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Zilch's AK Design Collaborative - Econowave Speaker

I'm on exactly the same learning curve, just a little behind you. I'm going to match it to the JBL 2235H, but first I need to install excel 2003 and look at it, I've never messed with spread sheets before...

Russellc

You won't be able to tell that they're spread sheets.

There's lots of VB code with buttons and spinners. The GUI is pretty neat.

Here's a screen shot.

RS100-4_ND20-6_14L60Hz.jpg
 
Looks very nice! I have never messed with a spread sheet, its just new territory, and I'm sure I'll have a load of questions, hopefully the same ones as the others starting out so we can all learn together!

I assume excel is on a disc, and it is loaded into the computer like most software, or instructions will guide me. Then download PCD and hopefully things will start making sense. That's likely when a large load of questions will be coming from me!:scratch2:

Russellc
 
If people are willing it would be nice to have everyone post about PCD and others in this thread.
http://www.audiokarma.org/forums/showthread.php?t=260393

It will be a little more condensed and easy to find answers in the future.
That way it is not buried in the ewave thread.:yes:

Aware of that thread, but what we're discussing here isnt so much software specific as it is "Getting the E'wave Top to match up with various woofers", ( the entire spirit of the E'wave module) which is germaine to the econowave discussion. Sorry, you'll have to muddle through!:yes: Getting this thread under control is a lost cause after 10,000+ posts! Many, many people come to this thread about using various woofers with e'wave, this will chronical that...When it ceases to be on point with E'wave, I'll start a new thread showing how I did it, assuming I indeed "do it".......shoot, this thread has been about measuring from the beginning, with Skywave, Zilch and Jack at the controls of Behringer DEQ 2496....

Russellc
 
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eWave Deluxe XO on V1.1 PC boards:

attachment.php


10 Ohm and 9.1 Ohm paralleled resistors shown stacked in the R2 position for 20W power dissipation. Any higher than that, they should be mounted off-board on an external heat sink, jumper J3 providing the requisite connections (not installed here). There's little point in beefing up the power handling if the heat can't get out of the box. Worse yet, the XO board is possibly covered with fiberglass or other insulation.

Michael Percy sells 50W aluminum-clad non-inductive power resistors, but a 12" square aluminum heatsink is required for that level of power handling capacity; derate to 20W without one. No 4.7 Ohms, but 4.5 and 5 are available, or parallel 9 and 10. $5.95 each, last time I looked, and a minimum $25 order, I believe I'd want some substantiation that such measures are warranted before implementing these extremes.

a) L1 connects between L1B and R1 hole common with LP1.

b) R1 (4.7 Ohms) mounts in the R2 position, but is skewed and connected to hole L1A.

c) R2 (2.7 Ohms) mounts in the R1 position, also skewed, and connects to the R2 hole common with LP3.

d) J3 not installed.

e) C3 jumpered.

f) All driver and L-pad connections standard, as marked.
 

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  • eWave Deluxe PCB XO.jpg
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I'll be right there with you guys. I got the QSC horns a week ago, and have the DE250s. What I'm short on right now is woofers. I have a set from a pair of Marantz Imperial 7 that look like they may be up to the task. I have a pair of JBL 123a in another set of speakers, but I hate to rip them up at this point. If I find another pair locally, I may pick them up. I have 3.5 cu boxes to put them in, now I just need to cut the baffles........:yes:

Markus

Oooh!, I have a set of these. And been wondering for awhile , wether to refoam or not. They do look very tempting.:scratch2:
 
eWave Deluxe XO on V1.1 PC boards:

attachment.php


10 Ohm and 9.1 Ohm paralleled resistors shown stacked in the R2 position for 20W power dissipation. Any higher than that, they should be mounted off-board on an external heat sink, jumper J3 providing the requisite connections (not installed here). There's little point in beefing up the power handling if the heat can't get out of the box. Worse yet, the XO board is possibly covered with fiberglass or other insulation.

Michael Percy sells 50W aluminum-clad non-inductive power resistors, but a 12" square aluminum heatsink is required for that level of power handling capacity; derate to 20W without one. No 4.7 Ohms, but 4.5 and 5 are available, or parallel 9 and 10. $5.95 each, last time I looked, and a minimum $25 order, I believe I'd want some substantiation that such measures are warranted before implementing these extremes.

a) L1 connects between L1B and R1 hole common with LP1.

b) R1 (4.7 Ohms) mounts in the R2 position, but is skewed and connected to hole L1A.

c) R2 (2.7 Ohms) mounts in the R1 position, also skewed, and connects to the R2 hole common with LP3.

d) J3 not installed.

e) C3 jumpered.

f) All driver and L-pad connections standard, as marked.

Thanks for posting this, I'll put one together this weekend and report back.

russellc
 
About the new 5-component x-over. I must have missed the reasoning behind the addition of the parallel inductor (Schumacher 1.1). :scratch2:




The DE 250 and The QSC are a killer good combo! As has been shown by Zilch, Jack and Pete, it does take a little fiddling with, otherwise it can be like a spike in the head, especially for the first hours of use. Once properly set up, it is breath taking. As Zilch has found, Wayne also has it sussed out in the 4 Pi, and of course Earl with his Summa speakers. This driver is fantastic for the money. Like the 220 ti is fantastic for its price, the DE 250 is a great upgrade, and a fantastic price for said upgrade.

Russellc


Hey Russellc, when you say "fiddling with" are you just referring to positioning in relation to woofer and L-pad level? I know break in is going to take a while.

I can get spike in the head listening arbitrary stuff I throw together in the basement at anything reaching above low/moderate levels and very select recordings. I'm hoping for a little more than that here ;)

What do you believe the main source of the difficulty was in getting things dialed in?

RC
 
About the new 5-component x-over. I must have missed the reasoning behind the addition of the parallel inductor (Schumacher 1.1). :scratch2:
The original highpass of this 5-component crossover was first order. Several members suggested that topology might not provide sufficient protection against over-excursion of the compression driver at high SPL, so we updated it to second order.... :yes:
590337/10112=58.3798​
 
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The original highpass of this 5-component crossover was first order. Several members suggested that topology might not provide sufficient protection against over-excursion of the compression driver at high SPL, so we updated it to second order.... :yes:
590337/10112=58.3798​


Thanks, I noticed the change to 2nd order on the HF but was just wondering why. I guess I don't run that hot over here so it's not of much concern. Not a bad notion though. Just in case ;)



RC
 
Thanks, I noticed the change to 2nd order on the HF but was just wondering why. I guess I don't run that hot over here so it's not of much concern. Not a bad notion though. Just in case ;)
They are being suggested for an application as frat house dance party speakers in another forum.

[I remember that.... :tongue: ]
 
I ain't sayin' when, but here's a clue:

"Ray Charles -- the high priest hiz SELF!"

Pop quiz: What's the song and album? ;)
 
Still can't believe how good the ewave system sounds. My current lashup consists of Large Advent woofers in DQ-10 cabs, low sensitivity ewave crossover, D220Tis and 6" JBL waveguides. This sounds marvelous every time I turn it on. A slight lack of bass balance was rectified by moving them closer to the rear wall.
I was planning a different pair of speakers for my mains: Kef 103.3s in professionaly custom Rosewood veneered cabinets with upgraded crossovers and digital EQ. All of the parts for that are still sitting in the boxes.
Love these ewaves!
 
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