD approach.

[Zilch]

The 6" square is one of my favorite waveguides, but I may have had a false start with it in Spitwad (see "Flex Your PCD Mettle" thread) because I did not understand the directivity issues, which were subsequently resolved using the 8" square variant on a flush baffle. I plan to revisit in something smaller:



Those are PE 0.38 and 0.25 cuft cab baffles. Here's the commercial version of the one on the right:




Here's the 8" in an AR4x cab:




I did this with the 6" as a visual joke, but it sounded mighty nice, actually:




Nobody's worked through MTM yet, but the prospects are clear:



There are others, also. This would make a mini-version of the Raptors, linked above:

http://www.eighteensound.com/index.a...roduct&pid=262

Yes, I have them. Yes, I like them....

[Zilch]

JBL resorts to 3-way as described in Toole Fig. 18.18 to make MTM work horizontally:

[Mayhem13]

Hey Zilch, are those your W-6 woofers?

[Zilch]

I forget what they are, other than an impulse sale purchase here maybe 4-6 months ago....

[evilskillit]

Unless its a compression artifact they look like they've got a woven looking pattern on the surrounds. Theres a TB driver that looks like that, tho I forget which one it is.

[Mayhem13]

Real world 92db, that's what they are. Unheard of in a 6.5" woofer with bass extension this low. I'm planning an MMTMM with em with an avg sens of 97 db with BSC. How do they sound if you've listened yet? I'd love to see some measurments if you've done em?

[Mayhem13]

Unless its a compression artifact they look like they've got a woven looking pattern on the surrounds. Theres a TB driver that looks like that, tho I forget which one it is.

TB W-6 789e

[Mayhem13]

If anyones' interested in a Ewave mini, another forum member linked me to the QSC parts store where the XD120 waveguide AND driver are available for $29.95 each. That's less than the average retail of the horn alone. I just ordered two and don;t know the quantity available but good news travels fast so.......

http://yhst-93643794936312.stores.ya...p00004700.html

[Zero the Hero]

how big is that horn?

[Big Stogie]

http://www.eighteensound.com/index.a...project&pid=22
discontinued 3K crossover recommended 108DB

[nathan]

how big is that horn?

Looks like some more info is here, but it's for the XD125. Should be pretty close though.

http://www.eighteensound.com/index.a...roduct&pid=262

- Nate

[Zilch]

If anyones' interested in a Ewave mini, another forum member linked me to the QSC parts store where the XD120 waveguide AND driver are available for $29.95 each. That's less than the average retail of the horn alone. I just ordered two and don;t know the quantity available but good news travels fast so.......

http://yhst-93643794936312.stores.ya...p00004700.html

EXCELLENT find, Mayhem!

They're slam dunk in many of the smaller vintage cabs for entry-level mini-eWaves, OR something more refined, like:

http://www.eighteensound.com/staticC...Sound_kit8.pdf

[Call 'em "No Excuse," maybe.... ]

[Zilch]

YO, Zilch-hating restorationist rating-crapper, speak thy peace!

[Skywave-Rider]

I am a thread-rating-restorationist...weighed in.

I like the xd125. I used the driver with the JBL 6x6 and that combination is good too.

[Mayhem13]

EXCELLENT find, Mayhem!

They're slam dunk in many of the smaller vintage cabs for entry-level mini-eWaves, OR something more refined, like:

http://www.eighteensound.com/staticC...Sound_kit8.pdf

[Call 'em "No Excuse," maybe.... ]

At $30 each, there's really "No excuse" not to try an Ewave variant IMO. But i'm goin somewhere else with these........First rule of Project Mayhem......you do not talk about.....oooops.

Space Monkeys!

[Erich H]

Could that waveguide be modified to just accept a dome tweeter and still get decent performance?

I was working on an integrated baffle. I've made a copy of the "elliptical oblate spheroid waveguide" used in JBL LSR series. But now I'm wondering about the one Mayhem posted.

I made this copy in the photo below, but I will be modifying it for a smaller woofer or two. Right now it's set up for an 8" driver.